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Apr 13, 2016 11:56 PM

NH1 Weather Insider with Joe Joyce: April 14, 2016

NH1 Chief Meteorologist

NH1 Weather Insider with Joe Joyce: April 13, 2016 | NH1

High pressure will be sitting right over the Northeast for the end of the week. This high is providing beautiful dry pleasant spring weather with highs in the 50's during the afternoon. A perfectly seasonal airmass. As the high shifts farther north into Canada it will begin to wrap in a cooler NE wind at the surface. Winds off the 41 degree water can make the coast line be quite a bit cooler, than from the milder temperatures inland. That will be the case this week. Everyone will bask in the sunshine, but the beaches will struggle to warm with highs remaining in the 40's and Lwr 50's, while inland highs will be in the 50's to near 60. The warmest spots will be in the western valleys, eventually climbing into the Lwr 60's Friday & Saturday.

Overall, there is more blocking in the atmosphere than we have seen in awhile. Sometimes, if you are on the more unfavorable side of the block, inclement unsettled weather can last for days. If you are lucky enough to be on the good side of the block, it will mean days of sunshine. That is exactly where we are heading! A huge upper level ridge will be building over the northeast as we approach the weekend. This will provide more sunshine and temperatures will be climbing into the 60's and even a few Lwr 70's by Sunday!

Of course, with this pattern, back door cold fronts can be very typical and can quickly shut down the warmth with a simple wind shift to the Northeast. That may happen to start next week sometime. The timing of the backdoor front could change, but it does appear some of the warmth of the weekend may be in jeopardy heading into the start of next week.

There are questions in regard to how quickly a backdoor front pushes through on Marathon Monday. This will still take a a little time to determine, any wind shift to the NE will impact the forecast greatly. If the front stays north of us we will remain mild near 70. It looks like the dry milder air should hold for most of the day before the front pushes through. Behind this front we can expect breezy and cooler weather to remain in place into Tuesday into Wednesday with a mix of sun and building clouds and the risk of a few spot showers with a trough in place across the Northeast for the midweek. This cooler air aloft will help to destabilize the air with the heating of the day. Building clouds will have the chance to deposit a scattered afternoon showers both Tues and Wed.

The cooler air will be lifting out by the end of next week, a flattening of the flow will take over and much warmer air will begin to invade the nation. Temperatures will average above normal for most of the United States and warmer mild Pacific air will be able to cross the country. The end of April from the 21st through the 27 looks like will have plenty of warmth along with it. So the Spring is definitely here to stay this time!

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Concord, NH
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