Often in a La Niña year, the "Tornado Alley" shifts to the east, spanning the Gulf states, including Mississippi and Alabama, and the Ohio and Tennessee valleys. Above-normal tornadoes are anticipated again this year.
Warmer-than-normal Gulf of Mexico water is a key component to the active severe weather season anticipated in 2012. There will be a sufficient supply of warm and humid air to fuel supercell thunderstorms, the type of storms that spawn strong tornadoes, because of the warm Gulf water.
Water temperatures in the Gulf of Mexico are running above normal for this time of year.Following a near-record number of tornadoes in 2011, an active severe weather season with above-normal tornadoes is expected in 2012. It is highly unlikely that the exact same areas of the Deep South that were struck by tragic tornado outbreaks in 2011 will be hit as hard again this year. However, there could be some damaging thunderstorms and tornadoes in the Gulf states this season.
Aerial view of destruction from an EF-4 tornado that struck Tuscaloosa, Ala., on April 27, 2011.
The Deep South, including the Gulf States and eastern Texas, is expected to get hit by severe weather early in the season, mainly in March. By early April, the severe weather threat will retreat to the north, reaching the lower Ohio and mid-Mississippi valleys, according to Paul Pastelok, expert long-range meteorologist and leader of the AccuWeather.com Long-Range Forecasting Team.
"If I were in the South or Ohio Valley, I'd be extra prepared this year," Mike Smith, senior vice president of AccuWeather Enterprise Solutions cautioned.
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