Winter Solstice Nor'easter Update One

988

FXUS61 KCAR 202354

AFDCAR

Area Forecast Discussion

National Weather Service Caribou ME

654 PM EST Fri Dec 20 2024

.SYNOPSIS...

Low pressure will intensify as it tracks northeast toward

Eastern Nova Scotia tonight into Saturday then north across

Labrador Saturday night. High pressure will build in from the

west on Sunday and slide south of the region Monday. A weak

clipper low will cross the area Tuesday. High pressure will

slowly build in from the northwest on Wednesday.

&&

.NEAR TERM /THROUGH SATURDAY/...

654 PM Update: Current radar mosaic imagery shows returns

across the entire forecast area at the moment, though with

plenty of low level dry air remaining in place as seen on

tonight`s 00z sounding, this snow will likely remain virga for

the next several hours before reaching the ground. Adjusted

temperatures down slightly with this update based on current

observations and trends.

Previous Discussion:

A strengthening coastal low pressure system will pass southeast

of the Gulf of Maine tonight and into the Canadian Maritimes on

Saturday. While the low will pass well southeast of the area, an

approaching trough from the west will interact with the low and

pull snow into the region. Models have trended westward with the

snow with this system, resulting in higher forecast totals

across the area. Snow will arrive along the Downeast Coast this

evening and overspread most of the region by midnight. Snow will

continue into Saturday.

A Winter Storm Warning has been issued for Coastal Washington

County. Based on forecast QPF and snow to liquid ratios of

15-20:1, expecting 4 to 9 inches of snow there. The highest

amounts will be east of Jonesport, and cannot rule out slightly

higher amounts there. A Winter Weather Advisory has been issued

for the remainder of Washington County and all of Hancock

County. Snow totals will be 3 to 6 inches in the Advisory area,

with 7 inch amounts possible near the New Brunswick border. To

the north and west, expect 1 to 4 inches, with the higher

amounts along and east of Interstate 95 and Route 1. Some high-

resolution models suggest that the higher snow amounts could

make it a bit further north and west, but not all guidance is on

board. Will continue to monitor and update as needed.

Snow will begin to taper off Saturday afternoon, but light snow

and snow showers will likely persist in spots into Saturday

evening. The snow will be light and fluffy. With wind gusts

approaching 35 mph on Saturday, patchy blowing snow will be

possible. High temperatures on Saturday will mostly be in the

20s, with some places in the North Woods remaining in the teens.

&&

.SHORT TERM /SATURDAY NIGHT THROUGH MONDAY/...

Low pressure tracking through the Maritimes continues to deepen

as the long wave 500mb trof remains over the area Saturday night

into Sunday. At the surface high pressure will build in from

Quebec by late day Sunday. Sunday AM will feature increasing

sunshine with temperatures starting out in the 0-5F range across

the north, upper single digits over the Central Highlands and

9-15F along the Downeast coast. The pressure gradient remains on

the stronger side Sat night into midday Sunday so NW winds

10-20mph with occasional gusts up to 30mph possible. Wind Chills

of -15 to -10F to start the morning across the north and cannot

rule out -20F readings around Moosehead and into N. Somerset.

Then looking at -10F to 0F across the Central Highlands to

Downeast coast.

During the day expecting highs to only top out in the 10-15F

range for the Central Highlands northward. Then 15-18F for

Bangor region to the Downeast coast. Winds still gusty 10-20mph

throughout the day which will cause some locations to experience

Wind Chills in the single digits to around zero but sunshine

expected. Cannot rule out some patchy blowing snow in spots

wherever winds are gusty enough.

&&

URGENT - WINTER WEATHER MESSAGE

National Weather Service Caribou ME

648 PM EST Fri Dec 20 2024

MEZ016-017-029-032-210800-

/O.CON.KCAR.WW.Y.0022.241221T0200Z-241221T1800Z/

Interior Hancock-Central Washington-Coastal Hancock-Northern

Washington-

Including the cities of Bucksport, Amherst, Orland, Eastbrook,

Grand Lake Stream, Wesley, Princeton, Aurora, Castine, Dedham,

Vanceboro, Danforth, Calais, Topsfield, Ellsworth, Bar Harbor,

and Great Pond

648 PM EST Fri Dec 20 2024

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 1 PM EST

SATURDAY...

* WHAT...Snow expected. Total snow accumulations between 3 and 6

  inches, isolated higher totals in far eastern Washington County.

  Winds gusting as high as 35 mph.

* WHERE...Coastal Hancock, Northern Washington, Central Washington,

  and Interior Hancock Counties.

* WHEN...Until 1 PM EST Saturday.

* IMPACTS...Plan on slippery road conditions.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory for snow means periods of snow will cause

primarily travel difficulties. Expect snow covered roads and limited

visibilities, and use caution while driving.

The latest road conditions for Maine can be obtained by going to

newengland511.org.

&&

$$

AStrauser

URGENT - WINTER WEATHER MESSAGE

National Weather Service Caribou ME

648 PM EST Fri Dec 20 2024

MEZ030-210800-

/O.CON.KCAR.WS.W.0008.241221T0200Z-241221T1800Z/

Coastal Washington-

Including the cities of Cherryfield, Eastport, Perry, and Machias

648 PM EST Fri Dec 20 2024

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 1 PM EST SATURDAY...

* WHAT...Snow expected. Total snow accumulations between 4 and 9

  inches, highest totals will be from Jonesport eastward to

  Passamaquoddy Bay. Winds gusting as high as 35 mph.

* WHERE...Coastal Washington County.

* WHEN...Until 1 PM EST Saturday.

* IMPACTS...Travel could be very difficult.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for snow means severe winter weather

conditions will make travel extremely dangerous. If you must travel,

keep an extra flashlight, food, and water in your vehicle in case of

an emergency.

The latest road conditions for Maine can be obtained by going to

newengland511.org.

&&

$$

Hazardous Weather Outlook

National Weather Service Gray ME

352 PM EST Fri Dec 20 2024

MEZ007>009-012>014-018>021-033-NHZ001>007-009-212100-

Northern Oxford-Northern Franklin-Central Somerset-Southern Oxford-

Southern Franklin-Southern Somerset-Interior York-

Central Interior Cumberland-Androscoggin-Kennebec-

Interior Cumberland Highlands-Northern Coos-Southern Coos-

Northern Grafton-Northern Carroll-Southern Grafton-Southern Carroll-

Sullivan-Belknap-

352 PM EST Fri Dec 20 2024

This Hazardous Weather Outlook is for Maine, south central Maine,

southwest Maine, west central Maine, western Maine, central New

Hampshire and northern New Hampshire.

.DAY ONE...This afternoon and tonight.

Hazardous weather cannot be expected at this time.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

Arctic air will enter the region this weekend. Wind chill values will

fall to 5 to 15 below with colder spots in the mountains by Saturday

night.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

$$

3:32 PM AST Friday 20 December 2024

Winter Storm Warning in effect for:

Kings County

Heavy snowfall with blowing snow is expected.

Total snowfall: 30 to 40 cm.

Locations: The Valley and and northern Nova Scotia.

Time span: This evening and persisting into Saturday evening.

Remarks: Gusty northeast then northwest winds accompanying the snow will cause reduced visibility at times in blowing snow.

Rapidly accumulating snow could make travel difficult over some locations.

Take extra care when walking or driving in affected areas.

Winter storm warnings are issued when multiple types of severe winter weather are expected to occur together.

Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to NSstorm@ec.gc.ca or tweet reports using #NSStorm.

3:32 PM AST Friday 20 December 2024

Winter Storm Warning in effect for:

Cumberland County North and Cobequid Pass

Heavy snowfall with blowing snow is expected.

Total snowfall: 30 to 40 cm.

Locations: The Valley and and northern Nova Scotia.

Time span: This evening and persisting into Saturday evening.

Remarks: Gusty northeast then northwest winds accompanying the snow will cause reduced visibility at times in blowing snow.

Rapidly accumulating snow could make travel difficult over some locations.

Take extra care when walking or driving in affected areas.

Winter storm warnings are issued when multiple types of severe winter weather are expected to occur together.

Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to NSstorm@ec.gc.ca or tweet reports using #NSStorm.

3:31 PM AST Friday 20 December 2024

Winter Storm Watch in effect for:

Inverness County - Mabou and north

Snow, blowing snow, and strong winds are expected.

Locations: Western Cape Breton.

Time span: Tonight through Saturday night.

Expected snowfall: 20 to 30 cm.

An approaching winter storm will spread snow over the region after midnight tonight. The snow will change to rain Saturday morning. 10 to 15 cm of snow is expected before the changeover to rain. There is a chance that freezing rain will develop over the highlands Saturday morning.  Gusty northeast winds tonight may give some blowing snow. The rain will change back to snow late Saturday afternoon as strong northwest winds develop and temperatures drop again. The snow will increase in intensity Saturday night as potential snowsqualls develop. 10 to 15 cm of snow is expected by Sunday morning. Blowing snow is a possibility Saturday night.

Visibility may be suddenly reduced at times in heavy snow.

Winter storm watches are issued when multiple types of severe winter weather are expected to occur together.

Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to NSstorm@ec.gc.ca or tweet reports using #NSStorm.

3:21 PM AST Friday 20 December 2024

Winter Storm Warning in effect for:

Moncton and Southeast New Brunswick

Hazardous winter conditions are expected.

Locations: eastern New Brunswick.

Total snowfall: 15 to 25 cm.

Maximum wind gusts: 70 km/h.

Time span: late tonight and persisting into Saturday evening.

Similar storms in the past have caused:

- hazardous driving conditions

- cancellation of scheduled activities

- scattered utility outages

Remarks: An area of low pressure is expected to travel up the eastern seaboard  and track south of Nova Scotia on Saturday, bringing snow to the province late tonight into Saturday. Strong winds will also lead to reduced visibilities in blowing snow on Saturday, especially along exposed areas of the coast.

Visibility may be suddenly reduced at times in heavy snow. Poor weather conditions may contribute to transportation delays.

Consider postponing non-essential travel until conditions improve.

Winter storm warnings are issued when multiple types of severe winter weather are expected to occur together.

Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to NBstorm@ec.gc.ca or tweet reports using #NBStorm.

3:19 PM AST Friday 20 December 2024

Winter Storm Warning in effect for:

Queens County P.E.I.

Heavy snowfall with blowing snow is expected.

Location: Prince Edward Island.

Total snowfall: 25 to 35 cm.

Maximum wind gusts: 80 km/h on Saturday.

Time span: Beginning near midnight tonight and continuing into Saturday evening.

Similar storms in the past have caused:

- hazardous driving conditions

- cancellation of scheduled activities

- disruptions to public services

- scattered utility outages

- delays or cancellations of ferry services

Visibility may be suddenly reduced at times in heavy snow. Poor weather conditions may contribute to transportation delays.

Consider postponing non-essential travel until conditions improve.

Winter storm warnings are issued when multiple types of severe winter weather are expected to occur together.

Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to PEstorm@ec.gc.ca or tweet reports using #PEStorm.