Alert archive / Alaska / Gale Warnings in 2018

Gale Warning 356, NWS Anchorage, AK

May 27, 2018

NWS Anchorage, AK issued this gale warning at May 27, 2018, 3:57 AM AKDT. It was in force for 72 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
May 27, 2018, 3:57 AM AKDT (11:57 UTC)
Expired
May 30, 2018, 3:43 AM AKDT
In force
72 hr
Issued by
NWS Anchorage, AK

The text

As transmitted.

912 
FZAK62 PAFC 271157
OFFALU

Offshore Waters Forecast
National Weather Service Anchorage AK
357 AM AKDT Sun May 27 2018

Offshore Waters Forecast for the Bering Sea

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.

PKZ499-280045-
357 AM AKDT Sun May 27 2018
.SYNOPSIS FOR CENTRAL BERING SEA...

A 1000 mb Kamchatka low moves to 56N 171E at 987 mb by early Mon 
morning, then to 58N 178E at 984 mb by Tue morning. A 999 mb 
north Pacific low tracks to 49N 176E at 993 mb, then to 56N 178W 
at 988 mb by Mon morning before dissipating. The associated front
sweeps across the Aleutians and Bering through Mon night.

$$

PKZ411-280045-
Bering Sea Offshore West of 180 and East of the International
Dateline-
357 AM AKDT Sun May 27 2018

.TODAY...SE wind 10 to 20 kt increasing to 25 kt in the afternoon.
Seas 3 to 6 ft. Rain.
.TONIGHT...SE wind 15 to 30 kt. Seas 6 to 10 ft. Rain.
.MON...SW wind 15 to 30 kt. Seas 7 to 11 ft.
.MON NIGHT...SW wind 15 to 30 kt. Seas 9 to 14 ft.
.TUE THROUGH THU...SW wind 15 to 30 kt. Seas 7 to 12 ft.

$$

PKZ412-280045-
Bering Sea Offshore 171W to 180 and North of 56N-
357 AM AKDT Sun May 27 2018

.TODAY...S wind 10 to 20 kt. Seas 3 ft. Patchy fog.
.TONIGHT...SE wind 15 to 30 kt. Seas 4 to 9 ft. Rain.
.MON...SE wind 15 to 30 kt. Seas 8 to 13 ft. Rain.
.MON NIGHT...S wind 15 to 25 kt. Seas 8 to 12 ft.
.TUE THROUGH THU...SW wind 10 to 25 kt. Seas 8 to 13 ft.

$$

PKZ413-280045-
Bering Sea Offshore 171W to 180 and South of 56N-
357 AM AKDT Sun May 27 2018

...GALE WARNING TONIGHT...

.TODAY...S wind 10 to 25 kt. Seas 3 to 6 ft. Patchy fog.
.TONIGHT...SE wind 20 to 35 kt. Seas 5 to 10 ft. Rain.
.MON...SW wind 15 to 30 kt becoming 25 kt in the afternoon. Seas
8 to 12 ft.
.MON NIGHT...SW wind 25 kt. Seas 8 to 13 ft.
.TUE THROUGH THU...SW wind 15 to 30 kt. Seas 9 to 14 ft.

$$

PKZ414-280045-
Bering Sea Offshore East of 171W-
357 AM AKDT Sun May 27 2018

.TODAY...W wind up to 15 kt. Seas 3 ft. Patchy fog.
.TONIGHT...S wind up to 15 kt becoming SE 10 to 25 kt after
midnight. Seas 4 ft. Patchy fog.
.MON...SE wind 15 to 30 kt. Seas 5 to 10 ft. Rain.
.MON NIGHT...S wind 15 to 25 kt. Seas 6 to 10 ft.
.TUE THROUGH THU...SW wind 10 to 20 kt. Seas 7 to 12 ft.

$$
6 follow-up statements
282 
FZAK62 PAFC 272334
OFFALU

Offshore Waters Forecast
National Weather Service Anchorage AK
334 PM AKDT Sun May 27 2018

Offshore Waters Forecast for the Bering Sea

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.

PKZ499-281345-
334 PM AKDT Sun May 27 2018
.SYNOPSIS FOR CENTRAL BERING SEA...
High pressure over the eastern Bering exits through Bristol Bay 
for Mon afternoon. A 992 mb low at 54N 168E moves to 57N 175E at 
981 mb Mon afternoon and continues to 60N 180 at 985 mb by Tue 
afternoon. Its front moves over the Aleutians and Bering through 
Bristol Bay for Tue afternoon.

$$

PKZ411-281345-
Bering Sea Offshore West of 180 and East of the International
Dateline-
334 PM AKDT Sun May 27 2018

...GALE WARNING MONDAY NIGHT...

.TONIGHT...SE wind 15 to 30 kt. Seas 6 to 10 ft. Rain.
.MON...SW wind 15 to 30 kt. Seas 7 to 12 ft.
.MON NIGHT...SW wind 20 to 35 kt. Seas 9 to 16 ft.
.TUE...W wind 15 to 30 kt. Seas 9 to 16 ft.
.TUE NIGHT...W wind 15 to 25 kt. Seas 7 to 11 ft.
.WED THROUGH FRI...S wind 10 to 25 kt. Seas 6 to 11 ft.

$$

PKZ412-281345-
Bering Sea Offshore 171W to 180 and North of 56N-
334 PM AKDT Sun May 27 2018

...GALE WARNING MONDAY...

.TONIGHT...SE wind 15 to 30 kt. Seas 4 to 9 ft. Rain.
.MON...SE wind 20 to 35 kt. Seas 8 to 13 ft. Rain.
.MON NIGHT...S wind 15 to 30 kt. Seas 9 to 13 ft.
.TUE...SW wind 20 to 30 kt. Seas 10 to 16 ft.
.TUE NIGHT...SW wind 20 to 30 kt. Seas 10 to 16 ft.
.WED THROUGH FRI...S wind 10 to 20 kt. Seas 7 to 12 ft.

$$

PKZ413-281345-
Bering Sea Offshore 171W to 180 and South of 56N-
334 PM AKDT Sun May 27 2018

...GALE WARNING TONIGHT AND MONDAY NIGHT...

.TONIGHT...SE wind 20 to 35 kt. Seas 6 to 11 ft. Rain.
.MON...SW wind 15 to 30 kt. Seas 9 to 12 ft.
.MON NIGHT...SW wind 20 to 35 kt. Seas 9 to 15 ft.
.TUE...SW wind 25 to 35 kt. Seas 11 to 17 ft.
.TUE NIGHT...SW wind 15 to 30 kt. Seas 9 to 15 ft.
.WED THROUGH FRI...S wind 15 to 25 kt. Seas 6 to 11 ft.

$$

PKZ414-281345-
Bering Sea Offshore East of 171W-
334 PM AKDT Sun May 27 2018

.TONIGHT...S wind up to 15 kt becoming SE 15 to 30 kt after
midnight. Seas 2 to 7 ft. Patchy fog.
.MON...SE wind 15 to 30 kt. Seas 5 to 11 ft. Rain.
.MON NIGHT...SW wind 15 to 25 kt. Seas 7 to 10 ft.
.TUE...SW wind 15 to 25 kt. Seas 6 to 11 ft.
.TUE NIGHT...SW wind 15 to 25 kt. Seas 7 to 12 ft.
.WED THROUGH FRI...S wind 10 to 20 kt. Seas 7 to 12 ft.

$$
355 
FZAK62 PAFC 281153
OFFALU

Offshore Waters Forecast
National Weather Service Anchorage AK
353 AM AKDT Mon May 28 2018

Offshore Waters Forecast for the Bering Sea

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.

PKZ499-290100-
353 AM AKDT Mon May 28 2018
.SYNOPSIS FOR CENTRAL BERING SEA...
A 983 mb low at 56N 173E moves to 58N 179E at 980 mb by Tue morning 
and then to 60N 178W at 988 mb by Wed morning.

$$

PKZ411-290100-
Bering Sea Offshore West of 180 and East of the International
Dateline-
353 AM AKDT Mon May 28 2018

...GALE WARNING TONIGHT...

.TODAY...SW wind 15 to 30 kt. Seas 8 to 13 ft. Rain.
.TONIGHT...SW wind 20 to 35 kt. Seas 10 to 17 ft. Rain.
.TUE...W wind 15 to 30 kt. Seas 9 to 17 ft.
.TUE NIGHT...W wind 15 to 25 kt. Seas 7 to 11 ft.
.WED THROUGH THU...SW wind 10 to 25 kt. Seas 5 to 10 ft.
.FRI...S wind up to 15 kt. Seas 3 to 8 ft.

$$

PKZ412-290100-
Bering Sea Offshore 171W to 180 and North of 56N-
353 AM AKDT Mon May 28 2018

...GALE WARNING TODAY...

.TODAY...SE wind 20 to 35 kt. Seas 8 to 13 ft. Rain.
.TONIGHT...S wind 15 to 30 kt. Seas 9 to 13 ft.
.TUE...SW wind 20 to 30 kt. Seas 10 to 16 ft.
.TUE NIGHT...SW wind 20 to 30 kt. Seas 10 to 16 ft.
.WED THROUGH FRI...S wind 10 to 25 kt. Seas 7 to 12 ft.

$$

PKZ413-290100-
Bering Sea Offshore 171W to 180 and South of 56N-
353 AM AKDT Mon May 28 2018

...GALE WARNING TONIGHT AND TUESDAY...

.TODAY...SW wind 20 to 30 kt. Seas 9 to 12 ft.
.TONIGHT...SW wind 20 to 35 kt. Seas 9 to 16 ft.
.TUE...SW wind 25 to 35 kt. Seas 10 to 17 ft.
.TUE NIGHT...SW wind 20 to 30 kt. Seas 9 to 16 ft.
.WED THROUGH THU...SW wind 25 kt. Seas 7 to 11 ft.
.FRI...S wind up to 15 kt. Seas 4 to 9 ft.

$$

PKZ414-290100-
Bering Sea Offshore East of 171W-
353 AM AKDT Mon May 28 2018

.TODAY...SE wind 15 to 30 kt. Seas 5 to 10 ft. Rain.
.TONIGHT...S wind 15 to 25 kt. Seas 8 ft.
.TUE...SW wind 10 to 25 kt. Seas 5 to 10 ft.
.TUE NIGHT...SW wind 15 to 25 kt. Seas 7 to 12 ft.
.WED THROUGH FRI...S wind 15 to 25 kt. Seas 7 to 12 ft.

$$
804 
FZAK62 PAFC 282338
OFFALU

Offshore Waters Forecast
National Weather Service Anchorage AK
338 PM AKDT Mon May 28 2018

Offshore Waters Forecast for the Bering Sea

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.

PKZ499-291345-
338 PM AKDT Mon May 28 2018
.SYNOPSIS FOR CENTRAL BERING SEA...
A 979 mb low at 57N 175E will move to 60N 173W at 994 mb Wed 
afternoon. 
 

$$

PKZ411-291345-
Bering Sea Offshore West of 180 and East of the International
Dateline-
338 PM AKDT Mon May 28 2018

...GALE WARNING THROUGH TUESDAY...

.TONIGHT...SW wind 20 to 35 kt except E 20 kt N of 56N. Seas 10 to 
16 ft. Rain.
.TUE...W wind 20 to 35 kt except variable 15 kt N of 56N. Seas 9 to 
16 ft.
.TUE NIGHT...W wind 15 to 25 kt. Seas 8 to 11 ft.
.WED...SW wind 10 to 25 kt. Seas 5 to 9 ft.
.WED NIGHT...SW wind 10 to 25 kt. Seas 5 to 9 ft.
.THU...SW wind 15 to 30 kt. Seas 7 to 11 ft.
.FRI...S wind up to 15 kt. Seas 3 to 8 ft.
.SAT...W wind up to 10 kt. Seas 4 ft.

$$

PKZ412-291345-
Bering Sea Offshore 171W to 180 and North of 56N-
338 PM AKDT Mon May 28 2018

...GALE WARNING TUESDAY...

.TONIGHT...S wind 15 to 30 kt. Seas 9 to 13 ft.
.TUE...S wind 25 to 35 kt. Seas 10 to 16 ft. Rain.
.TUE NIGHT...SW wind 15 to 30 kt. Seas 9 to 16 ft. Rain.
.WED...W wind 25 kt. Seas 8 to 13 ft.
.WED NIGHT...SW wind 10 to 25 kt. Seas 5 to 10 ft.
.THU THROUGH SAT...SE wind 10 to 25 kt. Seas 4 to 9 ft.

$$

PKZ413-291345-
Bering Sea Offshore 171W to 180 and South of 56N-
338 PM AKDT Mon May 28 2018

...GALE WARNING THROUGH TUESDAY...

.TONIGHT...SW wind 20 to 35 kt. Seas 9 to 16 ft.
.TUE...SW wind 25 to 35 kt. Seas 11 to 18 ft.
.TUE NIGHT...SW wind 30 kt. Seas 9 to 16 ft.
.WED...W wind 25 kt. Seas 8 to 11 ft.
.WED NIGHT...SW wind 25 kt. Seas 7 to 10 ft.
.THU...SW wind 25 kt. Seas 7 to 10 ft.
.FRI THROUGH SAT...SW wind up to 15 kt. Seas 4 to 9 ft.

$$

PKZ414-291345-
Bering Sea Offshore East of 171W-
338 PM AKDT Mon May 28 2018

.TONIGHT...SE wind 20 to 30 kt becoming S 15 kt in the evening. Seas
8 ft.
.TUE...SW wind 15 to 25 kt. Seas 6 to 11 ft.
.TUE NIGHT...SW wind 15 to 25 kt. Seas 8 to 13 ft.
.WED...SW wind 25 kt. Seas 9 to 13 ft.
.WED NIGHT...SW wind 20 kt. Seas 7 to 10 ft.
.THU THROUGH SAT...SE wind 10 to 20 kt. Seas 6 to 9 ft.

$$
187 
FZAK62 PAFC 291151
OFFALU

Offshore Waters Forecast
National Weather Service Anchorage AK
351 AM AKDT Tue May 29 2018

Offshore Waters Forecast for the Bering Sea

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.

PKZ499-300015-
351 AM AKDT Tue May 29 2018
.SYNOPSIS FOR CENTRAL BERING SEA...
A 982 mb low at 57N 177E moves to 60N 176W at 989 mb by Wed
morning and then to 59N 170W at 1003 mb by Thu morning.  


$$

PKZ411-300015-
Bering Sea Offshore West of 180 and East of the International
Dateline-
351 AM AKDT Tue May 29 2018

...GALE WARNING TODAY...

.TODAY...W wind 20 to 35 kt. Seas 9 to 16 ft.
.TONIGHT...W wind 15 to 25 kt. Seas 7 to 11 ft.
.WED...SW wind 10 to 25 kt. Seas 5 to 9 ft.
.WED NIGHT...SW wind 10 to 20 kt. Seas 6 ft.
.THU THROUGH FRI...S wind 10 to 25 kt. Seas 4 to 9 ft.
.SAT...NW wind up to 15 kt. Seas 3 to 8 ft.

$$

PKZ412-300015-
Bering Sea Offshore 171W to 180 and North of 56N-
351 AM AKDT Tue May 29 2018

.TODAY...S wind 15 to 30 kt. Seas 10 to 16 ft. Rain.
.TONIGHT...SW wind 15 to 30 kt. Seas 9 to 16 ft. Rain showers.
.WED...W wind 25 kt. Seas 8 to 13 ft.
.WED NIGHT...W wind 10 to 25 kt. Seas 5 to 10 ft.
.THU THROUGH FRI...S wind 10 to 20 kt. Seas 4 to 8 ft.
.SAT...SE wind up to 20 kt. Seas 7 to 12 ft.

$$

PKZ413-300015-
Bering Sea Offshore 171W to 180 and South of 56N-
351 AM AKDT Tue May 29 2018

...GALE WARNING TODAY...

.TODAY...SW wind 25 to 35 kt. Seas 11 to 18 ft.
.TONIGHT...SW wind 20 to 30 kt. Seas 9 to 16 ft.
.WED...W wind 25 kt. Seas 10 ft.
.WED NIGHT...SW wind 15 to 25 kt. Seas 6 to 10 ft.
.THU...SW wind 15 to 25 kt. Seas 5 to 8 ft.
.FRI THROUGH SAT...SW wind up to 20 kt. Seas 6 to 11 ft.

$$

PKZ414-300015-
Bering Sea Offshore East of 171W-
351 AM AKDT Tue May 29 2018

.TODAY...SW wind 15 to 25 kt. Seas 7 to 12 ft.
.TONIGHT...SW wind 15 to 25 kt. Seas 8 to 13 ft.
.WED...SW wind 25 kt. Seas 10 to 13 ft.
.WED NIGHT...SW wind 20 kt. Seas 8 ft.
.THU...SW wind up to 20 kt. Seas 4 to 9 ft.
.FRI...S wind up to 15 kt. Seas 4 ft.
.SAT...SE wind 25 kt. Seas 6 to 11 ft.

$$
645 
FZAK62 PAFC 292348
OFFALU

Offshore Waters Forecast
National Weather Service Anchorage AK
348 PM AKDT Tue May 29 2018

Offshore Waters Forecast for the Bering Sea

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.

PKZ499-301330-
348 PM AKDT Tue May 29 2018
.SYNOPSIS FOR CENTRAL BERING SEA...
A 985 mb low at 58N 179W will move to 61N 173W at 999 mb Wed night. 
The low will then move to 60N 169W at 1012 mb Thu afternoon.

$$

PKZ411-301330-
Bering Sea Offshore West of 180 and East of the International
Dateline-
348 PM AKDT Tue May 29 2018

.TONIGHT...W wind 15 to 30 kt. Seas 7 to 12 ft.
.WED...W wind 15 to 30 kt becoming SW 10 to 20 kt in the afternoon. 
Seas 6 to 10 ft.
.WED NIGHT...SW wind 10 to 25 kt. Seas 6 ft.
.THU...SW wind 15 to 30 kt. Seas 5 to 9 ft.
.THU NIGHT...S wind 15 to 30 kt. Seas 6 to 10 ft.
.FRI...SE wind 20 to 35 kt. Seas 5 to 10 ft.
.SAT...NW wind up to 15 kt. Seas 3 to 8 ft.
.SUN...W wind up to 15 kt. Seas 5 to 8 ft.

$$

PKZ412-301330-
Bering Sea Offshore 171W to 180 and North of 56N-
348 PM AKDT Tue May 29 2018

...GALE WARNING TONIGHT...

.TONIGHT...SW wind 20 to 35 kt. Seas 10 to 17 ft. Rain.
.WED...W wind 25 kt. Seas 9 to 14 ft.
.WED NIGHT...W wind 10 to 25 kt. Seas 6 to 10 ft.
.THU...SW wind 10 to 20 kt. Seas 5 to 8 ft.
.THU NIGHT...S wind up to 20 kt. Seas 5 ft.
.FRI THROUGH SAT...SE wind up to 20 kt. Seas 6 to 11 ft.
.SUN...SW wind up to 15 kt. Seas 7 to 11 ft.

$$

PKZ413-301330-
Bering Sea Offshore 171W to 180 and South of 56N-
348 PM AKDT Tue May 29 2018

...GALE WARNING TONIGHT...

.TONIGHT...SW wind 25 to 40 kt becoming 30 kt after midnight. Seas
10 to 18 ft.
.WED...W wind 20 to 30 kt. Seas 9 to 12 ft.
.WED NIGHT...SW wind 15 to 30 kt. Seas 6 to 10 ft.
.THU...SW wind 20 kt. Seas 7 ft.
.THU NIGHT...SW wind 10 to 25 kt. Seas 4 to 7 ft.
.FRI...SE wind 15 to 30 kt. Seas 6 ft.
.SAT THROUGH SUN...SW wind up to 20 kt. Seas 7 to 12 ft.

$$

PKZ414-301330-
Bering Sea Offshore East of 171W-
348 PM AKDT Tue May 29 2018

.TONIGHT...SW wind 20 to 30 kt. Seas 9 to 14 ft. Rain.
.WED...SW wind 25 kt. Seas 10 to 13 ft.
.WED NIGHT...SW wind 10 to 25 kt. Seas 9 ft.
.THU...W wind 10 to 20 kt. Seas 5 to 9 ft.
.THU NIGHT...W wind up to 15 kt. Seas 5 ft.
.FRI...S wind up to 20 kt. Seas 4 ft.
.SAT THROUGH SUN...S wind 25 kt. Seas 6 to 11 ft.

$$
167 
FZAK62 PAFC 301143
OFFALU

Offshore Waters Forecast
National Weather Service Anchorage AK
343 AM AKDT Wed May 30 2018

Offshore Waters Forecast for the Bering Sea

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.

PKZ499-310115-
343 AM AKDT Wed May 30 2018
.SYNOPSIS FOR CENTRAL BERING SEA...
A 991 mb low at 59N 175W will move to 59N 171W at 1004 mb by Thu
morning and then to 58N 169W at 1011 by Thu night. 

$$

PKZ411-310115-
Bering Sea Offshore West of 180 and East of the International
Dateline-
343 AM AKDT Wed May 30 2018

.TODAY...W wind 10 to 25 kt. Seas 5 to 9 ft.
.TONIGHT...SW wind 10 to 20 kt. Seas 6 ft.
.THU...S wind 10 to 25 kt. Seas 6 ft.
.THU NIGHT...S wind 15 to 25 kt. Seas 5 to 8 ft.
.FRI THROUGH SAT...SE wind 25 to 40 kt. Seas 9 to 17 ft.
.SUN...SW wind 20 kt. Seas 8 to 12 ft.

$$

PKZ412-310115-
Bering Sea Offshore 171W to 180 and North of 56N-
343 AM AKDT Wed May 30 2018

.TODAY...W wind 25 kt. Seas 9 to 14 ft.
.TONIGHT...W wind 10 to 25 kt. Seas 6 to 9 ft.
.THU...W wind 10 to 20 kt. Seas 5 to 8 ft.
.THU NIGHT...S wind up to 20 kt. Seas 5 ft.
.FRI THROUGH SUN...SE wind 25 to 40 kt. Seas 9 to 14 ft.

$$

PKZ413-310115-
Bering Sea Offshore 171W to 180 and South of 56N-
343 AM AKDT Wed May 30 2018

.TODAY...W wind 20 to 30 kt. Seas 9 to 12 ft.
.TONIGHT...W wind 15 to 25 kt. Seas 6 to 10 ft.
.THU...SW wind 10 to 20 kt. Seas 7 ft.
.THU NIGHT...SW wind up to 20 kt. Seas 5 ft.
.FRI THROUGH SAT...S wind 25 to 40 kt. Seas 9 to 17 ft.
.SUN...S wind 15 to 25 kt. Seas 8 to 13 ft.

$$

PKZ414-310115-
Bering Sea Offshore East of 171W-
343 AM AKDT Wed May 30 2018

.TODAY...SW wind 25 kt. Seas 9 to 13 ft.
.TONIGHT...SW wind 10 to 25 kt. Seas 9 ft.
.THU...W wind 10 to 25 kt. Seas 5 to 8 ft.
.THU NIGHT...W wind up to 15 kt. Seas 4 to 7 ft.
.FRI THROUGH SUN...SE wind 15 to 30 kt. Seas 4 to 9 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 May 26, 6:07 PM AKDT, 9 hours 50 minutes earlier.

Area forecast discussion, May 26, 6:07 PM AKDT, 9 hours 50 minutes before
Southcentral and Southwest Alaska Forecast Discussion...CORRECTED
National Weather Service Anchorage AK
607 PM AKDT Sat May 26 2018

Resent with updated Long Term Discussion...

.ANALYSIS AND UPPER LEVELS...
A nearly stationary gale force low centered over the Eastern Gulf
continues to bring primarily just cloud cover to the Gulf Coast
and areas of Southcentral, but this is beginning to clear as high
pressure from the Mainland approaches from the west. Slightly
further to the north from the Kuskokwim Valley into the Copper
River Basin skies were clear for much of the morning, allowing for
enough heating to allow for convection to begin developing by
early this afternoon. This is occurring along the southern edge
of the thermal trough that stretches into the interior, and will
the focus for isolated thunderstorm activity this weekend. The
weak ridging over the Mainland is much stronger and widespread,
which has allowed for widespread stratus to continue over much of
that area. Gusty northwesterly winds are also blowing from the
Eastern Bering into the AK Pen, which should continue into late
Sunday as the ridge axis approaches from the west.

&&

.MODEL DISCUSSION...
The models remain in very good synoptic agreement through the
holiday weekend, so forecast confidence remains generally good.
There is some question as to how much shower activity will
continue into late this evening from the weak easterly wave that
will rotate around the Gulf low, leading to slightly lower
confidence in the rainfall forecast over the Gulf Coast and
Southcentral overnight tonight.

&&

.AVIATION...
PANC...VFR conditions and light winds will persist through Sunday.

&&

.SHORT TERM FORECAST SOUTHCENTRAL ALASKA (Days 1 through 3)... As
the low in the eastern Gulf weakens through Sunday the thermal
trough will push south through Southcentral Alaska. This will
allow for diurnal showers around the area with the chance for
thunderstorms to develop in areas around the Copper River Basin,
Talkeetna Mountains and the Alaska Range this afternoon/evening.
This setup will remain similar on Sunday with the chance for
thunderstorms extending south to the western Chugach and Kenai
Mountains. The diurnal pattern will also allow for some clearing
of cloud cover overnight into the early afternoon with
temperatures reaching the mid 60s in the Susitna Valley and
western Kenai Peninsula Sunday afternoon.

&&

.SHORT TERM FORECAST SOUTHWEST ALASKA (Days 1 through 3)...
Thunderstorms are already firing in the Southern Kuskokwim Valley
and Bristol Bay and are expected to continue through the evening
with the unstable air aloft. By tomorrow, the thermal trough will
weaken and move slightly eastward, which will limit the chance for
thunderstorms to the northeast corner of the area, up near the
Alaska range. Elsewhere in Southwest, Sunday should be a fairly
nice day, although along the Kuskokwim coast, clouds may prevail
with a chance of fog in the morning as the northwest flow brings
more moisture to the area. The upper level ridge continues to move
eastward over the area on Monday, continuing dry and stable
conditions before a front brings rain to the outer coast starting
Monday night.

&&

.SHORT TERM FORECAST BERING SEA/ALEUTIANS (Days 1 through 3)...
The ridge in place over the Bering Sea today continues a pattern
of low clouds across most of the region, although the far Western
Aleutians is beginning to see the effects of an approaching front.
This front will continue to move across the Bering Sea tomorrow
and Monday as its parent low moves northward towards the
Kamchatka peninsula. As a developing wave moves into the base of
the trough near the central Aleutians, the force will become a
gale force front with the possibility of a few storm force gusts
south of the chain. By Monday night, the front will have crossed
much of the Bering Sea, switching the winds to mainly southwest
and bringing the parent low down from the north. Air aloft
associated with this system is fairly warm, so strong winds are
not expected behind the front and the precip will remain liquid.
&&

.LONG TERM FORECAST (Days 3 through 7...Tue through Sat)...
As is often the case with the extend portion of the forecast,
there is decent agreement among the models early on before slowly
(and surely) starting to diverge from one another. This leads to
fairly high confidence in the pattern to start the week, but lower
and lower confidence as we move towards the first weekend in
June. To start things off, a low over the Western Bering will
continue to weaken as it slings a front through the West Coast.
This will make for rather dreary, wet, and windy day for SW AK Tue.
Convection (mostly showers with some isolated thunderstorms) will
be likely east of the AK/Aleutian Ranges across the rest of
southern AK. The front shears apart in the lower elevations as it
tries to cross those mountain ranges into Wed. However, the more
potent upper- level trough will eject over the southern mainland.
With plenty of low-level moisture, moderate instability with a
cold pocket aloft, and decent lift, expect showers to encompass
most of the mainland. The heaviest precipitation will fall over
the southwest. This trough could also drop 850mb (5,000')
temperatures about 5 degrees Celsius making both Wed and Thu
rather cool and wet.

However, by late Thu-early Fri, most models are now pointing to a
fairly strong noise of a ridge from the Pacific pushing into the
state. This would dramatically change the weather to a much drier
and warmer pattern. Most models hint at this feature at least
lasting 1-2 days. But the ECMWF is showing signs of closing off
the high. If this were to happen, we could move into a very
summer-like pattern for much of the early part of June. As we said
at the onset of the discussion, the farther out in time, the less
we rely on any given solution. However we have trended the
forecast slightly warmer and drier for next weekend and we will be
monitoring the progress of the ridge.

&&

.AFC WATCHES/WARNINGS/ADVISORIES...
PUBLIC...None.
MARINE...Gales 173-176.

&&

SYNOPSIS AND MODEL DISCUSSION...DEK
SOUTHCENTRAL ALASKA...DK
SOUTHWEST ALASKA/BERING SEA/ALEUTIANS...LF
LONG TERM...MSO

The office that day

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

IssuedProductOfficeCountiesLasted
May 27, 3:57 AM AKDTGale WarningAFC36 hr
May 27, 3:57 AM AKDTSmall Craft AdvisoryAFC4 days
May 27, 3:34 PM AKDTGale WarningAFC48 hr
May 27, 3:40 PM AKDTGale WarningAFC36 hr

Nearby

Gale Warnings in Alaska, 2018Every gale warning in 2018

Sources

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