Wave On A Stalled Front…Keeps It Wet And Cool At The Coast
It must be noted we are seeing an absolute gorgeous day in VT, & ME today..Sunshine in the 60’s and lwr 70’s with dewpoints in the 40’s. The feel of fall in the air. Meanwhile, in SNE it is the other side of fall. Clouds are socked in with a cool NE winds keeping temps in the 60’s. The cold front which pushed through yesterday with all the humidity is now stalled off the coast. Showers are riding up the front and will be slowly lifting into SNE today. Dry air in the low levels so far has been eating away at the precipitation leaving us with scattered light showers and sprinkles, but I expect the showers to start to become more steady later today especially this evening.
An upper level trough digging into the eastern half of the nation is steering in a SW flow of warm humid air up the east coast. Meanwhile, high pressure in Canada is supplying the cool dry air with NNE winds at the surface. The warm humid air overriding the cool dry air is forming the clouds and rain along this boundary. We have to watch for an area of low pressure forming off the coast of North Carolina. This will become a stronger area of low pressure which will track up this stalled front and off the Cape tomorrow and then into the Gulf of Maine late in the day. This little mini-summer Nor’easter will bring gusty NE winds for the coast late today through Friday morning from the NE. Rain will start to become heavier during the evening hours with the potential for some heavier downpours Late Thursday night into Early Friday morning. The timing of how quickly this low pulls away is still a bit in question. Showers may linger at the coast Friday morning into the midday before finally tapering off as the low pulls away. Drier air will follow in on the back side with winds shifting to the west during the afternoon. Breaks of late day sun are possible. Rain will be heaviest for the Cape and Island and Maine for this event where rainfall could exceed 2″ in spots.
Saturday will be a great day as weak high pressure follows in behind the storm with sunshine, highs in the mid 80’s and a bit more humid. Humidity will continue to build on Sunday with warm southerly winds ahead of an approaching cold front which could trigger some late afternoon showers or thunderstorms with tropical downpours. This front will be slow to push through Monday with clouds and lingering AM showers. Drier less humid air will return with seasonal air in the Lwr-mid 80’s for Tuesday wand Wednesday with building high pressure. Keep a close eye on the radar for these upcoming showers and extra layer and umbrella handy for this twisting turning summer continues!