Alert archive / Alaska / Blizzard Warnings in 2020

Blizzard Warning 24, NWS Fairbanks, AK

December 16, 2020

NWS Fairbanks, AK issued this blizzard warning at Dec 16, 2020, 6:07 AM AKST. It was in force for 29 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Dec 16, 2020, 6:07 AM AKST (15:07 UTC)
Expired
Dec 17, 2020, 11:18 AM AKST
In force
29 hr
Issued by
NWS Fairbanks, AK

The text

As transmitted.

518 
WWAK41 PAFG 161507
WSWNSB

URGENT - WINTER WEATHER MESSAGE
National Weather Service Fairbanks AK
607 AM AKST Wed Dec 16 2020

AKZ204-161615-
/O.CAN.PAFG.WW.Y.0118.000000T0000Z-201217T0000Z/
Eastern Beaufort Sea Coast-
Including Kaktovik and Flaxman Island
607 AM AKST Wed Dec 16 2020

...WINTER WEATHER ADVISORY IS CANCELLED...

$$

AKZ201-170300-
/O.UPG.PAFG.WW.Y.0118.000000T0000Z-201217T0000Z/
/O.NEW.PAFG.BZ.W.0024.201216T1507Z-201217T0300Z/
Western Arctic Coast-
Including Wainwright, Atqasuk, Point Lay, and Cape Lisburne
607 AM AKST Wed Dec 16 2020

...BLIZZARD WARNING IN EFFECT UNTIL 6 PM AKST THIS EVENING...

* WHAT...Blizzard conditions occurring. Travel will be very 
  difficult to impossible.

* WHERE...Western Arctic Coast.

* WHEN...Until 6 PM today.

* ADDITIONAL DETAILS...Winds gusting as high as 45 mph will cause
  whiteout conditions in blowing snow. Significant drifting of the
  snow is likely. In addition, cold wind chills as low as 45 
  below zero will cause frostbite in as little as 10 minutes to 
  exposed skin.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Blizzard Warning means severe winter weather conditions are
expected or occurring. Blowing snow with strong winds and poor 
visibilities are likely. This will lead to whiteout conditions, 
making travel extremely difficult. 

$$

AKZ203-170000-
/O.CON.PAFG.WW.Y.0118.000000T0000Z-201217T0000Z/
Central Beaufort Sea Coast-
Including Nuiqsut, Prudhoe Bay, Alpine, Deadhorse, and Kuparuk
607 AM AKST Wed Dec 16 2020

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 3 PM AKST THIS
AFTERNOON...

* WHAT...Blowing snow with low visibility expected. Plan on
  difficult travel conditions. Winds gusting as high as 40 mph 
  will cause areas of blowing and drifting snow reducing 
  visibility to one half mile or less at times.

* WHERE...Central Beaufort Sea Coast.

* WHEN...9 PM today to 3 PM Wednesday.

* ADDITIONAL DETAILS...Winds gusting as high as 45 mph will cause
  areas of blowing and drifting snow. In addition, cold wind 
  chills as low as 45 below zero will cause frostbite in as little
  as 10 minutes to exposed skin.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory for blowing snow means periods of
blowing snow will cause travel difficulties. The latest road
conditions can be obtained by calling 5 1 1.

$$
4 follow-up statements
829 
WWAK41 PAFG 162213
WSWNSB

URGENT - WINTER WEATHER MESSAGE
National Weather Service Fairbanks AK
113 PM AKST Wed Dec 16 2020

AKZ203-162315-
/O.CAN.PAFG.WW.Y.0118.000000T0000Z-201217T0000Z/
Central Beaufort Sea Coast-
Including Nuiqsut, Prudhoe Bay, Alpine, Deadhorse, and Kuparuk
113 PM AKST Wed Dec 16 2020

...WINTER WEATHER ADVISORY IS CANCELLED...

$$

AKZ201-170900-
/O.EXT.PAFG.BZ.W.0024.000000T0000Z-201217T0900Z/
Western Arctic Coast-
Including Wainwright, Atqasuk, Point Lay, and Cape Lisburne
113 PM AKST Wed Dec 16 2020

...BLIZZARD WARNING NOW IN EFFECT UNTIL MIDNIGHT AKST TONIGHT...

* WHAT...Blizzard conditions occurring. Travel will be very
  difficult.

* WHERE...Western Arctic Coast.

* WHEN...Until midnight.

* ADDITIONAL DETAILS...Winds gusting as high as 45 mph will 
  cause whiteout conditions in blowing snow. Significant 
  drifting of the snow is likely. In addition, cold wind chills 
  as low as 45 below zero will cause frostbite in as little as 
  10 minutes to exposed skin.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Blizzard Warning means severe winter weather conditions are
expected or occurring. Falling and blowing snow with strong winds
and poor visibilities are likely. This will lead to whiteout
conditions, making travel extremely difficult.

$$
732 
WWAK41 PAFG 170600
WSWNSB

URGENT - WINTER WEATHER MESSAGE
National Weather Service Fairbanks AK
900 PM AKST Wed Dec 16 2020

AKZ201-171500-
/O.EXT.PAFG.BZ.W.0024.000000T0000Z-201217T2100Z/
Western Arctic Coast-
Including Wainwright, Atqasuk, Point Lay, and Cape Lisburne
900 PM AKST Wed Dec 16 2020

...BLIZZARD WARNING NOW IN EFFECT UNTIL NOON AKST THURSDAY...

* WHAT...Blizzard conditions occurring. Travel will be very 
  difficult.

* WHERE...Western Arctic Coast from Point Lay west.

* WHEN...Until noon Thursday.

* ADDITIONAL DETAILS...Winds gusting as high as 45 mph will 
  cause whiteout conditions in blowing snow. Significant 
  drifting of the snow is likely. In addition, cold wind chills 
  as low as 45 below zero will cause frostbite in as little as 
  10 minutes to exposed skin.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Blizzard Warning means severe winter weather conditions are
expected or occurring. Falling and blowing snow with strong winds
and poor visibilities are likely. This will lead to whiteout
conditions, making travel extremely difficult. The latest road
conditions can be obtained by calling 5 1 1.

$$
177 
WWAK41 PAFG 171256
WSWNSB

URGENT - WINTER WEATHER MESSAGE
National Weather Service Fairbanks AK
356 AM AKST Thu Dec 17 2020

AKZ201-172100-
/O.CON.PAFG.BZ.W.0024.000000T0000Z-201217T2100Z/
Western Arctic Coast-
Including Wainwright, Atqasuk, Point Lay, and Cape Lisburne
356 AM AKST Thu Dec 17 2020

...BLIZZARD WARNING REMAINS IN EFFECT UNTIL NOON AKST TODAY...

* WHAT...Blizzard conditions occurring. Travel will be very 
  difficult.

* WHERE...Western Arctic Coast from Point Lay west.

* WHEN...Until noon Thursday.

* ADDITIONAL DETAILS...Winds gusting as high as 45 mph will 
  cause whiteout conditions in blowing snow. Significant 
  drifting of the snow is likely. In addition, cold wind chills 
  as low as 45 below zero will cause frostbite in as little as 
  10 minutes to exposed skin.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Blizzard Warning means severe winter weather conditions are
expected or occurring. Falling and blowing snow with strong winds
and poor visibilities are likely. This will lead to whiteout
conditions, making travel extremely difficult. 

$$
529 
WWAK41 PAFG 172018
WSWNSB

URGENT - WINTER WEATHER MESSAGE
National Weather Service Fairbanks AK
1118 AM AKST Thu Dec 17 2020


AKZ201-181500-
/O.CAN.PAFG.BZ.W.0024.000000T0000Z-201217T2100Z/
/O.NEW.PAFG.WW.Y.0120.201217T2018Z-201219T0300Z/
Western Arctic Coast-
Including Wainwright, Atqasuk, Point Lay, and Cape Lisburne
1118 AM AKST Thu Dec 17 2020

...WINTER WEATHER ADVISORY IN EFFECT UNTIL 6 PM AKST FRIDAY...
...BLIZZARD WARNING IS CANCELLED...

* WHAT...Blowing snow and low wind chills occuring. Plan on areas
  of poor visibilities producing difficult travel conditions at
  times. Winds gusting as high as 50 mph will cause areas of 
  blowing and drifting snow. Strong winds combined with low 
  temperatures will produce wind chill values near 50 below.

* WHERE...Western Arctic Coast.

* WHEN...Until 6 PM Friday.

* ADDITIONAL DETAILS...Winds gusting as high as 50 mph will cause
  areas of blowing and drifting snow. Cold wind chills to near 50
  below will cause frostbite in a little as 10 minutes to exposed
  skin.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory for blowing snow means periods of
blowing snow will cause travel difficulties. The latest road
conditions can be obtained by calling 5 1 1.

$$

What forecasters said that day

The local office's own words before this blizzard warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Fairbanks, AK wrote its last area forecast discussion before this blizzard warning went out at Dec 15, 3:13 PM AKST, 14 hours 54 minutes earlier.

Area forecast discussion, Dec 15, 3:13 PM AKST, 14 hours 54 minutes before
Northern Alaska Forecast Discussion
National Weather Service Fairbanks AK
313 PM AKST Tue Dec 15 2020

.SYNOPSIS...
Light snow is falling over much of the Interior and West Coast as
moisture pushes north from a low moving across the Yukon Delta
and another weak low tracking east along the Northern Gulf of
Alaska Coast. Snow accumulations of 1 to 3 inches are expected,
primarily south and west of Fairbanks, with localized higher
amounts. Snow will come to an end Wednesday as both lows move out
of the area and weaken. Otherwise, winds will ease slightly today
over the Interior, with the exception of Northwest Alaska, along
the Chukchi Sea Coast, where blowing and drifting snow may
continue to be an issue. Winds will ramp up again over the
Interior tonight through Wednesday as a cold front rotates south
from a low in the Yukon. This will cause temperatures and wind
chill values to drop across much of Northern Alaska into the
weekend.

&&

.DISCUSSION...
At the surface, models are in good agreement through the short
term, today through Thursday, with the placement of major
features. A 1049 mb high sits north of Utqiagvik while a weak low
tracks through Southwest Alaska and another one across the
Northern Gulf of Alaska Coast. These lows will feed moisture
north into the Interior, increasing chances of light snow today
for much of the Interior south of a line from Northway to Kotzebue
and west to St. Lawerence Island. Snow chances will diminish
through Wednesday as both low weaken and move away from Northern
Alaska. Otherwise, a low retrograding southwest out of the
Canadian Archipelago to the Yukon will swing a cold front south
across the Brooks Range into the Interior, ushering in much colder
temperatures Wednesday into Thursday. In addition, this will
cause winds to pick up across much of Northern Alaska,
potentially creating low wind chill values for the remainder of
the week.

Aloft, at 500 mb, models initialize well with the main features
being a closed 547 decameter (dam) high north of Alaska near 80N
and weak trough across Southwest Alaska into the Northern Gulf of
Alaska. This trough will rotate north into the Interior, aiding
in the development of light snow today. Snow chances will end
Wednesday as the trough weakens and moves out of the area.
Attention quickly shifts to the east, as a 487 dam low over the
Canadian Archipelago retrogrades and extends trough south across
the Brooks Range into the Interior. This will usher in much colder
temperatures across Northern Alaska into the weekend.

North Slope and Brooks Range...
High pressure to the north and low pressure south, a tight
pressure gradient will remain in place across the Arctic Coast
through Thursday. Strong east to northeast winds and blowing snow
issues will continue to impact the Chukchi Sea Coast east along
the Beaufort Sea Coast. Temperatures and wind chill values will
be trending down for the remainder of the short term period.

West Coast and Western Interior...
A low moving through Southwest Alaska into the Bering Sea will
continue to spread light snow over much of the region today into
Wednesday before diminishing as the low weakens and moves over
the Bering Sea. Expect snow accumulations of 1 to 3 inches.
Otherwise, winds will ease slightly today with an increase on
Wednesday, the strongest winds occuring over higher terrain.
Temperatures will begin to cool Wednesday as a cold front sweeps
south across the Brooks Range, decreasing further into the weekend
with the coldest temperatures over the Western Interior.

Central and Eastern Interior...
Light snow has developed over much of the region, expect this to
linger into Wednesday and then come to an end by the evening as
cold arctic air begins to filter in from the Yukon. A chance of
snow in Fairbanks, with the majority of the snow and any
accumulations remaining primarily to the south. Expect snow
accumulations of 1 to 3 inches, highest amounts in the Alaska
Range. Otherwise, winds will ease slightly today and build back
in on Wednesday and Thursday. Increase in winds and a return of
much colder temperatures, wind chill values may dip to the 40s to
50s below for Thursday into the weekend.

Coastal Hazard Potential...
Long range model solutions have a large low moving into the
Bering Sea next week, Monday through Wednesday. There is some
uncertainty with this system, stay tuned to the forecast for
future updates.

Extended Forecast for Days 4 to 7...
Beginning the extended period on Friday, model concensus
continues to show a persistent high north of Utqiagvik that will
drift towards the North Pole with most of the active weather
staying south of Northern Alaska across the Bering Sea and Gulf
of Alaska. Attention shifts to an upper level low retrograding
slowly southwest from the Canadian Archipelago into the Northwest
Territories. As this happens, a surge of much colder air will
flow into Northern Alaska, with 850 mb temperatures on Friday
plummeting to -30C. This shot of cold temperatures looks to be
brief; by Monday, a large low will quickly move into the Bering
Sea causing a drastic warmup as winds aloft become southerly.

&&

.AFG WATCHES/WARNINGS/ADVISORIES...

Winter Weather Advisory for AKZ201-AKZ203-AKZ204-AKZ219.

Wind Chill Advisory for AKZ220-AKZ221.

Heavy Freezing Spray Warning for PKZ210-PKZ225.

Gale Warning for PKZ225-PKZ230-PKZ235-PKZ240.

Brisk Wind Advisory for PKZ200-PKZ215-PKZ220-PKZ245.

Small Craft Advisory for PKZ210.

&&

RZ DEC 20

In the hours before

Special weather statement, Dec 16, 5:22 AM AKST, 45 minutes before
Special Weather Statement
National Weather Service Fairbanks AK
522 AM AKST Wed Dec 16 2020

AKZ218>226-170445-
Southeastern Brooks Range-Upper Koyukuk Valley-
Yukon Flats and Surrounding Uplands-Central Interior-
Middle Tanana Valley-Deltana and Tanana Flats-
Upper Tanana Valley and the Fortymile Country-Denali-
Eastern Alaska Range-
Including Arctic Village, Wiseman, Coldfoot, Chandalar DOT Camp,
Iniakuk Lake, Allakaket, Hughes, Bettles, Caribou Mountain,
Gobblers Knob, Fort Yukon, Venetie, Central, Circle,
Stevens Village, Beaver, Chalkyitsik, Birch Creek,
Circle Hot Springs, Eagle Summit, Twelvemile Summit, Nenana,
Anderson, Tanana, Minto, Manley Hot Springs, Rampart,
Lake Minchumina, Livengood, Fairbanks, Fort Wainwright,
Eielson AFB, Ester, North Pole, Moose Creek, Two Rivers, Fox,
Chatanika, Chena Hot Springs, Sourdough Camp, Salcha,
Delta Junction, Fort Greely, Harding/Birch Lake, Dry Creek,
Dot Lake, Healy Lake, Tok, Tanacross, Eagle, Tetlin, Northway,
Alcan, Chicken, Boundary, Healy, Denali National Park,
Carlo Creek, Kantishna, Mentasta Lake, Black Rapids,
Donnelly Dome, Trims DOT Camp, Eagle Trail, and Mineral Lake
522 AM AKST Wed Dec 16 2020

...Cold Across Eastern Interior Alaska Thursday Through Sunday...

Temperatures will gradually fall into the teens and 20s below by
Thursday across the Eastern Interior of Alaska, with lows in the
20s and 30s below. Temperatures are expected to remain that cold
through Sunday.

East winds are expected to remain blustery over summits of the
Steese, Elliott and Dalton Highways, and over the Tanana Flats and
Minto Flats, with winds chills falling into the 40s and 50s below
in those areas by Thursday morning. Cold wind chills will
continue in those areas through Friday night.

Temperatures are expected to rebound on Tuesday next week.

The office that day

Everything else NWS Fairbanks, AK issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Dec 16, 3:31 AM AKSTGale WarningAFG35 hr
Dec 16, 2:32 PM AKSTBrisk Wind AdvisoryAFG48 hr
Dec 16, 2:32 PM AKSTHeavy Freezing Spray WarningAFG13 hr

Nearby

Blizzard Warnings in Alaska, 2020Every blizzard warning in 2020

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text.