...Unsettled Weekend, No Washout...
A muggy start to this Friday with dewpoints in the 60's, despite a cold front which has pushed off the coast. Temps are quickly warming this morning into the 70's and will be approaching 80 for many inland areas by the afternoon...especially away from the coast. Temps at the coast will be warming into the midday into the Lwr-mid 70's before and afternoon sea breeze settles in with winds shifting to the NE. Temps will cool at the coast this afternoon into the 60's. Falling dewpoints this afternoon into the 50's will make for a very pleasant Friday plenty of hazy sunshine. A winds turn onshore, a sea breeze front may spark an afternoon shower or thunderstorm in the 495 belt as cooler air clashes into the warmer air inland.
High pressure over Hudson Bay in Canada will be sliding ESE towards the Canadian Maritimes overnight. This high is supplying the cooler drier air to us for the next 48 hours as clockwise motion of air around the high will keep winds in a cooler onshore flow for New England through Saturday. The stalled front will remain over the Mid-Atlantic states tonight into tomorrow morning. Any overrunning warmth over cool air could trigger the potential for a scattered showers inland after midnight tonight... This overrunning of the warmth over the colder maritime air will create considerable clouds Saturday. SE winds at the surface will keep temps in the mid 60's. The High offshore will provide just enough subsidence to help keep the showers west of new England and give us a mainly dry, but cool cloudy Saturday morning. By the afternoon showers will be advancing eastward...with the heaviest rain N & W. Boston south rmains dry. It is a nice Saturday for the Cape & Islands.
The stalled front south of New England turns into a warm front on the move Saturday night where scattered showers and maybe an embedded storm fill in . A low from the Plains will be tracking into upstate New York. Rain could be briefly heavy for a time. After early morning showers taper... Abundant cloud cover is likely Sunday. There are signs that once the warm front pushes through in the AM, SNE may push into the warm sector ahead of the cold front. Breaks of sun by late morning/ midday in the 70's possible, while northern new England remains cooler in the 60's. The Breaks of PM sun will destabilize the atmosphere, so once the cold front pushes through...a few afternoon thunderstorms are possible in the south by mid afternoon.
An upper level trough will rotate through Monday keeping a cyclonic flow, cool pool aloft. Clouds will rapidly build into abundant cloud cover in the unstable environment and may produce a shower or thunderstorm in the afternoon. Slightly cooler than Sunday.
An upper level ridge shifts east for the midweek with mostly sunny skies and warming temps back into the 70's then 80's with low-moderate humidity. A cold front on the move Thursday will likely trigger more showers and thunderstorms Thursday later in the day after spending the afternoon in the mid 80's
