Alert archive / Alaska / Gale Warnings in 2020

Gale Warning 134, NWS Anchorage, AK

February 28, 2020

NWS Anchorage, AK issued this gale warning at Feb 28, 2020, 3:35 AM AKST. It was in force for 6 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
Feb 28, 2020, 3:35 AM AKST (12:35 UTC)
Expired
Mar 5, 2020, 3:34 PM AKST
In force
6 days
Issued by
NWS Anchorage, AK

The text

As transmitted.

421 
FZAK61 PAFC 281235
OFFAER

Offshore Waters Forecast
National Weather Service Anchorage AK
335 AM AKST Fri Feb 28 2020

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.

PKZ399-290200-
335 AM AKST Fri Feb 28 2020
.SYNOPSIS FOR THE WESTERN GULF OF ALASKA...

A 1000 mb low at 49N 141W Fri morning moves ashore near Yakutat 
Fri evening. A front enters the southwestern Gulf Sat afternoon, 
then moves northeast, reaching the Gulf Coast Sun morning.

$$

PKZ351-290200-
Gulf of Alaska Offshore North of 57N and West of 144W-
335 AM AKST Fri Feb 28 2020

.TODAY...W wind 15 to 25 kt. Seas 10 ft.
.TONIGHT...W wind 10 to 25 kt. Seas 7 to 10 ft.
.SAT...S wind 15 to 30 kt. Seas 6 to 9 ft. Snow.
.SAT NIGHT...SW wind 20 to 30 kt. Seas 8 to 13 ft.
.SUN THROUGH MON...W wind 35 to 50 kt. Seas 14 to 29 ft.
.TUE...W wind 15 to 30 kt. Seas 9 to 16 ft.

$$

PKZ352-290200-
Gulf of Alaska Offshore South of 57N North of 55N and West of
144W-
335 AM AKST Fri Feb 28 2020

...GALE WARNING SATURDAY...

.TODAY...W wind 25 kt. Seas 12 ft.
.TONIGHT...W wind 10 to 25 kt. Seas 10 ft.
.SAT...S wind 20 to 35 kt. Seas 9 to 13 ft. Rain and snow.
.SAT NIGHT...SW wind 25 to 35 kt. Seas 11 to 16 ft.
.SUN THROUGH MON...W wind 30 to 45 kt. Seas 14 to 27 ft.
.TUE...W wind 20 to 30 kt. Seas 10 to 17 ft.

$$
13 follow-up statements
329 
FZAK61 PAFC 290051
OFFAER

Offshore Waters Forecast
National Weather Service Anchorage AK
351 PM AKST Fri Feb 28 2020

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.

PKZ399-291330-
351 PM AKST Fri Feb 28 2020
.SYNOPSIS FOR THE WESTERN GULF OF ALASKA...

Weak low pressure remains in the northern Gulf through Sat 
morning. A strong front enters the western Gulf Sat morning and 
reaches the central Gulf Sat afternoon. The strong front spreads
across the Gulf and reaches the eastern Gulf Sun afternoon.

$$

PKZ351-291330-
Gulf of Alaska Offshore North of 57N and West of 144W-
351 PM AKST Fri Feb 28 2020

...GALE WARNING SATURDAY NIGHT...

.TONIGHT...W wind 10 to 20 kt. Seas 6 to 9 ft.
.SAT...SW wind 15 kt becoming S in the afternoon. Seas 7 ft.
.SAT NIGHT...S wind 20 to 35 kt. Seas 8 to 13 ft. Rain and snow.
.SUN...SW wind 40 kt. Seas 15 to 23 ft.
.SUN NIGHT...W wind 35 to 50 kt. Seas 21 to 26 ft.
.MON...W wind 20 to 30 kt. Seas 14 to 22 ft.
.TUE...W wind 15 to 30 kt. Seas 9 to 16 ft.
.WED...NW wind up to 15 kt. Seas 6 to 10 ft.

$$

PKZ352-291330-
Gulf of Alaska Offshore South of 57N North of 55N and West of
144W-
351 PM AKST Fri Feb 28 2020

...GALE WARNING SATURDAY NIGHT...

.TONIGHT...W wind 10 to 20 kt. Seas 10 ft.
.SAT...S wind 15 to 30 kt. Seas 8 to 11 ft. Rain and snow.
.SAT NIGHT...SW wind 25 to 35 kt. Seas 9 to 17 ft.
.SUN...SW wind 40 kt. Seas 15 to 26 ft.
.SUN NIGHT...W wind 30 to 45 kt. Seas 18 to 26 ft.
.MON THROUGH WED...NW wind 20 to 35 kt. Seas 11 to 19 ft.

$$
804 
FZAK61 PAFC 291251
OFFAER

Offshore Waters Forecast
National Weather Service Anchorage AK
351 AM AKST Sat Feb 29 2020

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.

PKZ399-010200-
351 AM AKST Sat Feb 29 2020
.SYNOPSIS FOR THE WESTERN GULF OF ALASKA...
A strong front enters the western Gulf Sat morning and reaches the 
central Gulf Sat afternoon. The strong front spreads across the Gulf 
and reaches the eastern Gulf Sun afternoon.

$$

PKZ351-010200-
Gulf of Alaska Offshore North of 57N and West of 144W-
351 AM AKST Sat Feb 29 2020

...GALE WARNING TONIGHT AND SUNDAY...

.TODAY...SW wind 15 to 25 kt. Seas 7 ft. Snow and rain.
.TONIGHT...S wind 20 to 35 kt. Seas 8 to 13 ft. Rain and snow.
.SUN...SW wind 35 to 45 kt. Seas 14 to 20 ft building to 20 to 24
ft in the afternoon.
.SUN NIGHT...W wind 35 to 50 kt. Seas 21 to 26 ft.
.MON...W wind 20 to 30 kt. Seas 14 to 22 ft.
.TUE...W wind 15 to 30 kt. Seas 11 to 17 ft.
.WED...NW wind up to 20 kt. Seas 7 to 12 ft.

$$

PKZ352-010200-
Gulf of Alaska Offshore South of 57N North of 55N and West of
144W-
351 AM AKST Sat Feb 29 2020

...GALE WARNING TONIGHT AND SUNDAY...

.TODAY...S wind 15 to 30 kt. Seas 8 to 11 ft. Rain and snow.
.TONIGHT...SW wind 25 to 35 kt. Seas 9 to 17 ft. Rain.
.SUN...SW wind 45 kt. Seas 15 to 26 ft.
.SUN NIGHT...W wind 30 to 45 kt. Seas 18 to 26 ft.
.MON THROUGH WED...NW wind 20 to 35 kt. Seas 12 to 20 ft.

$$
524 
FZAK61 PAFC 010028
OFFAER

Offshore Waters Forecast
National Weather Service Anchorage AK
328 PM AKST Sat Feb 29 2020

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.

PKZ399-011330-
328 PM AKST Sat Feb 29 2020
.SYNOPSIS FOR THE WESTERN GULF OF ALASKA...

A front will move northeastward across the Gulf Saturday 
afternoon through Saturday night. A 985 mb low will move over 
Cook Inlet Sunday evening and then move southeastward to over 
Prince William Sound at 989 mb Monday evening. 

$$

PKZ351-011330-
Gulf of Alaska Offshore North of 57N and West of 144W-
328 PM AKST Sat Feb 29 2020

...GALE WARNING THROUGH SUNDAY NIGHT...

.TONIGHT...SW wind 25 to 40 kt. Seas 9 to 14 ft.
.SUN...W wind 40 kt. Seas 16 to 23 ft.
.SUN NIGHT...SW wind 30 to 40 kt. Seas 21 to 24 ft.
.MON...W wind 25 to 35 kt. Seas 14 to 21 ft.
.MON NIGHT...W wind 25 to 35 kt. Seas 13 to 16 ft.
.TUE...W wind 15 to 30 kt. Seas 11 to 17 ft.
.WED THROUGH THU...N wind up to 20 kt. Seas 7 to 12 ft.

$$

PKZ352-011330-
Gulf of Alaska Offshore South of 57N North of 55N and West of
144W-
328 PM AKST Sat Feb 29 2020

...GALE WARNING THROUGH SUNDAY NIGHT...

.TONIGHT...SW wind 35 kt. Seas 12 to 17 ft.
.SUN...SW wind 40 kt. Seas 16 to 24 ft.
.SUN NIGHT...SW wind 25 to 40 kt. Seas 18 to 24 ft.
.MON...W wind 15 to 30 kt. Seas 13 to 19 ft.
.MON NIGHT...W wind 30 kt. Seas 14 to 20 ft.
.TUE THROUGH THU...NW wind 15 to 30 kt. Seas 10 to 18 ft.

$$
776 
FZAK61 PAFC 011246
OFFAER

Offshore Waters Forecast
National Weather Service Anchorage AK
346 AM AKST Sun Mar 1 2020

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.

PKZ399-020145-
346 AM AKST Sun Mar 1 2020
.SYNOPSIS FOR THE WESTERN GULF OF ALASKA...
A 990 mb low near Anchorage Sun morning will move to 61N 147W Mon 
morning, then to 60N 145W at 991 mb Tue morning.

$$

PKZ351-020145-
Gulf of Alaska Offshore North of 57N and West of 144W-
346 AM AKST Sun Mar 1 2020

...GALE WARNING THROUGH MONDAY...

.TODAY...SW wind 35 to 45 kt. Seas 16 to 23 ft.
.TONIGHT...SW wind 35 to 45 kt. Seas 21 to 25 ft.
.MON...W wind 30 to 40 kt. Seas 14 to 22 ft.
.MON NIGHT...W wind 20 to 30 kt. Seas 12 to 16 ft.
.TUE THROUGH WED...W wind 15 to 30 kt. Seas 9 to 14 ft.
.THU...NW wind 10 to 25 kt. Seas 7 to 10 ft.

$$

PKZ352-020145-
Gulf of Alaska Offshore South of 57N North of 55N and West of
144W-
346 AM AKST Sun Mar 1 2020

...GALE WARNING THROUGH MONDAY...

.TODAY...SW wind 35 to 45 kt. Seas 16 to 24 ft.
.TONIGHT...SW wind 30 to 45 kt. Seas 19 to 25 ft.
.MON...SW wind 20 to 35 kt. Seas 13 to 21 ft.
.MON NIGHT...W wind 20 to 30 kt. Seas 12 to 18 ft.
.TUE THROUGH THU...NW wind 20 to 35 kt. Seas 9 to 16 ft.

$$
410 
FZAK61 PAFC 020032
OFFAER

Offshore Waters Forecast
National Weather Service Anchorage AK
332 PM AKST Sun Mar 1 2020

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.

PKZ399-021400-
332 PM AKST Sun Mar 1 2020
.SYNOPSIS FOR THE WESTERN GULF OF ALASKA...

A 982 mb low over northern Bristol Bay Sunday afternoon quickly 
moves eastward to over Prince William Sound at 989 mb Sunday 
night. The low then remains stationary over Prince William Sound 
at 989 mb through Tuesday afternoon. 

$$

PKZ351-021400-
Gulf of Alaska Offshore North of 57N and West of 144W-
332 PM AKST Sun Mar 1 2020

...GALE WARNING THROUGH MONDAY NIGHT...

.TONIGHT...SW wind 45 kt. Seas 21 to 27 ft.
.MON...W wind 25 to 40 kt. Seas 15 to 25 ft.
.MON NIGHT...W wind 25 to 35 kt. Seas 13 to 18 ft.
.TUE...W wind 20 to 30 kt. Seas 13 to 16 ft.
.TUE NIGHT...W wind 15 to 30 kt. Seas 14 ft.
.WED THROUGH THU...NW wind 15 to 30 kt. Seas 8 to 13 ft.
.FRI...N wind 10 kt. Seas 3 to 7 ft.

$$

PKZ352-021400-
Gulf of Alaska Offshore South of 57N North of 55N and West of
144W-
332 PM AKST Sun Mar 1 2020

...GALE WARNING THROUGH MONDAY NIGHT...

.TONIGHT...SW wind 30 to 45 kt. Seas 21 to 26 ft.
.MON...SW wind 25 to 40 kt. Seas 15 to 23 ft.
.MON NIGHT...W wind 25 to 40 kt. Seas 14 to 20 ft.
.TUE...W wind 25 to 35 kt. Seas 14 to 17 ft.
.TUE NIGHT...W wind 20 to 30 kt. Seas 13 to 16 ft.
.WED THROUGH THU...NW wind 20 to 35 kt. Seas 9 to 16 ft.
.FRI...NW wind 15 kt. Seas 5 to 8 ft.

$$
046 
FZAK61 PAFC 021233
OFFAER

Offshore Waters Forecast
National Weather Service Anchorage AK
333 AM AKST Mon Mar 2 2020

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.

PKZ399-030200-
333 AM AKST Mon Mar 2 2020
.SYNOPSIS FOR THE WESTERN GULF OF ALASKA...

A 988 mb low at 61N 147W mon morning moves to 60N 146W at 990 mb
Tue morning, then to 59N 148W at 991 mb Wed morning.

$$

PKZ351-030200-
Gulf of Alaska Offshore North of 57N and West of 144W-
333 AM AKST Mon Mar 2 2020

...GALE WARNING THROUGH TONIGHT...

.TODAY...W wind 25 to 40 kt. Seas 16 to 25 ft.
.TONIGHT...W wind 25 to 35 kt. Seas 14 to 18 ft. Freezing spray.
.TUE...W wind 20 to 30 kt. Seas 15 ft. Freezing spray.
.TUE NIGHT...W wind 25 to 35 kt. Seas 13 to 16 ft.
.WED THROUGH THU...N wind 15 to 30 kt. Seas 9 to 14 ft.
.FRI...N wind up to 10 kt. Seas 4 to 7 ft.

$$

PKZ352-030200-
Gulf of Alaska Offshore South of 57N North of 55N and West of
144W-
333 AM AKST Mon Mar 2 2020

...GALE WARNING THROUGH TUESDAY...

.TODAY...SW wind 25 to 40 kt. Seas 16 to 25 ft.
.TONIGHT...W wind 25 to 40 kt becoming 30 kt after midnight. Seas
14 to 20 ft.
.TUE...W wind 35 kt. Seas 14 to 17 ft.
.TUE NIGHT...W wind 20 to 30 kt. Seas 13 to 17 ft.
.WED THROUGH THU...NW wind 20 to 35 kt. Seas 10 to 17 ft.
.FRI...NW wind up to 15 kt. Seas 5 to 9 ft.

$$
539 
FZAK61 PAFC 030046
OFFAER

Offshore Waters Forecast
National Weather Service Anchorage AK
346 PM AKST Mon Mar 2 2020

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.

PKZ399-031500-
346 PM AKST Mon Mar 2 2020
.SYNOPSIS FOR THE WESTERN GULF OF ALASKA...

A 990 mb low will remain nearly stationary about 45 nm west of
Cordova through Tue, then move to 150 nm south of Cordova Wed 
afternoon while slowly weakening to 994 mb.

$$

PKZ351-031500-
Gulf of Alaska Offshore North of 57N and West of 144W-
346 PM AKST Mon Mar 2 2020

...GALE WARNING TONIGHT AND TUESDAY NIGHT...
...HEAVY FREEZING SPRAY WARNING TUESDAY NIGHT...

.TONIGHT...W wind 25 to 35 kt. Seas 14 to 18 ft. Freezing spray.
.TUE...W wind 20 to 30 kt. Seas 15 ft. Freezing spray.
.TUE NIGHT...W wind 25 to 35 kt. Seas 13 to 16 ft. Freezing spray. 
Heavy freezing spray west of 148W. Snow showers.
.WED...NW wind 15 to 30 kt. Seas 10 to 15 ft.
.WED NIGHT...N wind 15 to 25 kt. Seas 8 to 12 ft.
.THU...N wind 10 to 25 kt. Seas 8 to 11 ft.
.FRI THROUGH SAT...W wind up to 10 kt. Seas 4 to 7 ft.

$$

PKZ352-031500-
Gulf of Alaska Offshore South of 57N North of 55N and West of
144W-
346 PM AKST Mon Mar 2 2020

...GALE WARNING THROUGH TUESDAY...
...HEAVY FREEZING SPRAY WARNING TUESDAY NIGHT...

.TONIGHT...W wind 25 to 40 kt becoming 30 kt after midnight. 
Seas 14 to 20 ft.
.TUE...W wind 35 kt. Seas 14 to 17 ft.
.TUE NIGHT...W wind 20 to 30 kt. Seas 13 to 17 ft. Freezing
spray...except heavy freezing spray W of 149W after midnight.
.WED...NW wind 20 to 35 kt. Seas 13 to 16 ft.
.WED NIGHT...NW wind 20 to 35 kt. Seas 12 to 17 ft.
.THU...NW wind 20 to 35 kt. Seas 10 to 17 ft.
.FRI THROUGH SAT...NW wind up to 15 kt. Seas 5 to 9 ft.

$$
460 
FZAK61 PAFC 031210
OFFAER

Offshore Waters Forecast
National Weather Service Anchorage AK
310 AM AKST Tue Mar 3 2020

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.

PKZ399-040215-
310 AM AKST Tue Mar 3 2020
.SYNOPSIS FOR THE WESTERN GULF OF ALASKA...

A 989 mb low at 59N 146W remains nearly stationary through Wed
morning before moving to 57N 144W at 995 mb Thu morning.

$$

PKZ351-040215-
Gulf of Alaska Offshore North of 57N and West of 144W-
310 AM AKST Tue Mar 3 2020

...GALE WARNING TONIGHT...

.TODAY...W wind 20 to 30 kt. Seas 15 ft. Freezing spray.
.TONIGHT...W wind 25 to 35 kt. Seas 13 to 17 ft. Freezing spray.
Snow showers.
.WED...NW wind 15 to 30 kt. Seas 9 to 16 ft. Freezing spray.
.WED NIGHT...N wind 20 to 30 kt. Seas 9 to 13 ft.
.THU THROUGH FRI...NW wind 10 to 25 kt. Seas 5 to 10 ft.
.SAT...W wind 10 kt. Seas 5 ft.

$$

PKZ352-040215-
Gulf of Alaska Offshore South of 57N North of 55N and West of
144W-
310 AM AKST Tue Mar 3 2020

...GALE WARNING THROUGH WEDNESDAY...

.TODAY...W wind 35 kt. Seas 14 to 17 ft.
.TONIGHT...W wind 20 to 35 kt. Seas 14 to 17 ft. Freezing spray.
.WED...NW wind 20 to 35 kt. Seas 13 to 16 ft. Freezing spray.
.WED NIGHT...NW wind 20 to 35 kt. Seas 13 to 18 ft.
.THU...NW wind 20 to 35 kt. Seas 9 to 17 ft.
.FRI THROUGH SAT...NW wind up to 15 kt. Seas 5 to 10 ft.

$$
837 
FZAK61 PAFC 040003
OFFAER

Offshore Waters Forecast
National Weather Service Anchorage AK
303 PM AKST Tue Mar 3 2020

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.

PKZ399-041415-
303 PM AKST Tue Mar 3 2020
.SYNOPSIS FOR THE WESTERN GULF OF ALASKA...

A 990 mb low near 60N 147W moves to near 58N 146W at 994 mb by 
Wednesday afternoon before dissipating by Thursday afternoon.

$$

PKZ351-041415-
Gulf of Alaska Offshore North of 57N and West of 144W-
303 PM AKST Tue Mar 3 2020

...GALE WARNING TONIGHT...

.TONIGHT...W wind 25 to 35 kt. Seas 13 to 17 ft. Freezing spray.
Snow showers.
.WED...NW wind 15 to 30 kt. Seas 9 to 16 ft. Freezing spray.
.WED NIGHT...N wind 20 to 30 kt. Seas 9 to 13 ft. Freezing spray.
.THU...N wind 15 to 30 kt. Seas 8 to 11 ft.
.THU NIGHT...N wind 10 to 25 kt. Seas 6 to 10 ft.
.FRI THROUGH SUN...SW wind up to 20 kt. Seas 4 to 9 ft.

$$

PKZ352-041415-
Gulf of Alaska Offshore South of 57N North of 55N and West of
144W-
303 PM AKST Tue Mar 3 2020

...GALE WARNING THROUGH WEDNESDAY NIGHT...

.TONIGHT...W wind 20 to 35 kt. Seas 14 to 17 ft. Freezing spray.
.WED...NW wind 20 to 35 kt. Seas 13 to 16 ft. Freezing spray.
.WED NIGHT...NW wind 20 to 35 kt. Seas 13 to 18 ft. Freezing
spray.
.THU...NW wind 20 to 35 kt. Seas 12 to 17 ft.
.THU NIGHT...NW wind 15 to 30 kt. Seas 8 to 13 ft.
.FRI THROUGH SUN...SW wind 10 to 25 kt. Seas 5 to 10 ft.

$$
529 
FZAK61 PAFC 041224
OFFAER

Offshore Waters Forecast
National Weather Service Anchorage AK
324 AM AKST Wed Mar 4 2020

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.

PKZ399-050215-
324 AM AKST Wed Mar 4 2020
.SYNOPSIS FOR THE WESTERN GULF OF ALASKA...

A 990 mb low at 60N 146W moves to 56N 143W at 996 mb by Thu
morning before dissipating Thu afternoon.

$$

PKZ351-050215-
Gulf of Alaska Offshore North of 57N and West of 144W-
324 AM AKST Wed Mar 4 2020

.TODAY...NW wind 15 to 30 kt. Seas 9 to 16 ft. Freezing spray.
.TONIGHT...N wind 20 to 30 kt. Seas 9 to 13 ft. Freezing spray.
.THU...N wind 15 to 30 kt. Seas 8 to 11 ft. Freezing spray.
.THU NIGHT...NW wind up to 20 kt. Seas 6 to 10 ft.
.FRI...S wind up to 10 kt. Seas 4 to 9 ft.
.SAT THROUGH SUN...SW wind up to 15 kt. Seas 3 to 7 ft.

$$

PKZ352-050215-
Gulf of Alaska Offshore South of 57N North of 55N and West of
144W-
324 AM AKST Wed Mar 4 2020

...GALE WARNING THROUGH THURSDAY...

.TODAY...NW wind 20 to 35 kt. Seas 13 to 16 ft. Freezing spray.
.TONIGHT...NW wind 25 to 40 kt. Seas 13 to 18 ft. Freezing spray.
.THU...NW wind 25 to 40 kt. Seas 12 to 18 ft. Freezing spray.
.THU NIGHT...NW wind 10 to 25 kt. Seas 8 to 13 ft.
.FRI THROUGH SUN...SW wind up to 20 kt. Seas 4 to 9 ft.

$$
795 
FZAK61 PAFC 050015
OFFAER

Offshore Waters Forecast
National Weather Service Anchorage AK
315 PM AKST Wed Mar 4 2020

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.

PKZ399-051400-
315 PM AKST Wed Mar 4 2020
.SYNOPSIS FOR THE WESTERN GULF OF ALASKA...
A 996 mb low at 58N 146W will move south and east of the area
tonight. Strong northerly to northwesterly flow will continue
through Thu afternoon, and weaken Thu night. On Fri a front will
move into the southwest Gulf.

$$

PKZ351-051400-
Gulf of Alaska Offshore North of 57N and West of 144W-
315 PM AKST Wed Mar 4 2020

.TONIGHT...N wind 20 to 30 kt. Seas 9 to 15 ft. Freezing spray.
.THU...N wind 15 to 30 kt. Seas 8 to 11 ft. Freezing spray.
.THU NIGHT...N wind 20 kt. Seas 6 to 10 ft. Freezing spray.
.FRI...Variable wind 10 kt. Seas 3 to 7 ft.
.FRI NIGHT...SE wind up to 10 kt. Seas 4 ft.
.SAT THROUGH MON...W wind 10 to 25 kt. Seas 5 to 10 ft.

$$

PKZ352-051400-
Gulf of Alaska Offshore South of 57N North of 55N and West of
144W-
315 PM AKST Wed Mar 4 2020

...GALE WARNING THROUGH THURSDAY...

.TONIGHT...NW wind 25 to 40 kt. Seas 13 to 18 ft. Freezing spray.
.THU...NW wind 25 to 40 kt. Seas 12 to 18 ft. Freezing spray.
.THU NIGHT...NW wind 15 to 25 kt. Seas 8 to 13 ft.
.FRI...SW wind up to 10 kt. Seas 3 to 8 ft.
.FRI NIGHT...SE wind up to 15 kt. Seas 4 to 7 ft.
.SAT THROUGH MON...W wind 10 to 25 kt. Seas 5 to 10 ft.

$$
455 
FZAK61 PAFC 051228
OFFAER

Offshore Waters Forecast
National Weather Service Anchorage AK
328 AM AKST Thu Mar 5 2020

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.

PKZ399-060215-
328 AM AKST Thu Mar 5 2020
.SYNOPSIS FOR THE WESTERN GULF OF ALASKA...
A 986 mb low near 55N 134W this morning will move to 57N 139W
at 1009 mb Friday morning. A 999 mb low at 55N 160W Friday 
morning will move across the southwestern Gulf Friday afternoon. A
1013 mb low will develop near 59N 141W Saturday morning. 

$$

PKZ351-060215-
Gulf of Alaska Offshore North of 57N and West of 144W-
328 AM AKST Thu Mar 5 2020

.TODAY...N wind 15 to 30 kt. Seas 8 to 11 ft. Freezing spray.
.TONIGHT...N wind 20 kt diminishing to 15 kt after midnight. Seas 6 
to 10 ft. Freezing spray.
.FRI...E wind up to 10 kt in the morning becoming variable 10 kt.
Seas 3 to 7 ft.
.FRI NIGHT...SE wind up to 10 kt. Seas 4 ft.
.SAT THROUGH MON...W wind 10 to 25 kt. Seas 5 to 10 ft.

$$

PKZ352-060215-
Gulf of Alaska Offshore South of 57N North of 55N and West of
144W-
328 AM AKST Thu Mar 5 2020

...GALE WARNING TODAY...

.TODAY...NW wind 25 to 40 kt. Seas 12 to 18 ft. Freezing spray.
.TONIGHT...NW wind 15 to 25 kt diminishing to 15 kt after midnight. 
Seas 8 to 13 ft.
.FRI...S winds at 10 kt. Seas 3 to 8 ft.
.FRI NIGHT...SE wind up to 15 kt. Seas 4 to 7 ft.
.SAT THROUGH SUN...SW wind at 15 kt. Seas 4 to 8 ft.
.MON...W wind at 25 kt. Seas 7 to 11 ft.

$$
332 
FZAK61 PAFC 060034
OFFAER

Offshore Waters Forecast
National Weather Service Anchorage AK
334 PM AKST Thu Mar 5 2020

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.

PKZ399-061415-
334 PM AKST Thu Mar 5 2020
.SYNOPSIS FOR THE WESTERN GULF OF ALASKA...
A 986 mb low near 56N 136W will move south and dissipate Fri. A 
999 mb low at 55N 160W Friday morning will move across the 
southwestern Gulf through Friday evening.

$$

PKZ351-061415-
Gulf of Alaska Offshore North of 57N and West of 144W-
334 PM AKST Thu Mar 5 2020

.TONIGHT...N wind 30 kt diminishing to 15 kt after midnight. Seas 7 
to 12 ft.
.FRI...Variable wind 10 kt becoming SE in the afternoon. Seas 4 to 7 ft.
.FRI NIGHT...SE wind 10 kt. Seas 4 ft.
.SAT...SW wind up to 15 kt. Seas 3 to 6 ft.
.SAT NIGHT...S wind 15 kt. Seas 5 to 8 ft.
.SUN THROUGH MON...W wind 15 to 25 kt. Seas 5 to 10 ft.
.TUE...W wind 15 to 30 kt. Seas 10 to 16 ft.

$$

PKZ352-061415-
Gulf of Alaska Offshore South of 57N North of 55N and West of
144W-
334 PM AKST Thu Mar 5 2020

.TONIGHT...NW wind 30 kt diminishing to 20 kt after midnight. Seas 
10 to 17 ft subsiding to 6 to 11 ft after midnight.
.FRI...N wind 15 kt becoming S in the afternoon. Seas 5 to 10 ft.
.FRI NIGHT...SE wind 10 to 15 kt. Seas 3 to 7 ft.
.SAT...SW wind up to 15 kt. Seas 3 to 8 ft.
.SAT NIGHT...SW wind 10 to 20 kt. Seas 8 ft.
.SUN THROUGH MON...W wind 10 to 25 kt. Seas 6 to 11 ft.
.TUE...W wind 20 to 35 kt. Seas 12 to 17 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 Feb 27, 4:10 PM AKST, 11 hours 25 minutes earlier.

Area forecast discussion, Feb 27, 4:10 PM AKST, 11 hours 25 minutes before
Southcentral and Southwest Alaska Forecast Discussion
National Weather Service Anchorage AK
410 PM AKST Thu Feb 27 2020

.ANALYSIS AND UPPER LEVELS...

An upper trough and associated surface low moving eastward over
the Gulf are still kicking off a few snow showers along the
eastern Gulf Coast. Generally fair skies were observed elsewhere
across Southcentral and across much of the southern Mainland.
Gusty outflow winds associated with the retreating low over the
Gulf were observed over the eastern Kenai Peninsula. A broad upper
through and weakening surface lows extended from west of Attu to
over the eastern Aleutians. Satellite imagery shows the early
stages of development of a surface low along a broad frontal
boundary over the western north Pacific.

&&

.MODEL DISCUSSION...
The most notable model difference occur Friday and Saturday with
the next low brewing over the western Pacific. This system
develops under a fairly strong upper jet and heads into the Bering
Sea later Friday. Center positioning of low is still in question,
but confidence at this point is moderate to high on gale to storm
force wind potential across the Aleutians and Bering Friday into
Saturday. Accumulating snow potential still looks reasonable for
Saturday and Saturday night from Bristol Bay to portions of
Southcentral.

&&

.AVIATION...
PANC...Generally VFR conditions are expected through this evening.
There is a possibility of IFR/LIFR ceiling and/or visibilities in
fog Friday morning. Light winds should prevail over the next 24
hrs.

&&

.SHORT TERM FORECAST SOUTHCENTRAL ALASKA (Days 1 through 3)...

Clear and dry conditions will prevail across much of Southcentral
through the first half of Saturday as a ridge of high pressure
builds across the western half of the state. For the Copper River
Basin and Delta, scattered cloud cover and the threat for an
isolated to scattered snow shower will remain in the forecast
through early tomorrow morning as a weak shortwave dives across
the eastern half of Southcentral overnight. With the ridge
situated over the interior and a surface low lingering in the
eastern Gulf, gusty northerly outflow winds will persist along the
immediate coast. With mainly clear and dry conditions for most of
the region, temperatures overnight tonight and tomorrow night
will drop to near zero around Cook Inlet to well below zero across
the Susitna Valley, interior Kenai Peninsula, and Copper River
Basin. High temperatures the next two days will range from the
single digits in the Copper River Basin, to lower to mid 20s from
Cook Inlet north to the Susitna Valley, to lower to mid 30s for
Kodiak City.

A frontal system is slated to enter the western Gulf late Friday
night, first impacting Kodiak Island with a mix of rain and snow
and gusty southeasterly winds. This system will then move toward
the central and northern Gulf for Saturday with a new triple-
point surface low developing, bringing widespread snowfall across
Southcentral late Saturday through Sunday. As the low tracks
toward Prince William Sound, a brief period of southeasterly gap
winds will develop from Passage Canal through Turnagain Arm. Right
now snow amounts look light across Cook Inlet and The Mat-Su
Valleys through Sunday, with a general 3 to 6 inches expected and
some areas of blowing snow in gap locations and along the
immediate Cook Inlet coast.

There is still some uncertainty regarding timing and position of
the developing low late Saturday into Sunday. Any shift in the
track will affect winds and snow amounts, especially along Cook
Inlet and the Anchorage Bowl. Stay tuned for updates.

&&

.SHORT TERM FORECAST SOUTHWEST ALASKA (Days 1 through 3)...

Generally clear conditions and weak offshore flow are expected
across Southwest Alaska through early Saturday. The next impactful
weather event for Southwest will be an approaching front
associated with a deep Bering low. This front will arrive to the
coast by Saturday morning. Gusty southeasterly winds and snow are
expected along Bristol Bay coastal locations for Saturday. This
combination of wind and snow may cause reduced visibility at
times. By Saturday afternoon, precipitation types become a little
less certain along the Alaska Peninsula, however current thinking
is that temperatures will warm enough to change snow over to a
rain/snow mix, and likely all rain by Saturday evening, especially
over the southern Alaska Peninsula. By Sunday, conditions are
still expected to remain unsettled as colder northerly flow
returns, allowing any lingering precipitation to change back over
to snow, especially over the Kuskokwim Delta coast.

&&

.SHORT TERM FORECAST BERING SEA/ALEUTIANS (Days 1 through 3)...

An active weather pattern across the Bering is expected for the
end of the week. By Friday morning, a leading front associated
with a deepening, storm force low approaches the western
Aleutians. Gusty southeasterly winds and a rain/snow mix is
expected initially as this front moves in across the Aleutian
Chain Friday morning. As warmer southerly flow works its way in, a
change to all rain is expected during the first half of the day
Friday. A Winter Storm Watch remains in effect for Shemya and
Amchitka from Friday afternoon through Saturday afternoon, where
precipitation is expected to remain all snow at this time.

By Friday evening, southwesterly storm force winds will move in
over the Rat Islands as the low center gradually lifts northward
into the western Bering. While the low looks to remain nearly
stationary for Saturday, northerly flow on the backside of the low
will allow colder air to wrap around. This will keep gusty
northerly winds in place for the western Aleutians through most of
the weekend.

Meanwhile for the rest of the Bering, the leading edge of the
front progresses eastward. By Friday evening, southerly gale force
winds will reach the Pribilofs and central Aleutians, and by
Saturday morning, this now weakening front will reach the eastern
Bering. As this front moves eastward, precipitation is expected to
spread across the Chain with snow possible at the onset, however
a quick transition to rain/snow mix and then all rain is likely.

&&

.MARINE (Days 3 through 5 Sun through Tue)...
Gale force winds will continue around the low in the western
Bering on Sunday then diminish to small craft range Sunday night.
Gales are expected from south of the Alaska Peninsula through the
Gulf Sunday and Sunday night associated with a low in the northern
Gulf. Winds are expected to be near storm force in the offshore
waters of the Gulf Sunday evening.

&&

.LONG TERM FORECAST (Days 4 through 7 Mon through Thu)...
An upper level trough will dig into southern Alaska Monday and
Tuesday then slide east Wednesday and Thursday, with the axis near
the Canadian border Thursday afternoon. High pressure over
extreme northeast Russia on Monday will slide eastward behind this
trough, pushing into the western Bering on Tuesday and into
western Alaska by Thursday. The Ensemble means are in fairly good
agreement, but the deterministic models are all over the place on
the details. Therefore the forecast confidence past Tuesday is
rather low.

&&

.AFC WATCHES/WARNINGS/ADVISORIES...
PUBLIC...Winter Storm Watch 191.
MARINE...Gale Warning 127 155 165 170 171 172 173 174 176 178 179
185 412 414.
Storm Warning 175 177 411 413.
Heavy Freezing Spray 129 130 412 414.
FIRE WEATHER...NONE.

&&

SYNOPSIS AND MODEL DISCUSSION...BC
SOUTHCENTRAL ALASKA...TM
SOUTHWEST ALASKA/BERING SEA/ALEUTIANS...KO
MARINE/LONG TERM...BL

The office that day

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

IssuedProductOfficeCountiesLasted
Feb 27, 3:11 PM AKSTGale WarningAFC25 hr
Feb 27, 3:11 PM AKSTSmall Craft AdvisoryAFC25 hr
Feb 27, 3:30 PM AKSTGale WarningAFC23 hr
Feb 27, 3:30 PM AKSTStorm WarningAFC23 hr
Feb 27, 3:30 PM AKSTHeavy Freezing Spray WarningAFC23 hr
Feb 27, 3:38 PM AKSTBrisk Wind AdvisoryAFC23 hr
Feb 27, 3:38 PM AKSTGale WarningAFC36 hr
Feb 27, 3:38 PM AKSTStorm WarningAFC12 hr
Feb 27, 9:16 PM AKSTWinter Weather AdvisoryAFC18 hr
Feb 28, 3:26 AM AKSTGale WarningAFC24 hr
Feb 28, 3:26 AM AKSTHeavy Freezing Spray WarningAFC11 hr
Feb 28, 3:28 AM AKSTGale WarningAFC48 hr
Feb 28, 3:34 AM AKSTGale WarningAFC4 days
Feb 28, 3:34 AM AKSTSmall Craft AdvisoryAFC4 days
Feb 28, 3:34 AM AKSTHeavy Freezing Spray WarningAFC24 hr
Feb 28, 2:42 PM AKSTGale WarningAFC37 hr
Feb 28, 2:42 PM AKSTStorm WarningAFC37 hr
Feb 28, 2:44 PM AKSTGale WarningAFC13 hr
Feb 28, 2:44 PM AKSTSmall Craft AdvisoryAFC13 hr
Feb 28, 2:44 PM AKSTStorm WarningAFC13 hr
Feb 28, 2:48 PM AKSTWinter Weather AdvisoryAFC57 hr

Nearby

Gale Warnings in Alaska, 2020Every gale warning in 2020

Sources

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