Dec 3, 2015 1:10 AM
NH1 Weather Insider with Joe Joyce: December 3, 2015
NH1 Chief Meteorologist
The rain is over and we can all look forward to a drier day outside Thursday. Low clouds will start the day with low pressure parked just off the coast. As the low pulls away, dry breezy WNW winds will pick up during the afternoon with gust 20-30 mph with highs in the Lwr-mid 40's. Skies will become partly sunny during the morning and afternoon.
Meanwhile, in the mountains it will be a different story all together. A cold front will be pushing south from Canada, this will provide lift in the atmosphere as cooler air from Canada will be cutting under the lighter warm air in place across New England. This front triggers the rising air, into an Upper level low which will be crossing right over our heads Thursday with a cool pool of air. The cooler air will be mixing down to the ground, so any moisture in the air which was once showers will be changing over to snow in the mountains Thursday morning. There could be some heavier bands of snow which form during the morning and early afternoon on the back side of this departing low. Gusty WNW upsloping over the mountains will provide an orographic lift and help to keep the natural snow falling in ski areas which can use as much natural snow as they can get as many ski areas are trying to open this weekend. Snowfall accumulations will range from 1-3", with up to 3-5" possible in higher elevations. I would not be surprised to see a few snow covered roads in the mountains and some slick travel in the foothills Thursday so travel with caution.
The cold front will push off the coast Thursday night with clearing and cooler temps following in behind. Snow showers will end across the north country. Friday starts off with sunshine, but a secondary vortmax (piece of upper level energy) will swing down from Canada a slide through New England Friday afternoon. This will likely come with a few more clouds in the afternoon. High pressure builds in for the weekend with moderating temperatures in the 40's nearing 50 Saturday and even into the 50's by Sunday with abundant sunshine. The high will hold strong enough for a dry and pleasant start to the week. We will have to watch the coastline and mid-Atlantic states for a developing Nor'easter by next Wednesday, whose impacts are yet determined. Temps will be too warm, so it will be just a bit of rain later Wednesday if anything.
Still no threat for any real snow in the long range. A very warm look pattern will be in place for much of the nation next week with temperatures running above the averages.