Dec 4, 2014 8:28 PM
Clayton Stiver's 7-day NH1 Forecast for Friday, Dec. 5, 2014
Source: NH1 Chief Meteorologist - NH1.com
A somewhat chilly air mass for this time of the year filters in as high pressure crests overtop NH and moves to the Canadian Maritimes on Friday.
Another setup for some snow, sleet, freezing rain, and rain moves in Friday Night into Saturday Morning. The cold high pressure system across the Canadian Maritimes gives NH a northeast wind and cold air at the surface. At the same time, a warm front will lift north across the region late Friday into Saturday Morning. This brings in moisture but also warm air aloft which allows for the transition from snow to sleet to freezing rain. Eventually the warm air erodes the cold air at the surface as the winds shift to more of a southeasterly direction and this allows for a transition to plain rain Saturday Morning into the Afternoon. A cold front will then track through Saturday Evening to sweep the moisture out of the region.
High pressure will build in from the west Saturday Night into Sunday. This system will shift east of the area Monday. Low pressure will approach from the south and west Monday Night and Tuesday. Much uncertainty remains with the exact track and strength of this system but again, wintry weather will be possible. High pressure will build back in Wednesday and Thursday to make for fair skies but below normal temps. Stay tuned!
Friday: Increasing clouds, cold, highs 28-32. Friday Night: Cloudy with a chance of snow, mixing with and changing to sleet and freezing rain after midnight, lows 26-30. Saturday: Morning freezing rain, becoming all rain after 9am, cloudy with some fog, highs 36-40. Saturday Night: Rain early possibly ending as some snow, gradual clearing after midnight, breezy, lows 23-27. Sunday: Mostly sunny, cold, highs 29-33. Monday: Mostly sunny, cold, highs 27-31. Tuesday: Cloudy with a chance of rain and snow, highs 34-38. Wednesday: Mostly sunny, highs 31-35. Thursday: Mostly sunny, highs 33-37.