Alert archive / Alaska / Winter Storm Warnings in 2021

Winter Storm Warning 1, NWS Anchorage, AK

January 17, 2021

NWS Anchorage, AK issued this winter storm warning at Jan 17, 2021, 5:07 AM AKST. It took effect at Jan 18, 2021, 5:00 AM AKST. It was in force for 25 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
Jan 17, 2021, 5:07 AM AKST (14:07 UTC)
In effect from
Jan 18, 2021, 5:00 AM AKST
Expired
Jan 19, 2021, 6:00 AM AKST
In force
25 hr
Issued by
NWS Anchorage, AK

The text

As transmitted.

874 
WWAK41 PAFC 171407
WSWAER

URGENT - WINTER WEATHER MESSAGE
National Weather Service Anchorage AK
507 AM AKST Sun Jan 17 2021

AKZ141-180200-
/O.UPG.PAFC.WS.A.0002.210118T1400Z-210119T0600Z/
/O.NEW.PAFC.WS.W.0001.210118T1400Z-210119T1500Z/
Copper River Basin-
Including the cities of Glennallen, Eureka, McCarthy, Paxson, 
and Slana
507 AM AKST Sun Jan 17 2021

...WINTER STORM WARNING IN EFFECT FROM 5 AM MONDAY TO 6 AM AKST
TUESDAY SOUTH AND WEST OF GLENNALLEN...

* WHAT...Heavy snow expected. Total snow accumulations of up to 24
  inches expected south of the Edgerton Highway. Snow 
  accumulations of 6 to 12 inches along the Glenn Highway west of 
  Glennallen. Winds gusting as high as 35 mph.

* WHERE...Along the Richardson Highway south of the the Edgerton
  Highway junction, and along the Glenn Highway west of
  Glennallen.

* WHEN...From 5 AM Monday to 6 AM AKST Tuesday.

* IMPACTS...Plan on slippery and difficult road conditions.

* ADDITIONAL DETAILS...Snow will begin to overspread the region
  from south to north early Monday morning peaking in intensity
  late Monday morning through Monday evening. Snowfall rates
  during the peak of the event may reach as high as 1 inch per
  hour along the Glenn Highway, and up to 2 inches per hour at
  times along the Richardson Highway. Conditions will improve
  Monday evening along the Glenn Highway, but will persist through
  late Monday night along the Richardson Highway.
  

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for snow means severe winter weather
conditions will make travel very hazardous. If you must travel,
keep an extra flashlight, food and water in your vehicle in case
of an emergency. 

For the latest road conditions call 5 1 1 or visit
511.alaska.gov.

&&

$$

AKZ131-180200-
/O.EXT.PAFC.WS.A.0002.210118T1200Z-210119T1500Z/
Northeast Prince William Sound-
Including the cities of Valdez and Thompson Pass
507 AM AKST Sun Jan 17 2021

...WINTER STORM WATCH NOW IN EFFECT FROM LATE TONIGHT THROUGH
LATE MONDAY NIGHT THROUGH THOMPSON PASS...

* WHAT...Heavy snow possible. Total snow accumulations up to 24
  inches possible. Southeast winds 20 to 30 mph with gusts up to
  45 mph expected.

* WHERE...Thompson Pass.

* WHEN...From late tonight through late Monday night.

* IMPACTS...Plan on slippery and difficult road conditions.

* ADDITIONAL DETAILS...Snow will begin to overspread the region
  from south to north late tonight/early Monday peaking in
  intensity late Monday morning through Monday evening. Snowfall
  rates during the peak of the event may reach as high as 2 inches
  per hour. Conditions will begin to slowly improve early Tuesday
  morning with subsiding winds and precipitation becoming more 
  showery. Due to the wet nature of the snow, blowing snow is not 
  expected and should keep visibilities a bit higher.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Monitor the latest forecasts for updates on this situation.

&&

$$

AKZ125-180200-
/O.CON.PAFC.WS.A.0002.210118T1200Z-210119T0900Z/
Western Prince William Sound-
Including the cities of Whittier, Seward, Girdwood, 
and Moose Pass
507 AM AKST Sun Jan 17 2021

...WINTER STORM WATCH REMAINS IN EFFECT FROM LATE TONIGHT THROUGH
MONDAY EVENING THROUGH MONDAY EVENING FOR TURNAGAIN PASS...

* WHAT...Heavy snow possible. Total snow accumulations up to 24
  inches possible. East winds 25 to 35 mph with gusts up to 45 
  mph expected.

* WHERE...Turnagain Pass.

* WHEN...From late Sunday night through Monday evening.

* IMPACTS...Plan on slippery and difficult road conditions.

* ADDITIONAL DETAILS...Snow will begin to overspread the region 
  from southeast to northwest late Sunday night/early Monday 
  peaking in intensity Monday morning through Monday evening. 
  Snowfall rates during the peak of the event may reach as high 
  as 2 inches per hour through the Pass. Conditions will begin 
  to slowly improve Monday evening with subsiding winds and 
  precipitation becoming more showery. Due to the wet nature of 
  the snow, blowing snow is not expected and should keep 
  visibilities a bit higher.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Monitor the latest forecasts for updates on this situation.

&&

$$

http://www.weather.gov/afc
5 follow-up statements
056 
WWAK41 PAFC 180014
WSWAER

URGENT - WINTER WEATHER MESSAGE
National Weather Service Anchorage AK
314 PM AKST Sun Jan 17 2021

AKZ131-180115-
/O.CAN.PAFC.WS.A.0002.210118T1200Z-210119T1500Z/
Northeast Prince William Sound-
Including the cities of Valdez and Thompson Pass
314 PM AKST Sun Jan 17 2021

...WINTER STORM WATCH IS CANCELLED THROUGH LATE MONDAY NIGHT
THROUGH THOMPSON PASS...

Winter Storm Watch is cancelled for Thompson Pass. While heavy
snow remains expected with between 18 to 24 inches of snow, it is
expected to occur over greater than a 12 hour period.

$$

AKZ125-180115-
/O.CAN.PAFC.WS.A.0002.210118T1200Z-210119T0900Z/
Western Prince William Sound-
Including the cities of Whittier, Seward, Girdwood, 
and Moose Pass
314 PM AKST Sun Jan 17 2021

...WINTER STORM WATCH IS CANCELLED THROUGH MONDAY EVENING THROUGH
MONDAY EVENING FOR TURNAGAIN PASS...

Winter Storm Watch is cancelled for Turnagain Pass. While snow is
still expected, there is a great deal of warm air that is expected
to come northward with this system leading to rising snow levels
possibly to or above pass level. Therefore, a rain/snow mix is
anticipated for Monday morning/afternoon as temperatures will be
hovering near to slightly above freezing. Since mixing is
expected, this will greatly reduce snowfall amount with only 6 to
10 inches possible for this event.

$$

AKZ141-190200-
/O.CON.PAFC.WS.W.0001.210118T1400Z-210119T1500Z/
Copper River Basin-
Including the cities of Glennallen, Eureka, McCarthy, Paxson, 
and Slana
314 PM AKST Sun Jan 17 2021

...WINTER STORM WARNING REMAINS IN EFFECT FROM 5 AM MONDAY TO
6 AM AKST TUESDAY SOUTH AND WEST OF GLENNALLEN...

* WHAT...Heavy snow expected. Total snow accumulations of 12 to  
  24 inches expected south of the Edgerton Highway. Snow 
  accumulations of 6 to 12 inches along the Glenn Highway west of 
  Glennallen. Winds gusting as high as 35 mph.

* WHERE...Along the Richardson Highway south of the the Edgerton 
  Highway junction, and along the Glenn Highway west of 
  Glennallen.

* WHEN...From 5 AM Monday to 6 AM AKST Tuesday.

* IMPACTS...Plan on slippery and difficult road conditions.

* ADDITIONAL DETAILS...Snow will begin to overspread the region 
  from south to north early Monday morning peaking in intensity 
  late Monday morning through Monday evening. Snowfall rates 
  during the peak of the event may reach as high as 1 inch per 
  hour along the Glenn Highway, and up to 2 inches per hour at 
  times along the Richardson Highway. Conditions will improve 
  Monday evening along the Glenn Highway, but will persist 
  through late Monday night along the Richardson Highway.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for snow means severe winter weather
conditions will make travel very hazardous. If you must travel,
keep an extra flashlight, food and water in your vehicle in case
of an emergency.

For the latest road conditions call 5 1 1 or visit
511.alaska.gov.

&&

$$

http://www.weather.gov/afc
294 
WWAK41 PAFC 181328
WSWAER

URGENT - WINTER WEATHER MESSAGE
National Weather Service Anchorage AK
428 AM AKST Mon Jan 18 2021

AKZ141-190300-
/O.CON.PAFC.WS.W.0001.210118T1400Z-210119T1500Z/
Copper River Basin-
Including the cities of Glennallen, Eureka, McCarthy, Paxson, 
and Slana
428 AM AKST Mon Jan 18 2021

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 AM AKST TUESDAY
SOUTH AND WEST OF GLENNALLEN...

* WHAT...Heavy snow occurring. Total snow accumulations of 12 to 
  24 inches expected south of the Edgerton Highway. Snow 
  accumulations of 5 to 10 inches along the Glenn Highway west of 
  Glennallen. Winds gusting as high as 45 mph.

* WHERE...Along the Richardson Highway south of the the Edgerton 
  Highway junction, and along the Glenn Highway west of 
  Glennallen.

* WHEN...Through 6 AM AKST Tuesday.

* IMPACTS...Plan on slippery and difficult road conditions.

* ADDITIONAL DETAILS...Snow has begun to overspread the region
  this morning. Snow will peak in intensity late this morning 
  through this evening. Snowfall rates during the peak of the 
  event may reach as high as 1 inch per hour at times along the 
  Glenn Highway, and up to 2 inches per hour at times along the 
  Richardson Highway. Conditions will improve Monday evening along
  the Glenn Highway, but will persist through late Monday night 
  along the Richardson Highway.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for snow means severe winter weather
conditions will make travel very hazardous. If you must travel,
keep an extra flashlight, food and water in your vehicle in case
of an emergency.

For the latest road conditions call 5 1 1 or visit
511.alaska.gov.

&&

$$

http://www.weather.gov/afc
139 
WWAK41 PAFC 190053
WSWAER

URGENT - WINTER WEATHER MESSAGE
National Weather Service Anchorage AK
353 PM AKST Mon Jan 18 2021

AKZ141-190900-
/O.EXT.PAFC.WS.W.0001.000000T0000Z-210119T0900Z/
Copper River Basin-
Including the cities of Glennallen, Eureka, McCarthy, Paxson, 
and Slana
353 PM AKST Mon Jan 18 2021

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL MIDNIGHT AKST 
TONIGHT SOUTH AND WEST OF GLENNALLEN...

* WHAT...Heavy snow occurring. Additional snow accumulations of 8
  to 12 inches south of the Edgerton Highway for storm totals of
  12 to 24 inches. Additional snow accumulation of 2 to 4 inches
  along the Glenn Highway west of Glennallen for total snow
  accumulations of 5 to 10 inches. Winds gusting as high as 45 
  mph.

* WHERE...Along the Richardson Highway south of the the Edgerton 
  Highway junction, and along the Glenn Highway west of 
  Glennallen.

* WHEN...Until midnight AKST tonight.

* IMPACTS...Plan on slippery and difficult road conditions.

* ADDITIONAL DETAILS...Moderate to heavy snow continues to fall
  across the area with snowfall rates up to 2 inches per hour
  along the Richardson Highway and up to 1 inch per hour at times
  along the Glenn Highway. Conditions will improve this evening
  along the Glenn Highway, but will persist through late tonight 
  along the Richardson Highway.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for snow means severe winter weather
conditions will make travel very hazardous. If you must travel,
keep an extra flashlight, food and water in your vehicle in case
of an emergency.

For the latest road conditions call 5 1 1 or visit
511.alaska.gov.

&&

$$

http://www.weather.gov/afc
933 
WWAK41 PAFC 190859
WSWAER

URGENT - WINTER WEATHER MESSAGE
National Weather Service Anchorage AK
1159 PM AKST Mon Jan 18 2021

AKZ141-191500-
/O.EXT.PAFC.WS.W.0001.000000T0000Z-210119T1500Z/
Copper River Basin-
Including the cities of Glennallen, Eureka, McCarthy, Paxson, 
and Slana
1159 PM AKST Mon Jan 18 2021

...WINTER STORM WARNING NOW IN EFFECT UNTIL 6 AM AKST TUESDAY
SOUTH AND WEST OF GLENNALLEN...

* WHAT...Heavy snow occurring. Additional snow accumulations of 3
  to 6 inches expected through 6am.

* WHERE...Along the Richardson Highway south of the the Edgerton 
  Highway junction, and along the Glenn Highway west of 
  Glennallen.

* WHEN...Until 6 AM AKST Tuesday.

* IMPACTS...Plan on slippery and difficult road conditions.

* ADDITIONAL DETAILS...Moderate to heavy snow continues to fall
  across the area with snowfall rates up to 1 inch per hour at
  times along the Glenn Highway. Conditions will improve through
  the overnight from west to east.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for snow means severe winter weather
conditions will make travel very hazardous. If you must travel,
keep an extra flashlight, food and water in your vehicle in case
of an emergency.

For the latest road conditions call 5 1 1 or visit
511.alaska.gov.

&&

$$

http://www.weather.gov/afc
553 
WWAK41 PAFC 191459
WSWAER

URGENT - WINTER WEATHER MESSAGE
National Weather Service Anchorage AK
559 AM AKST Tue Jan 19 2021

AKZ141-191600-
/O.EXP.PAFC.WS.W.0001.000000T0000Z-210119T1500Z/
Copper River Basin-
Including the cities of Glennallen, Eureka, McCarthy, Paxson, 
and Slana
559 AM AKST Tue Jan 19 2021

...WINTER STORM WARNING HAS EXPIRED SOUTH AND WEST OF 
GLENNALLEN...

Snow that may be briefly heavy at times will continue around the
Eureka area of the Glenn Highway for the next few hours, but the 
heaviest and most persistent snow has ended.

$$

http://www.weather.gov/afc

The office that day

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

IssuedProductOfficeCountiesLasted
Jan 16, 3:12 PM AKSTGale WarningAFC13 hr
Jan 16, 3:12 PM AKSTStorm WarningAFC48 hr
Jan 16, 3:25 PM AKSTGale WarningAFC13 hr
Jan 16, 3:25 PM AKSTSmall Craft AdvisoryAFC13 hr
Jan 16, 3:31 PM AKSTSmall Craft AdvisoryAFC13 hr
Jan 16, 3:54 PM AKSTWinter Storm WatchAFC23 hr
Jan 16, 9:11 PM AKSTHigh Wind WarningAFC45 hr
Jan 17, 3:49 AM AKSTGale WarningAFC4 days
Jan 17, 3:58 AM AKSTStorm WarningAFC35 hr
Jan 17, 4:03 AM AKSTGale WarningAFC72 hr
Jan 17, 4:03 AM AKSTHurricane Force Wind WarningAFC36 hr
Jan 17, 4:03 AM AKSTSmall Craft AdvisoryAFC48 hr
Jan 17, 4:03 AM AKSTStorm WarningAFC36 hr
Jan 17, 4:07 AM AKSTBrisk Wind AdvisoryAFC11 hr
Jan 17, 4:07 AM AKSTGale WarningAFC4 days
Jan 17, 4:07 AM AKSTSmall Craft AdvisoryAFC24 hr
Jan 17, 4:07 AM AKSTStorm WarningAFC11 hr
Jan 17, 2:46 PM AKSTGale WarningAFC3 days
Jan 17, 2:53 PM AKSTGale WarningAFC4 days
Jan 17, 2:53 PM AKSTSmall Craft AdvisoryAFC24 hr
Jan 17, 2:53 PM AKSTHeavy Freezing Spray WarningAFC49 hr

Nearby

Winter Storm Warnings in Alaska, 2021Every winter storm warning 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.