Alert archive / Alaska / Wind Chill Advisories in 2021

Wind Chill Advisory 43, NWS Fairbanks, AK

November 24, 2021

NWS Fairbanks, AK issued this wind chill advisory at Nov 24, 2021, 2:57 AM AKST. It took effect at Nov 25, 2021, 12:00 AM AKST. It was in force for 37 hr.

The area

The counties it named.

The facts

Issued
Nov 24, 2021, 2:57 AM AKST (11:57 UTC)
In effect from
Nov 25, 2021, 12:00 AM AKST
Expired
Nov 26, 2021, 1:10 PM AKST
In force
37 hr
Issued by
NWS Fairbanks, AK

The text

As transmitted.

945 
WWAK41 PAFG 241157
WSWNSB

URGENT - WINTER WEATHER MESSAGE
National Weather Service Fairbanks AK
257 AM AKST Wed Nov 24 2021

AKZ206-250100-
/O.NEW.PAFG.WC.Y.0043.211125T0900Z-211126T2100Z/
Northeastern Brooks Range-
Including Anaktuvuk Pass, Atigun Pass, Galbraith Lake, Sagwon, 
and Franklin Bluffs
257 AM AKST Wed Nov 24 2021

...WIND CHILL ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO NOON
AKST FRIDAY...

* WHAT...Very cold wind chills to 50 below zero.

* WHERE...Northeastern Brooks Range at Anaktuvuk Pass.

* WHEN...Midnight Thursday to noon Friday.

* ADDITIONAL DETAILS...The cold wind chills will cause frostbite 
  in as little as 10 minutes to exposed skin. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Wind Chill Advisory means that cold air and sustained wind
speeds of 15 mph or more will create low wind chills. Frost bite
and hypothermia can occur if precautions are not taken.

$$
6 follow-up statements
150 
WWAK41 PAFG 242259
WSWNSB

URGENT - WINTER WEATHER MESSAGE
National Weather Service Fairbanks AK
159 PM AKST Wed Nov 24 2021

AKZ206-251600-
/O.EXT.PAFG.WC.Y.0043.211125T0900Z-211127T0000Z/
Northeastern Brooks Range-
Including Anaktuvuk Pass, Atigun Pass, Galbraith Lake, Sagwon, 
and Franklin Bluffs
159 PM AKST Wed Nov 24 2021

...WIND CHILL ADVISORY NOW IN EFFECT FROM MIDNIGHT TONIGHT TO
3 PM AKST FRIDAY...

* WHAT...Very cold wind chills to 50 below zero.

* WHERE...Northeastern Brooks Range at Anaktuvuk Pass.

* WHEN...Midnight Tonight to 3 PM Friday.

* ADDITIONAL DETAILS...The cold wind chills will cause frostbite 
  in as little as 10 minutes to exposed skin.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Wind Chill Advisory means that cold air and sustained wind
speeds of 15 mph or more will create low wind chills. Frost bite
and hypothermia can occur if precautions are not taken.

$$
313 
WWAK41 PAFG 251301
WSWNSB

URGENT - WINTER WEATHER MESSAGE
National Weather Service Fairbanks AK
401 AM AKST Thu Nov 25 2021

AKZ206-260100-
/O.CON.PAFG.WC.Y.0043.000000T0000Z-211127T0000Z/
Northeastern Brooks Range-
Including Anaktuvuk Pass, Atigun Pass, Galbraith Lake, Sagwon, 
and Franklin Bluffs
401 AM AKST Thu Nov 25 2021

...WIND CHILL ADVISORY REMAINS IN EFFECT UNTIL 3 PM AKST FRIDAY...

* WHAT...Very cold wind chills to 50 below zero.

* WHERE...Northeastern Brooks Range at Anaktuvuk Pass.

* WHEN...Midnight Tonight to 3 PM Friday.

* ADDITIONAL DETAILS...The cold wind chills will cause frostbite 
  in as little as 10 minutes to exposed skin.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Wind Chill Advisory means that cold air and sustained wind
speeds of 15 mph or more will create low wind chills. Frost bite
and hypothermia can occur if precautions are not taken.

$$
407 
WWAK41 PAFG 251445
WSWNSB

URGENT - WINTER WEATHER MESSAGE
National Weather Service Fairbanks AK
545 AM AKST Thu Nov 25 2021

AKZ206-260100-
/O.CON.PAFG.WC.Y.0043.000000T0000Z-211127T0000Z/
Northeastern Brooks Range-
Including Anaktuvuk Pass, Atigun Pass, Galbraith Lake, Sagwon, 
and Franklin Bluffs
545 AM AKST Thu Nov 25 2021

...WIND CHILL ADVISORY REMAINS IN EFFECT UNTIL 3 PM AKST FRIDAY...

* WHAT...Very cold wind chills to 50 below zero.

* WHERE...Northeastern Brooks Range at Anaktuvuk Pass.

* WHEN...Until 3 PM Friday.

* ADDITIONAL DETAILS...The cold wind chills will cause frostbite 
  in as little as 10 minutes to exposed skin.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Wind Chill Advisory means that cold air and sustained wind
speeds of 15 mph or more will create low wind chills. Frost bite
and hypothermia can occur if precautions are not taken.

$$
229 
WWAK41 PAFG 252348
WSWNSB

URGENT - WINTER WEATHER MESSAGE
National Weather Service Fairbanks AK
248 PM AKST Thu Nov 25 2021

AKZ206-261500-
/O.CON.PAFG.WC.Y.0043.000000T0000Z-211127T0000Z/
Northeastern Brooks Range-
Including Anaktuvuk Pass, Atigun Pass, Galbraith Lake, Sagwon, 
and Franklin Bluffs
248 PM AKST Thu Nov 25 2021

...WIND CHILL ADVISORY REMAINS IN EFFECT UNTIL 3 PM AKST FRIDAY...

* WHAT...Very cold wind chills to 50 below zero.

* WHERE...Northeastern Brooks Range at Anaktuvuk Pass.

* WHEN...Until 3 PM Friday.

* ADDITIONAL DETAILS...The cold wind chills will cause frostbite 
  in as little as 10 minutes to exposed skin.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Wind Chill Advisory means that cold air and sustained wind
speeds of 15 mph or more will create low wind chills. Frost bite
and hypothermia can occur if precautions are not taken.

$$
908 
WWAK41 PAFG 261326
WSWNSB

URGENT - WINTER WEATHER MESSAGE
National Weather Service Fairbanks AK
426 AM AKST Fri Nov 26 2021

AKZ206-270000-
/O.CON.PAFG.WC.Y.0043.000000T0000Z-211127T0000Z/
Northeastern Brooks Range-
Including Anaktuvuk Pass, Atigun Pass, Galbraith Lake, Sagwon, 
and Franklin Bluffs
426 AM AKST Fri Nov 26 2021

...WIND CHILL ADVISORY REMAINS IN EFFECT UNTIL 3 PM AKST THIS
AFTERNOON...

* WHAT...Very cold wind chills to 50 below zero.

* WHERE...Northeastern Brooks Range at Anaktuvuk Pass.

* WHEN...Until 3 PM Friday.

* ADDITIONAL DETAILS...The cold wind chills will cause frostbite 
  in as little as 10 minutes to exposed skin.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Wind Chill Advisory means that cold air and sustained wind
speeds of 15 mph or more will create low wind chills. Frost bite
and hypothermia can occur if precautions are not taken.

$$
808 
WWAK41 PAFG 262210
WSWNSB

URGENT - WINTER WEATHER MESSAGE
National Weather Service Fairbanks AK
110 PM AKST Fri Nov 26 2021

AKZ206-262315-
/O.CAN.PAFG.WC.Y.0043.000000T0000Z-211127T0000Z/
Northeastern Brooks Range-
Including Anaktuvuk Pass, Atigun Pass, Galbraith Lake, Sagwon, 
and Franklin Bluffs
110 PM AKST Fri Nov 26 2021

...WIND CHILL ADVISORY IS CANCELLED...

$$

What forecasters said that day

The local office's own words before this wind chill advisory 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 wind chill advisory went out at Nov 23, 1:11 PM AKST, 13 hours 46 minutes earlier.

Area forecast discussion, Nov 23, 1:11 PM AKST, 13 hours 46 minutes before
Northern Alaska Forecast Discussion
National Weather Service Fairbanks AK
111 PM AKST Tue Nov 23 2021

.SYNOPSIS...
Hold on to your hats, especially at higher elevations across the
Interior, primarily south of the Brooks Range, as gusty east to
northeasterly winds will persist over highway summits into
Thursday, producing areas of blowing snow and low wind chill
values. Elsewhere, persistent northerly winds will continue
through the Bering Strait south to St. Lawrence Island, creating
elevated surf to the north side of St Lawrence Island, along with
possible freezing spray accumulation on surfaces in Savoonga.
Temperatures will remain below normal as they will continue a
downward trend for the remainder of the week.

&&

.DISCUSSION...
Upper Levels and Analysis...
The current pattern across Northern Alaska consists of a deep
longwave trough at 500 hpa being anchored by a 506 decameter
(dam) low over Southwest Alaska. This feature will persist across
the region through the short term, this afternoon into Friday. A
weak shortwave will rotate and lift north across the Eastern
Alaska Range Wednesday morning, increasing chances of snow across
the Eastern Interior by Wednesday afternoon, primarily east of
Fairbanks. Another shortwave will swing north across the same
location, north to the Eastern Beaufort Sea Coast, keeping
chances of light snow through Thursday. The associated surface
features, with low pressure under the trough and to the east along
with high pressure over the North Slope, the pressure gradient
across the Interior will persist into Thursday, bringing low wind
chill values as a cold air mass remains over Northern Alaska.

Model Discussion...
The models are in general agreement on the evolution of features
on the synoptic scale through the short term. The temperatures
will be a challenge due to the cloud cover across Northern Alaska
and the affects that it will have. We made limited changes to the
inherited forecast for this afternoon's forecast package.

North Slope and Brooks Range...
Cold temperatures in the 20s to 30s below are still holding on
strong across the region, from Umiat east to the Dalton Highway,
and expect these temperatures to persist over the next several
days. Winds will become northeasterly tonight for coastal
communities along the Beaufort Sea, as a surface high builds over
the high Arctic and persists through Thursday. The next chances of
snow will not occur until Thursday across portions of the Eastern
Brooks Range and Beaufort Sea Coast, with generally less than an
inch of snow expected.

West Coast and Western Interior...
A persistent north flow along the West Coast is expected to cause
freezing spray issues along the northern shores of St. Lawrence
Island throughout the week. North to northeast flow will also
continue inland over the next several days. Snow remains likely
over St. Lawrence Island as the strong northerly flow will
initiate snow showers over the open water from the Bering Strait
south. Temperatures expected to remain well below normal over the
next several days, with a cooling trend going into the weekend.

Central and Eastern Interior...
Blue sky has made a triumphant return to Fairbanks this afternoon
as the clouds have eroded away. The light snow that has been
occuring across the region overnight is confined to areas
primarily north and east of Fairbanks this afternoon. Light snow
chances will linger into Wednesday morning. With a tight gradient
in place across the region, creating gusty east to northeast winds
across higher elevations, Wind Chill Advisories are in effect for
cold wind chills along highway summits into Wednesday morning.
The next chance for snow beyond tonight looks to be Wednesday
afternoon across the Eastern Interior, so higher chances of snow
will be confined to the Upper Tanana Valley and Fortymile Country.
Temperatures are expected to remain below normal with a cooling
trend going into the end of the week.

Coastal Hazard Potential Days 3 and 4...
No concerns at this time.

Extended Forecast for Days 4 through 7...
Beginning the extended period Friday afternoon, a long wave
trough will continue over Northern Alaska and remain through the
extended period with a slow progression to the southwest of the
anchoring low. This will keep the snow chances primarily across
the Eastern Interior and along the capes of Western Alaska, and
through the Bering Strait south to St. Lawrence Island.

&&

.AFG WATCHES/WARNINGS/ADVISORIES...

Wind Chill Advisory for AKZ220-AKZ221-AKZ222.

Heavy Freezing Spray Warning for PKZ210.

Small Craft Advisory for PKZ210.

Brisk Wind Advisory for PKZ200-PKZ220.

&&

RZ NOV 21

The office that day

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

IssuedProductOfficeCountiesLasted
Nov 24, 12:29 AM AKSTWinter Weather AdvisoryAFG52 hr
Nov 24, 2:32 PM AKSTBrisk Wind AdvisoryAFG7 days

Nearby

Wind Chill Advisories in Alaska, 2021Every wind chill advisory in 2021

Sources

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