Wind Chill Watch 1, NWS Juneau, AK

412 
WWAK47 PAJK 070507
WSWAJK

URGENT - WINTER WEATHER MESSAGE
National Weather Service Juneau AK
807 PM AKST Sat Feb 6 2021

AKZ018-071800-
/O.CON.PAJK.WC.Y.0004.000000T0000Z-210209T0900Z/
/O.CON.PAJK.WC.A.0001.210209T0900Z-210209T1900Z/
Taiya Inlet and Klondike Highway-
Including the city of Skagway
807 PM AKST Sat Feb 6 2021

...WIND CHILL ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT AKST
MONDAY NIGHT...
...WIND CHILL WATCH REMAINS IN EFFECT FROM LATE MONDAY NIGHT
THROUGH TUESDAY MORNING...

* WHAT...For the Wind Chill Advisory, very cold wind chills 
  expected. Wind chills of around 35 below zero falling to 
  around 45 below zero. For the Wind Chill Watch, dangerously 
  cold wind chills possible. Wind chills as low as 55 below zero.

* WHERE...Klondike Highway near White Pass.

* WHEN...For the Wind Chill Advisory, until midnight AKST Monday 
  night. For the Wind Chill Watch, from late Monday night 
  through Tuesday morning.

* IMPACTS...The dangerously cold wind chills could cause 
  frostbite on exposed skin in as little as 10 minutes.

* ADDITIONAL DETAILS...Temperatures will become colder each day 
  through Tuesday while winds remain steady or increasing.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Monitor the latest forecasts for updates on this situation.

&&

$$

http://www.weather.gov/juneau

781 
WWAK47 PAJK 071743
WSWAJK

URGENT - WINTER WEATHER MESSAGE
National Weather Service Juneau AK
843 AM AKST Sun Feb 7 2021

AKZ018-080545-
/O.CON.PAJK.WC.Y.0004.000000T0000Z-210209T0900Z/
/O.CON.PAJK.WC.A.0001.210209T0900Z-210209T1900Z/
Taiya Inlet and Klondike Highway-
Including the city of Skagway
843 AM AKST Sun Feb 7 2021

...WIND CHILL ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT AKST
MONDAY NIGHT...
...WIND CHILL WATCH REMAINS IN EFFECT FROM LATE MONDAY NIGHT
THROUGH TUESDAY MORNING...

* WHAT...For the Wind Chill Advisory, very cold wind chills 
  expected. Wind chills of around 30 below zero falling to 
  around 45 below zero. For the Wind Chill Watch, dangerously 
  cold wind chills possible. Wind chills as low as 55 below zero.

* WHERE...Klondike Highway near White Pass.

* WHEN...For the Wind Chill Advisory, until midnight AKST Monday 
  night. For the Wind Chill Watch, from late Monday night 
  through Tuesday morning.

* IMPACTS...The dangerously cold wind chills could cause 
  frostbite on exposed skin in as little as 10 minutes.

* ADDITIONAL DETAILS...Temperatures will become colder each day 
  through Tuesday while winds remain steady or increasing.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Monitor the latest forecasts for updates on this situation.

&&

$$

http://www.weather.gov/juneau

870 
WWAK47 PAJK 080531
WSWAJK

URGENT - WINTER WEATHER MESSAGE
National Weather Service Juneau AK
831 PM AKST Sun Feb 7 2021

AKZ018-081800-
/O.CON.PAJK.WC.Y.0004.000000T0000Z-210209T0900Z/
/O.CON.PAJK.WC.A.0001.210209T0900Z-210209T1900Z/
Taiya Inlet and Klondike Highway-
Including the city of Skagway
831 PM AKST Sun Feb 7 2021

...WIND CHILL ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT AKST
MONDAY NIGHT...
...WIND CHILL WATCH REMAINS IN EFFECT FROM LATE MONDAY NIGHT
THROUGH TUESDAY MORNING...

* WHAT...For the Wind Chill Advisory, very cold wind chills 
  expected. Wind chills of around 30 below zero falling to 
  around 45 below zero. For the Wind Chill Watch, dangerously 
  cold wind chills possible. Wind chills as low as 55 below zero.

* WHERE...Klondike Highway near White Pass.

* WHEN...For the Wind Chill Advisory, until midnight AKST Monday 
  night. For the Wind Chill Watch, from late Monday night 
  through Tuesday morning.

* IMPACTS...The dangerously cold wind chills could cause 
  frostbite on exposed skin in as little as 10 minutes.

* ADDITIONAL DETAILS...Temperatures will become colder each day 
  through Tuesday while winds remain steady or increasing.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Monitor the latest forecasts for updates on this situation.

&&

$$

http://www.weather.gov/juneau

685 
WWAK47 PAJK 081440
WSWAJK

URGENT - WINTER WEATHER MESSAGE
National Weather Service Juneau AK
540 AM AKST Mon Feb 8 2021

AKZ018-090000-
/O.UPG.PAJK.WC.A.0001.210209T0900Z-210209T1900Z/
/O.NEW.PAJK.WC.W.0001.210209T0900Z-210209T1800Z/
/O.CON.PAJK.WC.Y.0004.000000T0000Z-210209T0900Z/
Taiya Inlet and Klondike Highway-
Including the city of Skagway
540 AM AKST Mon Feb 8 2021

...WIND CHILL ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT AKST
TONIGHT...
...WIND CHILL WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM
AKST TUESDAY...

* WHAT...For the Wind Chill Warning, dangerously cold wind chills
  expected near White Pass. Wind chills as low as 60 below zero. 
  For the Wind Chill Advisory, very cold wind chills. Wind chills 
  as low as 50 below zero.

* WHERE...Taiya Inlet and Klondike Highway.

* WHEN...For the Wind Chill Warning, from midnight Monday night to
  9 AM AKST Tuesday. For the Wind Chill Advisory, until midnight
  AKST Monday night.

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

* ADDITIONAL DETAILS...Wind chill values of 30 below zero or
  colder are expected in Skagway from midnight Monday night
  through Tuesday morning. Advisory level wind chills are expected
  to continue after the warning expires along the Klondike
  Highway.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Avoid outside activities if possible. When outside, make sure you 
wear appropriate clothing, and cover all exposed skin.

&&

$$

AKZ019-090000-
/O.EXB.PAJK.WC.Y.0004.210209T0600Z-210209T2100Z/
Haines Borough and Lynn Canal-
Including the city of Haines
540 AM AKST Mon Feb 8 2021

...WIND CHILL ADVISORY IN EFFECT FROM 9 PM THIS EVENING TO NOON
AKST TUESDAY...

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

* WHERE...Haines Borough and Haines Highway.

* WHEN...From 9 PM Monday evening to noon AKST Tuesday.

* IMPACTS...The dangerously cold wind chills could cause 
  frostbite on exposed skin in as little as 10 minutes.

* ADDITIONAL DETAILS...Temperatures will become colder on Tuesday
  while winds remain steady or increase.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Use caution while traveling outside. Wear appropriate clothing and
cover all exposed skin. 

&&

$$

http://www.weather.gov/juneau

Southeast Alaska Forecast Discussion
National Weather Service Juneau AK
252 PM AKST Sat Feb 6 2021

.SHORT TERM...An inverted trough extending northward along the
eastern gulf to Yakutat is causing some clouds and lingering
showers today. These will continue to shift southward through the
evening, making for partly cloudy to mostly clear skies for much
of the area. Building high pressure over the Yukon has already
started to ramp up outflow winds through the northern inner
channels with gale force winds observed at Eldred Rock. This is
brining in colder air and the clearing skies will make lows even
colder due to radiational cooling.

The Canadian high pressure will continue to build through the
beginning of next week, becoming extreme +1050mb predicted by all
models for the northern Yukon by Monday. For comparison, the Juneau
airport is reporting 1025mb attm, which is relatively high for
our area. That pressure (and dry airmass) can already be felt by
the body today and will only be stronger with each passing day.
Expect the N-NE winds to increase even more on Monday with the
typical outflow and mountain wave areas likely seeing strong
gusts. These will progressively advect in colder temperatures with
each passing day too, meaning wind chill. White Pass was already
as cold as -11F ambient temperature today and if just 15mph winds
are present, that equates to a -33F wind chill. For this reason,
expect cold wind chills to continue through Monday, then may even
hit the watch/warning level of -55F Monday night.

The outflow will cause some ocean effect clouds and snow showers
over the outside waters. There is potential for the ocean effect
clouds to extend over nearby land areas. Have seen this happen
even on the inside waters due to the outflow coming out of Lynn
Canal getting moisture off the water, then rising and forming the
clouds as it hits the land of Eastern Chichagof Island. Will have
to monitor the ocean effect clouds as they form with satellite
and adjust accordingly over the next few days.

.LONG TERM.../Monday through Saturday night/ As of Friday
evening. Models have continued to back off on the Monday system as
additional data has become available. It is looking increasingly
likely that the outflow from cold air surging out of the north
will be sufficient to keep the panhandle dry, though some cloud
cover, and perhaps the passing chance of some snow for coastal
areas. The big story will be the cold. Driven by a large area of
high pressure in the Yukon, cold air will surge out of various
passes and into the panhandle itself. This will see temperatures
steadily falling across the area from Monday onwards, with Tuesday
night into Wednesday morning likely to see some of the coldest
weather that this winter has brought to SE Alaska thus far. Given
the corresponding northerly outflow, windchill in some areas could
also become fairly impressive, particularly in Haines and Skagway
and along their respective highways. After Wednesday, ensemble
guidance diverges, although a trend towards warming temperatures
through the second half of next week has been emerging. Overall
forecast confidence is average.

&&

.AJK WATCHES/WARNINGS/ADVISORIES...
PUBLIC...Wind Chill Watch from late Monday night through Tuesday morning
     for AKZ018.
     Wind Chill Advisory until midnight AKST Monday night for AKZ018.
MARINE...Gale Warning for PKZ012.
     Small Craft Advisory for PKZ013-022-031-041>043-051-052.

&&

Ferrin/GFS

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