High Wind Watch 13, NWS Juneau, AK

970 
WWAK77 PAJK 220102
NPWAJK

URGENT - WEATHER MESSAGE
National Weather Service Juneau AK
402 PM AKST Mon Dec 21 2020

AKZ027-028-221500-
/O.EXB.PAJK.HW.A.0013.201223T1200Z-201223T1800Z/
Dixon Entrance to Cape Decision Coastal Area-
Southern Inner Channels-
Including the cities of Craig, Klawock, Ketchikan, and Metlakatla
402 PM AKST Mon Dec 21 2020

...HIGH WIND WATCH IN EFFECT FROM LATE TUESDAY NIGHT THROUGH
WEDNESDAY MORNING...

* WHAT...Southeast winds 25 to 35 mph with gusts up to 60 mph 
  possible.

* WHERE...Dixon Entrance to Cape Decision Coastal Area and
  Southern Inner Channels, including Craig, Hydaburg, Ketchikan,
  and Metlakatla.

* WHEN...From late Tuesday night through Wednesday morning.

* IMPACTS...Damaging winds could blow down trees and power lines.
  Travel could be difficult, especially for high profile 
  vehicles.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Monitor the latest forecasts and warnings for updates on this
situation. Fasten loose objects or shelter objects in a safe
location prior to the onset of winds.

&&

$$

AKZ025-221500-
/O.CON.PAJK.HW.A.0013.201223T0300Z-201223T1800Z/
Juneau Borough and Northern Admiralty Island-
Including the city of Juneau
402 PM AKST Mon Dec 21 2020

...HIGH WIND WATCH REMAINS IN EFFECT FROM TUESDAY EVENING THROUGH
WEDNESDAY MORNING...

* WHAT...Southeast winds 30 to 40 mph with gusts up to 60 mph 
  possible.

* WHERE...Juneau.

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

* IMPACTS...Damaging winds could blow down trees and power lines. Travel
  could be difficult, especially for high profile vehicles.

* ADDITIONAL DETAILS...Highest winds are most likely late Tuesday
  night and early Wednesday morning.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Monitor the latest forecasts and warnings for updates on this
situation. Fasten loose objects or shelter objects in a safe
location prior to the onset of winds.

&&

$$

AKZ017-022-023-221500-
/O.CON.PAJK.HW.A.0013.201223T0300Z-201223T1500Z/
Cape Fairweather to Cape Suckling Coastal Area-
Salisbury Sound to Cape Fairweather Coastal Area-
Cape Decision to Salisbury Sound Coastal Area-
Including the cities of Yakutat, Elfin Cove, Pelican, Sitka, 
and Port Alexander
402 PM AKST Mon Dec 21 2020

...HIGH WIND WATCH REMAINS IN EFFECT FROM TUESDAY EVENING THROUGH
LATE TUESDAY NIGHT...

* WHAT...Southeast winds 25 to 40 mph with gusts up to 60 mph 
  possible.

* WHERE...The northeast and eastern Gulf Coast including Sitka,
  Yakutat, Port Alexander, Elfin Cove, and Pelican.

* WHEN...From Tuesday evening through late Tuesday night.

* IMPACTS...Damaging winds could blow down trees and power 
  lines. Widespread power outages are possible. Travel could be 
  difficult, especially for high profile vehicles.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Monitor the latest forecasts and warnings for updates on this
situation. Fasten loose objects or shelter objects in a safe
location prior to the onset of winds.

&&

$$

For more information from the National Weather Service visit
https://weather.gov/ajk

374 
WWAK77 PAJK 221448
NPWAJK

URGENT - WEATHER MESSAGE
National Weather Service Juneau AK
548 AM AKST Tue Dec 22 2020

AKZ025-221600-
/O.CAN.PAJK.HW.A.0013.201223T0300Z-201223T1800Z/
Juneau Borough and Northern Admiralty Island-
Including the city of Juneau
548 AM AKST Tue Dec 22 2020

...HIGH WIND WATCH IS CANCELLED...

Winds will be very strong Tuesday night with gusts around 50 mph.
However, we no longer expect wind speeds to reach or exceed 60
mph.

$$

AKZ017-022-023-230100-
/O.UPG.PAJK.HW.A.0013.201223T0300Z-201223T1500Z/
/O.NEW.PAJK.HW.W.0024.201223T0300Z-201223T1500Z/
Cape Fairweather to Cape Suckling Coastal Area-
Salisbury Sound to Cape Fairweather Coastal Area-
Cape Decision to Salisbury Sound Coastal Area-
Including the cities of Yakutat, Elfin Cove, Pelican, Sitka, 
and Port Alexander
548 AM AKST Tue Dec 22 2020

...HIGH WIND WARNING IN EFFECT FROM 6 PM THIS EVENING TO 6 AM
AKST WEDNESDAY...

* WHAT...Southeast winds 25 to 35 mph with gusts around 60 mph 
  expected.

* WHERE...The Northeast and Eastern Gulf Coast including Sitka,
  Yakutat, Port Alexander, Elfin Cove, and Pelican.

* WHEN...From 6 PM this evening to 6 AM AKST Wednesday.

* IMPACTS...Damaging winds could blow down trees and power lines.
  Power outages are possible. Travel will be difficult. Loose
  objects, including outdoor holiday decorations could be blown 
  around in the wind.

* ADDITIONAL DETAILS...High wind gusts could occur anytime during
  the warning period. However, the highest likelihood of 
  occurrence is late in the evening through 5 AM Wednesday.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

People should avoid being outside in forested areas and around
trees and branches. Use caution if you must drive.

&&

$$

AKZ027-028-230100-
/O.CON.PAJK.HW.A.0013.201223T1200Z-201223T1800Z/
Dixon Entrance to Cape Decision Coastal Area-
Southern Inner Channels-
Including the cities of Craig, Klawock, Ketchikan, and Metlakatla
548 AM AKST Tue Dec 22 2020

...HIGH WIND WATCH REMAINS IN EFFECT FROM LATE TONIGHT THROUGH
WEDNESDAY MORNING...

* WHAT...Southeast winds 25 to 35 mph with gusts up to 60 mph 
  possible.

* WHERE...The Southeast Gulf Coast and the Southern Inner Channels
  including Ketchikan, Hydaburg, Metlakatla, Craig, Hollis, Thorne
  Bay, and Klawock.

* WHEN...From late tonight through Wednesday morning.

* IMPACTS...Damaging winds could blow down trees and power lines.
  Widespread power outages are possible. Travel could be difficult.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Monitor the latest forecasts and warnings for updates on this
situation. Fasten loose objects or shelter objects in a safe
location prior to the onset of winds.

&&

$$

For more information from the National Weather Service visit
https://weather.gov/ajk

462 
WWAK77 PAJK 230030
NPWAJK

URGENT - WEATHER MESSAGE
National Weather Service Juneau AK
330 PM AKST Tue Dec 22 2020

AKZ027-231500-
/O.UPG.PAJK.HW.A.0013.201223T1200Z-201223T1800Z/
/O.EXB.PAJK.HW.W.0024.201223T0900Z-201223T1800Z/
Dixon Entrance to Cape Decision Coastal Area-
Including the cities of Craig and Klawock
330 PM AKST Tue Dec 22 2020

...HIGH WIND WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM AKST
WEDNESDAY...

* WHAT...Southeast winds 25 to 35 mph with gusts up to 60 mph
  expected.

* WHERE...Dixon Entrance to Cape Decision Coastal Area, including
  Craig and Hydaburg.

* WHEN...From midnight tonight to 9 AM AKST Wednesday.

* IMPACTS...Damaging winds could blow down trees and power lines.
  Travel could be difficult. Loose objects, including outdoor
  holiday decorations could be blown around in the wind.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

People should avoid being outside in forested areas and around
trees and branches. If possible, remain in the lower levels of
your home during the windstorm, and avoid windows. Use caution if
you must drive.

&&

$$

AKZ028-231500-
/O.UPG.PAJK.HW.A.0013.201223T1200Z-201223T1800Z/
/O.EXB.PAJK.HW.W.0024.201223T1200Z-201223T2100Z/
Southern Inner Channels-
Including the cities of Ketchikan and Metlakatla
330 PM AKST Tue Dec 22 2020

...HIGH WIND WARNING IN EFFECT FROM 3 AM TO NOON AKST WEDNESDAY...

* WHAT...Southeast winds 25 to 35 mph with gusts up to 65 mph
  expected.

* WHERE...Southern Inner Channels, including Ketchikan and
  Metlakatla.

* WHEN...From 3 AM to noon AKST Wednesday.

* IMPACTS...Damaging winds could blow down trees and power lines.
  Travel could be difficult. Loose objects, including outdoor 
  holiday decorations could be blown around in the wind.

* ADDITIONAL DETAILS...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

People should avoid being outside in forested areas and around
trees and branches. If possible, remain in the lower levels of
your home during the windstorm, and avoid windows. Use caution if
you must drive.

&&

$$

AKZ017-022-023-231500-
/O.CON.PAJK.HW.W.0024.201223T0300Z-201223T1500Z/
Cape Fairweather to Cape Suckling Coastal Area-
Salisbury Sound to Cape Fairweather Coastal Area-
Cape Decision to Salisbury Sound Coastal Area-
Including the cities of Yakutat, Elfin Cove, Pelican, Sitka, 
and Port Alexander
330 PM AKST Tue Dec 22 2020

...HIGH WIND WARNING REMAINS IN EFFECT FROM 6 PM THIS EVENING TO
6 AM AKST WEDNESDAY...

* WHAT...Southeast winds 25 to 35 mph with gusts around 60 mph 
  expected.

* WHERE...The Northeast and Eastern Gulf Coast including Sitka, 
  Yakutat, Port Alexander, Elfin Cove, and Pelican.

* WHEN...From 6 PM this evening to 6 AM AKST Wednesday.

* IMPACTS...Damaging winds could blow down trees and power 
  lines. Power outages are possible. Travel will be difficult. 
  Loose objects, including outdoor holiday decorations could be 
  blown around in the wind.

* ADDITIONAL DETAILS...High wind gusts could occur anytime during
  the warning period. However, the highest likelihood of
  occurrence is between 9 PM this evening through 3 AM Wednesday.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

People should avoid being outside in forested areas and around
trees and branches. Use caution if you must drive.

&&

$$

For more information from the National Weather Service visit
https://weather.gov/ajk

Southeast Alaska Forecast Discussion
National Weather Service Juneau AK
234 PM AKST Sun Dec 20 2020

.SHORT TERM.../Sunday night through Tuesday night/...Scattered
thunderstorms have been occurring since last night and should
continue though the evening. This convection is supported by cold
air advection moving in from the west. CAPE and Lifted Index values
in the 12Z Yakutat and Annette soundings support convective
activity. Thunderstorms are expected to continue this evening along
the gulf coast from Yakutat to just south of Port Alexander.

As for models, they are in generally good agreement for the short-
term forecast period. The majority of the Panhandle will experience
relatively calm weather until a storm force front approaches the
area for the Tuesday into Wednesday timeframe. Precipitation will be
on the lighter side with showers continuing through Sunday, then
diminishing on Monday. For the southern Panhandle, a waves moving
into this area will increase shower coverage and intensity at times.

Precipitation rates pick up Tuesday into Wednesday as a quick
moving atmospheric river associated with the frontal system slides
through the area. Rainfall amounts around 1 to 2 inches expected
with this next system with higher amounts possible in upslope
favored areas. Forecast Integrated Water Vapor Transport(IVT) values
approach the 700 to 800 kg/(ms) range for the Tuesday into Wednesday
timeframe. This is due to a long fetch of deep moisture from the
central Pacific region being carried toward southeast Alaska. Warm
air advection will be moving toward the Panhandle with this system
keeping the wintry precipitation to a minimum. P-type is expected to
be mainly rain, with the exception of the Haines and Klondike
highways where accumulating snow is likely.

The outside waters, inner channels, and the Panhandle will see windy
conditions with this frontal system due to a tight pressure gradient
between the system and a relatively strong high in British Columbia.
Storm to gale force winds expected in the coastal waters as the
front approaches while small crafts and gales will develop in the
Inner Channels Tuesday into Wednesday. These winds will bring
appreciably higher waves. The associated low will move inland over
south-central Alaska and weaken as the front passes through the
Panhandle after the end of the short-term forecast period.

There is a chance of fog for the Monday evening into Tuesday morning
for the southern Panhandle and areas along the outer coast due to
decreased cloudiness and lighter winds allowing for good radiational
cooling.

.LONG TERM.../ Tuesday to Sunday as of 9 pm Saturday / Long term
timeframe starts with a high amplitude upper level ridge moving
east through the panhandle and then anchoring over western Canada.
This results in a continued southerly becoming more, southwest
direction for the end of the week. In a general sense a broad
upper level trough moves to the western part of the gulf, although
the operations solutions have different ideas where to put the
various upper trough for the weekend.

From a deep (lower 950 mb) parent low over the Bering Sea a
moisture laden front will sweep across the Gulf on Tuesday and
into Southeast Alaska. The front will move through the area
briskly, which will limit rain and or snowfall amounts. This
transitory feature has forecast IVT values that classify it as
weak atmospheric river. The best rainfall amounts expected, at
present west of Yakutat at over 2 inches, while the panhandle
should see 1 to 2 inches of rain.

Across colder sections of northern Lynn Canal this may fall as
snow with potential range of 3 to 12 inches, with the larger
amounts near the Canadian borders. Misty Fjords may be another
area that could see significant snowfall ( up to a foot or so )
Wednesday. Ensembles have fair confidence in this system spread a
better than average precipitation event.

The front on Tuesday will bring Gale to locally Storm force winds
to the outer coastal waters and then diminishing to 15 to 20 kt
by Wednesday.

Late Friday night into the weekend the model agreement continues
to be poor with individual features over the Gulf of Alaska. With
slightly better confidence we can say a broad area of lower
pressure over the gulf will persist through the weekend.

&&

.AJK WATCHES/WARNINGS/ADVISORIES...
PUBLIC...Strong Wind until 3 PM AKST this afternoon for AKZ019.
     Strong Wind until 6 PM AKST this evening for AKZ018.
MARINE...Small Craft Advisory for PKZ012-022-041>043-051>053.

&&

JLC/Bezenek

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