Severe thunderstorms moved through the Central Plains and Upper Midwest Sunday with dozens of reports of large hail. Hail up to the size of tennis balls were received in Nebraska and Minnesota.
For this evening, the severe weather threat is mainly in the Southern Plains and Western Great Lakes. As of this writing, Severe Thunderstorm Watches include parts of eight states and additional watches are likely through the night.
Similar to Sunday, large hail is the biggest threat with thunderstorms tonight. The tornado threat is low, and confined mainly to Southern Texas and near Lake Michigan.
With a strong area of high pressure aloft in the Atlantic Ocean, the wind flow sweeping around the high is streaming in from the Gulf of Mexico. As the higher humidity builds ahead of the cold front, severe thunderstorm growth is likely, along with heavy rainfall.
Flash Flood Watches have been issued in Michigan and Texas for heavy rain. Totals of 2″ to 4″ may occur in the heaviest thunderstorms.
As the cold front pushes eastward tonight, severe storms will spread into the Ohio Valley southward to the Arklatex region. Severe weather will still be possible in the Great Lakes and Southern Plains this evening.
On Tuesday, the severe weather risk shifts into the Northeast but returns to the Southern Plains on Wednesday. A marginal risk has been posted by the Storm Prediction Center for both days.
For WeatherNation: Meteorologist Mace Michaels