textproduct: Caribou

This forecast discussion was created in the public domain by the National Weather Service. It can be found in its original form here.

WHAT HAS CHANGED

630 PM Update

- Updated aviation section based on 0Z TAFs

- Extended the Small Craft Advisory for the offshore waters

- No significant changes.

KEY MESSAGES

1) A strong cold front crosses the region Saturday afternoon into the evening. Snow and rain showers will occur in advance of the front. Snow showers, possible snow squalls, could occur with colder air in the wake of the front. Reduced visibilities and hazardous travel are possible.

2) Much below normal level temperatures Sunday and Monday. The coldest temperatures will occur Sunday night. Temperatures will begin to recover Tuesday into Wednesday.

DISCUSSION

KEY MESSAGE 1...A strong cold front crosses the region Saturday afternoon into the evening. Snow and rain showers will occur in advance of the front. Snow showers, possible snow squalls, could occur with colder air in the wake of the front. Reduced visibilities and hazardous travel are possible.

KEY MESSAGE 1 DESCRIPTION... An initial cold front will cross the region Saturday afternoon, with a secondary Arctic front later Saturday afternoon into the evening. Temperatures in advance of the initial front could be warm enough to support either snow or rain showers. Colder air will then surge across the region in the wake of the secondary Arctic cold front. This will allow precipitation to change to snow showers. Based on forecast soundings and snow squall parameters, isolated snow squalls are also possible with the Arctic front. Reduced visibilities and hazardous traveling conditions could accompany any snow showers or squalls. Wet road surfaces could also begin to rapidly freeze with the cold air.

KEY MESSAGE 2...Much below normal level temperatures Sunday and Monday. The coldest temperatures will occur Sunday night. Temperatures will begin to recover Tuesday into Wednesday.

KEY MESSAGE 2 DESCRIPTION... Arctic air will bring much below normal level temperatures to the region Sunday into Monday. High temperatures Sunday will range from the mid to upper teens north, to the mid to upper 20s Downeast. Low temperatures Sunday night will range from around 10 to 15 below zero north, to around zero to 5 above Downeast. High temperatures Monday will range from the lower to mid teens north, to around 20 to the lower 20 Downeast. Low temperatures Monday night will range from around 5 to 10 below zero north, to around 0 to 5 above Downeast. Temperatures will recover to slightly below normal levels Tuesday, reaching slightly above normal levels Wednesday.

AVIATION /00Z FRIDAY THROUGH TUESDAY/

VFR through Friday night all terminals. Only exception is low chance MVFR ceilings VCNTY KFVE 03z to 08z tonight but too low confidence to include in TAF. W wind 5 to 10 kt tonight through Friday morning, becoming S Friday afternoon and Friday night.

Saturday...Variable conditions with any snow/rain showers, possible snow squalls, mostly across northern areas. Otherwise, VFR/MVFR. South winds 10 to 15 knots with gust up to 20 to 25 knots, becoming south/southwest.

Saturday night...Variable conditions with any snow showers, possible snow squalls, early mostly north. Otherwise, VFR/MVFR. Southwest winds 10 to 15 knots, becoming northwest/north.

Sunday...VFR/MVFR with isolated to scattered snow showers. North/northwest winds 10 to 15 knots with gusts up to around 20 knots.

Sunday night...VFR/MVFR with isolated snow showers north. VFR Downeast. North/northwest winds 10 to 15 knots.

Monday through Monday night...VFR. Northwest/west winds 10 to 15 knots with gusts up to around 20 knots Monday. West/southwest winds 5 to 10 knots Monday night.

Tuesday...VFR/MVFR with isolated snow showers north. VFR Downeast. Southwest winds 10 to 15 knots with gusts up to around 20 knots.

MARINE

Have extended the SCA through this evening as seas are still hovering around 6 ft on the offshore waters. Winds and seas look to remain below small craft levels through the day on Friday. Winds could once again reach SCA levels Friday night. Light freezing spray develops over the waters on Friday morning.

Small craft advisory level conditions are expected Saturday into Sunday night. A slight chance of snow showers Saturday night, then a chance of snow showers Sunday. Moderate freezing spray Sunday night into Monday.

CAR WATCHES/WARNINGS/ADVISORIES

ME...None. MARINE...Small Craft Advisory until 1 AM EST Friday for ANZ050-051.

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