2007 Groundhog Day tornado outbreak

The 2007 Groundhog Day tornado outbreak[2] was a localized but devastating tornado event that took place in central Florida early on February 2, 2007. Early morning temperatures had risen well above average for the season; combined with increased moisture and a powerful jet stream, this created enough instability and wind shear for thunderstorms to rotate and spawn tornadoes. Due to the conditions, a long-tracked supercell formed and produced three tornadoes over one hour and seventeen minutes. The supercell resulted in a 70-mile (110-kilometer) trail of damage.

2007 Groundhog Day tornado outbreak
Tracks of the three tornadoes in Florida
TypeTornado outbreak
DurationFebruary 2, 2007
Tornadoes confirmed4
Max. rating1EF3 tornado
Duration of tornado outbreak24 hours, 50 minutes
Damage$218 million (2007 US$)[1]
Casualties21 fatalities; 76 injuries
Areas affectedCentral Florida
1Most severe tornado damage; see Enhanced Fujita scale
2Time from first tornado to last tornado

Twenty-one people were killed and 76 others were injured in the outbreak. The first tornado damaged 1,145 homes and destroyed 200 others in Sumter County before hitting the Lady Lake area where it killed eight people. A total of 180 homes were damaged and 101 homes were destroyed in Lake County.[3] The second tornado killed 13 people in the Lake Mack area and damaged or destroyed over 500 homes and other structures during its existence, including the 1500-foot (450-meter) tall transmission tower of WCFB FM.[4] The final tornado damaged roofs, car ports and garage doors along its path through New Smyrna Beach. The outbreak was the second-deadliest on record for Florida, with damages of $218 million.

Synopsis
Radar animation of the line of thunderstorms that produced the tornado

In east central Florida, a warm sector, a region of warm surface air between a cold front and a warm front,[5] 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.[2] For example, northwest of Orlando, temperatures were still at 75 °F (24 °C), which was about 3 degrees warmer than the average high for the day and 14 degrees warmer than the average low.[6] The conditions helped to form a long-tracked supercell thunderstorm that traveled from Sumter County to the coastal waters of Volusia County during the early morning hours of February 2, 2007, producing three tornadoes along its track.[2]

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).[7] At 3:10 am EST (0810 UTC), the first tornado touched down near The Villages and traveled at 55 miles per hour (89 km/h) into Lake County.[8] 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.[9] The tornado received an EF3 rating on the Enhanced Fujita Scale and had a track length of 16.5 miles (26.6 km).[2] 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 miles (8.0 km) north of Umatilla.[10]

The mesocyclone that produced the first tornado restrengthened and formed another tornado near Paisley at 3:37 am EST (0837 UTC) in Lake County.[2] A second tornado warning was issued at 3:52 am EST (0852 UTC) for Volusia County as the tornado was tracking toward the area.[11] It went east northeast toward the Lake Mack area, exceeding 50 miles per hour (80 km/h).[12] The tornado received an EF3 rating on the Enhanced Fujita Scale and traveled a total of 26 miles (42 km).[2] 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.[13] The supercell produced its last tornado east of Interstate 95 at 4:22 am EST (0922 UTC) and dissipated five minutes later at the Intracoastal Waterway, 3 miles (4.8 km) from where it touched down.[14] The tornado had a maximum width of 100 yards (91 m) around the time it reached peak intensity.[15] The tornado was rated EF1 on the Enhanced Fujita Scale and traveled for 3 miles (4.8 km).[2]

Confirmed tornadoes
Confirmed tornadoes by Enhanced Fujita rating
EFU EF0 EF1 EF2 EF3 EF4 EF5 Total
0 1 1 0 2 0 0 4

February 2 event
List of confirmed tornadoes - Friday, February 2, 2007
EF#
Location
County
State
Coord.
Time (UTC)
Path length
Damage
EF3 E of Wildwood to SE of Emeralda Sumter, Lake FL 28.88°N 82.05°W / 28.88; -82.05 (Wildwood (Feb. 2, EF3)) 08:10–? 16.2 miles (26.1 km) 8 deaths – Tornado began near Wildwood and moved across the south side of The Villages, where numerous frame homes were damaged or destroyed. The tornado then struck the neighboring town of Lady Lake, where numerous mobile homes were obliterated and Lady Lake Church was completely destroyed. Numerous trees were snapped and uprooted, and several greenhouses were destroyed further along the path before the tornado dissipated. 1,246 homes and mobile homes were damaged, and 301 others were destroyed. 25 additional people were injured.[16][17][18]
EF3 W of Paisley to E of DeLand Lake, Volusia FL 28.96°N 81.59°W / 28.96; -81.59 (Paisley (Feb. 2, EF3)) 08:37–? 26 miles (42 km) 13 deaths - Tornado touched down near Paisley, snapping numerous trees and toppling a radio tower before moving east and striking Lake Mack. Numerous mobile homes and RVs were obliterated at Lake Mack, and numerous trees were snapped and debarked, some of which had mobile home frames wrapped around them. The tornado continued east and tore through the south side of DeLand before dissipating. Numerous mobile homes, frame homes, and apartment buildings were damaged or destroyed in DeLand. 421 homes and mobile homes were damaged, and 192 others were destroyed. 51 additional people were injured.[18][19][20]
EF1 New Smyrna Beach Volusia FL 29.06°N 80.99°W / 29.06; -80.99 (New Smyrna Beach (Feb. 2, EF1)) 09:22–? 3.1 miles (5.0 km) Structural damage to many homes, mainly roof and chimney damage. Carports, garage doors, and pool screens were damaged as well.
EF0 N of Frostproof Polk FL 27.73°N 81.53°W / 27.73; -81.53 (Frostproof (Feb. 2, EF0)) 13:00–? 0.5 miles (0.80 km) A house suffered roof damage, two sheds were blown over, and several citrus trees were downed.
Source: SPC Storm Reports Reports for 02/02/07, NCDC Storm Events Database

Aftermath
A severely damaged home in DeLand, Florida

The outbreak was the second-deadliest on record for Florida, behind one that killed 42 people in February 1998.[6] Damages from the tornado outbreak totaled $218 million (2007 US$). Christopher Patton, spokesman for the Lake County emergency operations center, described the damage as "unlike even perhaps the hurricanes of 2004 when we had minor roof damage, screen damage, pool damage. This is way far more devastating."[21] The tornadoes were the first to be rated on the Enhanced Fujita Scale, which replaced the original Fujita Scale.[22]

U.S. President George W. Bush signed a declaration to designate Sumter, Lake, Volusia and Seminole counties as disaster areas.[23] A state of emergency was declared by Governor Charlie Crist for the same counties.[24] 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.[25] 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.[26] Katie Couric anchored the CBS Evening News from Lady Lake on February 2nd. The broadcast was slated to be from Miami, where Super Bowl XLI was held two days later as the game was to air on CBS. A moment of silence was held before Super Bowl XLI in Miami to honor the victims of the tornadoes.[27]

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See also

References
  1. "Storm Event database". National Climatic Data Center. Archived from the original on March 28, 2008. Retrieved July 10, 2009.
  2. "The Groundhog Day Tornado Outbreak". National Weather Service Melbourne Weather Forecast Office. Retrieved December 17, 2009.
  3. Bonanno, Chris (January 31, 2015). "Severe weather awareness week well-timed". Florida Today. Melbourne, Florida. pp. 3A, 8A. Retrieved February 2, 2015.
  4. "WCFB-FM 94.5 Tower Collapse". cflradio.net. Retrieved September 30, 2016.
  5. "NOAA's National Weather Service – Glossary". National Weather Service. Retrieved July 6, 2009.
  6. Forbes, Greg (February 3, 2007). "Deadly Florida Tornado Outbreak". The Weather Channel. Archived from the original on December 10, 2009. Retrieved July 11, 2009.
  7. "Tornado Warning". National Weather Service Melbourne Weather Forecast Office. February 2, 2007. Archived from the original on April 2, 2007. Retrieved July 6, 2009.
  8. "February 2, Weather Event #649925 (Tornado)". National Climatic Data Center. Retrieved July 5, 2009.
  9. "Severe Weather Statement". National Weather Service Melbourne Weather Forecast Office. February 2, 2007. Archived from the original on February 11, 2007. Retrieved July 7, 2009.
  10. "Severe Weather Statement". National Weather Service Melbourne Weather Forecast Office. February 2, 2007. Archived from the original on February 11, 2007. Retrieved July 7, 2009.
  11. "Tornado Warning". National Weather Service. February 2, 2007. Archived from the original on April 2, 2007. Retrieved July 7, 2009.
  12. "February 2, Weather Event #650106 (Tornado)". National Climatic Data Center. Archived from the original on July 23, 2009. Retrieved July 8, 2009.
  13. "Tornado Warning". National Weather Service Melbourne Weather Forecast Office. February 2, 2007. Archived from the original on April 2, 2007. Retrieved July 7, 2009.
  14. "February 2, Weather Event #650062 (Tornado)". National Climate Data Center. Retrieved July 6, 2009.
  15. "February 2, Weather Event #650062 (Tornado)". National Climatic Data Center. Retrieved July 8, 2009.
  16. https://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=17515
  17. https://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=18948
  18. "The Groundhog Day Tornado Outbreak" (PDF). National Weather Service Weather Forecast Office in Melbourne, Florida. National Oceanic Atmospheric Administration. February 17, 2007. Retrieved March 11, 2014.
  19. https://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=18950
  20. https://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=20318
  21. Reuters (February 2, 2007). "14 killed by tornadoes in central Florida". The Star. Archived from the original on June 4, 2011. Retrieved July 7, 2009.
  22. Associated Press (February 2, 2007). "Tornado to Be 1st Assessed by New Scale". The Washington Post. Retrieved July 11, 2009.
  23. "Disaster aid coming for tornado-ravaged central Florida". Canada: CBC. February 3, 2007. Retrieved July 10, 2009.
  24. Sepulvado, John (February 2, 2007). "Florida Death Toll Continues to Rise After Storms". National Public Radio. Retrieved July 8, 2009.
  25. Hackett, Alexandra (2007). "Volunteers descend on Central Florida". WTSP. Retrieved July 10, 2009.
  26. "People, Corporations Across Nation Pledge Help". WESH. February 5, 2007. Archived from the original on February 8, 2007. Retrieved July 10, 2009.
  27. Associated Press (February 4, 2007). "Victims of central Florida storms remembered before Super Bowl". ESPN. Retrieved July 10, 2009.
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