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Weather Brief Mar 13, 2018

Midcoast Forecast - March 13, 2018


A powerful nor'easter (the third this month) is pounding the Midcoast today with strong wind and heavy snow. A Winter Storm Warning is in effect for all of Maine for Tuesday and Wednesday and a Blizzard Warning for the Maine coast through Tuesday. Travel will be hazardous during this period especially for Tuesday with high snowfall rates and white out conditions.
An area of low pressure will move through the southern Gulf of Maine Tuesday as it continues to intensify. The storm will take a turn north on Wednesday just to the east of Maine passing over Nova Scotia then into the Canadian Maritimes. The center of the storm will backtrack west slightly toward northeast Maine Thursday morning before eventually exiting the region late Thursday. With the storm lingering across the region for such a long period, impacts from snow accumulation will be felt across the Midcoast for a larger period compared to last week's nor'easter. Temperatures will be slightly colder with this storm compared to last week's nor'easter which will make for a lighter and fluffier snow that should stick less to trees and power lines. This will reduce the threat of power outages with winds not expected to reach damaging speeds.
A Storm Warning is in effect for out mariners with northeast wind gusts of up to 55kts possible Tuesday with seas building up to 6 feet for Penobscot Bay and 18 feet offshore. Winds will turn out of the southwest on Wednesday and be weaker with gusts only up to 30kts.
Here is a breakdown of what to expect through the duration of this storm:


Tuesday afternoon

Moderate to heavy snow of 1" to 3" per hour through the afternoon and evening creating possible white out (or blizzard) conditions along the coast with northeast winds sustained between 20 and 30mph gusting up to 40mph. Snow accumulations of 5 to 10 inches likely during this period.

Tuesday night

Moderate snow will continue through the night with periods of lighter snow possible with an additional 4 to 8 inches likely. Winds will turn out of the north and eventually northwest through the night and decrease in speed, sustained between 10 and 20mph with gusts to 25mph.

Wednesday morning

Periods of light snow will continue through Wednesday morning with another coating to 4 inches possible as the storm stalls to the east. Winds will be lighter out of the west between 5 to 15mph.
Wednesday afternoon
Snow will become light and less organized through the afternoon with another trace to 1 inch possible. Winds will be light out of the west between 5 to 15mph.
Wednesday night
Snow will taper off with only a few isolated light flurries lingering mainly for interior sections of the state. Winds will be light out of the west between 5 to 10mph.
Colder air moves in for the weekend and early next week with ANOTHER nor'easter possible around Wednesday.
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