The southern High Plains, Mid-South and Northeast face a risk of flash flooding and strong-to-severe storms Friday as a cold front moves to regions, according to the National Weather Service.
The Mid-South and Northeast can expect wet conditions until the front leaves the East Coast by Saturday and reaches the Gulf Coast states, bringing storms there, the NWS forecasts.
The NWS said the central High Plains and portions of Tennessee were the regions with the highest risk of flash flooding, heavy rainfall, large hail and tornadoes.
Heavy rainfall watch in Pennsylvania
Southern Tier and West brace for more sweltering highs and lows
The lengthy and dangerous heat wave is forecast to stay until the end of the work week, according to the NWS.
The Desert Southwest and South Texas to Florida can expect more record breaking daytime highs and warm morning lows, the NWS reports. While daytime highs reach the triple digits in both the Desert Southwest and Southern Plains, the Gulf Coast and Mid-South should reach temperatures in the upper 90s along with oppressively high dew points and record breaking warm low temperatures through Friday.
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Florida is also forecasted for more heat caused by lighter winds and above normal sea surface temperatures due to a weaker than average Bermuda High, the NWS reports.
U.S. heat index map
Great Plains and Midwest to be treated to cooler air
A cold front will offer some comfort to the Great Plains and Midwest as the cooler and drier airs sweep the regions Friday, the NWS reports.
Parts of the Central Plains could see daytime highs 15-20 degrees lower than normal. The NWS forecasts the Northeast and Mid-Atlantic to have milder air by Saturday also seeing lower daytime highs, lower humidity levels and an overall more refreshing weekend.