Apr 2, 2016 9:49 PM
NH1 Weather Insider with meteorologist Bill Gile for April 3, 2015
As cold air is drawn southward Low pressure will track though southern New England Sunday morning and will rapidly strengthen as it does so. This will result in a short duration snow event (about 4-5 hours) for the southern half of NH. Light snow will develop in the pre-dawn hours and then become moderate to heavy snowfall bursts at times in southernmost NH between the hours of 6-8am. While initially the snow will be melting at first due to temperatures just above freezing and the ground being quite warm. However, as these heavier snow bursts develop that will drag the temps. down to and just below freezing which in turn starts the accumulation process. Most of the accumulations will be on grassy surfaces, but the heavier snow bursts will be enough to overcome the melting on the roads and so you'll need to be prepared for rapidly changing road conditions that may suddenly start becoming slick and snow covered! Also a High Wind Advisory will be in effect from 9am-8pm. Winds will continue to ramp up during the morning and with gusts reaching 40-50mph in the late morning combined with snowfall you may experience near whiteout conditions at times when driving! The snow will come to an abrupt end after 9am with clearing for the afternoon, but the winds will continue to howl and with temperatures in the lower 30s it will feel like its only in the teens and low 20s.
The winds will gradually relax overnight as skies remain partly cloudy. HOWEVER, watch out for round #2 of snow starting Monday morning, continuing throughout the day and winding down to snow showers for the late afternoon and evening. This one will be a longer duration event, on the order of about 12 hours, but it will be a light snowfall without any strong winds to deal with. While there will be additional snow accumulations of an inch or two, this time it should only be on the grassy surfaces as the roads will melt the light snowfall on impact with help from the daytime solar radiation as highs climb just above freezing in the south. Northern NH will be colder with highs only in the 20s.
Tuesday and Wednesday will both be a couple of quiet, but cold weather days with highs in the 30s and morning lows in the teens. The next storm threat comes in later Thursday with rain showers that turn to steadier rains Friday. The problem is that more cold air may be dropping southward again so norther NH could mix with snow late Friday before ending. WOW, THIS IS APRIL, RIGHT?