Wind Chill Advisory 2, NWS Anchorage, AK

669 
WWAK42 PAFC 261353
WSWALU

URGENT - WINTER WEATHER MESSAGE
National Weather Service Anchorage AK
453 AM AKST Fri Jan 26 2024

AKZ152-155-161-270200-
/O.CON.PAFC.WC.Y.0002.000000T0000Z-240128T2000Z/
Lower Kuskokwim Valley-Kuskokwim Delta-Bristol Bay-
Including the cities of Aniak, Sleetmute, Bethel, Nunivak Island,
King Salmon, Dillingham, Naknek, and Pilot Point
453 AM AKST Fri Jan 26 2024

...WIND CHILL ADVISORY REMAINS IN EFFECT UNTIL 11 AM AKST
SUNDAY...

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

* WHERE...Lower Kuskokwim Valley, Kuskokwim Delta and Bristol 
  Bay. 

* WHEN...Until 11 AM AKST Sunday.

* IMPACTS...The dangerously cold wind chills could cause 
  frostbite on exposed skin in as little as 5 minutes. 

* ADDITIONAL DETAILS...Air temperatures will continue to plummet
  across Southwest Alaska through this weekend with the coldest
  temperatures expected for interior Alaska by Sunday morning. 
  Winds are expected to increase and will lead to dangerously cold
  wind chills. The onset of wind chills dropping below minus 40 
  will begin in the lower Kuskokwim Valley, then spread to the 
  Kuskokwim Delta before reaching the greater Bristol Bay area 
  tonight with frigid temperatures likely reaching the Southwest 
  coast by this evening. Temperatures will gradually rebound early
  to midweek next week.
  

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

541 
WWAK42 PAFC 270032
WSWALU

URGENT - WINTER WEATHER MESSAGE
National Weather Service Anchorage AK
332 PM AKST Fri Jan 26 2024

AKZ152-155-161-271500-
/O.CON.PAFC.WC.Y.0002.000000T0000Z-240128T2000Z/
Lower Kuskokwim Valley-Kuskokwim Delta-Bristol Bay-
Including the cities of Aniak, Sleetmute, Bethel, Nunivak Island,
King Salmon, Dillingham, Naknek, and Pilot Point
332 PM AKST Fri Jan 26 2024

...WIND CHILL ADVISORY REMAINS IN EFFECT UNTIL 11 AM AKST
SUNDAY...

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

* WHERE...Lower Kuskokwim Valley, Kuskokwim Delta and Bristol 
  Bay.

* WHEN...Until 11 AM AKST Sunday.

* IMPACTS...The dangerously cold wind chills could cause 
  frostbite on exposed skin in as little as 5 minutes.

* ADDITIONAL DETAILS...Air temperatures will continue to plummet 
  across Southwest Alaska through this weekend with the coldest 
  temperatures expected for interior Alaska by Sunday morning. 
  Winds are expected to increase and will lead to dangerously 
  cold wind chills. The onset of wind chills dropping below 
  minus 40 will begin in the lower Kuskokwim Valley, then spread 
  to the Kuskokwim Delta before reaching the greater Bristol Bay 
  area tonight with frigid temperatures likely reaching the 
  Southwest coast by this evening. Temperatures will gradually 
  rebound early to midweek next week.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

http://www.weather.gov/afc

763 
WWAK42 PAFC 271411
WSWALU

URGENT - WINTER WEATHER MESSAGE
National Weather Service Anchorage AK
511 AM AKST Sat Jan 27 2024

AKZ152-155-161-280200-
/O.CON.PAFC.WC.Y.0002.000000T0000Z-240128T2000Z/
Lower Kuskokwim Valley-Kuskokwim Delta-Bristol Bay-
Including the cities of Aniak, Sleetmute, Bethel, Nunivak Island,
King Salmon, Dillingham, Naknek, and Pilot Point
511 AM AKST Sat Jan 27 2024

...WIND CHILL ADVISORY REMAINS IN EFFECT UNTIL 11 AM AKST
SUNDAY...

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

* WHERE...Lower Kuskokwim Valley, Kuskokwim Delta and Bristol 
  Bay. 

* WHEN...Until 11 AM AKST Sunday.

* IMPACTS...The dangerously cold wind chills could cause 
  frostbite on exposed skin in as little as 5 minutes. 

* ADDITIONAL DETAILS...Air temperatures will continue to plummet
  across Southwest Alaska through this weekend with the coldest
  temperatures expected for interior Alaska by Sunday morning.
  Winds are expected to increase and will lead to dangerously cold
  wind chills. Wind chills below minus 40 have been observed in
  the lower Kuskokwim Valley and are spreading to the Kuskokwim
  Delta and Greater Bristol Bay area this morning with frigid 
  temperatures likely reaching the Southwest coast by this 
  evening. Temperatures will gradually rebound early to midweek 
  next week. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

860 
WWAK42 PAFC 272340
WSWALU

URGENT - WINTER WEATHER MESSAGE
National Weather Service Anchorage AK
240 PM AKST Sat Jan 27 2024

AKZ152-155-161-281500-
/O.CON.PAFC.WC.Y.0002.000000T0000Z-240128T2000Z/
Lower Kuskokwim Valley-Kuskokwim Delta-Bristol Bay-
Including the cities of Aniak, Sleetmute, Bethel, Nunivak Island,
King Salmon, Dillingham, Naknek, and Pilot Point
240 PM AKST Sat Jan 27 2024

...WIND CHILL ADVISORY REMAINS IN EFFECT UNTIL 11 AM AKST
SUNDAY...

* WHAT...Very cold wind chills expected. Wind chills as low as 65 
  below zero.

* WHERE...Lower Kuskokwim Valley, Kuskokwim Delta and Bristol 
  Bay.

* WHEN...Until 11 AM AKST Sunday.

* IMPACTS...The dangerously cold wind chills could cause 
  frostbite on exposed skin in as little as 5 minutes.

* ADDITIONAL DETAILS...An extremely cold Arctic airmass will
  continue to linger across Southwest Alaska through at least the
  weekend. The Lower Kuskokwim Valley, Kuskokwim Delta, and
  Bristol Bay have observed frigid wind chills at or below -40, 
  with the Lower Kuskokwim Valley even seeing values below -50. As
  winds lightly diminish through the end of the weekend, the 
  Arctic airmass will stay in place, prolonging very cold wind 
  chills. Temperatures will gradually rebound early to midweek 
  next week.
  

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

http://www.weather.gov/afc

128 
WWAK42 PAFC 281334
WSWALU

URGENT - WINTER WEATHER MESSAGE
National Weather Service Anchorage AK
434 AM AKST Sun Jan 28 2024

AKZ152-281445-
/O.CAN.PAFC.WC.Y.0002.000000T0000Z-240128T2000Z/
Lower Kuskokwim Valley-
Including the cities of Aniak and Sleetmute
434 AM AKST Sun Jan 28 2024

...WIND CHILL ADVISORY IS CANCELLED...

Wind speeds have eased across the Lower Kuskokwim Valley,
diminishing the wind chill concern. Cold temperatures however
remain prevalent across the region with cold temperatures
exceeding 35 below zero for much of the region. Temperatures the
next few days will recover slightly during daylight hours, 
reaching up to -25 for some areas before returning to near -45 
during overnight periods.

$$

AKZ155-161-282145-
/O.EXT.PAFC.WC.Y.0002.000000T0000Z-240129T2100Z/
Kuskokwim Delta-Bristol Bay-
Including the cities of Bethel, Nunivak Island, King Salmon, 
Dillingham, Naknek, and Pilot Point
434 AM AKST Sun Jan 28 2024

...WIND CHILL ADVISORY NOW IN EFFECT UNTIL NOON AKST MONDAY...

* WHAT...Very cold wind chills expected. Wind chills as low as 50
  below zero. 

* WHERE...Kuskokwim Delta and Bristol Bay. 

* WHEN...Until Noon AKST Monday.

* IMPACTS...The dangerously cold wind chills could cause 
  frostbite on exposed skin in as little as 5 minutes. 

* ADDITIONAL DETAILS...An extremely cold Arctic airmass will
  continue to linger across Southwest Alaska through at least the
  weekend. The Kuskokwim Delta and Bristol Bay have observed
  frigid wind chills at or below -40. As winds lightly diminish
  through the end of the weekend, the Arctic airmass will stay in
  place, prolonging very cold wind chills. Temperatures will
  gradually rebound midweek next week. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

262 
WWAK42 PAFC 281406
WSWALU

URGENT - WINTER WEATHER MESSAGE
National Weather Service Anchorage AK
506 AM AKST Sun Jan 28 2024

AKZ155-161-290200-
/O.CON.PAFC.WC.Y.0002.000000T0000Z-240129T2100Z/
Kuskokwim Delta-Bristol Bay-
Including the cities of Bethel, Nunivak Island, King Salmon, 
Dillingham, Naknek, and Pilot Point
506 AM AKST Sun Jan 28 2024

...WIND CHILL ADVISORY REMAINS IN EFFECT UNTIL NOON AKST MONDAY...

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

* WHERE...Kuskokwim Delta and Bristol Bay.

* WHEN...Until Noon AKST Monday.

* IMPACTS...The dangerously cold wind chills could cause 
  frostbite on exposed skin in as little as 5 minutes. 

* ADDITIONAL DETAILS...An extremely cold Arctic airmass will 
  continue to linger across Southwest Alaska through at least 
  the weekend. The Kuskokwim Delta and Bristol Bay have observed 
  frigid wind chills at or below -40. As winds lightly diminish 
  through the end of the weekend, the Arctic airmass will stay 
  in place, prolonging very cold wind chills. Temperatures will 
  gradually rebound midweek next week. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

374 
WWAK42 PAFC 290007
WSWALU

URGENT - WINTER WEATHER MESSAGE
National Weather Service Anchorage AK
307 PM AKST Sun Jan 28 2024

AKZ155-161-291500-
/O.CON.PAFC.WC.Y.0002.000000T0000Z-240129T2100Z/
Kuskokwim Delta-Bristol Bay-
Including the cities of Bethel, Nunivak Island, King Salmon, 
Dillingham, Naknek, and Pilot Point
307 PM AKST Sun Jan 28 2024

...WIND CHILL ADVISORY REMAINS IN EFFECT UNTIL NOON AKST MONDAY...

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

* WHERE...Kuskokwim Delta and Bristol Bay.

* WHEN...Until Noon AKST Monday.

* IMPACTS...The dangerously cold wind chills could cause 
  frostbite on exposed skin in as little as 5 minutes.

* ADDITIONAL DETAILS...An extremely cold Arctic airmass remains 
  in place over Southwest Alaska. The Kuskokwim Delta and Bristol 
  Bay have observed frigid wind chills at or below -40. As winds 
  lightly diminish through the end of the weekend, the Arctic 
  airmass will stay in place, prolonging very cold wind chills. 
  Temperatures will gradually rebound midweek next week.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

http://www.weather.gov/afc

758 
WWAK42 PAFC 291203
WSWALU

URGENT - WINTER WEATHER MESSAGE
National Weather Service Anchorage AK
303 AM AKST Mon Jan 29 2024

AKZ155-161-292100-
/O.CON.PAFC.WC.Y.0002.000000T0000Z-240129T2100Z/
Kuskokwim Delta-Bristol Bay-
Including the cities of Bethel, Nunivak Island, King Salmon, 
Dillingham, Naknek, and Pilot Point
303 AM AKST Mon Jan 29 2024

...WIND CHILL ADVISORY REMAINS IN EFFECT UNTIL NOON AKST TODAY...

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

* WHERE...Kuskokwim Delta and Bristol Bay.

* WHEN...Until noon AKST today.

* IMPACTS...The dangerously cold wind chills could cause 
  frostbite on exposed skin in as little as 5 minutes.

* ADDITIONAL DETAILS...An extremely cold Arctic airmass remains 
  in place over Southwest Alaska. The Kuskokwim Delta and 
  Bristol Bay have observed frigid wind chills at or below 40. -
  As winds lightly diminish through the end of the weekend, the 
  Arctic airmass will stay in place, prolonging very cold wind 
  chills. Temperatures will gradually rebound midweek next week.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

http://www.weather.gov/afc

862 
WWAK42 PAFC 291205
WSWALU

URGENT - WINTER WEATHER MESSAGE
National Weather Service Anchorage AK
305 AM AKST Mon Jan 29 2024

AKZ155-161-292100-
/O.CON.PAFC.WC.Y.0002.000000T0000Z-240129T2100Z/
Kuskokwim Delta-Bristol Bay-
Including the cities of Bethel, Nunivak Island, King Salmon, 
Dillingham, Naknek, and Pilot Point
305 AM AKST Mon Jan 29 2024

...WIND CHILL ADVISORY REMAINS IN EFFECT UNTIL NOON AKST TODAY...

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

* WHERE...Kuskokwim Delta and Bristol Bay.

* WHEN...Until noon AKST today.

* IMPACTS...The dangerously cold wind chills could cause 
  frostbite on exposed skin in as little as 5 minutes.

* ADDITIONAL DETAILS...An extremely cold Arctic airmass remains 
  in place over Southwest Alaska. The Kuskokwim Delta and Bristol 
  Bay have observed frigid wind chills at or below -40. As winds 
  lightly diminish through the end of the weekend, the Arctic 
  airmass will stay in place, prolonging very cold wind chills. 
  Temperatures will gradually rebound midweek next week.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

http://www.weather.gov/afc

536 
WWAK42 PAFC 291958
WSWALU

URGENT - WINTER WEATHER MESSAGE
National Weather Service Anchorage AK
1058 AM AKST Mon Jan 29 2024

AKZ155-161-300600-
/O.EXT.PAFC.WC.Y.0002.000000T0000Z-240130T0600Z/
Kuskokwim Delta-Bristol Bay-
Including the cities of Bethel, Nunivak Island, King Salmon, 
Dillingham, Naknek, and Pilot Point
1058 AM AKST Mon Jan 29 2024

...WIND CHILL ADVISORY NOW IN EFFECT UNTIL 9 PM AKST THIS
EVENING...

* WHAT...Very cold wind chills occurring. Wind chills as low as 
  50 below zero.

* WHERE...Kuskokwim Delta and Bristol Bay.

* WHEN...Until 9 PM AKST this evening.

* IMPACTS...The dangerously cold wind chills could cause 
  frostbite on exposed skin in as little as 5 minutes.

* ADDITIONAL DETAILS...An extremely cold Arctic airmass remains in
  place over Southwest Alaska. The Kuskokwim Delta and Bristol Bay
  have observed frigid wind chills at or below -40. Winds will
  slowly diminish through this evening, but the Arctic airmass
  will stay in place, prolonging very cold temperatures through
  Tuesday. Temperatures will then gradually rebound through late
  this week.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

http://www.weather.gov/afc

341 
WWAK42 PAFC 300427
WSWALU

URGENT - WINTER WEATHER MESSAGE
National Weather Service Anchorage AK
727 PM AKST Mon Jan 29 2024

AKZ155-161-300530-
/O.CAN.PAFC.WC.Y.0002.000000T0000Z-240130T0600Z/
Kuskokwim Delta-Bristol Bay-
Including the cities of Bethel, Nunivak Island, King Salmon, 
Dillingham, Naknek, and Pilot Point
727 PM AKST Mon Jan 29 2024

...WIND CHILL ADVISORY IS CANCELLED...

Diminished winds across the Kuskokwim Delta and Bristol Bay have 
brought about an end to the threat for low wind chills. However, 
temperatures will remain cool through the overnight hours.

$$

http://www.weather.gov/afc

Southcentral and Southwest Alaska Forecast Discussion
National Weather Service Anchorage AK
444 PM AKST Thu Jan 25 2024

.SHORT TERM FORECAST SOUTHCENTRAL ALASKA (Days 1 through 3)...

Relatively benign weather will continue through tonight. Areas of
fog may develop in the valleys and low lying areas tonight into
tomorrow morning.

Active weather returns to portions of Southcentral tomorrow.
Primary areas of concern will be the Copper River Basin, eastern
Prince William Sound, and Cordova as a series of low pressure
systems track northwards across the Gulf of Alaska. Longwave
Arctic troughing extends south over much of the western portions
of Southcentral, including the Mat-Su Valleys, Anchorage, the
Kenai Peninsula, and Kodiak Island. The trough looks to be strong
enough to keep the heavy precipitation associated with the Gulf
low(s) from spilling into these regions, however, some light,
localized precipitation is possible. There have been quite a bit
of model inconsistency with these incoming Gulf lows bringing
varying amounts of snowfall to different regions. The most recent
runs are pointing towards a further east track, resulting in a
long duration snowfall with higher amounts along the northern
coast - Cordova, Valdez, Thompson Pass - as well as the Copper
Basin. Three Winter Storm Watches have been issued for heavy snow
and new snow accumulation beginning Friday and lasting through
Sunday night into Monday morning. Eastern Prince William Sound,
including Cordova, could see between 8 and 16 inches of new snow
accumulation, Valdez and Keystone Canyon with 18 to 30 inches
while Thompson Passes could see 28 to 40 inches of new snow. For
the Copper River Basin, the southern portions of the Basin will
see the highest snow amounts, ranging from 18 to 30 inches, and
from Glennallen to Paxon values range from 12 to 24 inches of new
snow. Snow is expected to be heavy and may reduce visibilities at
times.

&&

.SHORT TERM FORECAST SOUTHWEST ALASKA/BERING SEA/ALEUTIANS (Days
1 through 3)...

Upper level high pressure is currently over the Western Aleutians
and continues to slide west as a strong low lingering just south
of the Aleutian Chain weakens through early Friday. Over the
mainland, zonal flow predominates through Friday morning. Skies
will remain mostly clear across Southwest into portions of
Southcentral and the eastern Bering sea as cold air remains in
place with offshore flow.

An upper level trough will develop over the mainland interior
dipping into Southwest Friday afternoon. This will open the door
for more cold air advection and increasing winds to the end of
this week. Winds may become more northerly as the trough deepens
southward, and increase up to gale force. With the cold air
advection, winds could become gusty through susceptible terrain
gaps. Confidence remains low with regards to precise wind speed
and temperature values due to variations between model runs,
however, there is moderate to high confidence for frigid
temperatures and higher wind by Friday. Wind chill temperatures
over much of Southwest is likely to dip into the minus 40 to minus
50 degrees Fahrenheit range. In the lower Kuskokwim Valley wind
chill temperatures may reach minus 50 to minus 60 Fahrenheit.
Heavy freezing spray will consequently return toward the end of
the week with ice accretion of at least 4 cm per hour near the ice
edge in the eastern Bering beginning as soon as after midnight
into Friday morning, potentially lasting into next week.

As cold air moves over relatively warmer sea surface temperatures
and winds increase from the north, ocean effect snow showers
could develop across the Bering Sea and becoming more prominent as
yet another embedded trough develops in the north Bering and
reinforces cold air southward for Saturday. Blowing snow and
reduced visibility could become an issue with the snow showers
moving across the Pribilofs, the eastern Aleutians, and the Alaska
Peninsula.

&&

.LONG TERM FORECAST (Days 4 through 7: Saturday through
Tuesday)...

The beginning of the weekend will see a trough developing over
central/western Alaska. With the north-south alignment of the
trough, hazardous cold temperatures are possible along the western
portion of the trough, extending into portions of southwest
Alaska. These conditions would persist through the weekend, but
are possible to extend into early next week. With an increasing
pressure gradient forming through the Bering, strong gap winds
across the western Aleutian islands are currently projected during
the weekend.

Through the end of the weekend into early next week, uncertainty
remains on the potential of shortwaves forming in the eastern Gulf
of Alaska, as well as their track. Presently, a series of
shortwaves are expected to provide increased precipitation along
the Alaska Panhandle and will stretch as far west as the eastern
portions of Prince William Sound. Previous model guidance had the
majority of the heavy precipitation primarily along the Alaska
Panhandle, but there are some trends that are starting to suggest
more precipitation closer to Southcentral. Increased model
agreement closer to the event will help with the confidence of
this forecast in the coming days. Additionally, regardless of the
exact location of the trough and shortwaves, gap winds are likely
with this system. The main region of increased gap winds will
extend from the eastern Bering to the western portions of Cook
Inlet and the Alaska Range. Overall, the positioning of the trough
over Alaska in the coming days will play a significant role in
the placement of strong winds and heavy precipitation throughout
the weekend and early next week.

BS

&&

.AVIATION...

PANC...Light northerly winds will continue. Periods of low
visibility (mostly MVFR but may drop to IFR at times) and cloud
ceilings dropping below 300 ft is expected through the overnight
hours with areas of vicinity fog. Conditions should improve
through the morning hours.

&&