Marine Weather and Tide Forecast for Winterport, ME

KEY MESSAGES
1) Snow this evening through tonight for the Bangor region and Downeast Maine will result in hazardous travel conditions.

2) Very cold wind chills possible Tuesday into Tuesday night.

3) Light snow Wednesday night into Thursday.

4) Artic air late week into the weekend brings much below normal level temperatures with dangerous wind chills.

DISCUSSION
KEY MESSAGE 1...
Snow this evening through tonight for the Bangor region and Downeast Maine will result in hazardous travel conditions.

KEY MESSAGE 1 DESCRIPTION...
Deterministic models show the track of the low pressure system shifting slightly south. However, the ensemble models and AI models have high probs towards more QPF in the south and a north wiggle to the track. In addition, the upper levels and mid level trof digs into the tropics, bringing warm, moist air into the system. With the next low pressure system to the west, light and cool N air will move in at the surface. High res upper air model soundings give more confidence to higher snow amounts on the coast.

KEY MESSAGE 2...
Very cold wind chills possible Tuesday into Tuesday night.

KEY MESSAGE 2 DESCRIPTION...
Temperatures will be at below normal levels Tuesday into Tuesday night. At the same time, the pressure gradient between low pressure near Labrador and building high pressure will support gusty southwest/west winds. Sub-zero wind chills are expected across northern areas Tuesday. Wind chills Downeast are expected to range through the single digits to around 10 above.
Winds will gradually diminish, with building high pressure, Tuesday night. Wind chills Tuesday night will be dependent on how rapidly winds diminish.

KEY MESSAGE 3...
Light snow Wednesday night into Thursday.

KEY MESSAGE 3 DESCRIPTION...
An intensifying clipper system will approach Wednesday night, then cross northern portions of the forecast area Thursday.
Snow will accompany this system. Snow totals are still uncertain. However, current indications only support light accumulations. Snow will taper to snow showers Thursday night.
The system will begin to draw much colder Arctic air across the region later Thursday night.

KEY MESSAGE 4...
Artic air late week into the weekend brings much below normal level temperatures with dangerous wind chills.

KEY MESSAGE 4 DESCRIPTION...
Arctic air will spill across the region Friday then persist through the weekend. Much below normal level temperatures are expected Friday through Sunday. High temperatures Friday will range from around 10 to 15 north, to around 20 to the lower 20s Downeast. Low temperatures Friday night will range from around 5 to around 10 below zero north, to around zero to 5 above Downeast. High temperatures Saturday will range from around zero to 5 above north, to the lower to mid teens Downeast. Low temperatures Saturday night will generally range from 10 to 15 below zero north, to around zero to 5 below Downeast. High temperatures Sunday will range from around zero north, to around 10 to 15 Downeast. However, wind chill values will be much lower. The pressure gradient between intensifying low pressure moving from the Gulf of Saint Lawrence to Labrador and strong Arctic high pressure to the west will support gusty winds Friday into Sunday. These winds, together with the very cold temperatures, will produce dangerous wind chills Friday into Sunday.

AVIATION /00Z MONDAY THROUGH FRIDAY/
Aroostook terminals. VFR conditions through Monday evening, possibly dropping briefly to MVFR cigs Monday night.

BGR VFR before dropping to MVFR In light snow after 03z. BHB will see MVFR vsbys in BR with potential MVFR snow between 01-03z this evening. IFR snow at BHB between 03-10z this morning with IFR snow at BGR between 05-09z this morning. Improvement to VFR before daybreak before diminishing toward MVFR and possible light snow after 18z Monday. Improvement to VFR Monday evening and overnight.

Light and variable winds tonight and Monday. Then SW winds 10-15 kts Monday night.

Tuesday...VFR/MVFR with a slight chance of snow showers north. VFR Downeast. Southwest/west winds 10 to 15 knots with gusts up to 20 to 25 knots.

Tuesday night through Wednesday...VFR. Southwest/west winds 10 to 15 knots with gusts up to 20 knots, diminishing to 5 to 10 knots Tuesday night. Southwest/south winds 10 to 15 knots Wednesday.

Wednesday night...VFR early. MVFR/IFR late with a chance of snow.
South/southeast winds 5 to 10 knots.

Thursday.. MVFR/IFR, occasional LIFR. Snow likely. South/southwest winds 10 to 15 knots.

Thursday night.. MVFR/IFR early. VFR/MVFR late. Snow tapering to snow showers. Southwest/west winds 10 to 15 knots with gusts up to 20 knots.

Friday...VFR/MVFR with a slight chance of snow showers. West winds 10 to 15 knots with gusts up to 20 to 25 knots.

MARINE
Small Craft Advisory for the outer waters through Monday morning, as seas are expected to remain generally 5 to 7 ft through this evening. Then as intensifying low pressure tracks to the south of Nova Scotia, gusts up to 25 kt are possible after midnight tonight. Small craft advisory conditions will likely persist into Monday. Visibilities will be reduced on the open waters tonight in snow and rain.

A Gale Watch has been issued for Monday night into Tuesday night. Small craft advisory conditions are expected Wednesday into Wednesday night. Small craft advisory conditions, along with occasional gale conditions, will occur across the waters Thursday into Sunday. Snow/rain expected across the waters Wednesday night into Thursday, with a chance of snow showers Thursday night. Light to moderate freezing spray Tuesday through early Wednesday. Freezing spray of varying intensities then expected Friday through the weekend with Arctic air crossing the waters.

CAR WATCHES/WARNINGS/ADVISORIES
ME...Winter Weather Advisory until 6 AM EST Monday for MEZ016-017- 029-030.
MARINE...Small Craft Advisory until 7 AM EST Monday for ANZ050-051.
Gale Watch from Monday evening through late Tuesday night for ANZ050-051.