2008 Super Tuesday tornado outbreak
|duration= parameter from the infobox header or from another 'History' box instead.Map of reported tornadoes (tornadoes in red) | |
| Meteorological history | |
|---|---|
| Duration | February 5–6, 2008 |
| Tornado outbreak | |
| Tornadoes | 87 (Record for a tornado outbreak in February) |
| Maximum rating | EF4 tornado |
| Duration | 15 hours, 20 minutes |
| Highest winds | Tornadic – 180 mph (290 km/h) (Pisgah-Flat Rock EF4 on February 6th) |
| Highest gusts | Non-tornadic– 82 mph (132 km/h) in Terre Haute, Indiana |
| Largest hail | 4.25 inches (10.8 cm) |
| Category 2 "Minor" winter storm | |
| Regional snowfall index: 4.55 (NOAA) | |
| Maximum snowfall or ice accretion | 21 in (53 cm) in southwestern Wisconsin |
| Overall effects | |
| Fatalities | 57 fatalities (+4 non-tornadic), |
| Injuries | 425 injuries |
| Damage | $1.2 billion (2008 USD) |
| Areas affected | Southern United States, Lower Ohio River Valley |
Part of the tornado outbreaks of 2008 and the 2007–08 North American winter | |
A deadly tornado outbreak affected the Southern United States and the lower Ohio Valley on February 5 and 6, 2008. The event, referred to as the Super Tuesday Tornado Outbreak by the National Weather Service (NWS), began on Super Tuesday, while 24 states in the United States were holding primary elections and caucuses to select the presidential candidates for the upcoming presidential election. Missouri, Illinois, Arkansas, Alabama, and Tennessee were among the affected regions in which primaries were being held. Some voting locations were forced to close early due to the approaching severe weather.
The outbreak generated 86 tornadoes between 21:00 UTC 5 February and 13:00 UTC 6 February. The storm system produced several destructive tornadoes in heavily populated areas, most notably in the Memphis metropolitan area, in Jackson, Tennessee, and the northeastern end of the Nashville metropolitan area.
A total of 57 people were killed across four states and 18 counties, with hundreds of others injured. The outbreak, at the time, was the deadliest in the era of modern NEXRAD doppler radar, which was fully implemented in 1997. The event was the second deadliest in February since 1950 behind the 1971 Mississippi Delta tornado outbreak, which killed 123, the deadliest outbreak in both Tennessee and Kentucky since the 1974 Super Outbreak, and was at the time the deadliest tornado outbreak in the US overall since the 1985 United States–Canada tornado outbreak which killed 76 people. This record would not be surpassed until the 2011 Super Outbreak which killed 324 people. Damage from tornadoes was estimated at over $500 million (2008 USD).
The weather system which produced the tornadoes caused significant straight-line wind damage, hail as large as softballs – 4.5 inches (11 cm) in diameter – major flooding, significant freezing rain, and heavy snow across many areas of eastern North America. The total damage from the entire weather system reached $1.2 billion.