The severe weather threat Sunday puts nearly 100 million Americans at risk for violent storms, tornadoes, hail and strong gusts of wind, said CNN meteorologist Derek Van Dam.
"All are accompanying this eastbound system, New York, Washington DC and Atlanta are all in the area, the greatest risk near Ohio River Valley and S. Appalachia," he said. tweeted.
Tornadoes encrusted in storms represent a significant overnight risk because they are hard to see and people are less likely to receive warnings when they are asleep, said Van Dam.
A thunderstorm cell near Columbus Air Force Base, Mississippi, has a potential "debris ball" signature on the radar, indicating a significant tornado risk that can be detected by the radar, he said. declared.
Winds will be a major threat
The main line of storms will begin to sink into this area late Sunday morning and walk east in the afternoon. The center said it expects the threat of severe weather to increase throughout the day.
"Possibility of widespread heavy thunderstorms Sunday in much of the eastern US Strong winds are expected to be the main threat, but some tornadoes are also possible.The National Weather Service tweeted.
Tornado kills two children in Texas
Texas experienced Saturday the onset of dangerous and violent storms.
Two children, ages 3 and 8, were killed when a tree fell on their car as storms hit eastern Texas. They were at the back with their parents in front, said Angelina County Sheriff's Department Captain Alton Lenderman. The children were declared dead on the scene.
To the north, hail has reached the size of a tenth of a penny in the Dallas-Fort Worth area.
Risk of nocturnal tornado
Chad Myers, a meteorologist at CNN, said the hot air on Saturday afternoon had heightened the instability of the atmosphere, generating more energy for storms and facilitating their development. .
He said the threat of severe weather was the greatest at those times, but the risk remained even after falling warm temperatures.
"The storm is so intense that tornadoes are still possible after dark," said Myers.
The Mississippi Emergency Management Agency warned of a confirmed tornado around 10 pm. Local Saturday (23h ET).
"Central Alabama, do not let your guard down when you head to the bed.Three thunderstorms that caused damaging tornadoes in central SP will begin to move into our state in the next few hours." Turn on weather radios and applications telephone, "his Birmingham office said.
Sunday departure times are spent at the Masters
The storms are expected to move to the Augusta area during the afternoon and evening.
The threat of a tornado will be less important, but strong winds could still present dangerous conditions.