Weekend Warm Up...Before Cooler Times...
High Pressure south of New England is wrapping in a warming SW breeze this weekend. After a cooler Friday in the Mid 40's, Temps will start to warm to 50-55 degrees today..to the upper 50's and Lwr 60's by Sunday. Winds will pick up this afternoon with gust to 30 mph on the Cape. 12 out of the past 13 days have been above normal at Logan Airport. This weekend we will add on two more days before we transition to a cooler than normal week ahead.
High to mid level clouds will be drifting from west to east through the weekend to give a filtered appearance to the sun at times. SW winds will pick up again Sunday with gusts 30-35 mph for the Cape & islands. A cold front will push through Sunday night with just a few clouds. Behind the front, building high pressure will wrap in cooler NE winds on the backside of the front which will drop temps back down into the mid-upper 40's
Cold front will be stalled south of New England Monday, with high pressure parked over Northern New York. The high will supply the cold with temps falling back into the mid 40's with lighter NE winds. Overrunning clouds will ride along the stalled front and be directed into southern New England. Showers will skirt the south coast...though most of us will remain dry. There is a chance for a few showers Monday night
High pressure should remain over us into Tuesday for a cool fair weather day in the 40's...before clouds increase ahead of our main weather maker for the week. Unfortunately, it looks like some wet weather is heading to the east coast for one of the busiest travel days of the year...which will likely make for delays.
A low will be moving from the midwest to the Ohio Valley and strengthening by the time it arrives here. The exact track, strength, speed of the storm is not nailed down yet...but I think it is safe to say...most of us are going to be seeing rain with a low which will track right near the south coast of New England. This will drag in enough cold air to mix with snow or sleet in the higher elevations. Northern New England north of Concord NH have the best chance of seeing substantial snow accumulation of 3-6". As the storm pulls away, a change over to a brief burst of west snow will be possible...but very short lived.
The combination of the deepening low pulling away and building high pressure to our west will make for a blustery start Thanksgiving day with strong NE winds and even flurries or ocean effect snow on the Cape. Sunshine will be increasing by the afternoon. Temps will only be in the Lwr-mid 40's Thanksgiving...and climb back into the 50's for the weekend with more sunshine.
November will likely go out on a mild note...but there are signs of cold air beginning it's press from Canada into lower latitudes heading into December. Right on schedule. As pressure rise over Greenland, the flat mild flow from the Pacific will turn into more of a typical winter-like blocking pattern for the month of December where we should have our best chance of a sizeable snowstorm...not telling right now when that will be.
