Areas of showers and fog Wednesday; outlook through the weekend

It looks like fall

A frontal boundary has become stationary across the central highlands of the state. The result will be much different weather to the north of the front versus the south. For the north, cloudy and cool conditions with chance for showers and isolated thunderstorms are possible. For areas south of the front, sticky dew points and warmer temperatures.

With the uptick in dew points, coastal areas appear to deal with fog, especially Casco Bay eastward. Where it is stubborn, temperatures may not get out of the 60s.

NAM3 model forecast radar idea from 8 AM Wednesday to 8 AM Thursday

Showers and storms appear to stay confined in areas to the north of the front. A weak impulse to the south appears to stay out to sea. Scattered showers and perhaps a rumble continue for northern areas through Wednesday night and into Thursday.

Front moves out Thursday

It will take a piece of energy on top of the western ridge near Alaska to race south and east Wednesday to begin to tilt the scale aloft in order to move the frontal boundary out on Thursday. It will be a slow process.

​The concern I have with this will be for isolated strong to severe storms which could develop Thursday afternoon. I suspect they may be remote. Guidance above hints that eastern areas may have the best chance. This is subject to change as models have flip-flopped in the past day as a result of miscalculating the frontal position and and the temperature / dew point gradient. 

Showers clear out of the region early Friday once the front is finally kicked offshore. Drier and cooler conditions return to start the weekend.  

Weekend outlook: dry Saturday,
​showers possible Sunday

High pressure moves in Friday and settles over the region by Saturday morning. Temperatures will be within a degree or two on either side of normal. Sunday sees a cold front approaching from the northwest, which could bring scattered showers and breezy conditions. 

Paulette peeks in at the end of this GIF loop. The storm may affect Bermuda before getting picked up by the front that passes through the region Sunday, and steer it towards Newfoundland early next week.

Temperature outlook through Tuesday

Folks in the north country take note: frost chances possible Friday night into Saturday and Monday night into Tuesday!  

Travel safe in fog

​If fog reduces your visibility while driving, do not change lanes or pass other vehicles unless absolutely necessary. Be sure that you can stop within the distance that you can see. weather.gov/safety/fog

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​​​​► ► For the latest official forecasts, bulletins and advisories, please check in with the National Weather Service in Gray for western and southern areas, or Caribou for northern and eastern parts of Maine

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​- Mike