2007 Groundhog Day tornado outbreak

Synopsis

In east central Florida, a warm sector, a region of warm surface air between a cold front and a warm front,{{cite web | access-date =July 6, 2009 }} was positioned ahead of a progressing cold front. Large scale lift was supported by a very strong jet stream aloft, with strong vertical shear evident, conducive for rotating thunderstorms and tornadoes. Instability increased overnight with temperatures and dew points increasing through the pre-dawn hours. For example, northwest of Orlando, temperatures were still at 75 °F, which was about 3 degrees warmer than the average high for the day and 14 degrees warmer than the average low. The conditions helped several thunderstorm cells to develop ahead of the cold front in a line, in the Gulf of Mexico. One of these thunderstorm cells matured into a supercell thunderstorm that remained intact, while other cells to its north failed to sustain themselves. The supercell had strong rotation visible on radar as it approached the western Florida Coast before it produced three tornadoes, two rated EF3 from Sumter County to the coastal waters of Volusia County during the early morning hours of February 2, 2007. After moving offshore, the main tornado-producing supercell quickly weakened and decayed into a bunch of showers, while another supercell produced an EF0 tornado four hours after the main supercell moved offshore.

At 3:06 am EST (0806 UTC), the National Weather Service (NWS) issued a tornado warning for northern Lake County until 4:00 am EST (0900 UTC). At 3:10 am EST (0810 UTC), the first tornado touched down near The Villages and traveled at 55 mph into Lake County. Five minutes after the tornado touched down, a severe weather update bulletin was issued by the NWS stating that there was a high likelihood of an extremely dangerous tornado and people in the path were in a life-threatening situation. The tornado received an EF3 rating on the Enhanced Fujita Scale and had a track length of 16.5 mi. Initially, the tornado was thought to have still been on the ground and a third bulletin was released at 3:34 am EST (0834 UTC). At this time, Doppler radar indicated that a tornado was forming or was on the ground roughly 5 mi north of Umatilla.

The mesocyclone that produced the first tornado restrengthened and formed another tornado near Paisley at 3:37 am EST (0837 UTC) in Lake County. A second tornado warning was issued at 3:52 am EST (0852 UTC) for Volusia County as the tornado was tracking toward the area. It went east northeast toward the Lake Mack area, exceeding 50 mph. The tornado received an EF3 rating on the Enhanced Fujita Scale and traveled a total of 26 mi. A third tornado warning was issued in Volusia County at 4:13 am EST (0913 UTC), nearly ten minutes before the third tornado touched down. The supercell produced its last tornado east of I-95 at 4:22 am EST (0922 UTC) and dissipated five minutes later at the Intracoastal Waterway, 3 mi from where it touched down. The tornado had a maximum width of 100 yd around the time it reached peak intensity. The tornado was rated EF1 on the Enhanced Fujita Scale and traveled for 3 mi.

Confirmed tornadoes

February 2 event

Aftermath

The outbreak was the second-deadliest on record for Florida, behind one that killed 42 people in February 1998.{{cite web |author-link = Gregory S. Forbes |access-date = July 11, 2009 |archive-url = https://web.archive.org/web/20091210070646/http://www.weather.com/blog/weather/8_11687.html |archive-date = December 10, 2009 |url-status = dead |access-date = July 7, 2009 |archive-url = https://web.archive.org/web/20110604024249/http://thestar.com.my/news/story.asp?file=%2F2007%2F2%2F2%2Fworldupdates%2F2007-02-02T205358Z_01_NOOTR_RTRJONC_0_-286166-2&sec=Worldupdates |archive-date = June 4, 2011 |url-status = dead | access-date =July 11, 2009}}

U.S. President George W. Bush signed a declaration to designate Sumter, Lake, Volusia and Seminole counties as disaster areas.{{cite web | access-date =July 10, 2009}} A state of emergency was declared by Governor Charlie Crist for the same counties.{{cite web | access-date =July 8, 2009}} More than 400 American Red Cross volunteers from across several states went to help in central Florida. The Tampa Bay chapter of the American Red Cross sent six volunteers with emergency response vehicles to the main area of damage.{{cite web | access-date =July 10, 2009}} The Walt Disney Company donated $50,000 to the American Red Cross to help aid victims and Feed The Children sent two truckloads of relief supplies to the central Florida area. The Salvation Army brought several mobile kitchens to offer relief to victims and Verizon Wireless helped by offering citizens the use of a wireless emergency communication center, in addition to cleaning and repairing cellular phones damaged by the storms.{{cite web |access-date = July 10, 2009 |archive-url = https://web.archive.org/web/20070208172436/http://www.wesh.com/news/10922016/detail.html |archive-date = February 8, 2007 |url-status = dead | access-date =July 10, 2009 }}

Notes

References

References

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