Apr 26, 2016 11:45 PM

NH1 Weather Insider with Joe Joyce: April 27, 2016

NH1 Chief Meteorologist

Believe it or not, but a blocking pattern in the the overall weather pattern continues to dominate the weather. Not just here, but the block is impacting so many across North America. Just ask those who reside in the Midwest who are just starting to see their thunderstorm/ tornado season coming to life. It is an interesting set up as a huge high over Greenland with an upper level ridge remains in place which forces a trough to remain anchored across the Northeast. This trough will continue to supply cooler air in from Canada into New England for the next several days, even though afternoon highs will gradually start to moderate.

The nights will be cool and the days will be sunny and milder as the late April Sun will warm the ground and the air around it. High pressure to our north will supply the dry, clean, stable Canadian air with highs climbing into the 50's during the afternoon. The night will see temps dropping into the 20's and Lwr 30's by dawn under the cool, calm conditions. The next few nights will have a chance of frost/freeze conditions so the growing season still has a bit to wait on. Usually, by mid May is the time where the planting can really get going.

A front is stalled south of New England, the boundary separating the cooler air over us, from the southern warmth of the southern and Mid-Atlantic states. Showers and strorms will continue to ride along this boundary. A wave will develop and start to push a bit closer towards New England later Thursday and Early Friday. Despite a few clouds, High pressure to our north will keep the sunshine in place for Friday and right into the weekend with slowly moderating temps into the Lwr 60's by Saturday and Sunday.

Another wave will track south of us Monday and Tuesday, and again the heavy dry Canadian should help to steer that low far enough away from us. A trough in the upper level wind pattern in the Northeast will remain quite persistent through at least May 10th, will help to prevent any big Spring Warm up in the near future, but any more days in the 30's with cold rain snow will be very usual...but in this colder pattern...we still can't completely rule out the potential for a few flakes into early May especially across the North country! 5 new inches of snow on Mount Washington!


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