Afternoon-Early Evening Rain & Storms
A strong cold front will be pushing through this afternoon through tonight bringing widespread showers with embedded downpours and thunderstorms.
A Severe Thunderstorm watch until 4PM for western New England who have the best chance for seeing locally strong storms and the potential for severe weather. Storms are racing from New Jersey into New England moving SW to NE at 40-60 mph. They are being directed by strong SW winds aloft ahead of the approaching cold front. Ahead of this front is a warm tropical airmass with dewpoints in the Lwr-mid 60's. This front will trigger downpours during the mid-late afternoon as they travel from Western New England 1-4 PM to Eastern New England 4-8 PM .
The storms will have a tendency to weaken as the move into the marine airmass in place across SNE being supplied by southerly winds off the Atlantic ocean. There is a cooler more stable airmass in place but plenty of moisture in the air will mean locally heavy downpours which could produce a quick inch of rain.
Wind Advisory is in place until 6 PM for Boston to the Cape & Islands. Ahead of the front, southerly winds will increase with sustained winds 25-35 mph with gust to 40-50. Some of the strong winds aloft may mix down to the ground in the late day downpours and storms to produce scattered wind/tree damage...especially in any gusts over 50. The best chance of this will be in Southeast MA between the hours of 3 PM- 8 PM.
While widespread severe weather is not likely, but embedded thunderstorms in downpours are possible. Thunderstorms have moved into the western New England. Again, an overall weakening with their movement east...but downpours and the potential for scattered wind damage in gusty winds will be the primary focus through the early evening as the storms/rain track through SNE and eventually off the coast by 9 PM.
The strong winds aloft and humid moist flow pushes off the coast tonight. A trough remains in place across the northeast for Friday. A breezy mix of sun and clouds to end the work week. A weak secondary front will push through tomorrow PM which will create some afternoon cloudiness and a chance of a brief PM shower to the N & W.
Oddly enough, an upper level low will push in from the Northeast from the Canadian Maritimes into this trough for Saturday. Hard to say how much of a spoiler it will be as high pressure builds in at the surface with plenty of sunshine...but a reinforced NW wind will keep temps in the 60's, seabreezes at the coast and diurnal afternoon cumulus should be expected with the cooler air aloft.
Upper level ridge builds in for Sunday with Sunny to Partly sunny skies and slightly warmer temps inland in the Lwr 70's. Sea breezes will still keep it cooler at the coast.
