From the WABI-TV5 & CW Forecast Center:
An upper level trough and a strong arctic cold front will slip southeast into our region this morning. A storm will develop along the arctic front as it slips well offshore today but an inverted trough will form west of the developing storm and likely move ashore somewhere near Penobscot Bay. A very narrow band of heavy snow will develop right along the trough, with much lighter snow/snow showers falling elsewhere across the Pine Tree State. As of this morning’s data, it looks like the position of the trough has shifted just a bit further south and west which will concentrate the heaviest snow around the Midcoast and possibly into coastal Hancock county. As a result snowfall amounts have decreased as well. The heaviest snow will fall along the Midcoast with an average of 3″-7″ over Waldo, Knox and Lincoln counties with locally higher amounts along the immediate coast and outer island. 3″-7″ will also be possible over coastal Hancock County with locally higher amounts likely along the immediate coast and outer islands mainly west of MDI. Elsewhere around the state, most locales are going to see a range of a coating to 2″ maybe 3″ in lighter snow and snow showers.
Once the arctic front and storm system moves well off to our east a strong northwest breeze will usher an even colder airmass into New England for later tonight and Sunday. Temps statewide will likely fall below zero tonight and the strong wind will drive the wind chill values down to dangerous levels. Despite some partial sunshine Sunday high temperatures will likely hold near zero up north and only reach the single numbers to near 10 south and once again a strong wind will make it feel much colder. The core of the arctic air will likely slide off to our east by Monday and temps will begin to creep back up to more seasonable levels.
A storm will likely be developing later Sunday near the Gulf Coast which will then begin to track northeast from there Monday. Most of the computer models pull the storm north just up to the west of New England Tuesday night into Wednesday, which would cause the precipitation to change from snow and mix late Monday night and early Tuesday to rain from south to as Tuesday moves along. There is still a slight chance that the storm will track just east of New England which would hold more cold air over Maine and cause more of the precipitation to fall as snow and ice. The forecast for Saturday is a tricky one so please stay tuned to the latest forecast from the WABI-TV and the CW.
Today: Mostly cloudy and blustery, with occasional light snow and snow showers across most of Maine, steadier, heavier snow likely around the Midcoast. High temps in the teens to low 20s. North/northeast wind 5-15 MPH.
Tonight: Snow and snow showers ending, blustery and cold, with low temps between -15 and 0. Northwest 10-15 MPH with gusts 25-30 MPH possible.
Sunday: Partly sunny, blustery and bitterly cold, with high temps in the single numbers to very low teens.
Monday: Partly sunny then increasing clouds late and high temps in the mid teens to low 20s.
Tuesday: Snow and mix changing to rain, with high temps in the mid 30s to low 40s.
Wednesday: Rain and mix tapering off, with high temps in the mid 30s to low 40s.
WABI-TV5 & CW Meteorologist