Mar 30, 2016 11:14 PM
NH1 Weather Insider with Joe Joyce: SPRING SURGE BEFORE WINTER STRIKES BACK!
NH1 Chief Meteorologist
NH1 Weather Insider with Joe Joyce: It's going to be really nice midweek in NH | NH1
Mild SW wind continue Thursday. A Spring surge of air which will all having salivating for the warm season ahead. Winds will quickly pick up during the morning and these milder breezy winds will push afternoon temperatures into the 60's to near 70 with partly sunny to mostly cloudy skies by afternoon. Winds could gust up to 30-35 mph, with higher gusts to 50 mph near the Cape & Islands. The upper level ridge will hold on long enough across the eastern sea board to keep most of Thursday mild and dry.
We will be watching a low form the midwestern states track up through the Great Lakes. This will push a cold front into New England Friday. Light Showers will develop Thursday night into the predawn hours of Friday. Periodic showers with some heavier rain will track ahead of the front with the potential for an embedded thunderstorm with some gusty winds.The Cold front should finally push off the coast by by Friday Night.
Even though Friday will be mild in the 60's, The break down of the unseasonal warmth begins with the rain, but the weekend is where the cooler air will be arriving. The weekend will start off dry in the 50's Saturday with a ix of sun and clouds, and the risk of an afternoon shower. The main weather story will feature an Arctic cold front, which will deliver an unseasonably cold air mass for early April right from the Arctic into New England. A Clipper low will track across the North country and rapidly deepen. It will push this Arctic cold front through and off the coast early Sunday morning. An intense band of snow showers or squalls will develop with this passing low in the Saturday night through early Sunday morning. There will be the potential for some accumulating snow we will have to watch. There will likely be some slick travel early Sunday in any band of snow, but any snow will quickly end with the passage of the front.
Breezy NW winds and cold air advection will help to keep temps in the 30's to near 40 degrees Sunday with a mix of sun and clouds, partial clearing. Another cold front pushes through late Sunday, and this is where temperatures will really drop off! Once the sun sets Sunday night, lows will drop into the teens overnight with some areas approaching record cold early Monday morning. I would hope no one here in New Hampshire has started any early gardening, since it is way too early for that...but if you have any potted plants...Sunday Night you will definitely want to bring them indoors. The cold will stick around through Monday with sunshine and unseasonally cool temperatures. Highs will remain in the 30's to near 40 when typically we should be closer to 50 for early April.
Watch out for round #2 of snow late Monday/Monday night! Another Clipper low will track farther south towards the mid-Atlantic states and off the coast coming with a period of light accumulating snow Monday night and early Tuesday morning. The intensity and amount of snow is too early to determine, but again this will be fairly quick moving to limit accumulations. This low will reinforce a NE wind and lock in the low level cold with temps remaining in the 30's to near 40 into Tuesday. Between these two snow events there will be the potential for a few inches of snow...no doubt about it. Grass will be become snow covered. Roads could get slick as the snow should be falling both times at the coldest part of the day during the overnight.
The trough that supplies the cold blast of air will begin to lift out next week. So it does not appear this blast of Arctic air will not have much staying power without much of a blocking pattern to hold that trough in place. Temperature fluctuations will continue in this early Spring season with another shot of cooler air coming sometime around April 9th...again...the cold is fleeting. In fact it may get cut off at the pass and never get in fully in here. Enjoy the warmth while it is outside, because it looks like winter still has something to say before it's gone for good!