Alert archive / Alaska / Gale Warnings in 2017

Gale Warning 685, NWS Anchorage, AK

December 20, 2017

NWS Anchorage, AK issued this gale warning at Dec 20, 2017, 3:30 AM AKST. It was in force for 4 days. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Dec 20, 2017, 3:30 AM AKST (12:30 UTC)
Expired
Dec 24, 2017, 3:28 AM AKST
In force
4 days
Issued by
NWS Anchorage, AK

The text

As transmitted.

802 
FZAK61 PAFC 201230
OFFAER

Offshore Waters Forecast
National Weather Service Anchorage AK
330 AM AKST Wed Dec 20 2017

Offshore waters forecast for the Gulf of Alaska West of 144W

Wind forecasts reflect the predominant speed and direction
expected. Sea forecasts represent an average of the highest
one-third of the combined wind wave and swell height.

PKZ399-210130-
330 AM AKST Wed Dec 20 2017
.SYNOPSIS FOR THE WESTERN GULF OF ALASKA...
A front enters the western Gulf Thu morning then it moves into the 
northeastern Gulf Fri morning.

$$

PKZ351-210130-
Gulf of Alaska Offshore North of 57N and West of 144W-
330 AM AKST Wed Dec 20 2017

...GALE WARNING THURSDAY...

.TODAY...W wind 10 to 20 kt. Seas 5 to 9 ft.
.TONIGHT...NW wind up to 15 kt becoming NE after midnight. Seas 5
to 8 ft.
.THU...E wind 20 to 35 kt. Seas 6 to 10 ft.
.THU NIGHT...SE wind 30 to 45 kt. Seas 11 to 19 ft.
.FRI THROUGH SAT...SE wind 30 to 45 kt. Seas 16 to 28 ft.
.SUN...S wind up to 20 kt. Seas 12 to 20 ft.

$$

PKZ352-210130-
Gulf of Alaska Offshore South of 57N North of 55N and West of
144W-
330 AM AKST Wed Dec 20 2017

...STORM WARNING THURSDAY...

.TODAY...NW wind 10 to 15 kt. Seas 7 to 12 ft.
.TONIGHT...NE wind up to 20 kt becoming E 15 to 30 kt after
midnight. Seas 7 to 10 ft.
.THU...E wind 25 to 40 kt increasing to 35 to 50 kt in the
afternoon. Seas 8 to 12 ft building to 10 to 18 ft in the
afternoon.
.THU NIGHT...SE wind 35 to 50 kt. Seas 14 to 29 ft.
.FRI THROUGH SAT...SE wind 30 to 45 kt. Seas 18 to 27 ft.
.SUN...S wind up to 15 kt. Seas 10 to 18 ft.

$$
8 follow-up statements
622 
FZAK61 PAFC 202352
OFFAER

Offshore Waters Forecast
National Weather Service Anchorage AK
252 PM AKST Wed Dec 20 2017

Offshore waters forecast for the Gulf of Alaska West of 144W

Wind forecasts reflect the predominant speed and direction
expected. Sea forecasts represent an average of the highest
one-third of the combined wind wave and swell height.

PKZ399-211415-
252 PM AKST Wed Dec 20 2017
.SYNOPSIS FOR THE WESTERN GULF OF ALASKA...
A strong front moves into the western Gulf Thu morning and moves 
east through Fri afternoon.

$$

PKZ351-211415-
Gulf of Alaska Offshore North of 57N and West of 144W-
252 PM AKST Wed Dec 20 2017

...GALE WARNING THURSDAY AND THURSDAY NIGHT...

.TONIGHT...NW wind up to 15 kt becoming NE after midnight. Seas 5
to 8 ft.
.THU...E wind 20 to 35 kt. Seas 5 to 10 ft.
.THU NIGHT...SE wind 30 to 45 kt. Seas 8 to 16 ft building to 14
to 22 ft after midnight.
.FRI...SE wind 35 to 45 kt. Seas 17 to 26 ft.
.FRI NIGHT...SE wind 40 kt. Seas 22 to 26 ft.
.SAT...SE wind 25 to 40 kt. Seas 19 to 23 ft.
.SUN...S wind up to 20 kt. Seas 12 to 20 ft.
.MON...NE wind up to 10 kt. Seas 5 to 8 ft.

$$

PKZ352-211415-
Gulf of Alaska Offshore South of 57N North of 55N and West of
144W-
252 PM AKST Wed Dec 20 2017

...STORM WARNING THURSDAY AND THURSDAY NIGHT...

.TONIGHT...NE wind up to 20 kt becoming E 15 to 30 kt after
midnight. Seas 9 ft.
.THU...E wind 25 to 40 kt increasing to 35 to 50 kt in the
afternoon. Seas 9 to 17 ft.
.THU NIGHT...SE wind 35 to 50 kt. Seas 14 to 29 ft. Rain.
.FRI...SE wind 35 to 45 kt. Seas 22 to 28 ft.
.FRI NIGHT...SE wind 25 to 40 kt. Seas 20 to 25 ft.
.SAT...SE wind 25 to 40 kt. Seas 18 to 22 ft.
.SUN...S wind up to 15 kt. Seas 10 to 18 ft.
.MON...NE wind up to 15 kt. Seas 7 ft.

$$
239 
FZAK61 PAFC 211234
OFFAER

Offshore Waters Forecast
National Weather Service Anchorage AK
334 AM AKST Thu Dec 21 2017

Offshore waters forecast for the Gulf of Alaska West of 144W

Wind forecasts reflect the predominant speed and direction
expected. Sea forecasts represent an average of the highest
one-third of the combined wind wave and swell height.

PKZ399-220200-
334 AM AKST Thu Dec 21 2017
.SYNOPSIS FOR THE WESTERN GULF OF ALASKA...
A front in the western Gulf will move into the northern Gulf Fri 
morning and stay nearly stationary through Sat morning. 

$$

PKZ351-220200-
Gulf of Alaska Offshore North of 57N and West of 144W-
334 AM AKST Thu Dec 21 2017

...GALE WARNING THROUGH FRIDAY...

.TODAY...E wind 10 to 25 kt increasing to 20 to 35 kt in the
afternoon. Seas 5 to 10 ft.
.TONIGHT...E wind 30 to 45 kt. Seas 8 to 16 ft building to 14 to
22 ft after midnight.
.FRI...SE wind 35 to 45 kt. Seas 17 to 26 ft.
.FRI NIGHT...SE wind 35 to 45 kt. Seas 22 to 26 ft.
.SAT...SE wind 25 to 40 kt. Seas 16 to 26 ft.
.SUN...S wind 15 to 25 kt. Seas 11 to 16 ft.
.MON...W wind up to 15 kt. Seas 5 to 8 ft.

$$

PKZ352-220200-
Gulf of Alaska Offshore South of 57N North of 55N and West of
144W-
334 AM AKST Thu Dec 21 2017

...STORM WARNING TONIGHT...

.TODAY...E wind 30 to 45 kt. Seas 9 to 17 ft.
.TONIGHT...SE wind 35 to 50 kt. Seas 14 to 29 ft. Rain.
.FRI...SE wind 35 to 45 kt. Seas 22 to 28 ft. Rain.
.FRI NIGHT...SE wind 30 to 45 kt. Seas 20 to 25 ft.
.SAT...S wind 20 to 35 kt. Seas 16 to 24 ft.
.SUN...SW wind 15 to 25 kt. Seas 11 to 19 ft.
.MON...SW wind up to 15 kt. Seas 4 to 8 ft.

$$
820 
FZAK61 PAFC 212351
OFFAER

Offshore Waters Forecast
National Weather Service Anchorage AK
251 PM AKST Thu Dec 21 2017

Offshore waters forecast for the Gulf of Alaska West of 144W

Wind forecasts reflect the predominant speed and direction
expected. Sea forecasts represent an average of the highest
one-third of the combined wind wave and swell height.

PKZ399-221400-
251 PM AKST Thu Dec 21 2017
.SYNOPSIS FOR THE WESTERN GULF OF ALASKA...

A 976 mb low at 50N 160W moves north into the eastern Bering
tonight. A front in the western Gulf will move into the northern 
Gulf Fri afternoon and stay nearly stationary through Sat 
afternoon. A 977 mb low at 48N 155W Fri afternoon moves to 54N 
157W at 985 mb Sat afternoon.

$$

PKZ351-221400-
Gulf of Alaska Offshore North of 57N and West of 144W-
251 PM AKST Thu Dec 21 2017

...GALE WARNING THROUGH FRIDAY NIGHT...

.TONIGHT...E wind 30 to 45 kt. Seas 10 to 18 ft.
.FRI...SE wind 35 to 45 kt. Seas 16 to 24 ft.
.FRI NIGHT...E wind 35 to 45 kt. Seas 18 to 23 ft.
.SAT...SE wind 25 to 40 kt. Seas 19 to 26 ft.
.SAT NIGHT...SE wind 20 to 35 kt. Seas 16 to 23 ft.
.SUN...S wind 15 to 25 kt. Seas 11 to 16 ft.
.MON THROUGH TUE...SW wind up to 15 kt. Seas 3 to 8 ft.

$$

PKZ352-221400-
Gulf of Alaska Offshore South of 57N North of 55N and West of
144W-
251 PM AKST Thu Dec 21 2017

...STORM WARNING TONIGHT...

.TONIGHT...SE wind 35 to 50 kt. Seas 15 to 29 ft. Rain.
.FRI...SE wind 35 to 45 kt. Seas 21 to 28 ft. Rain.
.FRI NIGHT...SE wind 45 kt diminishing to 30 to 40 kt after
midnight. Seas 22 to 25 ft. Rain.
.SAT...SE wind 25 to 40 kt. Seas 18 to 26 ft.
.SAT NIGHT...S wind 15 to 25 kt. Seas 16 to 19 ft.
.SUN...SW wind 25 kt. Seas 11 to 19 ft.
.MON THROUGH TUE...SE wind up to 15 kt. Seas 4 to 9 ft.

$$
718 
FZAK61 PAFC 221241
OFFAER

Offshore Waters Forecast
National Weather Service Anchorage AK
341 AM AKST Fri Dec 22 2017

Offshore waters forecast for the Gulf of Alaska West of 144W

Wind forecasts reflect the predominant speed and direction
expected. Sea forecasts represent an average of the highest
one-third of the combined wind wave and swell height.

PKZ399-230145-
341 AM AKST Fri Dec 22 2017
.SYNOPSIS FOR THE WESTERN GULF OF ALASKA...
A front enters the Western Gulf Sat afternoon and moves across 
the Gulf through Sun morning. A 990 mb low slides along the 
front to 55N 154W by Sun morning.

$$

PKZ351-230145-
Gulf of Alaska Offshore North of 57N and West of 144W-
341 AM AKST Fri Dec 22 2017

...GALE WARNING THROUGH SATURDAY...

.TODAY...SE wind 35 to 45 kt. Seas 15 to 25 ft.
.TONIGHT...E wind 35 to 45 kt. Seas 18 to 23 ft.
.SAT...E wind 30 to 45 kt. Seas 18 to 24 ft. Rain.
.SAT NIGHT...SE wind 20 to 35 kt. Seas 16 to 22 ft.
.SUN...S wind 15 to 25 kt. Seas 13 to 17 ft.
.MON...W wind up to 20 kt. Seas 8 to 13 ft.
.TUE...S wind up to 10 kt. Seas 3 to 5 ft.

$$

PKZ352-230145-
Gulf of Alaska Offshore South of 57N North of 55N and West of
144W-
341 AM AKST Fri Dec 22 2017

...GALE WARNING THROUGH SATURDAY...

.TODAY...SE wind 35 to 45 kt. Seas 21 to 29 ft. Rain.
.TONIGHT...SE wind 45 kt. Seas 21 to 25 ft. Rain.
.SAT...SE wind 30 to 45 kt diminishing to 20 to 35 kt 
in the afternoon. Seas 20 to 24 ft. Rain.
.SAT NIGHT...S wind 15 to 25 kt. Seas 15 to 20 ft.
.SUN...SW wind 15 to 30 kt. Seas 13 to 21 ft.
.MON...SW wind up to 20 kt. Seas 8 to 13 ft.
.TUE...SE wind up to 20 kt. Seas 4 to 9 ft.

$$
149 
FZAK61 PAFC 222355
OFFAER

Offshore Waters Forecast
National Weather Service Anchorage AK
255 PM AKST Fri Dec 22 2017

Offshore waters forecast for the Gulf of Alaska West of 144W

Wind forecasts reflect the predominant speed and direction
expected. Sea forecasts represent an average of the highest
one-third of the combined wind wave and swell height.

PKZ399-231430-
255 PM AKST Fri Dec 22 2017
.SYNOPSIS FOR THE WESTERN GULF OF ALASKA...
A front in the southwestern Gulf moves to the northeastern Gulf
Sat afternoon. A 978 mb low at 48N 155W moves to 56N 153W at 1000 
mb Sun afternoon.

$$

PKZ351-231430-
Gulf of Alaska Offshore North of 57N and West of 144W-
255 PM AKST Fri Dec 22 2017

...GALE WARNING THROUGH SATURDAY NIGHT...

.TONIGHT...E wind 35 to 45 kt. Seas 18 to 26 ft.
.SAT...E wind 35 to 45 kt. Seas 18 to 24 ft. Rain.
.SAT NIGHT...SE wind 25 to 40 kt. Seas 16 to 22 ft. Widespread
rain showers.
.SUN...S wind 10 to 25 kt. Seas 12 to 16 ft.
.SUN NIGHT...S wind 15 to 25 kt. Seas 12 to 15 ft.
.MON...SW wind up to 20 kt. Seas 7 to 12 ft.
.TUE...S wind up to 10 kt. Seas 3 to 5 ft.
.WED...E wind 10 to 25 kt. Seas 9 to 17 ft.

$$

PKZ352-231430-
Gulf of Alaska Offshore South of 57N North of 55N and West of
144W-
255 PM AKST Fri Dec 22 2017

...GALE WARNING THROUGH SATURDAY...

.TONIGHT...E wind 45 kt. Seas 22 to 28 ft. Rain.
.SAT...SE wind 30 to 45 kt. Seas 20 to 24 ft. Rain.
.SAT NIGHT...SE wind 15 to 30 kt. Seas 17 to 21 ft.
.SUN...S wind 15 to 30 kt. Seas 13 to 18 ft.
.SUN NIGHT...SW wind 15 to 30 kt. Seas 12 to 17 ft.
.MON THROUGH TUE...SE wind up to 20 kt. Seas 6 to 11 ft.
.WED...SE wind 15 to 30 kt. Seas 13 to 20 ft.

$$
193 
FZAK61 PAFC 231244
OFFAER

Offshore Waters Forecast
National Weather Service Anchorage AK
344 AM AKST Sat Dec 23 2017

Offshore waters forecast for the Gulf of Alaska West of 144W

Wind forecasts reflect the predominant speed and direction
expected. Sea forecasts represent an average of the highest
one-third of the combined wind wave and swell height.

PKZ399-240130-
344 AM AKST Sat Dec 23 2017
.SYNOPSIS FOR THE WESTERN GULF OF ALASKA...
A 986 mb low at 54N 158W Sat afternoon extends a front into the
Western Gulf that moves across the Northern Gulf by Mon morning.
The low will move to 58N 153W at 1013 mb by Mon morning.

$$

PKZ351-240130-
Gulf of Alaska Offshore North of 57N and West of 144W-
344 AM AKST Sat Dec 23 2017

...GALE WARNING THROUGH TONIGHT...

.TODAY...E wind 35 to 45 kt. Seas 18 to 25 ft.
.TONIGHT...SE wind 20 to 35 kt. Seas 17 to 21 ft. Rain.
.SUN...S wind 10 to 25 kt. Seas 13 to 16 ft.
.SUN NIGHT...SW wind 10 to 20 kt. Seas 12 ft.
.MON...W wind 10 to 25 kt. Seas 7 to 12 ft.
.TUE THROUGH WED...E wind 10 to 20 kt. Seas 7 ft.

$$

PKZ352-240130-
Gulf of Alaska Offshore South of 57N North of 55N and West of
144W-
344 AM AKST Sat Dec 23 2017

...GALE WARNING TODAY...

.TODAY...SE wind 30 to 45 kt. Seas 20 to 27 ft. Rain.
.TONIGHT...S wind 15 to 30 kt. Seas 16 to 20 ft. Rain.
.SUN...S wind 15 to 25 kt. Seas 15 ft.
.SUN NIGHT...SW wind 15 to 25 kt. Seas 12 to 17 ft.
.MON...W wind 10 to 25 kt. Seas 7 to 12 ft.
.TUE THROUGH WED...E wind up to 20 kt. Seas 6 to 11 ft.

$$
978 
FZAK61 PAFC 240002
OFFAER

Offshore Waters Forecast
National Weather Service Anchorage AK
302 PM AKST Sat Dec 23 2017

Offshore waters forecast for the Gulf of Alaska West of 144W

Wind forecasts reflect the predominant speed and direction
expected. Sea forecasts represent an average of the highest
one-third of the combined wind wave and swell height.

PKZ399-241400-
302 PM AKST Sat Dec 23 2017
.SYNOPSIS FOR THE WESTERN GULF OF ALASKA...
A strong front continues to move across the Gulf through Sun 
night.

$$

PKZ351-241400-
Gulf of Alaska Offshore North of 57N and West of 144W-
302 PM AKST Sat Dec 23 2017

...GALE WARNING TONIGHT...

.TONIGHT...SE wind 20 to 35 kt. Seas 17 to 21 ft. Rain.
.SUN...S wind 10 to 25 kt. Seas 13 to 16 ft. Rain.
.SUN NIGHT...SW wind 10 to 25 kt. Seas 12 ft.
.MON...SW wind 15 to 25 kt. Seas 9 to 13 ft.
.MON NIGHT...W wind 15 kt. Seas 5 to 9 ft.
.TUE THROUGH WED...E wind 10 to 20 kt. Seas 4 to 8 ft.
.THU...E wind 20 kt. Seas 9 to 15 ft.

$$

PKZ352-241400-
Gulf of Alaska Offshore South of 57N North of 55N and West of
144W-
302 PM AKST Sat Dec 23 2017

.TONIGHT...S wind 15 to 30 kt. Seas 16 to 21 ft. Rain.
.SUN...S wind 15 to 25 kt. Seas 12 to 17 ft.
.SUN NIGHT...SW wind 15 to 25 kt. Seas 12 to 17 ft.
.MON...W wind 10 to 25 kt. Seas 8 to 13 ft.
.MON NIGHT...W wind up to 15 kt. Seas 5 to 8 ft.
.TUE THROUGH WED...E wind up to 20 kt. Seas 6 to 11 ft.
.THU...E wind 25 kt. Seas 12 to 15 ft.

$$
540 
FZAK61 PAFC 241228
OFFAER

Offshore Waters Forecast
National Weather Service Anchorage AK
328 AM AKST Sun Dec 24 2017

Offshore waters forecast for the Gulf of Alaska West of 144W

Wind forecasts reflect the predominant speed and direction
expected. Sea forecasts represent an average of the highest
one-third of the combined wind wave and swell height.

PKZ399-250200-
328 AM AKST Sun Dec 24 2017
.SYNOPSIS FOR THE WESTERN GULF OF ALASKA...
A 994 mb low at 56N 158W follows a strong front across the Gulf to
59N 141W at 1028 mb by Tue morning. High pressure pushes into the
Southwestern Gulf for Tue morning.

$$

PKZ351-250200-
Gulf of Alaska Offshore North of 57N and West of 144W-
328 AM AKST Sun Dec 24 2017

.TODAY...S wind 10 to 25 kt. Seas 13 to 16 ft. Rain.
.TONIGHT...SW wind 10 to 25 kt. Seas 12 ft.
.MON...SW wind 15 to 25 kt. Seas 11 ft.
.MON NIGHT...W wind 15 kt. Seas 5 to 9 ft.
.TUE...NW wind up to 15 kt. Seas 5 ft.
.WED THROUGH THU...E wind 10 to 25 kt. Seas 6 to 11 ft.

$$

PKZ352-250200-
Gulf of Alaska Offshore South of 57N North of 55N and West of
144W-
328 AM AKST Sun Dec 24 2017

.TODAY...S wind 15 to 25 kt. Seas 15 ft.
.TONIGHT...SW wind 15 to 25 kt. Seas 12 to 17 ft.
.MON...W wind 10 to 25 kt. Seas 8 to 13 ft.
.MON NIGHT...W wind up to 15 kt. Seas 5 to 8 ft.
.TUE THROUGH THU...NE wind 10 to 25 kt. Seas 6 to 11 ft.

$$

What forecasters said that day

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

NWS Anchorage, AK wrote its last area forecast discussion before this gale warning went out at Dec 19, 4:25 PM AKST, 11 hours 5 minutes earlier.

Area forecast discussion, Dec 19, 4:25 PM AKST, 11 hours 5 minutes before
Southcentral and Southwest Alaska Forecast Discussion
National Weather Service Anchorage AK
425 PM AKST Tue Dec 19 2017

.ANALYSIS AND UPPER LEVELS...
The dominant large-scale weather feature this afternoon remains a
once powerful but now weakening Bering Sea low with the main
circulation center moving towards the Bering Strait. A southwest
to northeast oriented upper level jet can be seen on water vapor
moving eastward as it tracks from Southwest Alaska to Southcentral.
Deep layer southwest flow aloft is bringing in a slug of moisture
to Cook Inlet and Prince William Sound with MIMIC TPW imagery
depicting a narrow but intact filament of enhanced water vapor
values. Over the remainder of the Bering Sea and Southwest Alaska,
broad southwest cold sector flow is supporting a convectively
enhanced showery environment. Finally, east of Kamchatka, two
separate shortwave troughs are forming along a baroclinic zone,
with the southern stream low eventually becoming a powerful storm
force front over the Bering Sea later tonight.

&&

.MODEL DISCUSSION...
The numerical weather models are in excellent agreement with the
general pattern heading into the weekend. However, they differ
with a series of lows moving through the Bering Sea Wednesday
through Friday, with each track of a low affecting the track of
the next low. For now, a general blended approach was favored
although the GFS model was given additional weighting, especially
by Friday as a powerful warm front/low moves through the Southwest
part of Alaska. For Southcentral, model discrepancy was low and
forecast confidence is high.

&&

.AVIATION...
PANC...Snow at the terminal is expected to taper off quickly
during the mid-evening timeframe. VFR CIGS and VSBYs are expected
through the remainder of the TAF period.

&&

.SHORT TERM FORECAST SOUTHCENTRAL ALASKA (Days 1 and 2)...
The front over Southcentral late this afternoon will pick up speed
this evening an upper level short-wave drives it eastward. Thus,
expect a rapid end to steady snow over the Cook Inlet-Susitna
Valley corridor early this evening, then over Prince William Sound
and the Copper Basin overnight tonight. An unstable air mass
behind the front combined with persistent low level southwest flow
will produce some showers or areas of snow in upslope areas of
the Susitna Valley, Talkeetna Mountains, and Alaska Range through
Wednesday. A strong ridge will then build over the region Wednesday,
leading to dry conditions with temperatures falling to more
seasonable norms. These falling temperatures will lead to development
of surface inversions which will be favorable for fog to develop,
especially in and along Cook Inlet.

&&

.SHORT TERM FORECAST SOUTHWEST ALASKA (Days 1 and 2)...
Gusty southwesterly winds and widespread snow shower activity
will continue through Wednesday morning as unstable air continues
to move in from the Bering Sea. No significant accumulations are
expected, with temperatures hovering around freezing limiting the
ability for anywhere to get more than a dusting of snow. Weather
across the eastern half of the area will settle a bit Wednesday
afternoon through the overnight hours as weak ridging (high
pressure) moves into the area. The Kuskokwim Delta, and especially
the coastal villages along the Delta, will get clipped by a fast-
moving but pretty potent storm Wednesday evening/night. Another
round of 45-55 mph southwesterly winds should be expected as this
storm passes through. The heaviest precipitation should stay to
the north, but the winds will produce significant wave action and
higher water levels that may impact coastal locations. With
moderate tides, forecasted water levels should remain fairly close
to highest astronomical tide levels, but rough wave action on top
of the water could produce some localized impacts from erosion if
the strongest winds happen to coincide with the high tides.

By Thursday morning this storm will be moving away, and some
patchy fog to start the day is possible across much of the area.
This fog will quickly dissipate as a new storm track starts to
take hold which will bring increasingly strong east and southeast
winds to the Bristol Bay zone on Thursday night into the day
Friday. There is still uncertainty with where the strongest winds
will develop, so stay tuned. A high wind watch is in effect for
the area.

&&

.SHORT TERM FORECAST BERING SEA/ALEUTIANS (Days 1 and 2)...
Meanwhile, the Bering Sea and Aleutians will stay quick active
over the next few days and even as we transition into a new
overall weather pattern in the longer range periods. The quick-
hitting storm that will clip parts of Southwest Alaska will have a
more widespread impact on the Bering/Aleutians. The Adak area will
see winds continue to ramp up dramatically overnight tonight, and
should peak during the morning hours on Wednesday. There could be
a few gusts that approach 75 mph, but these should only last an
hour or two. This weather front will stall over the central
Aleutians as another low forms along the front and moves up from
the south on Thursday.

&&

.LONG TERM FORECAST (Thursday through Tuesday)...
Starting Thursday, a ridge of high pressure will be firmly in
place over the mainland, which will change the track of the low
pressure systems traversing the forecast area. Instead of moving
in from the west, the next two low pressure systems will approach
from the south and bring a lot more moisture, which will cause
heavy precipitation along the North Pacific coast, including the
oceanward side of the Kenai Peninsula. The first weather concern
is for southwest Alaska on Thursday and Friday, as the approaching
low will bring a strong low level jet and very tight gradient
over the Alaska Peninsula and Bristol Bay area. This has the
potential for warning level winds over the northern AK Pen and
inland Bristol Bay, so we have issued a high wind watch for those
areas. Temperatures all along the west coast will be very warm, so
snow will eventually turn over to rain as far north as the
Kuskokwim Delta.

The precipitation pushing onshore will be mostly rain for the
Kodiak area and the southern portion of the Kenai peninsula, but
there are some interesting developments further northward. Models
have been hanging on to a pocket of cold air over Southcentral for
several days now, making precip type particularly challenging in
this area. 12z run of the GFS and EC indicate that the surface low
will be further westward, which would keep that cold air in place
and possibly bring snow to the Kenai Peninsula and northward over
the weekend. However, the 18z run of the GFS has moved the low
eastward again, indicating more of a rain/snow mix. Behind this
low is some significant cold air, which brings a chance for snow
for all portions of the forecast area before Christmas Day.
Either way, the forecast looks to be messy for the weekend before
a return to more seasonable weather early next week.

&&

.AFC WATCHES/WARNINGS/ADVISORIES...
PUBLIC...Winter Storm Warning 145.
 High Wind Watch 161.
MARINE...Storm Warning 173 175 176 177 179 181.
 Gale Warning 160 165 170 171 172 174 178 180.

&&

SYNOPSIS AND MODEL DISCUSSION...JA
SOUTHCENTRAL ALASKA...SB
SOUTHWEST ALASKA/BERING SEA/ALEUTIANS...AD
LONG TERM...LF

In the hours before

Local storm report, Dec 19, 10:41 PM AKST, 4 hours 49 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ANCHORAGE AK
1041 PM AKST TUE DEC 19 2017

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1230 PM     SNOW             TALKEETNA               62.34N 150.09W
12/19/2017  M9.0 INCH                           AK   PUBLIC

            NEAR THE CHULITNA RIVER

0127 PM     SNOW             KENAI                   60.55N 151.21W
12/19/2017  M1.7 INCH                           AK   NWS EMPLOYEE

0430 PM     SNOW             14 ESE SKWENTNA         61.94N 150.99W
12/19/2017  M5.5 INCH                           AK   PUBLIC

0612 PM     SNOW             BIG LAKE                61.52N 149.95W
12/19/2017  M6.2 INCH                           AK   NWS EMPLOYEE

            STORM TOTAL SNOWFALL

0612 PM     SNOW             6 ESE MULDOON           61.18N 149.59W
12/19/2017  M2.5 INCH                           AK   PUBLIC

            1.5 HR SNOWFALL TOTAL

0700 PM     SNOW             NE ANCHORAGE            61.22N 149.87W
12/19/2017  M3.0 INCH                           AK   NWS EMPLOYEE

            4-7PM SNOWFALL TOTAL

0725 PM     SNOW             SUTTON                  61.72N 148.88W
12/19/2017  M7.0 INCH                           AK   TRAINED SPOTTER

            AT THE TIME OF THE OBSERVATION IT WAS STILL SNOWING.

0747 PM     SNOW             2 N RABBIT CREEK        61.11N 149.83W
12/19/2017  M2.0 INCH                           AK   NWS EMPLOYEE

            STORM TOTAL

0747 PM     SNOW             1 ESE EAGLE RIVER       61.32N 149.55W
12/19/2017  M3.5 INCH                           AK   NWS EMPLOYEE

            STORM TOTAL OVER 4 HOURS

0800 PM     SNOW             1 NW GLEN ALPS          61.11N 149.71W
12/19/2017  M3.0 INCH                           AK   TRAINED SPOTTER

            SOUTHERLY BREEZE WITH SOME PATCHY FOG OBSERVED

0854 PM     SNOW             8 SW THOMPSON PASS      61.06N 145.91W
12/19/2017  M7.0 INCH                           AK   TRAINED SPOTTER

            SNOWFALL BETWEEN 4-7PM

0854 PM     SNOW             VALDEZ                  61.08N 146.30W
12/19/2017  M13.8 INCH                          AK   TRAINED SPOTTER

            FALLING AT A RATE OF 1.6IN PER HR

0920 PM     SNOW             2 SE EAGLE RIVER        61.30N 149.52W
12/19/2017  M3.0 INCH                           AK   NWS EMPLOYEE

            STORM TOTAL

1012 PM     SNOW             1 E RABBIT CREEK        61.08N 149.78W
12/19/2017  M1.0 INCH                           AK   PUBLIC

            STORM TOTAL

&&

RA

The office that day

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

IssuedProductOfficeCountiesLasted
Dec 19, 3:32 PM AKSTGale WarningAFC60 hr
Dec 19, 3:38 PM AKSTHigh Wind WatchAFC37 hr
Dec 20, 3:30 AM AKSTStorm WarningAFC48 hr
Dec 20, 3:40 AM AKSTGale WarningAFC72 hr
Dec 20, 3:40 AM AKSTStorm WarningAFC48 hr
Dec 20, 3:53 AM AKSTStorm WarningAFC3 days
Dec 20, 2:52 PM AKSTGale WarningAFC61 hr
Dec 20, 2:52 PM AKSTSmall Craft AdvisoryAFC61 hr
Dec 20, 2:52 PM AKSTStorm WarningAFC61 hr

Nearby

Gale Warnings in Alaska, 2017Every gale warning in 2017

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text.