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Tornadoes of 2017

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Tornadoes of 2017
A chart of the 2017 United States inflation-adjusted tornado count
TimespanJanuary 2 – Currently active
Maximum rated tornadoEF4 tornado
Tornadoes in U.S.1,352
Damage (U.S.)> US$5 billion
Fatalities (U.S.)38
Fatalities (worldwide)40

This page documents notable tornadoes and tornado outbreaks worldwide in 2017. Strong and destructive tornadoes form most frequently in the United States, Bangladesh, and Eastern India, but they can occur almost anywhere under the right conditions. Tornadoes also develop occasionally in southern Canada during the Northern Hemisphere's summer and somewhat regularly at other times of the year across Europe, Asia, and Australia. Tornadic events are often accompanied with other forms of severe weather, including strong thunderstorms, strong winds, and hail.

There have been 1,505 reports of tornadoes in the United States in 2017 so far,[1] of which at least 1,352 have been confirmed. A total of 40 tornado-related deaths have occurred worldwide as of June 6: 38 in the United States,[2] one in Brazil, and one in Germany. The tornado season in 2017 started exceptionally early, having the second most active January since records began in 1950, and one of the most active first quarters in recorded history. 2017 has also had four high risks issued by the Storm Prediction Center so far this year, making this the most active in the sense of high risks since 2011, which had a total of five high risks issued throughout the entire year.

Events

Template:Tornadoes of 2017/Deadly

United States yearly total

Confirmed tornadoes by Enhanced Fujita rating
EFU EF0 EF1 EF2 EF3 EF4 EF5 Total
72 584 558 123 13 2 0 1,352
  • Note: Final totals through August 31, preliminary through August 13


January

Extreme levels of tornadic activity took place in January. There were 142 preliminary reports of tornadoes in the United States in January,[3] of which 135 were confirmed. This is nearly 4 times the monthly average of 35, and the most active January since 1999.[4][5]

January 2

EFU EF0 EF1 EF2 EF3 EF4 EF5
0 5 26 5 0 0 0

On December 26, 2016, the Storm Prediction Center noted the potential for a severe risk to evolve across the Southern United States in the extended range.[6] On December 31, a slight risk of severe weather was noted from southeastern Texas through far western Alabama.[7] The risk area was shifted eastward and heightened to an enhanced risk the following day, with the SPC warning of the potential for damaging wind gusts and a strong tornado or two.[8] A mesoscale convective system developed across eastern Texas early on January 2, aided by the combination of a strong upper-level trough, a moderately unstable atmosphere, and sufficient moisture.[9] As the convection progressed east, hundreds of damaging wind reports and numerous tornado reports were received. The Louisiana towns of Bunkie and Hessmer sustained moderate damage from EF1 tornadoes. An EF2 tornado destroyed chicken houses and caused tree damage near Mount Olive, Mississippi, while another EF2 struck Rehobeth, Alabama, causing considerable damage at a local festival grounds. Rear flank downdraft winds away from the Rehobeth tornado killed four people when a large tree crushed a mobile home. Three separate EF2 tornadoes occurred near Blakely and Arlington, Georgia, causing major tree damage, destroying farm structures, and causing severe roof damage to a few homes. Overall, this outbreak produced 36 tornadoes.[10][11]

Damage from the storm system exceeded US$250 million.[12]

January 15–16

EFU EF0 EF1 EF2 EF3 EF4 EF5
0 6 3 2 0 0 0

The SPC first highlighted a severe weather threat area along and south of the Red River in Texas on January 12, valid three days later.[13] A Slight risk was introduced farther southwest over West Texas on January 13, with subsequent shifts northeast.[14][15] With a negatively-tilted upper-level low across the Southwest United States, abundant moisture and strong upper-level winds overspread the risk area, and the SPC warned of semi-discrete/line-embedded supercells capable of large hail, damaging winds, and isolated tornadoes.[16] A total of 11 tornadoes touched down on January 15 through the next morning, including two EF2s that impacted areas near Gatesville, Texas and Brady, Texas. An EF0 tornado caused minor damage in Grand Prairie, Texas, while an EF1 damaged multiple homes in Clifton.[17]

January 21–23

EFU EF0 EF1 EF2 EF3 EF4 EF5
0 23 44 11 3 0 0
EF3 damage to a house in Hattiesburg, Mississippi.

In the pre-dawn hours of January 21, a complex of strong thunderstorms affected the Gulf Coast states, where the SPC had issued an Enhanced risk of severe weather. The possibility of discrete cells forming ahead of this complex was mentioned,[18] and one such cell led to the formation of a large and destructive EF3 tornado from 09:35 UTC to 10:13 UTC across Lamar, Forrest, and Perry counties in Mississippi. Traveling along a 31.3-mile (50.4 km) path, the EF3 heavily affected sections of Hattiesburg, where 4 deaths occurred.[19][20] Later that day, a Moderate risk was issued across portions of southern Arkansas, northeastern Louisiana, and western Mississippi. Although the risk area was issued explicitly for the threat of large hail,[21] several tornadoes were assessed to have touched down, including two EF2 tornadoes that impacted areas east of Plain Dealing and Natchez, Louisiana. During the early morning hours of January 22, a devastating EF3 tornado impacted portions of Brooks, Cook, and Berrien counties—most notably in areas around Adel—killing 11 people.[22]

Later that day, a severe weather and tornado outbreak was expected to occur across northern Florida and southern Georgia, prompting the SPC to issue their first High risk since June 3, 2014, and the first in the winter months since the 2008 Super Tuesday tornado outbreak.[23][24] An extremely large EF3 wedge tornado affected the southern and eastern reaches of Albany, killing 4 people and injuring more than 50 others.[25][26] Another person in Albany succumbed to her injuries and died on January 26.[27] This outbreak killed 20 people and injured many more, making it the second deadliest January tornado outbreak since 1950, behind the 1969 Hazlehurst, Mississippi tornado outbreak.[28]

February

Similar to the previous month, above average activity occurred in February. There were 115 preliminary reports of tornadoes in the United States in February,[3] of which 70 were confirmed. This is over twice the national average of 29 tornadoes.[29][30]

February 7

EFU EF0 EF1 EF2 EF3 EF4 EF5
0 5 6 2 2 0 0
EF3 tornado in the Michoud area of New Orleans East

A localized outbreak of 15 tornadoes impacted Southern United States on February 7. A few of these tornadoes were strong, with the most significant damage occurring in Louisiana. A large EF2 wedge tornado destroyed homes near Killian, Louisiana.[31][32][33] An EF1 tornado caused considerable damage in the town of Donaldsonville, killing one person.[34] A large, damaging tornado of EF3 intensity ripped through portions of Eastern New Orleans, damaging or destroying numerous homes, businesses, and industrial buildings. Another EF3 tornado near Watson toppled metal truss towers and destroyed manufactured homes. At least 33 people were injured by the New Orleans tornado with up to 6 being serious. An EF2 tornado also damaged multiple homes and destroyed a flea market near Harperville, Mississippi.[35]

February 19–20

EFU EF0 EF1 EF2 EF3 EF4 EF5
0 4 2 3 0 0 0

Scattered tornadoes impacted the state of Texas on February 19 and 20. This included an EF2 and an EF1 tornado that moved through densely populated parts of San Antonio, Texas. The San Antonio tornadoes caused major roof damage to numerous homes, apartment buildings, and businesses along their paths, and downed numerous trees. EF0 tornadoes also caused minor damage in Windcrest and Garden Ridge. Two simultaneous EF2 tornadoes caused significant damage to grain silos, homes, train cars, and power poles in and around the town of Thrall as well.[17]

February 25

EFU EF0 EF1 EF2 EF3 EF4 EF5
0 1 3 1 0 0 0

Five tornadoes struck on February 25 in Pennsylvania, Maryland, and Massachusetts. An EF2 in Pennsylvania damaged a metal horse barn, severely damaged two houses, and caused varying degrees of damage to 28 additional houses. An EF1 in Massachusetts caused damage to two houses in Goshen. Farther east, in and near Conway, numerous trees were snapped and uprooted and several other houses were severely damaged. This tornado was the first Massachusetts tornado on record during the month of February.[36][37]

February 28 – March 1

EFU EF0 EF1 EF2 EF3 EF4 EF5
0 18 42 8 3 1 0
EF3 damage to a glass plant in Naplate, Illinois.

A strong storm complex produced a significant and widespread tornado outbreak in and around the Ohio Valley and the Midwest. A moderate risk was issued by the Storm Prediction Center for Tuesday, February 28. This included a 15% hatched risk area for tornadoes.[38] Several damaging tornadoes touched down, including a violent EF4 that leveled and swept away homes at the north edge of Perryville, Missouri and killed one person. An EF3 struck Ottawa, Illinois and killed two people, while a fourth person was killed as a result of a long-track EF3 that passed near Crossville, Illinois and into Indiana.[39] An EF3 tornado also caused considerable damage in and around the town of Washburn, Illinois. caused This was the most intense February tornado outbreak to affect Illinois since 1950, with at least three tornadoes of EF3 or greater intensity, including the Ottawa event, which was the northernmost February EF3 on record in the state of Illinois. The tornado that impacted the Perryville area tracked at least 50 miles and was also the first violent tornado of 2017. Overall, this outbreak produced 72 tornadoes and killed four people.[17]

March

March continued the above average trend of the previous months. There were 176 preliminary reports of tornadoes in the United States during March, but 194 were confirmed. Notably, March reached above average activity in merely the first week, with two major outbreaks occurring in the span of 6 days. [40] [41]

March 6–7

EFU EF0 EF1 EF2 EF3 EF4 EF5
0 24 29 9 1 0 0
EF2 damage to a manufacturing facility in the southern part of Centerville, Iowa.

Following the issuance of an enhanced risk for severe weather from the Storm Prediction Center; including a 10% hatched risk area for tornadoes, an outbreak of strong tornadoes impacted the Midwest and Ohio Valley for the second time in the matter of days. Most of the tornadoes occurred during the nighttime and early morning hours, and were embedded in a large quasi-linear convective system. This included an EF3 that impacted the southern part of Oak Grove, Missouri, damaging or destroying nearly 500 buildings and injuring 12 people. A high-end EF2 tornado damaged or destroyed multiple homes near Smithville and Lathrop in Missouri. In Iowa, the towns of Muscatine, Centerville, and Seymour all sustained significant damage from EF2 tornadoes. Another EF2 caused heavy damage in Parthenon, Arkansas. An EF1 that touched down near the town of Bricelyn, Minnesota was the earliest Minnesota tornado on record. A total of 63 tornadoes occurred as a result of this outbreak, and numerous reports of hail and damaging straight-line winds were received as well. No fatalities occurred, though 19 people were injured.[42][43]

March 9

EFU EF0 EF1 EF2 EF3 EF4 EF5
0 7 7 3 0 0 0

A total of 17 tornadoes touched down in the states of Missouri, Tennessee, and Kentucky, including an EF2 that crossed from Missouri into Kentucky near Hickman, Kentucky. The tornado damaged a few sheds, destroyed several grain bins, and blew over some irrigation pivots. Another EF2 formed in Hickman, damaging 45 structures, knocking down numerous power poles, and snapping or uprooting many trees. The tornado briefly continued into Tennessee before dissipating. Near Doniphan, Missouri, an EF2 tornado moved through heavily forested areas, snapping and uprooting thousands of trees along its path and destroying a barn. An EF1 occurred in the southern part of Murray, Kentucky and caused extensive damage to two dugouts at a high school which had their roofs torn off and hurled, a well-built steel barn was damaged, and a building was destroyed by falling trees. Another EF1 struck the town of Bernie, Missouri, causing moderate damage to several homes.[44]

March 9 (Germany)

FU F0 F1 F2 F3 F4 F5
0 0 1 0 0 0 0

A highly photogenic F1 tornado accompanied by a rainbow was recorded and photographed in Kürnach, Germany and caused considerable damage to the roofs of 20 to 30 homes. Two trees were blown over and one garden shed was also blown down. An additional 80 houses were reportedly damaged to a lesser extent.[45][46]

March 12 (Brazil)

A tornado occurred near Canguçu in southern Rio Grande do Sul. A large number of trees were blown over and/or debarked and wind-blown vegetation showed evidence of rotation. Less than 10 hours afterwards, another tornado touched down in the city of São Francisco de Paula, where more than 400 houses were damaged, 40 of which were destroyed. Trees were snapped, zinc tiles were stripped from roofs, and metal structures were twisted. A 24-year-old man was killed as a result of the tornado.[47]

March 24

EFU EF0 EF1 EF2 EF3 EF4 EF5
0 2 6 3 0 0 0

A total of 11 tornadoes impacted the states of Washington, Louisiana, Texas and Arkansas. The first tornado of the event was an EF0 tornado that struck the Vancouver, Washington suburb of Orchards, causing minor tree and property damage. Later that day, an EF2 occurred near Marshall, Texas and snapped or uprooted many trees, destroyed a metal outbuilding, damaged multiple carports, and ripped roofing off several residences. Another EF2 tornado passed near the town of Gibson, Arkansas and destroyed four mobile homes and damaged several others. A third EF2 ripped the roof off a house and caused heavy damage to other structures near Lonsdale, Arkansas as well. A large EF1 wedge tornado passed near Natchitoches, Louisiana and damaged a metal warehouse, a pool supply building, and several outbuildings and homes. Another EF1 near Stanley started out as a waterspout that moved ashore, lifting three boats out of the water; two were launched 250-300 yards (230–270 m) while the other was deposited in the back yard of a house. Several homes were also damaged by this tornado. No fatalities or serious injuries occurred as a result of this event.[48]

March 28–31

EFU EF0 EF1 EF2 EF3 EF4 EF5
7 15 14 3 0 0 0

A four-day outbreak of 39 tornadoes impacted the Southern United States and Mid-Atlantic regions. Most of these tornadoes were weak, though a few EF2 tornadoes occurred, including one that struck the town of Oakdale, Louisiana and caused considerable damage to homes and businesses. Another EF2 tornado near Midkiff, Texas snapped many power poles, displaced grain silos, and damaged an outbuilding. The most significant tornado of the event was an EF2 that struck parts of Chesapeake and Virginia Beach, Virginia, heavily damaging numerous homes, downing many trees, and partially destroying a church. In addition, several weak EF0 and EF1 tornadoes impacted parts of the Houston metro as well as the Dallas–Fort Worth metroplex, resulting in relatively minor damage. No fatalities or serious injuries occurred as a result of this outbreak.[49][17]

April

There were 218 tornadoes reported in the United States in April, of which at least 215 were confirmed. Similar to the other months, April reached above average activity. The long-term monthly average is 155 tornado reports.[50][51][52]

April 2–3

EFU EF0 EF1 EF2 EF3 EF4 EF5
0 23 31 8 0 0 0

On April 2, the Storm Prediction Center issued a high risk for severe weather, including a 30% risk area for tornadoes across northern Louisiana into far eastern Texas. Strong, long-track tornadoes were expected to occur in the region.[53] Early that day, an EF1 tornado near Breaux Bridge, Louisiana killed a mother and daughter after destroying their mobile home while they were inside of it. Another EF1 struck Alexandria, causing considerable damage to homes and businesses. Later that afternoon and evening, multiple strong tornadoes touched down in the threat area. Several of these tornadoes were large and wedge shaped, though none exceeded EF2 in intensity. One of these EF2 tornadoes struck Belah and Trout, toppling metal truss towers, snapping many trees and power poles, and collapsing a boat business. Another EF2 struck Aimwell, damaging several homes and a church. An EF2 tornado near Winnsboro tossed trailers and mobile homes, and also destroyed a small home. Several tornadoes continued to touch down across parts of the Southern United States the following day, including an EF1 that killed one person after destroying a mobile home near Whitmire, South Carolina. An EF2 tornado near Cameron snapped many trees and power poles, and destroyed several barns and metal storage buildings. Several businesses in the downtown portion of Gordon, Georgia sustained significant damage as a result of an EF2 tornado as well. Overall, this outbreak produced 59 tornadoes and three deaths.[53][54][17]

April 4–6

EFU EF0 EF1 EF2 EF3 EF4 EF5
0 16 16 6 0 0 0

An EF2 tornado struck the town of Goodman, Missouri during a severe weather outbreak that began on April 4, causing major structural damage to an elementary school and multiple other buildings in the town, including homes and a fire station as well. Numerous trees were also uprooted or blown down. An EF1 also struck a chicken farm near Seligman, Missouri the same day, while another EF1 occurred near Bergman, Arkansas, damaging homes and destroying a garage and a mobile home.[55] A more significant and widespread outbreak of severe weather was anticipated on April 5, with the Storm Prediction Center initially issuing a moderate risk for severe thunderstorms across parts of the Southern United States.[56] At 16:29 UTC, the SPC upgraded the moderate risk to a high risk for parts of Georgia and South Carolina in anticipation of what was expected to be a major tornado outbreak.[57] However, a mainly unidirectional wind profile was present in the threat area that day, though explosive CAPE values and very steep lapse rates in combination with locally enhanced helicity due to outflow boundaries left behind by earlier storms were expected to compensate for this. Despite these factors, the outbreak of strong and destructive tornadoes that was expected did not occur, aided in part by cold-air damming in northern Georgia, along with large amounts of stratiform rain and shower activity occurring in parts of the state as well as in the Florida Panhandle. This blocked adequate moisture and lapse rates from building, and caused stabilization of the atmosphere in some parts of the threat area.

Despite the reduced threat, a large EF2 wedge tornado touched down near Bakerhill, Alabama and continued into Georgia before dissipating near Morris, causing major tree damage, ripping much of the roof off a brick house, and damaging several other structures. Another EF2 wedge tornado tracked from the eastern part of Johnston, South Carolina and directly through Ward, causing damage to a few homes and businesses and snapping or uprooting many trees. A large and damaging EF2 also tracked from just east of Cadwell, Georgia to near Soperton, destroying an auto body shop, multiple outbuildings, a radio antennae, and much of the second floor of a two-story home. Near Weston, chicken houses, outbuildings, a mobile home, and a peanut farm storage building were destroyed as a result of another EF2 tornado.[58][59] Weak tornadoes also touched down in Illinois, Indiana, Ohio, Kentucky, Tennessee, and Alabama as well, including rare anticyclonic EF1 tornadoes near Shelbyville, Tennessee and Eminence, Kentucky. On April 6, an enhanced risk for severe weather was issued for parts of the Mid-Atlanic region, and several additional tornadoes touched down. This included an EF0 tornado that touched down in Arlington, Virginia and moved directly into downtown Washington D.C. The D.C. tornado damaged light poles in the Pentagon parking lot, downed trees near the George Mason Memorial, and damaged the roof of the St. Aloysius Church. After the initial D.C. tornado dissipated, a second EF0 tornado downed several trees at Bolling Air Force Base, blowing the roof off of an apartment building and damaging flag posts. Further south, an isolated EF2 tornado near Yeehaw Junction, Florida downed many trees and damaged 20 homes, including three manufactured homes that were destroyed. Overall, this outbreak produced 38 tornadoes and no fatalities.[60]

April 28 – May 1

FU EF0 EF1 EF2 EF3 EF4 EF5
0 23 42 8 1 1 0
EF4 damage to a two-story brick house southwest of Canton, TX.

Numerous tornadoes ripped through the central United States as a powerful storm system developed in the Rockies. Mainly EF0 and EF1 tornadoes were seen on April 28. Tornadoes made multiple appearances in Louisiana, Texas, and Arkansas on this day. Massive swaths of large hail up to two inches (5.1 cm) in diameter and wind speeds up to 81 mph (135 km/h) were also reported on April 28.[61] On April 29, two long-lived and particularly dangerous tornadoes ripped through the Canton, Texas area, killing four people and injuring many others. One tornado was rated EF3 and the other was rated EF4 on the Enhanced Fujita Scale.[62][63] April 30 saw a total of 41 tornadoes touch down in Arkansas, Missouri, Louisiana, Mississippi, Tennessee, and Alabama. An EF2 tornado killed one person and caused considerable damage in the town of Durant, Mississippi.[64] Tornadoes were not the only threat with this storm complex as a large number of Flash Flood Watches went up in areas the storms were impacting. Isolated rainfall totals up to eleven inches were seen in far south Indiana and parts of Missouri. The heavy rainfall combined with the strong winds from the severe thunderstorms allowed for trees to be brought down easily in locations that received excessive rainfall. Streets were reported to be impassable and some roads were even closed due to the heavy rains.[65] A few generally weak tornadoes were scattered around on May 1. Tornadoes were not the primary threat on May 1; however straight line winds in excess of 85 mph (137 km/h) were reported throughout the eastern seaboard of the United States.[66] Overall, this outbreak produced 75 tornadoes and 20 deaths. Only five of the deaths were a direct result of tornadoes, while other deaths occurred from the flooding and heavy snow the storm system brought as well.[17]

May

There were 299 tornadoes reported in the United States in May, of which at least 288 were confirmed.[67][68]

May 15–20

Aerial view of the Prairie Lakes Estates mobile home park in Chetek, Wisconsin, where one person was killed by an EF3 tornado on May 16.
FU EF0 EF1 EF2 EF3 EF4 EF5
0 62 41 7 2 0 0

Throughout a six-day period, starting on May 15, numerous tornadoes occurred across portions of the Great Plains, Great Lakes, and Ohio Valley, some of which were strong. The most significant activity occurred on May 16, as numerous tornadoes touched down across the Great Plains states and as far north as Wisconsin. A high-end EF2 tornado struck the southern part of Elk City, Oklahoma, damaging or destroying numerous homes and businesses, tossing vehicles, and killing one person. Another strong tornado caused damage to homes in the town of Pawnee Rock, Kansas before it passed near Great Bend, debarking trees and completely destroying farm homes at high-end EF3 strength.[69] Another EF3 tornado moved through four counties in Wisconsin, destroying a mobile home park near Chetek, snapping and uprooting countless trees, and destroying a frame home near Conrath. The Chetek/Conrath tornado was officially the longest-tracked tornado in Wisconsin state history, and killed one person while injuring 25 others. Tornado activity was not as intense on May 17, though an EF2 embedded in a squall line ripped the roof off of a house near Galva, Illinois, injuring one person.[70] By May 18, a major outbreak of strong tornadoes was expected across the Great Plains, and a high risk of severe weather was issued by the Storm Prediction Center. However, most of the tornadoes that occurred that afternoon an evening were weak, with the strongest being three EF2s that occurred in parts of Texas and Oklahoma. One of these EF2s struck the city of Muskogee, Oklahoma, causing major damage to to trees, apartment buildings, and industrial buildings. Numerous EF0 and EF1 tornadoes were observed across multiple states on May 18 and 19 before the outbreak came to an end. Overall, this outbreak sequence produced 134 tornadoes and killed 2 people.[71]

May 23–24

FU EF0 EF1 EF2 EF3 EF4 EF5
0 19 12 5 0 0 0

A potent storm system made its way throughout the southern and midwestern portions of the United States on May 23. A high-end EF1 which touched down in Autryville, North Carolina destroyed a mobile home and the Autryville Volunteer Fire Department, causing one minor injury. Further south in Georgia, an EF2 touched down in Wilmington Island and continued to the Fort Pulaski National Monument, where the visitor center sustained damage. The tornado then entered the Atlantic Ocean as a waterspout and capsized the fishing vessel Miss Debbie. The three crew members aboard were presumed dead on May 27 after a multi-day search.[72] Tornado activity continued on May 24, with multiple tornadoes striking the Carolinas, including four strong EF2 tornadoes. One of these EF2 tornadoes heavily damaged an elementary school near Yadkinville, North Carolina, while another caused major tree and house damage near Statesville. Another EF2 tornado damaged a YMCA camp near Hanging Rock State Park. Near Saluda, South Carolina, an EF2 downed many trees and destroyed several outbuildings. Further north, the towns of Ironton and Park Layne, Ohio sustained considerable damage from EF1 tornadoes. Overall, this outbreak produced 37 tornadoes and killed three people.[73]

June

169 tornadoes were reported in the United States in June, of which at least 142 were confirmed.

June 12–14

EF2 tornado near Carpenter, Wyoming.
FU EF0 EF1 EF2 EF3 EF4 EF5
0 19 17 4 0 0 0

On June 12, the Storm Prediction Center issued a moderate risk for severe thunderstorms across southeast Wyoming, northwest Nebraska, and southwest South Dakota. The risk area included a 15% hatched area for tornadoes across southeastern Wyoming, and a 45% hatched area for severe hail across the entire moderate risk area.[74] In the early afternoon, the Storm Prediction Center issued a Particularly Dangerous Situation tornado watch across the hatched area for tornadoes, as supercells began to form along the northern part of a cold front.[75] Several tornadoes touched down in Colorado, Wyoming, and Nebraska, including four EF2 tornadoes.[76] One of these tornadoes was caught on video and photographed by numerous storm chasers as it passed near Carpenter, Wyoming, causing severe damage to outbuildings, vehicles, power poles, and homes in the area. An EF2 near Torrington tossed vehicles and horse trailers, heavily damaged a home, killed three horses, and injured two people. Another EF2 near Kaycee snapped many trees and destroyed a mobile home. In Nebraska, a long-track, multiple-vortex EF2 tornado passed near Bayard, tearing the roof and an exterior wall from a house, denuding trees, twisting irrigation pivots, damaging outbuildings, and destroying a garage. A separate brief EF1 tornado touched down in Bayard, causing considerable damage to a nursing home. In the late afternoon and early evening, the supercells merged into a squall line and produced isolated damaging wind gusts across South Dakota.[77]

The next day, the Storm Prediction Center issued an enhanced risk for severe weather, including a 10% risk area for tornadoes across parts of the Dakotas and Minnesota.[78] In the mid-afternoon, supercells began to form along a cold front in eastern South Dakota. Additionally, numerous severe thunderstorms formed along the front from Minnesota to Texas. The storms produced multiple weak tornadoes throughout the risk area, none of which exceeded EF1 in intensity.[79] By early evening, the cells merged into a squall line and continued east. The squall line continued to produce a few more tornadoes, in addition to large hail and damaging straight-line winds.[80] On June 14, the squall line continued to produce wind damage, as well as producing a few more weak tornadoes in Wisconsin, all of which did relatively minor damage. Overall, this outbreak produced 40 tornadoes and did not result in any fatalities.[81]

June 16

FU EF0 EF1 EF2 EF3 EF4 EF5
0 4 5 1 0 0 0

Two tornadoes spawned by semi-discrete supercell thunderstorms embedded within a larger line of severe storms produced severe damage in the southern suburbs of Omaha, Nebraska on the evening of June 16. One of these tornadoes was a high-end EF2 that downed many trees and caused major structural damage to homes as it moved through multiple subdivisions in the southern part of Bellevue. The other tornado was an EF1 that struck Offutt Air Force Base, moving planes from their original locations, downing trees, and damaging the roofs of several structures. Several other weak tornadoes were observed across parts of Nebraska and Kansas that evening. In addition, an EF1 tornado struck Pascagoula, Mississippi, causing considerable structural damage to commercial buildings. A total of 10 tornadoes were confirmed.[82][83]

June 28

FU EF0 EF1 EF2 EF3 EF4 EF5
0 10 14 3 0 0 0

A small outbreak of tornadoes affected the Midwestern United States, with the most intense tornadoes touching down in Iowa. The most significant tornado of the event was an EF2 that struck the small town of Prairieburg, Iowa, where a grain elevator sustained major damage, mobile homes were destroyed, and trees were snapped. An EF2 tornado near Monticello destroyed garages, outbuildings, and grain bins, while another EF2 near Sidney ripped the roof off of a home, snapped trees, and destroyed outbuildings. Multiple other weak tornadoes were observed across parts of Wisconsin, Minnesota, Missouri, and Illinois. A total of 27 tornadoes were confirmed.[84]

July

83 tornadoes were reported in the United States in July, of which at least 82 were confirmed.

August

145 tornadoes were reported in the United States in August, of which at least 114 were confirmed.

August 6

During the early morning hours of August 6, three tornadoes touched down in Tulsa, Oklahoma and surrounding areas, along the leading edge of a bow echo within the eastern segment of a mesoscale convective complex that began sweeping through the state on the evening of August 5. The strongest tornado began at 1:19 a.m. CDT (06:19 UTC) in a residential neighborhood east of South Harvard Avenue and south of East 36th Street South; this tornado produced EF2 damage from eastern Tulsa to just north of Broken Arrow. The most significant damage along its 6.9-mile-long (11.1 km) path was reported in a commercial area in southeast Tulsa (between South Yale Avenue and South Sheridan Road, along and near East 41st Street South), where multiple businesses had their roofs torn off and the exterior walls on some of the affected buildings had collapsed. The 18-story Remington Tower office building (near 41st Street and Skelly Drive) experienced severe window and facade damage; the tornado also caused structural and roof damage to the Promenade Mall, and caused infrastructure damage to the BOK Financial Corporation's operations center (near 41st and Sheridan), disabling its online, mobile and automated telephone systems. At least eight people were rescued from a T.G.I. Friday's location in the Highland Plaza shopping district near 41st and Yale Avenue, after its roof collapsed into the main part of the building.[85][86][87][88] Damage to ten of the affected businesses in the Highland Plaza district was so severe that city management designated them to be condemned.[89]

The rare August tornado, the first to hit the Tulsa area since 1958 (and only the third to strike the area since official tornado records began being kept in 1950), injured 26 people – with two experiencing serious injuries – in the eastern part of the city. Despite the presence of strong low-level rotation that was detected on radar, the Tulsa County Emergency Management Agency did not activate civil defense sirens in Tulsa proper as the local National Weather Service forecast office did not issue a tornado warning until 1:25 a.m. CDT (06:25 UTC), two minutes before it spawned an EF1 tornado that spanned a 2.9-mile-long (4.7 km) track across Broken Arrow, causing roof damage to numerous homes and bringing down several large tree limbs in the suburb.[90][91] A second EF1 touched down east of Oologah at 1:32 a.m. CDT (06:32 UTC), damaging several trees, barns and one home, and downed several electrical poles.[85][92] A fourth, weak tornado was later confirmed through damage surveys six miles south of Chelsea, which touched down at 2:11 a.m. (07:11 UTC) and uprooted several large trees; this tornado was rated as an EF1.[93][94]

August 25–31 (Hurricane Harvey)

FU EF0 EF1 EF2 EF3 EF4 EF5
0 36 13 3 0 0 0

September

32 tornadoes were reported in the United States in September, of which at least 23 were confirmed.

October

85 tornadoes were reported in the United States in October, of which at least 52 were confirmed.

October 21–23

FU EF0 EF1 EF2 EF3 EF4 EF5
3 1 11 3 0 0 0

On the night of October 21, a tornado touched down in central Oklahoma near Norman in the vicinity of Interstate 35 and Oklahoma State Highway 9. The tornado caused damage to trees and power lines and destroyed several prefabricated metal structures. The touchdown of the tornado was seen on live television as storm chasers Val and Amy Castor from KWTV-DT were in the immediate vicinity of the tornado when it formed, causing light damage to their vehicle.[95] The tornado also did damage to part of the Riverwind Casino which at the time was hosting a Beach Boys concert attended by Oklahoma Governor Mary Fallin. Despite the damage, no injuries were reported.[96]

November

42 tornadoes have been reported in the United States in November, of which at least 37 have been confirmed.

November 5

FU EF0 EF1 EF2 EF3 EF4 EF5
0 3 16 5 0 0 0

See also

References

  1. ^ "U.S. Tornadoes: Daily Count and Running Annual Trend". Storm Prediction Center. February 9, 2016. Retrieved February 10, 2017.
  2. ^ "Annual U.S. Killer Tornado Statistics". Storm Prediction Center. 2017. Retrieved February 1, 2017.
  3. ^ a b "Monthly and Annual U.S. Tornado Summaries". Storm Prediction Center. February 18, 2017. Retrieved February 23, 2017.
  4. ^ "January tornado averages 1991-2010".
  5. ^ "Annual Severe Weather Report Summary 2017". National Weather Service Storm Prediction Center. Storm Prediction Center; Norman, OK. Retrieved May 19, 2017.
  6. ^ Ariel Cohen (December 26, 2016). "Day 4-8 Severe Weather Outlook Issued on Dec 26, 2016". Storm Prediction Center. Retrieved January 2, 2017.
  7. ^ Brynn Kerr (December 31, 2016). "Dec 31, 2016 0830 UTC Day 3 Severe Thunderstorm Outlook". Storm Prediction Center. Retrieved January 2, 2017.
  8. ^ Brynn Kerr (January 1, 2016). "Jan 1, 2017 0700 UTC Day 2 Convective Outlook". Storm Prediction Center. Retrieved January 2, 2017.
  9. ^ Jeff Peters (January 2, 2016). "Jan 2, 2017 2000 UTC Day 1 Convective Outlook". Storm Prediction Center. Retrieved January 2, 2017.
  10. ^ "SPC Storm Reports for 01/02/17". Storm Prediction Center. January 2, 2017. Retrieved January 2, 2017.
  11. ^ "NWS Damage Assessment Toolkit". January 19, 2016. Retrieved January 19, 2017.
  12. ^ Global Catastrophe Recap: January 2017 (PDF) (Report). Aon Benfield. February 8, 2017. Retrieved February 18, 2017.
  13. ^ Ryan Jewell (January 12, 2016). "Day 4-8 Severe Weather Outlook Issued on Jan 12, 2017". Storm Prediction Center. Retrieved January 21, 2017.
  14. ^ Chris Broyles (January 13, 2016). "Jan 13, 2017 0830 UTC Day 3 Severe Thunderstorm Outlook". Storm Prediction Center. Retrieved January 21, 2017.
  15. ^ Aaron Gleason (January 14, 2016). "Jan 14, 2017 1730 UTC Day 2 Convective Outlook". Storm Prediction Center. Retrieved January 21, 2017.
  16. ^ Aaron Gleason (January 15, 2016). "Jan 15, 2017 2000 UTC Day 1 Convective Outlook". Storm Prediction Center. Retrieved January 21, 2017.
  17. ^ a b c d e f https://apps.dat.noaa.gov/StormDamage/DamageViewer/
  18. ^ Aaron Gleason (January 21, 2017). "Jan 21, 2017 0100 UTC Day 1 Convective Outlook". Storm Prediction Center. Retrieved January 23, 2017.
  19. ^ NWS Damage Survey for January 21, 2017 Tornado Event (Report). Iowa Environmental Mesonet. January 22, 2017. Retrieved January 22, 2017. {{cite report}}: Unknown parameter |agency= ignored (help)
  20. ^ NWS Damage Survey for the 01/21/2017 Perry County Mississippi Tornado Event (Report). Iowa Environmental Mesonet. January 22, 2017. Retrieved January 22, 2017. {{cite report}}: Unknown parameter |agency= ignored (help)
  21. ^ Brynn Kerr (January 21, 2017). "Jan 21, 2017 2000 UTC Day 1 Convective Outlook". Storm Prediction Center. Retrieved January 23, 2017.
  22. ^ "SPC Storm Reports for 01/21/17". Storm Prediction Center. January 21, 2017. Retrieved January 23, 2017.
  23. ^ Rich Thompson; Ariel Cohen (January 21, 2017). "Jan 22, 2017 1300 UTC Day 1 Convective Outlook". Storm Prediction Center. Retrieved January 23, 2017.
  24. ^ Jason Samenow (January 22, 2017). "Deadly tornadoes strike South; 'high risk' for more as freak storm approaches East Coast". The Washington Post. Retrieved January 23, 2017.
  25. ^ The Albany Herald (January 22, 2017). "Reports indicate at least four people have died after a severe storm reported to be a tornado slammed into east Albany Sunday". Twitter. Retrieved January 23, 2017.
  26. ^ Bakari Savage; Ethan Calloway (January 22, 2017). "14 die in Georgia storms; more than 50 injured in Albany". News 4 Jax. Retrieved January 23, 2017.
  27. ^ Lauren Foreman (January 27, 2017). "Georgia death toll increases to 16 after tornadoes". The Atlanta Journal-Constitution. Retrieved January 27, 2017.
  28. ^ "Albany, Georgia, EF3 Tornado Traveled At Least 70 Miles; January 21-23, 2017 Outbreak Among Largest on Record in Winter". Weather Channel. January 31, 2017. Retrieved February 3, 2017.
  29. ^ "February average".
  30. ^ "Annual Severe Weather Report Summary 2017". National Weather Service Storm Prediction Center. Storm Prediction Center; Norman, OK. Retrieved May 19, 2017.
  31. ^ Louisiana Event Report: EF2 Tornado (Report). National Centers for Environmental Information. 2017. Retrieved May 17, 2017. {{cite report}}: Unknown parameter |agency= ignored (help)
  32. ^ Louisiana Event Report: EF2 Tornado (Report). National Centers for Environmental Information. 2017. Retrieved May 17, 2017. {{cite report}}: Unknown parameter |agency= ignored (help)
  33. ^ Louisiana Event Report: EF2 Tornado (Report). National Centers for Environmental Information. 2017. Retrieved May 17, 2017. {{cite report}}: Unknown parameter |agency= ignored (help)
  34. ^ Louisiana Event Report: EF1 Tornado (Report). National Centers for Environmental Information. 2017. Retrieved May 17, 2017. {{cite report}}: Unknown parameter |agency= ignored (help)
  35. ^ "Feb 7, 2017 1300 UTC Day 1 Convective Outlook".
  36. ^ "Tornado Confirmed in Goshen MA in Hampshire County and Conway MA in Franklin County". Iowa Environmental Mesonet. National Weather Service Weather Forecast Office in Taunton, Massachusetts. February 26, 2017. Retrieved February 26, 2017.
  37. ^ "Storm Prediction Center Feb 25, 2017 1630 UTC Day 1 Convective Outlook". www.spc.noaa.gov. Retrieved February 27, 2017.
  38. ^ Ariel Cohen (February 28, 2017). "Feb 28, 2017 1630 UTC Day 1 Convective Outlook". Storm Prediction Center. Retrieved March 24, 2017.
  39. ^ Marilia Brocchetto; Jason Hanna; Keith Allen (March 1, 2017). "Tornadoes rip through Midwest, Southeast; 3 killed". CNN. Retrieved March 24, 2017.
  40. ^ "Annual Severe Weather Report Summary 2017". National Weather Service Storm Prediction Center. Storm Prediction Center; Norman, OK. Retrieved May 19, 2017.
  41. ^ "Inflation Adjusted Annual Tornado Running Total". National Weather Service Storm Prediction Center. Storm Prediction Center; Norman, OK. Retrieved May 19, 2017.
  42. ^ Summary of March 06 2017 Severe Weather Outbreak - Earliest Known Tornado in Minnesota's History (Report). National Weather Service. March 7, 2017. Retrieved March 8, 2017. {{cite report}}: Unknown parameter |agency= ignored (help)
  43. ^ "Storm Prediction Center 20170306's Storm Reports". www.spc.noaa.gov. Retrieved March 7, 2017.
  44. ^ Center, Storm Prediction. "Storm Prediction Center Storm Reports Page". www.spc.noaa.gov. Retrieved March 12, 2017.
  45. ^ "Tornado and Rainbow in Germany Captured in Stunning Photograph". The Weather Channel. Retrieved March 13, 2017.
  46. ^ "WATCH: Tornado hits north Bavaria, damaging dozens of houses". March 10, 2017. Retrieved March 13, 2017.
  47. ^ http://jcrs.uol.com.br/_conteudo/2017/03/geral/551406-cidade-da-serra-foi-atingida-por-tornado-afirma-metsul.html
  48. ^ "Updated NWS Damage Survey For March 24, 2017 Tornado Event". Iowa Environmental Mesonet. National Weather Service Weather Forecast Office in Shreveport, Louisiana. Retrieved March 28, 2017.
  49. ^ Tornado Confirmed in Chesapeake/Virginia Beach (Report). Iowa Environmental Mesonet. April 1, 2017. Retrieved April 1, 2017. {{cite report}}: Unknown parameter |agency= ignored (help)
  50. ^ "Average tornado count for April". {{cite web}}: Cite has empty unknown parameter: |dead-url= (help)
  51. ^ "Annual Severe Weather Report Summary 2017". National Weather Service Storm Prediction Center. Storm Prediction Center; Norman, OK. Retrieved May 19, 2017.
  52. ^ "Inflation Adjusted Annual Tornado Running Total". National Weather Service Storm Prediction Center. Storm Prediction Center; Norman, OK. Retrieved May 19, 2017.
  53. ^ a b "SPC Storm Reports for 04/02/17". Norman, Oklahoma: Storm Prediction Center. April 3, 2017. Retrieved April 3, 2017.
  54. ^ "SPC Storm Reports for 04/03/17". Norman, Oklahoma: Storm Prediction Center. April 3, 2017. Retrieved April 3, 2017.
  55. ^ "Storm Prediction Center 20170404's Storm Reports". Storm Prediction Center. Retrieved April 5, 2017.
  56. ^ "Public Severe Weather Outlook". Storm Prediction Center.
  57. ^ Ariel Cohen (April 5, 2017). "Apr 5, 2017 1630 UTC Day 1 Convective Outlook". Storm Prediction Center. Retrieved April 8, 2017.
  58. ^ NWS Damage Survey For April 5th Tornado Event (Report). Iowa Environmental Mesonet. April 8, 2017. Retrieved April 8, 2017. {{cite report}}: Unknown parameter |agency= ignored (help)
  59. ^ Tornado Confirmed Near Johnston to Ward in Edgefield and Saluda Counties South Carolina (Report). Iowa Environmental Mesonet. April 6, 2017. Retrieved April 8, 2017. {{cite report}}: Unknown parameter |agency= ignored (help)
  60. ^ "SPC Storm Reports for 04/06/17". Storm Prediction Center. Storm Prediction Center. Retrieved April 6, 2017.
  61. ^ "Filtered Storm Reports for 04/28". Storm Prediction Center. Storm Prediction Center, Norman OK. Retrieved April 30, 2017.
  62. ^ "Four Dead After Three Tornadoes Strike East of the DFW Area". NBC News. April 30, 2017. Retrieved April 30, 2017.
  63. ^ "Filtered Storm Reports for 04/29". Storm Prediction Center. Storm Prediction Center; Norman, OK. Retrieved April 30, 2017.
  64. ^ "Filtered Storm Reports for 04/30". Storm Prediction Center. Storm Prediction Center; Norman, OK. Retrieved April 30, 2017.
  65. ^ Baumer, Stephanie. "Heavy rains cause flooding, road closures, evacuations throughout area". KMOV St. Louis. KMOV. Retrieved May 1, 2017.
  66. ^ "Storm Reports for 05/01". Storm Prediction Center. Storm Prediction Center; Norman, OK. Retrieved May 2, 2017.
  67. ^ "Annual Severe Weather Report Summary 2017". National Weather Service Storm Prediction Center. Storm Prediction Center; Norman, OK. Retrieved May 19, 2017.
  68. ^ "Inflation Adjusted Annual Tornado Running Total". National Weather Service Storm Prediction Center. Storm Prediction Center; Norman, OK. Retrieved May 19, 2017.
  69. ^ https://apps.dat.noaa.gov/StormDamage/DamageViewer/
  70. ^ "Filtered Storm Reports for 05/17". Storm Prediction Center. Storm Prediction Center; Norman, OK. Retrieved May 18, 2017.
  71. ^ https://apps.dat.noaa.gov/StormDamage/DamageViewer/
  72. ^ Frank Marro (May 27, 2017). "Search for crew of capsized boat suspended; crew members presumed dead". Tybee Island, Georgia: WTGS. Retrieved May 30, 2017.
  73. ^ "SPC Filtered Storm Reports for 05/23/17". Storm Prediction Center. Storm Prediction Center; Norman, OK. Retrieved June 1, 2017.
  74. ^ Jun 12, 2017 2000 UTC Day 1 Convective Outlook (Report). Storm Prediction Center. June 12, 2017. Retrieved September 24, 2017. {{cite report}}: Unknown parameter |agency= ignored (help)
  75. ^ Particularly Dangerous Situation (PDS) Tornado Watch 317 (Report). Storm Prediction Center. June 12, 2017. Retrieved September 24, 2017. {{cite report}}: Unknown parameter |agency= ignored (help)
  76. ^ (Report). Iowa Environmental Mesonet. June 20, 2017 http://mesonet.agron.iastate.edu/wx/afos/p.php?&pil=PNSCYS&e=201706202313. Retrieved September 24, 2017. {{cite report}}: Missing or empty |title= (help); Unknown parameter |agency= ignored (help)
  77. ^ 20170612’s Storm Reports (Report). Storm Prediction Center. June 12, 2017. Retrieved September 24, 2017. {{cite report}}: Unknown parameter |agency= ignored (help)
  78. ^ Jun 13, 2017 2000 UTC Day 1 Convective Outlook (Report). Storm Prediction Center. June 13, 2017. Retrieved September 24, 2017. {{cite report}}: Unknown parameter |agency= ignored (help)
  79. ^ NWS Damage Survey for 06/13/17 Tornado Event Update #1 (Report). Iowa Environmental Mesonet. June 15, 2017. Retrieved September 24, 2017. {{cite report}}: Unknown parameter |agency= ignored (help)
  80. ^ 20170613’s Storm Reports (Report). Storm Prediction Center. June 13, 2017. Retrieved September 24, 2017. {{cite report}}: Unknown parameter |agency= ignored (help)
  81. ^ 20170614’s Storm Reports (Report). Storm Prediction Center. June 14, 2017. Retrieved September 24, 2017. {{cite report}}: Unknown parameter |agency= ignored (help)
  82. ^ https://apps.dat.noaa.gov/StormDamage/DamageViewer/
  83. ^ "June 16th 2017 Severe Weather". NWS Omaha. NWS Omaha. Retrieved November 20, 2017.
  84. ^ https://apps.dat.noaa.gov/StormDamage/DamageViewer/
  85. ^ a b NWS Damage Survey for 8/6/17 Tornado Event (Report). Iowa Environmental Mesonet. August 6, 2017. Retrieved August 7, 2017. {{cite report}}: Unknown parameter |agency= ignored (help)
  86. ^ "Three Tornadoes Struck Green Country Early Sunday". KOTV-DT. Griffin Communications. August 7, 2017.
  87. ^ "NWS confirms EF-2 tornado damage in midtown Tulsa". KTUL. Sinclair Broadcast Group. August 6, 2017. Retrieved August 7, 2017.
  88. ^ Ken Miller (August 6, 2017). "Rare August tornado sends 30 to hospital in Tulsa; no deaths". KOKI-TV. Cox Media Group. Associated Press. Retrieved August 7, 2017.
  89. ^ Tim Talley (August 7, 2017). "10 businesses in Tulsa condemned following tornado damage". The Washington Post. Nash Holdings LLC. Associated Press. Retrieved August 8, 2017.
  90. ^ Paighten Harkins (August 7, 2017). "EF2 tornado that hurt 30, ripped through midtown, was rare in 2 ways". Tulsa World. BH Media.
  91. ^ "Why was there no warning before devastating Tulsa tornado?". CBS News. CBS Interactive. August 7, 2017.
  92. ^ Clayton Youngman (August 6, 2017). "NWS: 2 tornadoes touched down in Tulsa metro Sunday; 3rd tornado hit Rogers County". KTUL. Sinclair Broadcast Group. Retrieved August 7, 2017.
  93. ^ Jessica Remer (August 7, 2017). "NWS confirms 4th tornado; damage found near Chelsea". KTUL. Sinclair Broadcast Group. Retrieved August 8, 2017.
  94. ^ "NWS Confirms Fourth Tornado Touched In Chelsea". KOTV-DT. Griffin Communications. August 7, 2017. Retrieved August 8, 2017.
  95. ^ "Tornado Hits Storm Chasers!". YouTube. Val Castor. Retrieved October 23, 2017.
  96. ^ "Apparent Tornado Causes Damage At Riverwind Casino In Norman". News9.com. KWTV-DT. Retrieved October 21, 2017.