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Weather Brief Dec 14, 2018

Midcoast Forecast - December 14, 2018

Forecast Update:

 

A Winter Weather Advisory is in effect for Monday with a storm set to impact the region with snow and rain mix along the coast. An area of low pressure south of Long Island Sunday night will move through southern New England during the late night and east through the Gulf of Maine through Monday pushing moisture into the Midcoast where cold air is already in place.
Precipitation will start out as snow after midnight and continue through the early morning hours on Monday. Milder air will push in along the immediate coastline that will change over the snow to rain at times starting around sunrise, likely within the first 5 to 10 miles from the ocean's influence. The snow and rain mix will last through the morning and early afternoon before changing back to all snow as the storm begins to exit east and colder air moves in on the back side of the system. Meanwhile, inland section will likely see all snow with hardier snow totals (see snow total map). Snow showers will linger through the first half of Monday night before tapering off after midnight adding additional accumulation on top of the slush that will likely be in place at this point along the immediate coast.
Winds will be breezy out of the north during this storm but not strong enough to cause any damage or widespread power issues. The winds will build seas prompting a Gale Warning with 7 to 10 foot seas offshore and 2 to 4 foot seas for Penobscot Bay.
High pressure will build back in the wake of the storm bringing sunshine and colder air for the mid week.

 

 

Previous Forecast Discussion:

 

Temperatures continued to climb Friday reaching the low 40s despite increasingly cloudy skies as a week disturbance approached from the northwest. This will bring a low chance of light snow and rain to the state Friday night with most of the mositure likely drying out before reaching the coast. Clouds will linger on Saturday as a storm passes by offshore, meanwhile high pressure will sit over Maine, keeping rain offshore. Temperatures will continue to stay relatively mild with highs in the low 40s.

High pressure will gradually move out to the north and east on Sunday helping to clear out some of the cloud cover and taking temperatures back down to the the 30s for highs. Another low pressure system will slide through the Gulf of Maine on Monday that could bring some snow to the Midcoast with rain mix possible. The amount of cold air and the exact track will determine the amount of total snow and how much rain will mix in, but at least a trace to a couple inches looks likely at this point. Skies will clear and temperatures drop into the mid week with highs dipping to the 20s. We're watching another storm for the late week that could bring another mix of rain and snow.

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