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Dec 17, 2015 11:21 PM

NH1 Weather Insider with Joe Joyce: December 18, 2015

NH1 Chief Meteorologist

A cold front is off the coast and drier air is moving in today under a light NW breeze. Still, clouds remain along with areas of fog this morning, especially along eastern sections of the state close to the front. Clouds will hang tough today along the seacoast today as a wave of low pressure will ride up along the cold front but stay far enough off shore. This will spread a few more clouds in during the afternoon. Inland, skies will be brighter with partly sunny skies and high will be in the Lwr to mid 40's.

The cooler air we have been talking about will be arriving Friday night though Saturday. A deep upper level trough will allow one of the colder air masses we have seen this December to slide in for the weekend. Saturday will start off with some sunshine, but clouds will build as an upper level low passes over our heads. This upper level disturbance along with a cool pool aloft will help to allow mountain snow showers to develop Saturday which will likely continue into Saturday night. Minor accumulations of snow will be possible in the northern mountains. Scattered flurries will also be flying across many northern and central sections of New Hampshire Saturday afternoon and evening. Breezy, cool NW winds gusting to 30 will make high temps in the 30's feel in the 20's in the higher gusts.

High pressure to our south Sunday will bring more sunshine, and lighter winds for the second half of the weekend. Less of a blustery day all around. Ski resorts are chomping to get busy snow making and the temperatures this weekend will be plenty cold enough to get some good work done. The cold pool of air will be lifting out Monday with a warmer more mild SW flow developing. A low will track west and North of us Monday, but will likely spread clouds in for the afternoon with highs in the 40's. An upper level ridge will be developing and shifting east which will keep a mild SW flow direction for much of the coming week ahead.

We will have to watch a batch of rain coming out of the Gulf which will be directed into the northeast under this SW flow aloft. The rain will likely be arriving later Wednesday-night. The mild air will hold right into Christmas Eve Day with highs in the 50's. Even though the temps in the air look warm, clouds and periodic rain should prevent us from reaching record warmth. Still, temps in the Lwr-mid 50's near Christmas...It is a bittersweet. I know many who would prefer some snow. Christmas day may start mild, but a front will be pushing through, I expect cooler temperatures to arrive Christmas day, along with gusty, blustery winds from WNW. On a side note, It looks like this New Year's could be quite cool too, but let's not get ahead of ourselves here...


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