A powerful cold front will produce widespread heavy rain and thunderstorms this afternoon.  A cool weather pattern returns the rest of the week.  Tropical conditions return by this weekend.

 

A strong cold front with waves of low pressure will move through the region with widespread heavy rainfall and embedded thunderstorms from 11 AM to 6 PM.  The thunderstorms will be capable of heavy downpours and frequent lightning.  Rainfall amounts of 0.50" to 1.50" can be expected.  Winds will veer from the southwest to the northwest at 5 to 15 mph.  Temperatures will rise into the lower to mid-60s for higher elevations, upper 60s to mid-70s for the rest of the interior, and mid-70s to lower 80s along the coast for highs.

 

High pressure will build into the region tonight through tomorrow with clear skies to scattered cloud cover.  Winds will veer from the northwest to northeast at 5 to 10 mph.  Temperatures tomorrow will range from the mid-40s to lower 50s over the interior and lower to mid-50s along the coast for lows and upper 60s to lower 70s over the interior and lower to mid-70s along the coast for highs.

 

High pressure will remain in control on Thursday and Friday but will be centered over the Gulf of Maine with scattered cloud cover.  Winds will be from the east at 5 to 15 mph.  Temperatures on Thursday will range from the lower to mid-50s over the interior and mid to upper 50s along the coast for lows and mid-70s to lower 80s for highs.  Temperatures on Friday will range from the mid to upper 50s for lows and lower to mid-70s along the coast and mid-70s to lower 80s away from the coast for highs.

 

High pressure will remain over the coastal waters while cold fronts approach and stall to the west which will produce a more tropical air mass with low clouds and fog in the morning hours and a mix of sun and clouds with isolated showers and thunderstorms in the afternoon hours from Saturday through Tuesday.  Higher humidity can be expected.  Temperatures through the period will range from the mid-60s to lower 70s for lows and mid-70s to lower 80s along the coast and mid to upper 80s away from the coast for highs.