Clusters and lines of showers and thunderstorms will be common from the southern Great Lakes to the East Coast today. As a high pressure area builds over northern New England this weekend, dry air will drift down the coast to bring an increase in sunshine from north to south.
From Illinois to the Gulf Coast, heat and humidity will be constant companions. Between the two differing air masses, a corridor of showers and thunderstorms will persist. Early next week, the New England high pressure area will merge with another high farther south. This will do two things: (1) minimize the chance of showers and thunderstorms from Maine to North Carolina and (2) support a warmup for the eastern Great Lakes and the whole Northeast. A cold front may cut the heat later in the week. This video has more.:
A storm in the tropical Atlantic is being observed for possible strengthening. This map shows the variety of models purporting to show where the center will go. Most solutions suggest it stays well offshore, but you will notice a few outliers suggesting more threat.
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Warmer air is advancing northeastward today and no return of the kind of cold the Northeast just had is in sight.
But that does not mean permanent warmth comes soon