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Oct 19, 2015 9:37 PM

NH1 Weather Insider with Joe Joyce: October 20, 2015

NH1 Chief Meteorologist

Cold air is heavy, and always slow to budge. Warm air is light and always quick to rise. These principles will come into play as the boundary between the cool air and the mild air will be in place either near or right over us the next few days. More clouds around Tuesday along with a breezy SW wind. The clouds are part of a cold front which will take the entire day to push through the state. Breezy SW winds ahead of the front will push temps into the 50's and Lwr 60's. Clouds will be breaking during the midday and afternoon for some partial sun. Overall, a more comfortable day to be outside. As the cold front pushes through late in the afternoon, it could trigger a late day shower but I would not lose sleep over it.

The cold front will stall over Southern New England Tuesday night. High pressure builds in from Canada behind the front supplying cooler dry low level air at the surface. Warm air aloft will be over riding that cooler air to keep a deck of clouds around right through Wednesday. We will be on the cooler side of the front Wednesday with ESE winds as the high pulls off the coast. Temps will be cooler Wednesday in the mid 50's under overcast skies. As the stalled front slowly lifts back north as a warm front, it could trigger a late day shower.

The warm front will be right over us Thursday morning, the leading edge of the warmer air to our south and west. As low tracks along the Canadian border and lifts up into Canada, the warm front will lift north as well, opening the door for a milder airmass to surge into New England with highs back into the 60's. There will be plenty of clouds, with a few breaks of sun possible. By the end of the day, A cold front will be on the move with the risk of a passing shower or two.

High pressure will return with another shot of unseasonably cool air to end the week with sunshine Friday and highs near 50. The high will sit right over us Saturday with sunshine and temperatures moderating into the mid 50's. A weak front will approach Sunday with a few more clouds and highs nearing 60's. More cool dry Canadian air to follow to start off next week.

The main story here is the recent cold shot was so impressive because it was directed by our upper level winds right from the Arctic Circle! These next shots of cooler air will not be as deep or as impressive. Our weather will average to slightly above normal to slightly below normal right through the end of the month of October. Frequent fronts will prevent temps from getting too warm, yet a flatter flow to the jetstream will prevent temps from getting too cold with a more mild Pacific flow into the nation.


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