Apr 5, 2016 11:27 PM

NH1 Weather Insider with Joe Joyce: April 6, 2016

NH1 Chief Meteorologist

NH1 Weather Insider with Joe Joyce: Sunshine returns to NH, cold remains | NH1

Another chilly start to the day with clear skies and calm conditions. Temperatures will start to moderate a bit by today with high pressure centered south of New England. Sunshine will fade to increasing afternoon clouds with a somewhat milder WSW wind. Clouds will be streaming into the Northeast in advance a batch of moisture which will be directed into the North east for Thursday. A deep trough will dig into the Great Lakes Thursday. This will direct a milder southerly flow up the east coast. As a low tracks west of New England, Showers will develop Thursday morning which will turn into a heavier rain, with downpours and an embedded thunderstorm Thursday afternoon. Gusty SSE winds will come with the rain with highs climbing back into the lwr-mid 50's. Heavy downpours will be possible the evening commute. The rain tapers to scattered showers Thursday night. There is the potential for up to 1" of rain and some street flooding in the heavy rain. The Low will begin to pull away by dawn on Friday. The trough will remain over the Northeast to end the week. Enough mild air will be left over from Thursday's push, will give way to a seasonal Friday in the Lwr 50's with more clouds than sun and the risk of a spot shower. Cooler air from Canada will be spilling into the trough this weekend. An upper low with it's cool pool of air aloft will track over us Saturday. Temps will fall back into the 40's with any sun giving way to building clouds and the risk for a few hit or miss scattered rain rain shower. A low will be gathering off the coast Saturday night. Some rain or snow showers will fall across Southern new England. A few may spread north. This low will deepen as it pulls away, it will direct colder gusty winds into New England. As the upper low shifts farther off the coast Sunday, it will continue to direct a cold NW flow from Canada into New England with highs only in the 30's to near 40 Sunday with mostly dry windy conditions. After a fairly tranquil weather pattern for most of the winter dominated by a Pacific flow thanks to the Super El nino, only now here in April do we finally move into a "Blocking pattern" which is more conducive for storm development. If we had this pattern in winter, we would be moving into a very snowy pattern. That will not be the case here in April. These blocking patterns only last a week or two usually, and even less in a Spring pattern. The cold wintry pattern will be breaking down after this weekend cold shot of air. Still we will have to watch for a few cooler shots of air, which will be brief, shallow and passing. The feel o winter will be on it's way out after one more cold shot this weekend. Could this April average slightly below normal which would be the first time we have had a month cooler than average since last June? It will be close!


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