Warmer weather is going to be common across much of the Eastern Region over the next few days, as a high pressure system continues to spread out across the Midwest and Great Lakes — destined to reach areas east of the Appalachians Friday.

This weather system, with some strong upper-level support, is going to effectively “bottle up” Isaac for the next couple of days.

While most temperatures are expected to peak in the middle-80s on Thursday, Friday will be hotter. Most temperatures Friday afternoon will either be the middle-90s, except at some of the beaches.

Cities like Minneapolis, Kansas City and Omaha were solidly in the 90s on Wednesday, and the source of Friday’s hot air along the East Coast will be coming “over the top” of Isaac’s center of circulation. So, while Louisiana and southern Mississippi continue to bear the brunt of the excessive rain and there are still some tropical storm force winds early Wednesday, “Isaac” is expected to get downgraded to a tropical depression later on.

The core of the rich, tropical moisture is going to spread northwestward into Arkansas, southeastern Missouri and western Tennessee over the next 24-36 hours. Some of these places will benefit from the much-needed rain, but there will be some other flooding problems occurring well inland from the Gulf Coast through Friday night.

As the Labor Day Weekend begins to unfold across the Northeast and in the mid-Atlantic states on Saturday, some very warm and more humid weather will prevail. There should be a decent amount of sunshine.

One of the forecast challenges we’ve been confronted with over the past day or two can be attributed to a back-door cool front that is going to try and push southward out of Canada Friday night and early Saturday.

Depending upon which global model you believe, afternoon temperatures on Saturday may be as few as two or as much as seven degrees lower than Friday. Most temperatures will be near 90 on Saturday with moderately high humidity.


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