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Tropical Storm Chris (2006)

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Tropical Storm Chris
Tropical storm (SSHWS/NWS)
Tropical Storm Chris on August 2, 2006
FormedAugust 1, 2006
DissipatedAugust 4, 2006
Highest winds1-minute sustained: 65 mph (100 km/h)
Lowest pressure1001 mbar (hPa); 29.56 inHg
FatalitiesNone reported
DamageMinimal
Areas affectedLeeward Islands, Puerto Rico, Turks & Caicos Islands, Hispaniola, Bahamas, eastern Cuba
Part of the 2006 Atlantic hurricane season

Tropical Storm Chris was the fourth tropical storm of the 2006 Atlantic hurricane season. Forming on July 31 in the Atlantic Ocean east of the Leeward Islands from a tropical wave, Chris moved generally to the west-northwest, skirting the northern fringes of the Caribbean islands. Chris was a relatively short-lived storm, reaching a peak intensity with winds at 65 mph (100 km/h) on August 2, while positioned north of St. Martin. The storm gradually weakened before finally dissipating on August 5, near eastern Cuba. Overall impact was minimal, amounting to moderate amounts of rainfall throughout its path. No deaths were reported.

Meteorological history

Map plotting the storm's track and intensity, according to the Saffir–Simpson scale
Map key
Saffir–Simpson scale
  Tropical depression (≤38 mph, ≤62 km/h)
  Tropical storm (39–73 mph, 63–118 km/h)
  Category 1 (74–95 mph, 119–153 km/h)
  Category 2 (96–110 mph, 154–177 km/h)
  Category 3 (111–129 mph, 178–208 km/h)
  Category 4 (130–156 mph, 209–251 km/h)
  Category 5 (≥157 mph, ≥252 km/h)
  Unknown
Storm type
triangle Extratropical cyclone, remnant low, tropical disturbance, or monsoon depression

A tropical wave moved westward off the coast of Africa on July 27. Initially, virgorous convection persisted throughout the wave axis, though dry air greatly diminished the convection on July 28. The wind field remained well-defined as it continued westward, and deep convection increased two days later along the northern end of the wave axis. Dvorak classifications began on July 30 in response to an increase in vertical depth and organization of the convection. On July 31 a buoy recorded a change of wind direction from northeast to west, indicating a small low pressure area formed. Convective organization rapidly increased as it turned to the northwest, and the system developed into Tropical Depression Three on August 1 while located about 235 miles (375 km) east-southeast of Barbuda.[1]

Forecasters initially predicted wind shear from an upper level low would prevent strengthening and cause dissipation within three days.[2] However, the depression continued to organize as deep convection continued to develop near the circulation despite moderate amounts of wind shear, and the system intensified into Tropical Storm Chris six hours after developing.[1][3] The convection gradually consolidated over the system, and by late on the 1st Chris reached winds of 60 mph (95 km/h) while passing 50 miles (80 km) north of the northern Leeward Islands.[4] The structure of Chris continued to improve and become more symmetrical, and an upper level eye feature developed early on August 2. Outflow improved in all quadrants, as well,[5] and the storm reached a peak intensity of 65 mph (100 km/h) shortly thereafter while located 120 miles (195 km) east of St. Thomas. Despite initial predictions of Chris intensifying to a hurricane as a ridge of high pressure forced it west-northwestward,[6] upper level shear dissipated the well-defined inner core of the storm, and Chris started to weaken.[7]

Chris weakening due to heavy wind shear

Early on August 3, strong wind shear over Chris detached the deep convection from the low level circulation, while a building ridge to its north turned the storm towards the west into an area of drier air.[1][8] By mid-day on the 3rd the circulation was devoid of any convection within 85 miles (135 km), while the deeper convection spread across Puerto Rico and Hispaniola.[9] Late on August 3, deep convection developed over the center of circulation again,[10] though persistent vertical shear weakened Chris to a tropical depression on August 4. Due to computer models predicting lesser amounts of shear, forecasters indicated the possibility of moderate strengthening in the Gulf of Mexico to a 60 mph (95 km/h) storm.[11] However, convection remained minimal, and Chris degenerated into a remnant area of low pressure late on August 4.[1] Late on August 5, convection increased in the remnants of the storm, and forecasters indicated the potential for slow development over the Gulf of Mexico[12] due to marginally favorable conditions.[13] Redevelopment never occurred, and the remnant circulation dissipated near Havana, Cuba on August 6.[1]

Preparations

Chris as seen from aboard the International Space Station

When the National Hurricane Center issued its first advisory on Tropical Depression Three, the governments of Antigua and Barbuda, Anguilla, Saint Kitts and Nevis, and the British Virgin Islands issued a Tropical Storm Warning for their respective territories.[14] When the depression strengthened to Tropical Storm Chris, Tropical Storm Warnings were also issued for Saba, Sint Eustatius, Saint-Barthélemy, and Saint Martin.[15] Three Royal Caribbean cruise ships re-routed their paths to avoid the storm.[16] Federal Emergency Management Agency (FEMA) representatives coordinated with local emergency management officials in the United States Virgin Islands to determine if preparation necessities would be adequate, such as hospital usage, shelters, and sand bags.[17]

On August 1, officials in Puerto Rico issued a tropical storm warning for the island.[18] The next day, approximately 600 tourists evacuated the islands of Vieques and Culebra.[16] On August 2, the government of the Bahamas issued a Hurricane Watch for the Turks and Caicos Islands, the Acklins and Crooked Islands, Ragged Island, Inagua, and Mayaguana.[19] In response to the threat, officials urged citizens to stock up on hurricane supplies, while boat owners in Staniel Cay secured their boats in preparation for the storm.[16]

In response to the storm's projected path into the Gulf of Mexico, prices for crude oil rose on the New York Mercantile Exchange at branch offices in London.[20] Natural gas prices rose considerably in New York Mercantile Exchange electronic trading on August 2. Anticipation of a threat to supply by a potential Hurricane Chris coupled with high demand during an ongoing heat wave were cited as factors in the price move.[21] In New Orleans, officials including Mayor Ray Nagin prepared for a possible evacuation of the city if Chris entered the Gulf of Mexico as a hurricane. The evacuation plan included moving all residents out of the city as a worst-case scenario, intended to avoid a re-occurrence of Hurricane Katrina around one year prior.[22] Florida Emergency Management requested ten mobile recovery centers, and placed hospitals in the Florida Keys on standby for evacuation. Officials in Mississippi identified the need for 110 to assist in an evacuation process in case of a possible landfall. Both Louisiana and Texas emergency operation centers monitored the progress of the storm, though did not execute any preparation action.[17]

Impact

Rainfall totals from Tropical Storm Chris in Puerto Rico and the Dominican Republic

Despite its initial threat, Chris caused little impact in the Lesser Antilles.[23] Overall damage from Chris was minimal. The storm dropped light rainfall in Puerto Rico, peaking at 3.09 inches (78 mm) in Fajardo.[1] The rainfall from the storm caused the Fajardo River to overflow its banks, which temporarily closed a highway in the northeastern portion of the island.[24]

Rainfall reached up to 2 inches (50 mm) across portions of Hispaniola, the Turks and Caicos, the Bahamas, and eastern Cuba, and reached 4 inches (100 mm) in some mountainous areas.[25] In Santo Domingo in the Dominican Republic, heavy rainfall caused severe flooding. Las Américas reported 5.01 inches (127 mm) of rainfall from Chris.[26] Several people were left temporarily homeless due to flooding entering their households. The flooding left many roads impassable near the capital city, and also resulted in landslides.[27] The flooding also covered rice fields in the northeastern portion of the country. The National Office of Meteorology issued flood warnings for residents in low-lying areas and near rivers in the northeast and southeast portions of the country. Despite the flooding, overall damage was minor, and there are no casualties associated with Chris.[28]

See also

References

  1. ^ a b c d e f Stacy Stewart (2006). "Tropical Storm Chris Tropical Cyclone Report" (PDF). National Hurricane Center. Retrieved 2006-12-12.
  2. ^ Franklin (2006). "Tropical Depression Three Discussion One". NHC. Retrieved 2006-08-22.
  3. ^ Stewart (2006). "Tropical Storm Chris Discussion Two". NHC. Retrieved 2006-08-24.
  4. ^ Knabb (2006). "Tropical Storm Chris Discussion Six". NHC. Retrieved 2006-08-24.
  5. ^ Stewart (2006). "Tropical Storm Chris Discussion Seven". NHC. Retrieved 2006-08-24.
  6. ^ Pasch (2006). "Tropical Storm Chris Discussion Eight". NHC. Retrieved 2006-08-24.
  7. ^ Pasch (2006). "Tropical Storm Chris Discussion Nine". NHC. Retrieved 2006-08-24.
  8. ^ Avila (2006). "Tropical Storm Chris Discussion Eleven". NHC. Retrieved 2006-08-24.
  9. ^ Pasch (2006). "Tropical Storm Chris Discussion Twelve". NHC. Retrieved 2006-08-24.
  10. ^ Blake/Knabb (2006). "Tropical Storm Chris Discussion Fourteen". NHC. Retrieved 2006-08-24.
  11. ^ Brown/Beven (2006). "Tropical Depression Chris Discussion Sixteen". NHC. Retrieved 2006-08-24.
  12. ^ Mainelli/Bevin (2006). "August 5 Tropical Weather Outlook". NHC. Retrieved 2006-08-24.
  13. ^ Stewart (2006). "August 6 Tropical Weather Outlook". NHC. Retrieved 2006-08-24.
  14. ^ Franklin (2006). "Tropical Depression Three Public Advisory One". NHC. Retrieved 2006-08-24.
  15. ^ Stewart (2006). "Tropical Storm Chris Public Advisory Two". NHC. Retrieved 2006-08-24.
  16. ^ a b c AP (2006). "Tropical Storm Chris loses steam". Archived from the original on 2008-09-07. Retrieved 2008-09-07. {{cite news}}: Unknown parameter |deadurl= ignored (|url-status= suggested) (help)
  17. ^ a b FEMA (2006). "National Situation Update". Retrieved 2006-08-26.
  18. ^ Pasch (2006). "Tropical Storm Chris Public Advisory Four". NHC. Retrieved 2006-08-26.
  19. ^ Pasch (2006). "Tropical Storm Chris Public Advisory Eight". NHC. Retrieved 2006-08-26.
  20. ^ "Oil surges as Storm Chris heads toward Gulf of Mexico". Financial Express. 2006-08-01.
  21. ^ "Natural Gas Surges in New York on Hurricane Threat, Heat Wave". Bloomberg. 2006-08-02.
  22. ^ "New Orleans nervously eyes tropical storm Chris". New Zealand Herald. Reuters. 2006-08-03. Retrieved 2011-06-23.
  23. ^ "Report of the Annual meeting of the Directors of Meteorological Services" (PDF). Caribbean Meteorological Organization. 2006-12-04. Retrieved 2010-12-30.
  24. ^ Miranda Leitsinger (2006-08-04). "Tropical Storm Pushes Across Caribbean". Washington Post. Associated Press. Retrieved 2006-08-04.
  25. ^ Zee News (2006-08-06). "Tropical storm Chris wreaks havoc before downgrading". Retrieved 2006-08-25. [dead link‍]
  26. ^ DIRECCIÓN GENERAL DE AERONÁUTICA CIVIL - OFICINA NACIONAL DE METEOROLOGÍA. RESUMEN TEMPORADA CICLÓNICA 2006. Retrieved on 2007-01-29.
  27. ^ Espacinsular (2006). "Llueve torrencialmente y emiten alerta verde para 11 provincias por Chris" (in Spanish). Retrieved 2006-08-28.
  28. ^ Espancinsular (2006). ""Chris" se alejó de República Dominicana pero dejó agua, inundaciones y daños menores" (in Spanish). Retrieved 2006-08-28.
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