SKYWARN Self-Activation will monitor the coastal storm potential for late Monday night into Tuesday morning. Here’s an excerpt from the latest Forecasters’ Discussion regarding the storm:
A sunny day with seasonable temperatures is expected before low pressure over the Mid Atlantic rapidly intensifies as it moves into New England by Tuesday morning. This system will spread rain and mountain snow over the region along with strong easterly winds. Heavy rain and snow quickly tapers off Tuesday afternoon with blustery and cool conditions expected to continue through Wednesday before a warming trend sets in for the end of the week.
Precipitation will move into southwestern NH around midnight starting as rain. Temperatures will be cold enough for snow in the mountains and northern regions, extending into the foothills of western NH. As the low moves northeast, warm air will push north transitioning snow over to rain over the morning and early afternoon on Tuesday with most precipitation falling as rain by mid afternoon outside of the higher terrain. Snow will be wet and heavy with this system with accumulations of 1-3 inches in lower elevations and 6-10 inches in higher elevations. Along the rain/snow transition line, periods of mixed precipitation are possible with sleet being most likely as the warm air moves in.
In addition to the wintry mix, wind will also be a large impact with this system. Winds will start picking up early tomorrow morning, peaking in mid morning with gusts of 35-40 mph possible in coastal zones and northern Coos, Oxford, and Franklin counties in downsloping regions of the mountains. Gusts of 25-35 mph will also be possible along the coastal plain. Winds will be highest over the waters with gusts up to 60 mph possible.
WATCHES / WARNINGS:
HIGH WIND WATCH IN EFFECT FROM LATE TONIGHT THROUGH TUESDAY MORNING… East winds 25 to 35 mph with gusts up to 60 mph possible. WHERE…Coastal Waldo and Knox Counties. WHEN…From late tonight through Tuesday morning. IMPACTS…Damaging winds could blow down trees and power lines. Widespread power outages are possible. Travel could be difficult, especially for high profile vehicles.
GALE WARNING IN EFFECT FROM 2 AM TO 4 PM EDT TUESDAY… Southeast winds 20 to 30 kt with gusts up to 45 kt and seas 6 to 9 ft expected. WHERE…Casco Bay. WHEN…From 2 AM to 4 PM EDT Tuesday. IMPACTS…Strong winds will cause hazardous seas which could capsize or damage vessels and reduce visibility.
STORM WARNING IN EFFECT FROM 2 AM TO 4 PM EDT TUESDAY… Southeast winds 30 to 40 kt with gusts up to 55 kt and seas 10 to 15 ft expected. WHERE…Coastal Waters from Stonington, ME to Port Clyde, ME out 25 NM, Penobscot Bay, Coastal Waters from Port Clyde, ME to Cape Elizabeth, ME out 25 NM and Coastal Waters from Cape Elizabeth, ME to Merrimack River, MA out 25 NM. WHEN…From 2 AM to 4 PM EDT Tuesday. IMPACTS…Very strong winds will cause hazardous seas which could capsize or damage vessels and reduce visibility.
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