Weather across America

(NATIONAL) Severe storms possible across the Texas Panhandle and southern Plains, well above normal temperatures for the northern Plains into the Upper Midwest, showers, thunderstorms, and locally heavy rain continue over the northeast Gulf Coast and Southeast. 

A forming cold front over the Pacific Northwest will be the impetus for scattered thunderstorms Sunday evening, as the Storm Prediction Center denotes a Slight Risk (level 2 of 5) for severe weather. This front will continue eastward on Monday and serve as a focus for additional showers and storms across Montana. In advance of the system, well above normal temperatures over eastern Montana on Sunday will slide eastward across the northern Plains Monday and into the Upper Midwest Tuesday. 

Widespread 80s are expected with some areas reaching 90F. A Canadian cold front will dip southward into Minnesota Tuesday afternoon and help trigger some showers and storms with cooler temperatures behind it. Temperatures over much of the rest of the Great Basin/Southwest and interior California will be near to above normal to start the work week.

Over and near the Texas Panhandle Monday, severe storms are possible with localized heavy rain and isolated flash flooding. With higher-than-average moisture values over the Rockies, scattered showers and storms will dot the landscape westward to Nevada especially during the afternoon. Much of the eastern half of the Lower 48 will see rather tranquil conditions during the next two days as a weak frontal system over the Great Lakes into the Northeast slowly dissipates. Temperatures will be near normal in the 70s to around 80F. However, over the Southeast and northeast Gulf Coast, a lingering frontal boundary will stall across northern Florida, acting to keep temperatures down just a bit due to an abundance of clouds and widespread showers with some thunderstorms. 

Rainfall chances will be highest along the GA/FL border into the FL Peninsula during the next few days. Given enough rainfall over the same areas, flash flooding is possible especially in more urban areas and where rainfall comes down the heaviest. Temperatures may only hold in the 70s to low 80s in this area.