2007 Groundhog Day tornado outbreak

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2007 Groundhog Day tornado outbreak
A map displaying the path of the three tornadoes.
Tracks of the three tornadoes in Florida
TypeTornado outbreak
DurationFebruary 2, 2007
Tornadoes
confirmed		4
Max. rating1EF3 tornado
Duration of
tornado outbreak2		4 hours, 54 minutes
Fatalities21 fatalities; 76 injuries
Damage$218 million (2007 US$)[1]
Areas affectedCentral Florida

1Most severe tornado damage; see Enhanced Fujita scale
2Time from first tornado to last tornado

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.

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 1,500-foot (460-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 and caused an estimated $218 million in damage.

Synopsis

A long east–west line of various colors indicates the strength of the storm as it moves across the Floridian peninsula. Boxes indicate the warnings issued by the Nation Weather Service. A particularly violent section of the storm, the part which caused the tornadoes, is signified by deep red. It is followed across the state by NWS warnings.
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 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.[2]

At 3:06 am

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]

A radar image of the supercell that produced the EF3 Paisley–DeLand tornado at 3:49 am EST (08:49 UTC).

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 I-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.[14] 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[note 1]
EF# Location County / Parish State Start Coord. Time (UTC) Path length Max width Summary
EF3 E of Wildwood to E of Lady Lake Sumter, Lake FL 28°52′53″N 82°02′45″W / 28.8815°N 82.0457°W / 28.8815; -82.0457 (Wildwood (Feb. 2, EF3)) 08:10–08:25 16.17 mi (26.02 km) 450 yd (410 m) 8 deaths – The first tornado from the main supercell began near Wildwood and moved across the south side of
Enhanced Fujita Scale. The tornado caused $114 million in damage.[15]
EF3 SW of Paisley to E of DeLand Lake, Volusia FL 28°57′32″N 81°35′14″W / 28.9588°N 81.5871°W / 28.9588; -81.5871 (Paisley (Feb. 2, EF3)) 08:37–09:10 26.03 mi (41.89 km) 450 yd (410 m) 13 deaths – After the previous EF3 tornado had dissipated, the supercell produced a second EF3 tornado, the deadliest of the outbreak, at 3:37 a.m. EST (08:37 UTC). The high-end EF3 tornado first touched down southwest of Paisley, snapping numerous trees and toppling a radio tower before moving east and striking Lake Mack. Numerous mobile homes and RVs were obliterated, 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. In all, 421 homes and mobile homes were damaged, and 192 others were destroyed. A total of 51 people injured. Damage totaled $52 million.[16][17][18]
EF1 New Smyrna Beach Volusia FL 29°03′51″N 80°59′20″W / 29.0641°N 80.9890°W / 29.0641; -80.9890 (New Smyrna Beach (Feb. 2, EF1)) 09:22–09:27 3.1 mi (5.0 km) 100 yd (91 m) Many homes sustained structural damage, mainly to roofs and chimneys. Carports, garage doors, and pool screens were damaged as well.[17]
EF0 Frostproof Polk FL 27°44′N 81°32′W / 27.73°N 81.53°W / 27.73; -81.53 (Frostproof (Feb. 2, EF0)) 13:00–13:04 0.5 mi (0.80 km) 50 yd (46 m) A house sustained shingle loss, two sheds were blown over, and several citrus trees were downed.[19]

Aftermath

What was a brick two-story home has had its roof and parts of the second floor torn off. Debris and tree branches are strewn all over the surrounding lawn.
A severely damaged home in DeLand, Florida

The outbreak was the second-deadliest on record for Florida, behind one that killed 42 people in

Fujita Scale.[21]

U.S. President

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.[25] Katie Couric anchored the CBS Evening News from Lady Lake on February 2. 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.[26]

See also

Notes

  1. ^ All dates are based on the local time zone where the tornado touched down; however, all times are in Coordinated Universal Time for consistency.

References

  1. ^ "Storm Event database". National Climatic Data Center. Archived from the original on March 28, 2008. Retrieved July 10, 2009.
  2. ^ a b c d e f g National Weather Service in Melbourne, Florida. "The Groundhog Day Tornado Outbreak". National Oceanic and Atmospheric Administration. Archived from the original on March 4, 2016.
  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. ^ a b 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 #17515 (Tornado)". National Climatic Data Center. Retrieved April 23, 2023.
  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. ^ a b "February 2, Weather Event #19002 (Tornado)". National Climatic Data Center. Retrieved April 23, 2023.
  15. ^ "Florida Event Report: EF3 Tornado". National Centers for Environmental Information. 2007. Retrieved December 8, 2021."Florida Event Report: EF3 Tornado". National Centers for Environmental Information. 2007. Retrieved December 8, 2021.
  16. ^ "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.
  17. ^ a b "Florida Event Report: EF1 Tornado". National Centers for Environmental Information. 2007. Retrieved December 8, 2021.
  18. ^ "Florida Event Report: EF3 Tornado". National Centers for Environmental Information. 2007. Retrieved December 8, 2021."Florida Event Report: EF3 Tornado". National Centers for Environmental Information. 2007. Retrieved December 8, 2021.
  19. ^ "Florida Event Report: EF0 Tornado". National Centers for Environmental Information. 2007. Retrieved December 8, 2021.
  20. ^ "14 killed by tornadoes in central Florida". The Star. Reuters. February 2, 2007. Archived from the original on June 4, 2011. Retrieved July 7, 2009.
  21. ^ "Tornado to Be 1st Assessed by New Scale". The Washington Post. Associated Press. February 2, 2007. Retrieved July 11, 2009.
  22. ^ "Disaster aid coming for tornado-ravaged central Florida". Canada: CBC. February 3, 2007. Retrieved July 10, 2009.
  23. National Public Radio
    . Retrieved July 8, 2009.
  24. ^ Hackett, Alexandra (2007). "Volunteers descend on Central Florida". WTSP. Retrieved July 10, 2009.
  25. ^ "People, Corporations Across Nation Pledge Help". WESH. February 5, 2007. Archived from the original on February 8, 2007. Retrieved July 10, 2009.
  26. ^ "Victims of central Florida storms remembered before Super Bowl". ESPN. Associated Press. February 4, 2007. Retrieved July 10, 2009.

External links

Wikimedia Commons has media related to Images from FEMA, 2007 Central Florida tornadoes.
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