Fourth Forecast: Clouds possible, but not a certainty

Summers most loved holiday is almost here — and most already have their American Flags and sparklers ready. The weather, however, may not be so eager to cooperate. We’ll start with the good news: Medium range forecast models which had been showing a total washout for Independence Day have since backed off. The bad news? It still looks like an onshore flow will promote the development of low clouds and the intrusion of a marine layer, at least early in the day.

What will become interesting is forecasting both the erosion of that marine layer by the afternoon and evening hours, and the potential for a weak coastal storm system to scoot on by to our south and east. This looks most likely to occur on the night of July 3rd (Friday) into Independence Day morning, as a low pressure system develops in the Ohio Valley and then transfer offshore to the Mid-Atlantic Coast. Sheesh — you’d almost think this were a mid-winter forecast!

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