Wind Chill Advisory 2, NWS Anchorage, AK

473 
WWAK42 PAFC 251312
WSWALU

URGENT - WINTER WEATHER MESSAGE
National Weather Service Anchorage AK
412 AM AKST Thu Jan 25 2018

AKZ155-260215-
/O.CON.PAFC.WC.Y.0002.180126T0300Z-180126T2100Z/
Kuskokwim Delta-
Including the cities of Bethel, Hooper Bay, and Nunivak Island
412 AM AKST Thu Jan 25 2018

...WIND CHILL ADVISORY REMAINS IN EFFECT FROM 6 PM THIS EVENING
TO NOON AKST FRIDAY FOR INLAND AREAS...

* WHAT...Very cold wind chills expected. The cold wind chills will
  cause frostbite in as little as 30 minutes to exposed skin.
  Expect wind chills to range from 35 below zero to 50 below 
  zero.

* WHERE...Inland portions of the Kuskokwim Delta including Bethel.

* WHEN...6 PM this evening to noon Friday.

* ADDITIONAL DETAILS...Winds will increase this afternoon as the
  core of coldest air over interior Alaska makes its way into the
  area. Wind chills during the evening will fall to 40 below early
  this evening, continuing to fall to as low as 50 below 
  overnight. Winds will remain elevated throughout Friday as 
  temperatures gradually rise.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Wind Chill Advisory means that cold air and the wind will
combine to create low wind chills. Frost bite and hypothermia can
occur if precautions are not taken. Make sure you wear a hat and
gloves.

$$

http://www.weather.gov/afc

448 
WWAK42 PAFC 260059
WSWALU

URGENT - WINTER WEATHER MESSAGE
National Weather Service Anchorage AK
359 PM AKST Thu Jan 25 2018

AKZ155-261400-
/O.CON.PAFC.WC.Y.0002.180126T0300Z-180126T2100Z/
Kuskokwim Delta-
Including the cities of Bethel, Hooper Bay, and Nunivak Island
359 PM AKST Thu Jan 25 2018

...WIND CHILL ADVISORY REMAINS IN EFFECT UNTIL NOON AKST FRIDAY
INLAND AREAS...

* WHAT...Very cold wind chills expected. The cold wind chills will
  cause frostbite in as little as 30 minutes to exposed skin.
  Expect wind chills to range from 30 below zero to 45 below 
  zero.

* WHERE...Kuskokwim Delta.

* WHEN...6 PM this evening to noon Friday.

* ADDITIONAL DETAILS...Winds will increase this afternoon and
  evening as the core of coldest air over interior Alaska makes 
  its way into the area. Wind chills during the evening will fall 
  to 30 below, continuing to fall to as low as 45 below overnight.
  Winds will remain elevated throughout Friday as temperatures 
  gradually rise.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Wind Chill Advisory means that cold air and the wind will
combine to create low wind chills. Frost bite and hypothermia can
occur if precautions are not taken. Make sure you wear a hat and
gloves.

$$

http://www.weather.gov/afc

843 
WWAK42 PAFC 260101 CCA
WSWALU

URGENT - WINTER WEATHER MESSAGE...CORRECTED
National Weather Service Anchorage AK
401 PM AKST Thu Jan 25 2018

AKZ155-261400-
/O.COR.PAFC.WC.Y.0002.180126T0300Z-180126T2100Z/
Kuskokwim Delta-
Including the cities of Bethel, Hooper Bay, and Nunivak Island
401 PM AKST Thu Jan 25 2018

...WIND CHILL ADVISORY REMAINS IN EFFECT UNTIL NOON AKST FRIDAY
FOR INLAND AREAS...

* WHAT...Very cold wind chills expected. The cold wind chills will
  cause frostbite in as little as 30 minutes to exposed skin.
  Expect wind chills to range from 30 below zero to 45 below 
  zero.

* WHERE...Inland areas of the Kuskokwim Delta including Bethel.

* WHEN...6 PM this evening to noon Friday.

* ADDITIONAL DETAILS...Winds will increase this afternoon and
  evening as the core of coldest air over interior Alaska makes 
  its way into the area. Wind chills during the evening will fall 
  to 30 below, continuing to fall to as low as 45 below overnight.
  Winds will remain elevated throughout Friday as temperatures 
  gradually rise.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Wind Chill Advisory means that cold air and the wind will
combine to create low wind chills. Frost bite and hypothermia can
occur if precautions are not taken. Make sure you wear a hat and
gloves.

$$

http://www.weather.gov/afc

078 
WWAK42 PAFC 261307
WSWALU

URGENT - WINTER WEATHER MESSAGE
National Weather Service Anchorage AK
407 AM AKST Fri Jan 26 2018

AKZ161-262100-
/O.EXA.PAFC.WC.Y.0002.000000T0000Z-180126T2100Z/
Bristol Bay-
Including the cities of King Salmon, Dillingham, Naknek, 
and Pilot Point
407 AM AKST Fri Jan 26 2018

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

* WHAT...Very cold wind chills expected. The cold wind chills will
  cause frostbite in as little as 30 minutes to exposed skin.
  Expect wind chills to range from 30 below zero to 45 below 
  zero.

* WHERE...Bristol Bay.

* WHEN...Until noon today.

* ADDITIONAL DETAILS...Cold temperatures and gusty north winds
  will combine to produce wind chill values as low as 45 below
  zero through this morning. Conditions will gradually improve
  during the afternoon as temperatures begin to rise.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Wind Chill Advisory means that cold air and the wind will
combine to create low wind chills. Frost bite and hypothermia can
occur if precautions are not taken. Make sure you wear a hat and
gloves.

$$

AKZ155-262100-
/O.CON.PAFC.WC.Y.0002.000000T0000Z-180126T2100Z/
Kuskokwim Delta-
Including the cities of Bethel, Hooper Bay, and Nunivak Island
407 AM AKST Fri Jan 26 2018

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

* WHAT...Very cold wind chills expected. The cold wind chills will
  cause frostbite in as little as 30 minutes to exposed skin.
  Expect wind chills to range from 30 below zero to 45 below 
  zero.

* WHERE...Kuskokwim Delta.

* WHEN...Until noon today.

* ADDITIONAL DETAILS...Cold temperatures and gusty north winds
  will combine to produce wind chill values as low as 45 below
  zero through this morning. Conditions will gradually improve
  during the afternoon as temperatures begin to rise.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Wind Chill Advisory means that cold air and the wind will
combine to create low wind chills. Frost bite and hypothermia can
occur if precautions are not taken. Make sure you wear a hat and
gloves.

$$

http://www.weather.gov/afc

192 
WWAK42 PAFC 261717
WSWALU

URGENT - WINTER WEATHER MESSAGE
National Weather Service Anchorage AK
817 AM AKST Fri Jan 26 2018

AKZ181-270300-
/O.NEW.PAFC.BZ.W.0002.180126T1717Z-180127T0300Z/
Alaska Peninsula-
Including the cities of Cold Bay and Sand Point
817 AM AKST Fri Jan 26 2018

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

* WHAT...Blizzard conditions occurring. Travel will be very 
  difficult. Expect damage to trees and power lines as well. 
  Additional snow accumulations of up to two inches are expected.

* WHERE...Alaska Peninsula.

* WHEN...Until 6 PM today.

* ADDITIONAL DETAILS...Winds gusting as high as 65 mph will 
  cause whiteout conditions in blowing snow. Significant 
  drifting of the snow is likely.

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 very hazardous. If you must travel,
have a winter survival kit with you.If you get stranded, stay
with your means of transportation.

$$

AKZ155-161-262000-
/O.EXT.PAFC.WC.Y.0002.000000T0000Z-180126T2000Z/
Kuskokwim Delta-Bristol Bay-
Including the cities of Bethel, Hooper Bay, Nunivak Island, 
King Salmon, Dillingham, Naknek, and Pilot Point
817 AM AKST Fri Jan 26 2018

...WIND CHILL ADVISORY NOW IN EFFECT UNTIL 11 AM AKST THIS
MORNING...

* WHAT...Very cold wind chills expected. The cold wind chills 
  will cause frostbite in as little as 30 minutes to exposed 
  skin. Expect wind chills to range from 20 below zero to 45 
  below zero.

* WHERE...Kuskokwim Delta and Bristol Bay.

* WHEN...Now to 11 AM this morning.

* ADDITIONAL DETAILS...Cold temperatures and gusty north winds
  will combine to produce wind chill values as low as 45 below
  zero through this morning. Conditions will gradually improve
  during the afternoon as temperatures begin to rise..

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Wind Chill Advisory means that cold air and the wind will
combine to create low wind chills. Frost bite and hypothermia can
occur if precautions are not taken. Make sure you wear a hat and
gloves.

$$

http://www.weather.gov/afc

Southcentral and Southwest Alaska Forecast Discussion
National Weather Service Anchorage AK
421 AM AKST Wed Jan 24 2018

.ANALYSIS AND UPPER LEVELS...
A large upper level ridge continues to persist over the Bering and
Aleutians while the deep arctic trough/upper level low centered
over mainland Alaska continues to dig slowly south keeping a very
cold, low level air mass entrenched over Southwest Alaska. The
deformation band which had been bringing snow to southcentral
Alaska has weakened significantly with snow tapering to isolated
to scattered showers and now mainly lingering along the Chugach
and Talkeetna Mountains. Northwesterly outflow winds continue from
the Alaska Peninsula over Kodiak Island and through all the
typical offshore flow gaps along the Gulf Coast and southcentral
Alaska.

&&

.MODEL DISCUSSION...
Models remain in very good agreement on the persistent large scale
blocking pattern continuing to bring cold conditions to mainland
Alaska. Smaller scale differences do continue, however in the
details of the troughs/surface lows rotating around the periphery
of the Gulf.

&&

.AVIATION...
PANC...With snow showers having tapered off and shifted east
early this morning, conditions should remain predominantly VFR at
PANC through the period. Occasional snow flurries are still
possible however as an upper level trough swings through this
afternoon and evening.

&&

.SHORT TERM FORECAST SOUTHCENTRAL ALASKA (Days Today and Thursday)...
Gale to storm force outflow winds will continue over the western
Gulf through Thursday as cold air continues to spill through gaps
in the Aleutian Range. Winds will ramp up some tonight then peak
on Thursday as the upper low dropping south across Southcentral
provides favorable jet support. Winds should diminish some
Thursday night as upper support wanes. Elsewhere, gap and outflow
winds are expected to continue across much of the North Gulf
Coast/Eastern Kenai into Thursday. Outflow winds should start to
diminish in these areas later Thursday as upper support weakens.

The threat of light snow or flurries will likely continue west of
the Chugach through tonight as the upper low center drops south
across the area. As the flow aloft becoming more easterly across
the Gulf, surface lows heading northwest across the Gulf will
spread moisture and increased chances of snow to the North Gulf
Coast and Eastern Kenai Peninsula Thursday/Thursday night.

&&

.SHORT TERM FORECAST SOUTHWEST ALASKA (Days 1 and 2)...
The advance of a strong upper level low just east of the area and
its associated bitterly cold air continues across Southwest Alaska
this morning. This pattern will persist over the southwest
Mainland through the end of the week, keeping clear and cold
conditions over the area. Temperatures are running anywhere from
15 to 25 degrees below normal area-wide. Fortunately the winds
will remain light in most areas away from the coast, so once again
any wind chill concerns should remain localized to interior
windier locations north and west of Iliamna.

Towards the coast, temperatures are slightly warmer, and so the
slightly stronger winds should still keep wind chills shy of
advisory criteria. The only precipitation concerns will be
confined to the immediate Kuskokwim Delta coast and Nunivak Island
through early this evening, as a fast-moving impulse of moisture
tracks over the area from the northern Bering, though any snow
that falls will be light. Thursday into Friday, the upper level
low tracks along the Alaska Range and in its wake is a slight
warming trend in temperatures back toward normal.

&&

.SHORT TERM FORECAST BERING SEA/ALEUTIANS (Days 1 and 2)...
A broad warm ridge and associated surface high pressure centered
over the central Aleutians continues to dominate most of the
Bering's weather, except near the coast and the far western
Bering. The coast is the transition zone to the deep polar air
over the state. Meanwhile out west, another very deep low
southwest of the Kamchatka Peninsula will continue to build the
ridge northward. The building ridge over the Bering will very
effectively block the active weather over the far western Bering
from impacting any more of the area.

Besides the occasional weak impulse of energy rapidly tracking
southbound across the eastern Bering into the Alaska Peninsula,
the remainder of the area will remain under a mix of sun and
clouds as much of the stratus erodes. Conditions will deteriorate
Thursday night into Friday over the western Bering and Aleutians
as a front moves over the area and stalls.

&&

.LONG TERM FORECAST (Days 3 through 7)...
Beginning the extended period forecast Thursday night, a deep
arctic vortex will be moving south over Kodiak Island and then
into the Western Gulf of Alaska by Friday morning. A very cold air
mass will be in place, especially over Southwest Alaska as the
cold air takes the path of least resistance around the Alaska
Range into the Bering Sea. The tricky forecast at this juncture
will be over Southcentral as the eastern periphery of the
aforementioned upper vortex will be advecting a warmer air mass
towards the coast (although still cold enough for all snow). This
will bring snow chances to all of the North Gulf Coast (and
potentially into some inland locales near the coast) and Kodiak
Island. The low quickly digs south with snow chances moving south
with the low so that by Sunday all of Southern Alaska will be dry
as cold high pressure settles in.

The high latitude blocking high is still expected to develop
somewhere over Eastern Siberia and the northwest Bering Sea which
will continue a northerly flow pattern aloft over Southern Alaska
along with continued dry and cold through Tuesday. At this
juncture, the numerical model guidance falls apart as the high
latitude block shears the mainland trough and upper level energy
splits over the North Pacific. However, this model discrepancy
really does not significantly impact the sensible weather over the
region, so expect continued cold and largely dry weather into the
midweek period.

&&

.AFC WATCHES/WARNINGS/ADVISORIES...
PUBLIC...None.
MARINE...Gale Warning 120 121 127 129 131 132 136 138 150 178
         Storm Warning 130
         Heavy Freezing Spray Warning 121 126 127 128 129 130 131
            132 136 137 138 139 141 160 180

&&

SYNOPSIS AND MODEL DISCUSSION...JER
SOUTHCENTRAL ALASKA...BC
SOUTHWEST ALASKA/BERING SEA/ALEUTIANS...TP
LONG TERM...JA