Apr 29, 2016 10:21 PM
NH1 Weather Insider with Joe Joyce: April 30, 2015
NH1 Chief Meteorologist
NH1 Weather Insider with Joe Joyce: April 30, 2016 | NH1
High pressure will be shifting off the coast and set up to the east northeast of New England this weekend. This will continue to wrap in a cool onshore wind direction promising to keep the beaches cooler through the weekend. The High will flex it's muscle Saturday helping to break up any clouds. Mostly sunny skies and warmer temperatures inland can be expected with highs near 60-65, Lwr-mid 50's at the coast before the seabreeze penetrates in the afternoon and cools temps down into the 40's. Saturday will be the pick of the weekend. We will still have to watch for mid level clouds backing in off the water during the afternoon, especially in southern New Hampshire. As April draws to a close, April 2016 will be the first colder than normal month we have seen since last June!
The upper Low in Canada which has helped to to supply the cooler dry air of the past few days is weakening and shifting east. This NW flow aloft helped to steer weather disturbances away from New England. With it's departure, the window is opening up for rain to enter the Northeast/ New England. Another wave of low pressure will track towards the Ohio Valley and Mid-Atlantic Sunday. High pressure off the coast will supply the low level chill. Showers and rain will be spreading into New Hampshire Sunday with highs only in the Lwr 50's and 40's at the coast. The rain will begin during the mid morning, and fill in to a steady rain for the midday through afternoon and early evening. It will be a damp raw day. A good day to do some productive spring cleaning.
The periodic rain and damp cool conditions will likely last through Monday with temperatures stuck in the 40's. A low will track along the south coast Monday with periodic rain and the potential for some localized heavier rainfall. It is possible that as this all winds down late Monday...we will have picked up close to 1" or more of rain, so this should be a good soaking rainfall.
Temperatures will start to warm back up into the lwr -mid 60's by the middle to end of next week, with another cool shot of air expected next weekend. A deep trough will become established across the eastern US for the midweek. There is the potential for another storm to gather and come up the coast for later in the week, but everything needs to phase together perfectly so we will watch that in the coming days. Depending on the amount of blocking in the pattern, the pattern could slow and allow a cutoff low to gather south of New England for the end of the week with a few scattered showers rotating back into New England with cooler than normal air in place. Not a great set up.
After that cool shot lifts out, unfortunately a persistent trough will remain in the northeast keeping any summer like warmth south of New England for now. Temps are looking seasonal to slightly below normal through at least the middle of May....still seasonal air this time of year is in the 60's with sunsets around 7:45 PM...Sounds fine by me!