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Apr 23, 2015 8:26 PM

NH1 Weather Insider with Joe Joyce: April 24, 2015

NH1 Chief Meteorologist - NH1.com

Not much change to forecast when it comes down to it, not much variation either. In fact, it is starting to feel a bit like the movie Groundhog Day! That is because we are in the middle of a blocking pattern. The weather has slowed down over our heads and we are trapped on the more unfavorable side of the block stuck in the cold and clouds. But in all reality, it is not all that bad! In fact, there will be some periods of sunshine to enjoy, especially in the morning when the energy from the Sun is not as strong.

It is a pretty simple weather story when it comes down to it. An upper low with it's cool pool of air will sit over us through the weekend. It will supply us with seasonally cool air. NW winds will upslope the mountains with rising air creating clouds with scattered rain or snow showers. NW winds will downslope from the mountains and warm and dry out the air providing mostly dry, brighter and slightly warmer conditions for Southern New Hampshire. Expect sunshine in the mornings, with clouds quickly building during the middays and afternoons. Each day will have the chance of a few pop up isolated showers. Friday will be a very similar day to Thursday with highs in the 40's and Lwr 50's. The weekend will see a slight moderation with highs climbing into mid 50's. Forget about the growing season here in NH. The next few nights will be cool with even some frost in the NW valleys. It is best to wait until after May 15 if you hope for any potted plants to survive the season. It can be a struggle for nurseries trying to get an early start to the season this time of year.

We will have to watch the beginning of next week closely. The upper low will actually track westward and back into New England because of this blocking pattern. Clouds will lower and thicken with winds shifting from the NW to the NE. This will reinforce the cool flow into the region with an increased risk of more widespread showers later Monday through early Tuesday. The upper low should finally pull away during the middle of next week and allow more ample sunshine and milder temperatures!


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