A multi-day barrage of tornadoes and dangerous thunderstorms that has been wreaking havoc in Arkansas and nearby states will shift into populated areas from Alabama and Mississippi to Tennessee and Kentucky Wednesday.
Large, long-track tornadoes (EF2 or stronger) will again be a major concern Wednesday afternoon into Wednesday night. If strong tornadoes like this hit any populated area they could result in complete destruction.
Many thunderstorms will also be capable of producing widespread wind damage in the absence of tornadoes, especially overnight. Hail larger than the size of golf balls could damage vehicles and roofs, while torrential rain causes flooding.
Areas from central Mississippi and central Alabama into much of Tennessee, Kentucky and parts of Indiana and Ohio will lie in the heart of the risk area Wednesday with the threat shifting farther east Wednesday night.
Cities such as Nashville and Knoxville, Tenn., Huntsville and Birmingham, Ala., Tupelo and Grenada, Miss., Louisville and Lexington, Ky., Evansville, Ind., and Cincinnati, Ohio are included in the highest threat zone.
People who live in mobile homes should start making arrangements to get to a safe shelter Wednesday in advance of this life-threatening outbreak. Mobile homes are not safe in tornadoes. Many deaths during the massive outbreak April 14-16, 2011 involved mobile homes.
All people in the path of these thunderstorms should pay close attention to their local weather conditions Wednesday and be ready to seek safe shelter immediately if a tornado or severe thunderstorm warning is issued. Get to the most interior room on the lowest level of a sturdy building.
Larger Area at Risk for Severe Thunderstorms Wednesday
Severe thunderstorms will also affect a broader area spanning from the coastline of southeastern Louisiana, Mississippi and the Florida panhandle to northern Ohio and southern New York state late Wednesday or Wednesday night.
Threat Shifts to Eastern Seaboard Thursday
By Thursday, severe thunderstorms will threaten the Eastern Seaboard from upstate New York and western New England to the eastern Carolinas and perhaps northern Florida. Damaging winds appear to be the main threat Thursday, though a few tornadoes could also form.
Rising temperatures and humidity across the mid-Atlantic will have it feeling like the end of June.
Slow-moving showers and storms will bring heavy rain and flooding potential.
Heavy rain returning to the northern Plains will generate a renewed flood threat for the Red River.
More than 20 tornadoes were reported by the National Weather Service with hundreds of hail and wind reports Sunday afternoon through Sunday night.
Several tornadoes touched down from Oklahoma to Iowa, including near Wichita, Kan., and Oklahoma City, on Sunday.
Severe storms may erupt from Oklahoma to Wisconsin on Monday as the storm system that spawned several tornadoes across the Plains on Saturday and Sunday shifts slowly to the east.
324 confirmed tornadoes so far in May.
Niagara, Ontario (1996)
During a showing of the movie "Twister" at a local drive-in, a real twister struck. There was some flying debris, but nobody was hurt.
NYC (Central Park) (1996)
96 degrees. There were no 90 degrees days in July 1996.