By Todd Gutner WBZ-TV

Changes are on our doorstep this evening and you will really notice them tomorrow.  Air is being squeezed up the East Coast right now by a strong high pressure cell offshore and a strengthening area of low pressure to our west.  The air moving up the coast is warm and humid and will give us our first taste of muggy air this season.  The leading edge of that air is a warmfront and it’s draped through the Mid-Atlantic at present time with thick clouds, scattered showers and pockets of drizzle.  Freshening southerly winds will bring that air north tonight and will invade our South Coast overnight and continue to spread north during the early morning.  The result will be lower and thickening clouds along with areas of drizzle by morning especially in SE Mass.  Tomorrow, the wind, which will be quite gusty, will back just a tad to the SSW and this will allow for breaks of sun to burn through the clouds midday and early afternoon except over SE Mass and Cape Ann.  With a few intervals of hazy sun temps will shoot up into the lower 70s with 60s for those locked in the clouds.

The strong low pressure center will slide west and north of us but the trailing coldfront will be strong and will sweep through early Saturday morning.  Out ahead of it, a pre-frontal line of thunderstorms will develop in NY State where temps reach 80 degrees.  That line will march toward and into Southern New England tomorrow night…there won’t be as much energy in the atmosphere for them to be fierce so they should be weakening on their approach but several rumbles are likely.  Following the rumbles and weakening line of storms, a steady period of rain will work through very early Saturday morning with a few hours of wet weather.  Once the front clears the coast, the wind will swing back to the west and northwest and drier air and clearing will work in from west to east and the sun will pop out for the afternoon.

NW winds will continue to blow all Saturday night and temps will be on the decline…in fact, some rural areas may get down to the freezing mark…which is a good reminder to not go crazy in the garden yet as it’s still a little early.  Sunday will be a brilliant day, just a bit crisp with highs in the middle 50s.


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