Mid-week warmup – mid 80s possible

In my last post I mentioned that there was some model disagreement regarding the 2nd half of next week. I mentioned that the GFS called for a return to cold and wet while the European model kept the cold air to the west and allowed a warm ridge to overspread the central United States. Today’s GFS now agrees with the warm ridge idea.

The weather from Saturday through Tuesday will be breezy and cool with a chance of showers/thunderstorms Sunday and Tuesday as short waves rotate through the base of the polar vortex. A new lobe of the polar vortex will deepen over the northern Rockies mid-week which will force a ridge over the central United States upstream of the polar vortex over New England. Heights will rise quickly over the Mid-South on Wednesday as warm-air advection finally starts to pump summer-like air into the region. Temperatures Thursday and Friday of next week could reach the middle 80s for the first time this spring.

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