Will keep chance probability of precipitation for stratiform precipitation down along the coast for Tue, though most of the GFS ensemble members keep system well to our south while Canadian members look to be an even split between surface low close to the Gulf of Maine and further to the south with little influence on the area. By this time GFS is well on its way toward Atlantic Canada.Īll that to say uncertainty remains high on potential system for early next week. The CMC crosses the benchmark and eventually travels into Nova Scotia Tuesday night. EC hugs the coast much tighter and essentially takes the scenic route through New England before heading into the Gulf of Maine on Wednesday. The lopressure systems closer to the eastern seaboard travel to the northeast and close to the benchmark. At the same time GFS (Global Forecast System) is well east of the Delmarva with the coastal low while 00z CMC keeps it closer to the VA Capes. 00z EC is much more amplified at H5 by 00z Tuesday with energy transferring to the coast and coastal low developing near the NY Bight. Although skies will be partly-mostly cloudy and winds out of the north very little cold air exists, meaning temps will average above normal for the weekend with little in the way of precipitation expected.īy 12z Monday med range guidance is in fair agreement with both the upper and surface patterns before they begin to go off the rails. Surface high and upper ridge will dominate the areas weather pattern on Saturday into Saturday night. This low will slide to our south with the only impact being an increase in clouds over southern areas. High pressure will begin to nose into the area on Fri afternoon as next lopressure system takes shape over the Great Lakes. Skies will remain mostly cloudy across the north into Friday morning with partial clearing Downeast. However precipitation amounts will be minimal at best. Thus precipitation will take the form of snow showers in the morning and mix with or chg to rain showers in the afternoon. Lawrence will keep temps modified to above normal values both on Thu and Fri. Marine air flowing in from the Gulf of St. These will be hard to time and have continued mention of isolated-scattered snow showers across the northern half of the area on Thu into Fri morning. Some spotty snow showers will be possible over the far north late tonight as another weak spoke of moisture circulates in from the north.īlocking pattern continues over the North Atlantic through the end of the week with s/wvs continually being flung back toward the CWA. Lows will generally by in the mid 20s over the region. Tonight will remain partly to mostly cloudy and unseasonably mild as we remain in a light northerly flow between the old low well to our east and high pressure pushing in from the west. A light northerly breeze will continue around the low well to our east. Steep lapse rates with some marginal instability up to 5K ft later today may allow a few light rain showers to Probability of Precipitation up over the area, mainly across the north, this afternoon. A few snow showers will be possible across our region early this morning with any snow showers pushing south during the course of the morning. However, forecast soundings are still indicating a lot of low level moisture remaining over the area so plenty of clouds will linger. This could bring some breaks in the overcast during the midday and afternoon. Forecast guidance is in good agreement showing a spoke of moisture circulating through the area early this morning which will bring a mostly cloudy morning, followed by some drier air aloft pushing down from the northeast this afternoon. Relatively mild air backing in from the Maritimes will bring an unseasonably mild day today with highs nearing 40 across the area. We will remain on the western edge of a the circulation around a large area of low pressure southeast of the Maritimes in the open Atlantic. Raised temps a bit early this morning too. Kept isolated to scattered rain showers over the area for later today. Updated forecast to include scattered rain showers early this morning. This has changed the spotty snow showers over to rain showers, mainly over the north. High pressure will be over the region Sunday into Monday.Ħ:20 AMWarmer air has backed in from the Maritimes raising temps to the mid to upper 30s across some northern areas. Low pressure tracking off the Mid-Atlantic coast on Saturday will pass well to our south. High pressure will be over the area Friday. A large area of low pressure over the Maritimes will continue to weaken and move away to the east today through Thursday as high pressure builds in from the west.
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