Alert archive / Alaska / Winter Storm Warnings in 2021

Winter Storm Warning 6, NWS Juneau, AK

January 31, 2021

NWS Juneau, AK issued this winter storm warning at Jan 31, 2021, 5:44 AM AKST. It took effect at Feb 1, 2021, 3:00 AM AKST. It was in force for 107 min. 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 31, 2021, 5:44 AM AKST (14:44 UTC)
In effect from
Feb 1, 2021, 3:00 AM AKST
Expired
Feb 1, 2021, 4:47 AM AKST
In force
107 min
Issued by
NWS Juneau, AK

The text

As transmitted.

241 
WWAK47 PAJK 311444
WSWAJK

URGENT - WINTER WEATHER MESSAGE
National Weather Service Juneau AK
544 AM AKST Sun Jan 31 2021

AKZ022-010000-
/O.NEW.PAJK.WS.W.0006.210201T1200Z-210202T0900Z/
Salisbury Sound to Cape Fairweather Coastal Area-
Including the cities of Elfin Cove and Pelican
544 AM AKST Sun Jan 31 2021

...WINTER STORM WARNING IN EFFECT FROM 3 AM MONDAY TO MIDNIGHT
AKST MONDAY NIGHT...

* WHAT...Heavy snow expected. Total snow accumulations of 6 to 9 
  inches. Winds gusting as high as 35 mph.

* WHERE...Elfin Cove and Pelican.

* WHEN...From 3 AM Monday to midnight AKST Monday night.

* IMPACTS...Travel could be very difficult.

* ADDITIONAL DETAILS...Greatest snowfall rates expected Monday
  morning.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A warning means that a winter storm is already occurring or
imminent. This storm could pose a threat to life and property.

&&

$$

AKZ019-010000-
/O.NEW.PAJK.WW.Y.0009.210201T1200Z-210202T0300Z/
Haines Borough and Lynn Canal-
Including the city of Haines
544 AM AKST Sun Jan 31 2021

...WINTER WEATHER ADVISORY IN EFFECT FROM 3 AM TO 6 PM AKST
MONDAY...

* WHAT...Snow and blowing snow expected. Total snow accumulations
  of 3 to 7 inches. Winds gusting as high as 40 mph.

* WHERE...Haines and Haines Highway.

* WHEN...From 3 AM to 6 PM AKST Monday.

* IMPACTS...Travel could be difficult.

* ADDITIONAL DETAILS...Greatest snowfall rates expected Monday
  morning.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

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

&&

$$

AKZ020-010000-
/O.NEW.PAJK.WW.Y.0009.210201T1200Z-210202T0600Z/
Glacier Bay-
Including the city of Gustavus
544 AM AKST Sun Jan 31 2021

...WINTER WEATHER ADVISORY IN EFFECT FROM 3 AM TO 9 PM AKST
MONDAY...

* WHAT...Snow expected. Total snow accumulations of 4 to 6 
  inches.

* WHERE...Gustavus.

* WHEN...From 3 AM to 9 PM AKST Monday.

* IMPACTS...Travel could be difficult. 

* ADDITIONAL DETAILS...Greatest snowfall rates expected during the
  day Monday.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

&&

$$

AKZ021-010000-
/O.NEW.PAJK.WW.Y.0009.210201T1500Z-210202T1400Z/
Eastern Chichagof Island-
Including the city of Hoonah
544 AM AKST Sun Jan 31 2021

...WINTER WEATHER ADVISORY IN EFFECT FROM 6 AM MONDAY TO 5 AM
AKST TUESDAY...

* WHAT...Snow expected. Total snow accumulations of 4 to 6 inches.

* WHERE...Hoonah and Tenakee Springs.

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

* IMPACTS...Travel could be difficult. 

* ADDITIONAL DETAILS...Greatest snowfall rates expected Monday
  afternoon and evening.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

&&

$$

AKZ024-010000-
/O.NEW.PAJK.WW.Y.0009.210202T0000Z-210202T1800Z/
Eastern Baranof Island and Southern Admiralty Island-
Including the city of Angoon
544 AM AKST Sun Jan 31 2021

...WINTER WEATHER ADVISORY IN EFFECT FROM 3 PM MONDAY TO 9 AM
AKST TUESDAY...

* WHAT...Snow expected. Total snow accumulations of 3 to 5 
  inches.

* WHERE...Eastern Baranof Island and Southern Admiralty Island,
  including Angoon.

* WHEN...From 3 PM Monday to 9 AM AKST Tuesday.

* IMPACTS...Travel could be difficult.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

&&

$$

AKZ026-010000-
/O.NEW.PAJK.WS.A.0004.210201T1800Z-210202T1800Z/
Inner Channels from Kupreanof Island to Etolin Island-
Including the cities of Petersburg, Wrangell, and Kake
544 AM AKST Sun Jan 31 2021

...WINTER STORM WATCH IN EFFECT FROM MONDAY MORNING THROUGH
TUESDAY MORNING...

* WHAT...Heavy snow possible. Total snow accumulations of 3 to 9 
  inches possible.

* WHERE...Mitkof to Kuiu Island, including Petersburg and Kake.

* WHEN...From Monday morning through Tuesday morning.

* IMPACTS...Travel could be very difficult.

* ADDITIONAL DETAILS...Greatest snowfall rates expected during the
  day Monday in Petersburg and Monday night for Kake.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Monitor the latest forecasts for updates on this situation. 

&&

$$

AKZ027-028-010000-
/O.NEW.PAJK.WS.A.0004.210202T0300Z-210202T2100Z/
Dixon Entrance to Cape Decision Coastal Area-
Southern Inner Channels-
Including the cities of Craig, Klawock, Ketchikan, and Metlakatla
544 AM AKST Sun Jan 31 2021

...WINTER STORM WATCH IN EFFECT FROM MONDAY EVENING THROUGH
TUESDAY MORNING...

* WHAT...Heavy snow possible. Total snow accumulations of 5 to 10
  inches possible.

* WHERE...Prince of Wales Island, including Craig, Klawock, and
  Hollis.

* WHEN...From Monday evening through Tuesday morning.

* IMPACTS...Travel could be very difficult to impossible.

* ADDITIONAL DETAILS...Greatest snowfall rates expected late
  Monday night.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Monitor the latest forecasts for updates on this situation. 

&&

$$

http://www.weather.gov/juneau
3 follow-up statements
957 
WWAK47 PAJK 312139
WSWAJK

URGENT - WINTER WEATHER MESSAGE
National Weather Service Juneau AK
1239 PM AKST Sun Jan 31 2021


AKZ022-010200-
/O.CON.PAJK.WS.W.0006.210201T1200Z-210202T0900Z/
Salisbury Sound to Cape Fairweather Coastal Area-
Including the cities of Elfin Cove and Pelican
1239 PM AKST Sun Jan 31 2021

...WINTER STORM WARNING REMAINS IN EFFECT FROM 3 AM MONDAY TO
MIDNIGHT AKST MONDAY NIGHT...

* WHAT...Heavy snow expected. Total snow accumulations of 6 to 9 
  inches. Winds gusting as high as 35 mph.

* WHERE...Elfin Cove and Pelican.

* WHEN...From 3 AM Monday to midnight AKST Monday night.

* IMPACTS...Travel could be very difficult.

* ADDITIONAL DETAILS...Greatest snowfall rates expected Monday 
  morning.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A warning means that a winter storm is already occurring or
imminent. This storm could pose a threat to life and property.

&&

$$

AKZ019-010200-
/O.CON.PAJK.WW.Y.0009.210201T1200Z-210202T0300Z/
Haines Borough and Lynn Canal-
Including the city of Haines
1239 PM AKST Sun Jan 31 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 3 AM TO 6 PM
AKST MONDAY...

* WHAT...Snow and blowing snow expected. Total snow 
  accumulations of 3 to 7 inches. Winds gusting as high as 40 
  mph.

* WHERE...Haines and Haines Highway.

* WHEN...From 3 AM to 6 PM AKST Monday.

* IMPACTS...Travel could be difficult.

* ADDITIONAL DETAILS...Greatest snowfall rates expected Monday 
  morning.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling.

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

&&

$$

AKZ020-010200-
/O.CON.PAJK.WW.Y.0009.210201T1200Z-210202T0600Z/
Glacier Bay-
Including the city of Gustavus
1239 PM AKST Sun Jan 31 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 3 AM TO 9 PM
AKST MONDAY...

* WHAT...Snow expected. Total snow accumulations of 4 to 6 
  inches.

* WHERE...Gustavus.

* WHEN...From 3 AM to 9 PM AKST Monday.

* IMPACTS...Travel could be difficult.

* ADDITIONAL DETAILS...Greatest snowfall rates expected during 
  the day Monday.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling.

&&

$$

AKZ021-010200-
/O.CON.PAJK.WW.Y.0009.210201T1500Z-210202T1400Z/
Eastern Chichagof Island-
Including the city of Hoonah
1239 PM AKST Sun Jan 31 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 6 AM MONDAY TO
5 AM AKST TUESDAY...

* WHAT...Snow expected. Total snow accumulations of 4 to 6 
  inches.

* WHERE...Hoonah and Tenakee Springs.

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

* IMPACTS...Travel could be difficult.

* ADDITIONAL DETAILS...Greatest snowfall rates expected Monday 
  afternoon and evening.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling.

&&

$$

AKZ024-010200-
/O.CON.PAJK.WW.Y.0009.210202T0000Z-210202T1800Z/
Eastern Baranof Island and Southern Admiralty Island-
Including the city of Angoon
1239 PM AKST Sun Jan 31 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 3 PM MONDAY TO
9 AM AKST TUESDAY...

* WHAT...Snow expected. Total snow accumulations of 3 to 5 
  inches.

* WHERE...Eastern Baranof Island and Southern Admiralty Island, 
  including Angoon.

* WHEN...From 3 PM Monday to 9 AM AKST Tuesday.

* IMPACTS...Travel could be difficult.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling.

&&

$$

AKZ026-010200-
/O.CON.PAJK.WS.A.0004.210201T1800Z-210202T1800Z/
Inner Channels from Kupreanof Island to Etolin Island-
Including the cities of Petersburg, Wrangell, and Kake
1239 PM AKST Sun Jan 31 2021

...WINTER STORM WATCH REMAINS IN EFFECT FROM MONDAY MORNING
THROUGH TUESDAY MORNING...

* WHAT...Heavy snow possible. Total snow accumulations of 3 to 9 
  inches possible.

* WHERE...Mitkof to Kuiu Island, including Petersburg and Kake.

* WHEN...From Monday morning through Tuesday morning.

* IMPACTS...Travel could be very difficult.

* ADDITIONAL DETAILS...Greatest snowfall rates expected during the
  day Monday in Petersburg and Monday night for Kake.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Monitor the latest forecasts for updates on this situation.

&&

$$

AKZ027-028-010200-
/O.CON.PAJK.WS.A.0004.210202T0300Z-210202T2100Z/
Dixon Entrance to Cape Decision Coastal Area-
Southern Inner Channels-
Including the cities of Craig, Klawock, Ketchikan, and Metlakatla
1239 PM AKST Sun Jan 31 2021

...WINTER STORM WATCH REMAINS IN EFFECT FROM MONDAY EVENING
THROUGH TUESDAY MORNING...

* WHAT...Heavy snow possible. Total snow accumulations of 5 to 
  10 inches possible.

* WHERE...Prince of Wales Island, including Craig, Klawock, and 
  Hollis.

* WHEN...From Monday evening through Tuesday morning.

* IMPACTS...Travel could be very difficult to impossible.

* ADDITIONAL DETAILS...Greatest snowfall rates expected late 
  Monday night.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Monitor the latest forecasts for updates on this situation.

&&

$$

http://www.weather.gov/juneau
520 
WWAK47 PAJK 010009
WSWAJK

URGENT - WINTER WEATHER MESSAGE
National Weather Service Juneau AK
309 PM AKST Sun Jan 31 2021


AKZ026-011400-
/O.UPG.PAJK.WS.A.0004.210201T1800Z-210202T1800Z/
/O.EXB.PAJK.WS.W.0006.210201T1800Z-210202T1800Z/
Inner Channels from Kupreanof Island to Etolin Island-
Including the cities of Petersburg, Wrangell, and Kake
309 PM AKST Sun Jan 31 2021

...WINTER STORM WARNING IN EFFECT FROM 9 AM MONDAY TO 9 AM AKST
TUESDAY...

* WHAT...Heavy snow expected. Snow accumulations of 6 to 10
  inches. Lower amounts of 1 to 3 inches expected in Petersburg
  and Wrangell.

* WHERE...Inner Channels from Kupreanof Island to Etolin Island
  including Kake. 

* WHEN...From 9 AM Monday to 9 AM AKST Tuesday.

* IMPACTS...Travel could be very difficult.

* ADDITIONAL DETAILS...A heavy snow band is expected to set up
  Monday evening through Tuesday morning across the Central
  Panhandle. Lower confidence exists regarding where exactly this
  snow band will develop. Current forecast is for Kake to receive the
  highest snow amounts. However, any deviation of the location of
  this heavy snow band can significantly impact snowfall amounts 
  for any given area. 
 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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.

&&

$$

AKZ022-011400-
/O.CON.PAJK.WS.W.0006.210201T1200Z-210202T0900Z/
Salisbury Sound to Cape Fairweather Coastal Area-
Including the cities of Elfin Cove and Pelican
309 PM AKST Sun Jan 31 2021

...WINTER STORM WARNING REMAINS IN EFFECT FROM 3 AM MONDAY TO
MIDNIGHT AKST MONDAY NIGHT...

* WHAT...Heavy snow expected. Total snow accumulations of 6 to 10
  inches. Lower snow amounts of 2 to 5 inches for Elfin Cove. 

* WHERE...Pelican.

* WHEN...From 3 AM Monday to midnight AKST Monday night.

* IMPACTS...Travel could be very difficult.

* ADDITIONAL DETAILS...Greatest snowfall rates expected during the
  day Monday.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A warning means that a winter storm is already occurring or
imminent. This storm could pose a threat to life and property.

&&

$$

AKZ027-028-011400-
/O.UPG.PAJK.WS.A.0004.210202T0300Z-210202T2100Z/
/O.EXB.PAJK.WW.Y.0009.210202T0300Z-210203T0000Z/
Dixon Entrance to Cape Decision Coastal Area-
Southern Inner Channels-
Including the cities of Craig, Klawock, Ketchikan, and Metlakatla
309 PM AKST Sun Jan 31 2021

...WINTER WEATHER ADVISORY IN EFFECT FROM 6 PM MONDAY TO 3 PM
AKST TUESDAY...

* WHAT...Snow expected. Total snow accumulations of 2 to 4 inches
  with higher amounts up to 8 inches at upper elevations on the
  road system. Lower snow amounts of up to 2 inches for Ketchikan
  and Metlakatla.

* WHERE...Dixon Entrance to Cape Decision Coastal Area and
  Southern Inner Channels including Klawock, Craig, Hydaburg,
  Thorne Bay, Coffman Cove, and higher elevations on Prince of
  Wales Island.

* WHEN...From 6 PM Monday to 3 PM AKST Tuesday.

* IMPACTS...Travel could be very difficult to impossible.

* ADDITIONAL DETAILS...A heavy band of snow is expected to move
  over Prince of Wales Island Monday night; however, lower
  confidence exists in the exact locations where heavy snow may
  develop. Any deviation to the track of this system can
  significantly affect snowfall amounts for any given location.
  Greatest snowfall rates expected late Monday night.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

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

&&

$$

AKZ017-011400-
/O.EXB.PAJK.WW.Y.0009.210201T0600Z-210202T0000Z/
Cape Fairweather to Cape Suckling Coastal Area-
Including the city of Yakutat
309 PM AKST Sun Jan 31 2021

...WINTER WEATHER ADVISORY IN EFFECT FROM 9 PM THIS EVENING TO
3 PM AKST MONDAY...

* WHAT...Snow expected. Total snow accumulations of 4 to 7 
  inches.

* WHERE...Cape Fairweather to Cape Suckling Coastal Area including
  Yakutat.

* WHEN...From 9 PM this evening to 3 PM AKST Monday.

* IMPACTS...Travel could be difficult.

* ADDITIONAL DETAILS...Greatest snowfall rates expected early Monday
  morning.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

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

&&

$$

AKZ020-021-024-011400-
/O.EXT.PAJK.WW.Y.0009.210201T1500Z-210202T1500Z/
Glacier Bay-Eastern Chichagof Island-
Eastern Baranof Island and Southern Admiralty Island-
Including the cities of Gustavus, Hoonah, and Angoon
309 PM AKST Sun Jan 31 2021

...WINTER WEATHER ADVISORY NOW IN EFFECT FROM 6 AM MONDAY TO 6 AM
AKST TUESDAY...

* WHAT...Snow expected. Total snow accumulations of 3 to 5 
  inches.

* WHERE...Eastern Baranof Island and Southern Admiralty Island,
  including Gustavus, Hoonah, Angoon, and Tenakee Springs.

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

* IMPACTS...Travel could be difficult.

* ADDITIONAL DETAILS...Heaviest snowfall rates expected Monday
  afternoon for Gustavus and Monday evening to Monday night for
  Hoonah, Tenakee Springs, and Angoon.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling.

&&

$$

AKZ019-011400-
/O.CON.PAJK.WW.Y.0009.210201T1200Z-210202T0300Z/
Haines Borough and Lynn Canal-
Including the city of Haines
309 PM AKST Sun Jan 31 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 3 AM TO 6 PM
AKST MONDAY...

* WHAT...Snow and blowing snow expected. Total snow accumulations
  of 3 to 6 inches.

* WHERE...Haines and Haines Highway.

* WHEN...From 3 AM to 6 PM AKST Monday.

* IMPACTS...Travel could be difficult.

* ADDITIONAL DETAILS...Greatest snowfall rates expected Monday 
  morning.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling.

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

&&

$$

http://www.weather.gov/juneau
351 
WWAK47 PAJK 011347
WSWAJK

URGENT - WINTER WEATHER MESSAGE
National Weather Service Juneau AK
447 AM AKST Mon Feb 1 2021

AKZ022-011500-
/O.CAN.PAJK.WS.W.0006.000000T0000Z-210202T0900Z/
Salisbury Sound to Cape Fairweather Coastal Area-
Including the cities of Elfin Cove and Pelican
447 AM AKST Mon Feb 1 2021

...WINTER STORM WARNING IS CANCELLED...

The threat of heavy snow has greatly diminished. We have lowered
snow amounts to around 1 inch this afternoon through this evening.


$$

AKZ026-011500-
/O.CAN.PAJK.WS.W.0006.210201T1800Z-210202T1800Z/
Inner Channels from Kupreanof Island to Etolin Island-
Including the cities of Petersburg, Wrangell, and Kake
447 AM AKST Mon Feb 1 2021

...WINTER STORM WARNING IS CANCELLED...

The threat of heavy snow has greatly diminished. We have lowered
snow amounts to around 1 to 2 inches today with greatest amounts
near Kake.

$$

AKZ020-011500-
/O.CAN.PAJK.WW.Y.0009.210201T1500Z-210202T1500Z/
Glacier Bay-
Including the city of Gustavus
447 AM AKST Mon Feb 1 2021

...WINTER WEATHER ADVISORY IS CANCELLED...

The threat of heavy snow has greatly diminished. We have lowered
snow amounts to around 1 inch this afternoon through this evening.


$$

AKZ019-011500-
/O.CAN.PAJK.WW.Y.0009.000000T0000Z-210202T0300Z/
Haines Borough and Lynn Canal-
Including the city of Haines
447 AM AKST Mon Feb 1 2021

...WINTER WEATHER ADVISORY IS CANCELLED...

The threat of heavy snow has greatly diminished. We have lowered
snow amounts to around 1 inch this afternoon through this evening.


$$

AKZ027-028-011500-
/O.CAN.PAJK.WW.Y.0009.210202T0300Z-210203T0000Z/
Dixon Entrance to Cape Decision Coastal Area-
Southern Inner Channels-
Including the cities of Craig, Klawock, Ketchikan, and Metlakatla
447 AM AKST Mon Feb 1 2021

...WINTER WEATHER ADVISORY IS CANCELLED...

Warming temperatures will greatly diminish snowfall tonight and
Wednesday. We are now forecasting snowfall less than 1 inch near
sea level.

$$

AKZ018-012200-
/O.NEW.PAJK.WC.Y.0002.210202T0900Z-210203T1500Z/
Taiya Inlet and Klondike Highway-
Including the city of Skagway
447 AM AKST Mon Feb 1 2021

...WIND CHILL ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 6 AM
AKST WEDNESDAY...

* WHAT...Very cold wind chills expected. Wind chills as low as 
  30 below zero.

* WHERE...The Klondike Highway at White Pass.

* WHEN...From midnight tonight to 6 AM AKST Wednesday.

* IMPACTS...The cold wind chills could cause frostbite on 
  exposed skin in as little as 30 minutes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Use caution while traveling outside. Wear appropriate clothing, a
hat, and gloves. 

&&

$$

AKZ025-012200-
/O.EXB.PAJK.WW.Y.0009.210201T1800Z-210202T0600Z/
Juneau Borough and Northern Admiralty Island-
Including the city of Juneau
447 AM AKST Mon Feb 1 2021

...WINTER WEATHER ADVISORY IN EFFECT FROM 9 AM THIS MORNING TO
9 PM AKST THIS EVENING...

* WHAT...Snow expected. Total snow accumulations of 3 to 5 
  inches.

* WHERE...Juneau and Douglas.

* WHEN...From 9 AM this morning to 9 PM AKST this evening.

* IMPACTS...Travel could be difficult.

* ADDITIONAL DETAILS...Greatest snowfall rates expected Monday
  afternoon.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

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

&&

$$

AKZ024-012200-
/O.EXT.PAJK.WW.Y.0009.210201T1800Z-210202T0600Z/
Eastern Baranof Island and Southern Admiralty Island-
Including the city of Angoon
447 AM AKST Mon Feb 1 2021

...WINTER WEATHER ADVISORY NOW IN EFFECT FROM 9 AM THIS MORNING
TO 9 PM AKST THIS EVENING...

* WHAT...Snow expected. Total snow accumulations of 3 to 5 
  inches.

* WHERE...Angoon.

* WHEN...From 9 AM this morning to 9 PM AKST this evening.

* IMPACTS...Travel could be difficult.

* ADDITIONAL DETAILS...Heaviest snowfall rates expected Monday
  afternoon.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling.

&&

$$

AKZ021-012200-
/O.EXT.PAJK.WW.Y.0009.210201T2100Z-210202T0900Z/
Eastern Chichagof Island-
Including the city of Hoonah
447 AM AKST Mon Feb 1 2021

...WINTER WEATHER ADVISORY NOW IN EFFECT FROM NOON TODAY TO
MIDNIGHT AKST TONIGHT...

* WHAT...Snow expected. Total snow accumulations of 3 to 5 
  inches.

* WHERE...Portions of the central Inner Channels including Hoonah
  and Tenakee Springs.

* WHEN...From noon today to midnight AKST tonight.

* IMPACTS...Travel could be difficult.

* ADDITIONAL DETAILS...Heaviest snowfall rates expected Monday
  afternoon through early Monday evening.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling.

&&

$$

AKZ017-012200-
/O.CON.PAJK.WW.Y.0009.000000T0000Z-210202T0000Z/
Cape Fairweather to Cape Suckling Coastal Area-
Including the city of Yakutat
447 AM AKST Mon Feb 1 2021

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

* WHAT...Snow expected. Total snow accumulations of 4 to 7 
  inches.

* WHERE...The northeast Gulf Coast including Yakutat.

* WHEN...From 9 PM this evening to 3 PM AKST Monday.

* IMPACTS...Travel could be difficult.

* ADDITIONAL DETAILS...Greatest snowfall rates expected this 
  morning.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling.

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

&&

$$

http://www.weather.gov/juneau

What forecasters said that day

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

NWS Juneau, AK wrote its last area forecast discussion before this winter storm warning went out at Jan 30, 2:53 PM AKST, 14 hours 51 minutes earlier.

Area forecast discussion, Jan 30, 2:53 PM AKST, 14 hours 51 minutes before
Southeast Alaska Forecast Discussion
National Weather Service Juneau AK
253 PM AKST Sat Jan 30 2021

.SHORT TERM.../Through Monday/ Multiple low pressure centers
continue to swirl around the Gulf of Alaska and panhandle today.
Satellite imagery shows at least 3 separate circulation centers
in the gulf with a fourth stronger one south of Haida Gwaii. These
lows have been sending waves of showers (mostly snow) over the
panhandle for the last 24 hours or so. Received snow reports have
been low with up to 3 inches received in some places overnight.

Not much has changed Through Sun night as the showers are still
expected to diminish through the next 12 hours. This is mainly due
to northerly outflow increasing tonight ahead of a new push of
cold air from the north. Winds in Lynn Canal are expected to reach
25 to 30 kt winds coming out of Taku Inlet and Cross Sound at the
same time.

More significant changes start showing up for Mon as a new low
forms in the northern gulf while outflow starts getting stronger.
Some more detail was added to the outflow winds compared to
previous forecasts, but overall wind changes were not that
substantial (Gale force winds still expected for Lynn Canal Mon)
Temperatures will also be cooling off again with some areas in the
northern half barely reaching 30 for highs on Mon.

The largest change in the forecast occurred at the end of the
short range Mon into Mon night as a low develops in the northern
gulf and slides SE. Current guidance has it sliding SE noticeably
faster then the previous forecast depicted, with the Nam and
Canadian faster then the ECMWF and GFS. However, Ensemble means
were supporting the slower solutions of the GFS and ECMWF, so
headed in that direction, but those were still a good 3 to 6 hours
faster then the previous forecast. Something to keep an eye on as
well, is that guidance is trying to form a convergence zone over
Kupreanof and Kuiu Island areas Mon into Mon night that could
result in some significant snow falls for those areas. Kept them
around advisory criteria for now, as confidence is low where
exactly it will set up, if it sets up at all, but snow totals
could range much higher or lower then currently depicted.

.LONG TERM.../Monday through Saturday night/ Extended forecast
period begins with a low pressure system encroaching on the region
from the west. A strong pressure gradient across the northern
panhandle will be the catalyst for some decent winds from Yakutat
to Skagway and areas south to the Icy Strait corridor and
Stephens Passage. Most areas should already be sufficiently cold
from offshore flow to see some snow from this system. While this
is not looking to be a particularly wet system, models are
beginning to come into agreement that there may be a bit more
moisture with this initial event than previously thought. While
highest snowfall totals still look to be set for northern areas,
there is growing indication that areas as far south as Ketchikan
could see an inch or two. For the time being, have switched gears
from the previous forecast and opted to leave the higher precip
amounts in for further scrutiny as the event draws nearer,
however, should offshore flow win out, this precip heavy forecast
may not come to fruition.

The next system that will impact the region moves in Tuesday
night into Wednesday. Still a decent amount of uncertainty exists
with this particular feature. While again, ambient conditions
should be cold enough across the region to initially support
snow, flow around this system will be coming in from the south.
The northern extent of this push of relatively warmer air will
again open up the forecast challenge of determining where the
elusive rain/snow line will be established. Combined with the
notion that any existing snow on the ground could contribute to
evaporative cooling makes this event too difficult to speculate on
particular impacts with any certainty at this time. What is known
is that this does look to have a tropical connection unlike it's
predecessor which could bring a decent amount of precip to the
region. After this system passes, another brief break in the
active weather pattern looks on tap before yet another system
potentially makes its way toward the region late week.

&&

.AJK WATCHES/WARNINGS/ADVISORIES...
PUBLIC...Strong Wind until 9 PM AKST this evening for AKZ018.
MARINE...Small Craft Advisory for PKZ012-013-041>043-051-052.

&&

EAL/JDR

Visit us at http://www.weather.gov/Juneau

The office that day

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

IssuedProductOfficeCountiesLasted
Jan 30, 3:38 PM AKSTSmall Craft AdvisoryAJK24 hr
Jan 30, 10:46 PM AKSTSmall Craft AdvisoryAJK29 hr
Jan 31, 3:42 AM AKSTGale WarningAJK25 hr
Jan 31, 3:42 AM AKSTSmall Craft AdvisoryAJK25 hr
Jan 31, 5:44 AM AKSTWinter Storm WatchAJK9 hr
Jan 31, 5:44 AM AKSTWinter Weather AdvisoryAJK41 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.