1Most severe tornado damage; see Enhanced Fujita scale 2Time from first tornado to last tornado
The March 18–24, 2012 tornado outbreak sequence was a long lasting tornado outbreak that occurred due to a slow moving, but powerful trough and cutoff low. The outbreak began in the Great Plains, where, over a two-day period, several tornadoes touched down, some of which were significant. The North Platte area was damaged by an EF3 that was produced by a supercell that spawned many tornadoes throughout its lifespan. The tornadic activity then shifted the Southern United States over subsequent days, particularly in Louisiana and Mississippi.[2] These states were struck by a series of tornadoes for 3 days, most of which were relatively weak on the Enhanced Fujita Scale. However, a few reached EF2 intensity and caused considerable damage. Tornado activity continued across the Ohio Valley on the 23rd, with one confirmed fatality in southern Illinois.
Meteorological synopsis
March 18 – 19
As a powerful trough ejected into the Central Plains on March 18, the Storm Prediction Center issued a Slight risk for Severe Weather stretching from southern Nebraska to western Texas. That evening, many supercells evolved across the Texas Panhandle and Oklahoma, producing large hail and damaging wind gusts. As the supercells moved towards the northeast, four tornadoes were produced across western Oklahoma, all rated an EF0 on the Enhanced Fujita Scale. Early that night, a tornado-producing supercell moved across southwestern Nebraska, where four tornadoes were confirmed. The first was an EF3, the second was an EF1, the third was an EF3, and the fourth was an EF2. Severe damage was noted just to the west of the city of North Platte, Nebraska.
The following day, the Storm Prediction Center issued a Moderate risk of Severe Weather, encompassing much of central and eastern Texas, into southeastern Oklahoma and extreme western Arkansas. Although this event was not as severe as initially anticipated, an EF1 tornado was confirmed in Arkansas, as well as an EF0 in Minnesota, and an EF2 in central Texas, where extensive damage was noted near the city of Devine.
March 20 – 22
The slow moving system produced a series of tornadoes across the South for 3 days. Most of the damage occurred in Mississippi and Louisiana. An EF2 caused significant damage near Port Gibson, Mississippi, and another EF2 badly damaged a home near Pelahatchie. A tornado also damaged at least 20 homes in Lake Arthur, Louisiana. Other tornadoes occurred along the Gulf Coast, and one touched down in North Carolina as well.
March 23–24
A slight risk was issued for parts of the Ohio Valley, but notable tornado activity was not expected. However several tornadoes touched down across Indiana, Illinois, Ohio, and Kentucky. Supercell thunderstorms developed and produced large hail as well. One EF1 tornado caused damage to homes in the Louisville metro area.[3] Another EF2 tornado caused one fatality in southern Illinois.[4] On the 24th, an isolated EF0 touched down in Florida as the outbreak moved eastward.
Two homes were damaged. Two transmission towers and several garages and outbuildings were destroyed. Extensive tree and power line damage occurred. Two people were injured.
A semi truck and fence line were destroyed. A garage was damaged and an irrigation pivot was destroyed. Extensive tree damage occurred. One person was injured.
Two homes were destroyed and two others suffered significant damage. Fifteen train cars and an irrigation pivot were overturned. Two people were injured.
A barn, two homes, and a garage were destroyed with debris from the barn driven into the ground. An outbuilding was destroyed. Extensive tree damage occurred.
A church was damaged, a small storage building was destroyed, and a nine tower irrigation pivot system was twisted and overturned. Trees were uprooted.
A camper was flipped, a cinder block fence was overturned, and a barn and trailer were destroyed. One house suffered significant roof damage and several power poles were damaged. A horse trailer and a cotton trailer were tossed, and a travel trailer was destroyed. Three people were injured.
A semi trailer was overturned and a mobile home was destroyed. Multiple permanent homes were badly damaged or destroyed, and a steel storage shed was destroyed as well. Trees and power lines were also downed.
Second-earliest tornado on record in Minnesota history (earliest was on March 18, 1968). Numerous trees and several structures were damaged along the tornado's path.
A tied-down mobile home was rolled upside down. Five homes and city hall sustained significant roof damage. About 20 homes received minor damage. Several outbuildings were destroyed and numerous trees were downed. There was one minor injury.
Two mobile homes were destroyed and four power poles were snapped. Numerous trees were snapped or uprooted, one of which caused significant damage to a house.
1 death – A double wide mobile home was thrown 100 feet (30 m) and destroyed. One home and three barns were damaged, one heavily. Several trees were uprooted or snapped. In addition to the fatality, two people were injured.
Brief tornado significantly damaged a pole barn and a nearby home. Debris from the barn was found up to 50 yd (46 m) upstream. Several trees were also uprooted and many more were snapped.
