As that front slowly moves through Friday, more showers and storms are possible, and this is where the rain may come down in buckets thanks to an increase in tropical moisture that gets pulled up the east coast and enhances those showers and storms, allowing for locally heavy rain.
So will the Fourth be a washout? It's possible at this point it will be for some. A channel of tropical moisture may hold downpours into the early evening hours along eastern Mass and over SE Mass through much of the night. Cape Cod winds may gust 30-40mph overnight as well, out of the northeast, then northwest. There will be a sharp cutoff from soaking rains to drier air, so it's still a possibility with an eastward adjustment in the front and Arthur, the heavy rains taper off for many by night, but at this point, it's an expect the worst, hope for the best situation.
Regardless of the Friday night forecast, it's still a very quick clear out Saturday morning with lower humidity moving in with a breezy northwest wind. We'll watch for higher surf and the risk of rip currents at the shore for the weekend thanks to Arthur. Especially the south and east facing beaches of the Cape and Islands. Keep this in mind if you're planning to hit the beach.
We'll keep you posted through the week. Stay cool!
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