Tornadoes of 2013
Graph of the 2013 United States tornado count
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|
| Timespan | January 6 – December 21, 2013 |
|---|---|
| Maximum rated tornado |
EF5 tornado
|
| Tornadoes in U.S. | 903 |
| Damage (U.S.) | $3.6 billion |
| Fatalities (U.S.) | 55 |
| Fatalities (worldwide) | 115 |
This page documents the tornadoes and tornado outbreaks of 2013. Strong and destructive tornadoes form most frequently in the United States, Bangladesh, and Eastern India, but they can occur almost anywhere under the right conditions. Tornadoes also appear regularly in neighboring southern Canada during the Northern Hemisphere's summer season, and somewhat regularly in Europe, Asia, and Australia.
There were at least 903 tornadoes confirmed in the United States in 2013. 115 fatalities have been confirmed worldwide in 2013: 55 in the United States, 31 in Bangladesh, 24 in China, three in Turkey and two in Brazil.
On April 1, Canada began utilizing the Enhanced Fujita scale to rate tornadoes with minor modifications to better suit the region's tornadoes.
Entering 2013, the Oceanic Niño Index (ONI) for the three-month period lasting from November 2012 to January 2013 based on sea surface temperature (SST) anomalies was -0.3, denoting cooler than normal SSTs in areas of the Pacific. Throughout early to mid-January in the United States, there was isolated tornado activity, centered primarily in the South. In late-January, an unusually strong upper-level trough combined with atmospheric instability produced a widespread tornado outbreak over the Southern United States. The strongest of these tornadoes was an EF3, the first intense tornado confirmed in the U.S. in 2013. In eastern Australia, the remnants of Tropical Cyclone Oswald produced significant flooding in conjunction with tornadoes in late January. A small outbreak on February 10 spawned an EF4 tornado that affected Hattiesburg, Mississippi.
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