Dec 22, 2015 1:09 AM
NH1 Weather Insider with Joe Joyce: Dec, 22 2015
NH1 Chief Meteorologist
Welcome to the first full day of winter! But looking at the weather, there is no sign of winter to come anytime soon! Get the umbrellas and rain coats heading out the door today as it looks like it is is going to be a wet one! A front is stalled over Northern New England today. It is the dividing line of two air masses, with cooler air trying to push south from Canada and warmer air form the south trying to push to Northeast. A slug of rain has been scooped up from the Gulf of Mexico bu upper level winds and in being steered into the Northeast today. There is a trough in the west, where the cooler air resides, and a developing ridge in the east, with a steady SW flow into New England. This SW flow is coming with clouds, milder air and periodic rain. The first batch of rain arrives today.
Rain will be quickly moving in during the morning hours. The heaviest rain is likely from late morning into the afternoon. Highs will be in the lwr-mid 40's, but warmer in Southern New England where highs will be climbing into the 50's. A widespread .50-.75" of rain will fall. Rain will be ending during the evening commute, with drier air arriving by evening with some partial clearing. Weak high pressure overhead Wednesday will make for a decent day with fading morning sun, and increasing afternoon clouds. Another disturbance will be directed into the Northeast by the SW winds aloft. Tempreatures will begin to climb inot the 50's Wednesday, but rain will be arriving around sunset. It will be a wet Wednesday night. Another .50-1" of rain will fall here so there will be a two day total of just over 1" of rain for many areas.
The rain Wednesday evening will be a warm front which marks the leading edge of the milder air which will surge into the Northeast Thursday, likely shattering December high temperature records for this date. The warm front will lift northward Thursday, mild SW winds will create a balmy feel for Christmas Eve day. It will feel downright tropical. There will be abundant cloud cover with the warm front laying just to our north. As risk of a PM shower in advance of an approaching cold front. The cold front will slide through Thursday evening. WNW wind will follow behind the front with building high pressure. This will set up an absolutely beautiful Christmas day! Mostly sunny skies with highs in the Lwr-mid 50's. Temperatures will begin to fall during the afternoon. High pressure will sit over us Saturday with more sunshine and temperatures still above the average in the 40's near 50. A weak low will pass through Saturday night with a few showers. Cooler drier air returns with building High pressure for Sunday and Monday. Highs should be somewhere near 40 by next Monday.