Dec 1, 2015 12:56 AM
NH1 Weather Insider with Joe Joyce: December 1, 2015
NH1 Chief Meteorologist
Tuesday is starting off cool and dry with even a little sunshine, but clouds are on the increase today. These clouds will likely trap in the low level cold and keep temperatures in the 30's and Lwr 40's for the afternoon. Skies will become mostly cloudy by midday with a few scattered light showers and sprinkles developing during the afternoon hours...especially after 3 PM.
High pressure off the coast is supplying the heavy low level cold across New England along with a light SE wind at the surface. Meanwhile. a strong upper low is in place across the Midwest, tracking up through the Great Lakes. A steady SW flow of winds aloft up the east coast ahead of this upper low is creating significant overruning and lift in the atmosphere. The lighter warmer air from the southern states is riding up and over the heavier colder air in the Northeast, creating abundant cloud cover along with pockets of rain. While showers will be mainly light during the afternoon, I expect some rain to fill in on Tuesday night as a warm front approaches from the south, the leading edge of the warmer air.
By Wednesday morning, there will be THREE lows on the map. The main low will still be sitting back towards the Great lakes. A second low will have developed along the warm front overnight along with a steady batch of rain which will be winding down. This low will be shifting from the Gulf of Maine into the Canadian Maritimes. The third low will be riding up and along a cold front which will be sliding int New Hampshire Wednesday Afternoon. This low will track right over us Wednesday bringing another period of steady rain Wednesday Morning into afternoon, along with slightly warmer temps still in the 40's. Rain could be heavy at times with a widespread inch or more of rainfall possible by the time it winds down late Wednesday night and early Thursday morning
The Low will track offshore early Thursday morning. Rain will be changing to snow in the Northern mountains. Upsloping accumulating snows will be possible all day for the north facing slopes. Gusty NW winds will follow in behind the departing low Thursday afternoon with partly sunny skies and highs in Lwr-mid 40's. Building high pressure with sunshine all weekend in the 40's. About as quiet as weather can be for early December.
The end of November marks the end of the Atlantic Hurricane Season. It was another quiet one...as expected. That now makes 10 years without a major landfalling hurricane striking the US. Incredible when you think about in this day of "Climate Change". Ever since the historic season of 2005, the tropics have been fairly tame all things considered. The last major storm to strike the US coastline was Category 3 Wilma October 24th, 2005. Even SuperStorm Sandy was a Category 1 as it made landfall.
There is no data showing storms becoming more severe or extreme. They just aren't. Weather is simply being recorded more and better photographed. Think of the amount of extreme weather which happened before radar and satellites! We have no record of it! The history of weather on Earth is EXTREMELY incomplete and we are just starting to learn about it all. The sciences of Meteorology and Climatology are still in their infancy, yet we have come so far in such a short time. It's like images from Hubble Telescope..which opened our eyes to the possibilites of the Universe, yet there is still so much to learn.