Violent thunderstorms, capable of spawning tornadoes, will sweep eastward across the Deep South tonight through Tuesday evening.
This severe weather episode that AccuWeather.com Senior Meteorologist Jim Andrews warned about over the past weekend is now unfolding.
The first round of violent thunderstorms are threatening Louisiana and Mississippi tonight.
There has already been damage reported across parts of Louisiana. A tornado touched down around 3:13 PM local time near Atlanta, La., and destroyed 3 homes. The tornado produced a damage path 100 yards wide and knocked down numerous trees and power lines. Similar damage can be expected with the strongest thunderstorms through tonight.
It is not out of the question that the threat of locally severe thunderstorms continues into Tuesday night and approaches the southern Atlantic Seaboard.
The strongest thunderstorms into Tuesday will be capable of unleashing damaging wind gusts. Several tornadoes may touch down and cause greater destruction.
Residents should closely monitor local media outlets and seek shelter immediately if a storm-related warning is issued.
Motorists should also heed these warnings. Remember, a vehicle is one of the worst places to be during a tornado. Stretches of Interstates 10, 20, 55, 65 and 75 will lie in the path of the violent thunderstorms.
The presence of ample moisture from the Gulf of Mexico will allow many of the thunderstorms to unleash downpours. While the drought-stricken South is in need of heavy rain, localized flooding problems may ensue.
The flood danger will not be limited to the areas being threatened by severe weather. Torrential rainfall is set to invade parts of the Midwest, spine of the Appalachians and Northeast tonight into Wednesday.
The storm system triggering the upcoming severe weather and flooding rain also has a wintry side that will endanger motorists across the Upper Midwest.
The first part of this week will feel more like September than the middle of July, typically the hottest time of year, throughout the Midwest.
The hot weather seen across the Northwest over the weekend will carry over into the new week, continuing the risk of heat-related illness.
The Northeast and mid-Atlantic will be faced with severe thunderstorms and flooding downpours through at least Tuesday before the new week ends on a more refreshing note.
One person was killed and three were injured after a lightning strike at Colorado's Rocky Mountain National Park Saturday afternoon. This comes one day after another strike occurred in the park on Friday, leaving one woman dead and seven injured.
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Beachgoers were sent running by a sudden, violent hail storm in Siberia on Sunday.
Albuquerque, NM (1979)
105 degrees -- tied all-time record
Greensboro, NC (1979)
78 degrees -- all-time record high minimum.
Montreal, Quebec (1987)
Severe thunderstorms led to flash flooding and many accidents. Widespread damage; two people were killed. A power outage left dozens stranded in subways overnight.