Chilly temperatures for the next few days and into 2021, continued observation on January 1st/2nd system
Leftover precipitation from departing cold front
The GIF above runs from 7 PM Monday to 7 AM Tuesday and displays reflectivity by precipitation type. As a cold front departs, the atmosphere may squeeze out some last minute light snow/flurries in the northwestern areas of Maine, and light rain moving eastward in the eastern portions of the state. The rest of the week leading up to the New Year's Day system shows minimal to no precipitation, but mostly cloudy to overcast skies for most areas.
Cold temperatures from northwest winds bring Canadian cold air
The GIF above runs from 7 PM Monday to 7 AM Wednesday and shows temperature in degrees Fahrenheit. After the departure of the cold front, northwesterly winds bring cold temperatures from Canada and reside in the state for about a day and a half, since there isn't an oncoming nearby disturbance to change wind direction or air flow in general. The next system that is expected to impact Maine on New Year's Day will bring warmer temperatures in addition to mixed-type precipitation.
Upcoming January 1st/2nd system
The image above displays rain (upper left), freezing rain (upper right), and snow (lower left) total in inches. After two days, some things have changed in the long-range forecast for this upcoming system. First, precipitation is more widespread and not as concentrated. This gives an indication that this storm won't be as strong as previously thought. Second, the temperature gradient that balances around 32 degrees Fahrenheit is not as thin as it previously was either. More widespread snow and rain to the north and south respectively is expected, and less of a chance for freezing rain in the midsections of the state.
January 1st/2nd system temperatures
The GIF above runs from 7 AM Saturday, January 2nd to 7 PM Sunday, January 13th and displays temperature in degrees Fahrenheit. The beginning of the loop shows the potential temperatures during the time that the system is currently forecasted to move into the state. As this system moves through, the warm sector from the warm front of the system is expected to cross over the state, giving less confidence on what type of precipitation will occur and where it will occur. This new data suggests a pretty fair split of snow and rain on the north and south side of the state respectively. After this system moves through, colder temperatures are expected to move through, much like how these upcoming temperatures are decreasing from northwesterly winds bringing down cold Canadian air.
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