Small Craft Advisory 390, NWS Anchorage, AK

666 
FZAK52 PAFC 171139
CWFALU

Coastal Waters Forecast
National Weather Service Anchorage Alaska
339 AM AKDT Mon May 17 2021

Coastal Waters Forecast for Southwest Alaska+Bristol Bay+The
Alaska Peninsula Waters and the Aleutian Islands up to 100 nm out.

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.

PKZ199-180100-
339 AM AKDT Mon May 17 2021
.SYNOPSIS FOR SOUTHWEST ALASKA+BRISTOL BAY+THE ALASKA
PENINSULA WATERS AND THE ALEUTIAN ISLANDS...

A 1004 mb low in the North Pacific moves to 220 nm south of Dutch
Harbor at 998 mb Tue night. Its front moves over the Aleutian 
Islands Tue afternoon and then lifts slowly north into the 
southeastern Bering through Tue night

$$

PKZ150-180100-
South of the AK Peninsula Sitkinak to Castle Cape-
339 AM AKDT Mon May 17 2021

.TODAY...NW wind 15 kt. Seas 7 ft.
.TONIGHT...W wind 15 kt. Seas 5 ft.
.TUE...Variable wind 10 kt. Seas 4 ft.
.TUE NIGHT...S wind 25 kt. Seas 5 ft.
.WED THROUGH THU...SE wind 30 kt. Seas 11 ft.
.FRI...E wind 20 kt. Seas 10 ft.

$$

PKZ155-180100-
South of the AK Peninsula Castle Cape to Cape Sarichef-
339 AM AKDT Mon May 17 2021

...SMALL CRAFT ADVISORY TUESDAY...

.TODAY...Variable wind 10 kt. Seas 5 ft.
.TONIGHT...Variable wind 10 kt. Seas 4 ft.
.TUE...E wind 25 kt except SE 15 kt from the Shumagin Islands E.
Seas 5 ft.
.TUE NIGHT...E wind 30 kt. Seas 11 ft.
.WED...E wind 35 kt. Seas 11 ft.
.THU...E wind 15 kt. Seas 8 ft.
.FRI...N wind 15 kt. Seas 9 ft.

$$

PKZ160-180100-
Bristol Bay-
339 AM AKDT Mon May 17 2021

.TODAY...W wind 15 kt. Seas 3 ft. Areas of fog.
.TONIGHT...W wind 15 kt. Seas 3 ft.
.TUE...W wind 15 kt diminishing to 10 kt in the afternoon. Seas
2 ft.
.TUE NIGHT...S wind 10 kt. Seas 2 ft.
.WED THROUGH THU...E wind 30 kt. Seas 7 ft.
.FRI...NE wind 20 kt. Seas 4 ft.

$$

PKZ165-180100-
Port Heiden to Cape Sarichef-
339 AM AKDT Mon May 17 2021

.TODAY...Variable wind 10 kt. Seas 2 ft.
.TONIGHT...Variable wind 10 kt. Seas 2 ft.
.TUE...E wind 20 kt except variable 10 kt from Port Moller E. Seas
2 ft.
.TUE NIGHT...E wind 20 kt. Seas 4 ft.
.WED THROUGH THU...E wind 30 kt. Seas 9 ft.
.FRI...N wind 15 kt. Seas 6 ft.

$$

PKZ170-180100-
Cape Sarichef to Nikolski Bering Side-
339 AM AKDT Mon May 17 2021

.TODAY...Variable wind 10 kt. Seas 2 ft.
.TONIGHT...NE wind 15 kt. Seas 2 ft.
.TUE...E wind 20 kt. Seas 4 ft.
.TUE NIGHT...NE wind 25 kt. Seas 6 ft.
.WED...NE wind 30 kt. Seas 9 ft.
.THU...N wind 25 kt. Seas 9 ft.
.FRI...NW wind 20 kt. Seas 8 ft.

$$

PKZ171-180100-
Unalaska Bay-
339 AM AKDT Mon May 17 2021

.TODAY...Variable wind less than 10 kt. Seas 2 ft.
.TONIGHT...E wind 10 kt. Seas 2 ft.
.TUE...E wind 10 kt increasing to 15 kt in the afternoon. Seas 2
ft.
.TUE NIGHT...E wind 25 kt. Seas 4 ft.
.WED...NE wind 25 kt. Seas 5 ft.
.THU...NW wind 15 kt. Seas 5 ft.
.FRI...NW wind 20 kt. Seas 5 ft.

$$

PKZ172-180100-
Cape Sarichef to Nikolski Pacific Side-
339 AM AKDT Mon May 17 2021

...SMALL CRAFT ADVISORY TUESDAY...

.TODAY...E wind 15 kt. Seas 4 ft.
.TONIGHT...E wind 20 kt. Seas 5 ft.
.TUE...E wind 30 kt. Seas 9 ft.
.TUE NIGHT...E wind 35 kt. Seas 12 ft.
.WED...NE wind 35 kt. Seas 11 ft.
.THU THROUGH FRI...NW wind 20 kt. Seas 6 ft.

$$

PKZ173-180100-
Nikolski to Seguam Island Bering Side-
339 AM AKDT Mon May 17 2021

.TODAY...E wind 15 kt. Seas 3 ft.
.TONIGHT...E wind 15 kt. Seas 4 ft.
.TUE...NE wind 20 kt. Seas 5 ft.
.TUE NIGHT...NE wind 25 kt. Seas 7 ft.
.WED THROUGH THU...NW wind 30 kt. Seas 12 ft.
.FRI...NW wind 25 kt. Seas 10 ft.

$$

PKZ174-180100-
Nikolski to Seguam Island Pacific Side-
339 AM AKDT Mon May 17 2021

...SMALL CRAFT ADVISORY TONIGHT AND TUESDAY...

.TODAY...E wind 20 kt. Seas 4 ft.
.TONIGHT...E wind 25 kt. Seas 8 ft.
.TUE...NE wind 30 kt. Seas 10 ft.
.TUE NIGHT...NE wind 30 kt. Seas 10 ft.
.WED THROUGH THU...NW wind 30 kt. Seas 12 ft.
.FRI...NW wind 25 kt. Seas 10 ft.

$$

PKZ175-180100-
Seguam Island to Adak Bering Side-
339 AM AKDT Mon May 17 2021

.TODAY...E wind 15 kt. Seas 3 ft.
.TONIGHT...E wind 15 kt. Seas 3 ft.
.TUE...E wind 15 kt. Seas 4 ft.
.TUE NIGHT...NE wind 20 kt. Seas 5 ft.
.WED THROUGH THU...NW wind 30 kt. Seas 12 ft.
.FRI...W wind 20 kt. Seas 9 ft.

$$

PKZ176-180100-
Seguam Island to Adak Pacific Side-
339 AM AKDT Mon May 17 2021

...SMALL CRAFT ADVISORY TONIGHT AND TUESDAY...

.TODAY...NE wind 20 kt. Seas 6 ft.
.TONIGHT...NE wind 20 kt. Seas 8 ft.
.TUE...NE wind 25 kt. Seas 8 ft.
.TUE NIGHT...N wind 25 kt. Seas 8 ft.
.WED THROUGH THU...NW wind 30 kt. Seas 10 ft.
.FRI...W wind 25 kt. Seas 9 ft.

$$

PKZ177-180100-
Adak to Kiska-
339 AM AKDT Mon May 17 2021

.TODAY...E wind 15 kt. Seas 7 ft.
.TONIGHT...E wind 15 kt. Seas 7 ft.
.TUE...E wind 15 kt. Seas 6 ft.
.TUE NIGHT...N wind 15 kt. Seas 5 ft.
.WED THROUGH THU...W wind 20 kt. Seas 7 ft.
.FRI...SW wind 20 kt. Seas 6 ft.

$$

PKZ178-180100-
Kiska to Attu-
339 AM AKDT Mon May 17 2021

.TODAY...SE wind 15 kt. Seas 6 ft.
.TONIGHT...SE wind 15 kt. Seas 6 ft.
.TUE...Variable wind 10 kt. Seas 6 ft.
.TUE NIGHT...SW wind 20 kt. Seas 5 ft.
.WED THROUGH THU...SW wind 15 kt. Seas 6 ft.
.FRI...SW wind 25 kt. Seas 10 ft.

$$

PKZ179-180100-
Pribilof Islands Near Shore Waters-
339 AM AKDT Mon May 17 2021

.TODAY...Variable wind 10 kt. Seas 3 ft.
.TONIGHT...Variable wind 10 kt. Seas 2 ft.
.TUE...E wind 15 kt. Seas 2 ft.
.TUE NIGHT...E wind 20 kt. Seas 4 ft.
.WED THROUGH THU...N wind 30 kt. Seas 10 ft.
.FRI...NW wind 20 kt. Seas 6 ft.

$$

PKZ180-180100-
Kuskokwim Delta and Etolin Strait-
339 AM AKDT Mon May 17 2021

.TODAY...W wind 10 kt. Seas 2 ft.
.TONIGHT...W wind 15 kt becoming NW after midnight. Seas 2 ft.
.TUE...NW wind 10 kt. Seas 2 ft.
.TUE NIGHT...N wind 15 kt. Seas 3 ft.
.WED THROUGH THU...NE wind 30 kt. Seas 9 ft.
.FRI...N wind 15 kt. Seas 5 ft.

$$

PKZ181-180100-
North and West of Nunivak Island-
339 AM AKDT Mon May 17 2021

.TODAY...W wind 15 kt. Seas 2 ft.
.TONIGHT...W wind 15 kt. Seas 2 ft.
.TUE...Variable wind 10 kt. Seas 2 ft.
.TUE NIGHT...Variable wind 10 kt. Seas 2 ft.
.WED THROUGH THU...N wind 25 kt. Seas 5 ft.
.FRI...N wind 15 kt. Seas 3 ft.

$$

PKZ185-180100-
Saint Matthew Island Waters-
339 AM AKDT Mon May 17 2021

.TODAY...W wind 15 kt. Seas 3 ft.
.TONIGHT...Variable wind 10 kt. Seas 2 ft.
.TUE...Variable wind 10 kt E of Saint Matthew Island...S 15 kt W
of Saint Matthew Island. Seas 4 ft.
.TUE NIGHT...Variable wind 10 kt. Seas 4 ft.
.WED...NE wind 25 kt. Seas 5 ft.
.THU...N wind 25 kt. Seas 5 ft.
.FRI...NE wind 20 kt. Seas 5 ft.

$$

472 
FZAK52 PAFC 172319
CWFALU

Coastal Waters Forecast
National Weather Service Anchorage Alaska
319 PM AKDT Mon May 17 2021

Coastal Waters Forecast for Southwest Alaska+Bristol Bay+The
Alaska Peninsula Waters and the Aleutian Islands up to 100 nm out.

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.

PKZ199-181215-
319 PM AKDT Mon May 17 2021
.SYNOPSIS FOR SOUTHWEST ALASKA+BRISTOL BAY+THE ALASKA
PENINSULA WATERS AND THE ALEUTIAN ISLANDS...

A 1006 mb North Pacific low moves to 265 nm South of Dutch Harbor
at 989 mb by Wed afternoon. Its front moves over the Aleutians 
and Alaska Peninsula from Midday Tue through Wed afternoon. A 1003
mb low extends a front into the Western Aleutians for Wed afternoon.

$$

PKZ150-181215-
South of the AK Peninsula Sitkinak to Castle Cape-
319 PM AKDT Mon May 17 2021

...SMALL CRAFT ADVISORY TUESDAY NIGHT...

.TONIGHT...W wind 15 kt. Seas 5 ft.
.TUE...W wind 15 kt. Seas 4 ft.
.TUE NIGHT...S wind 20 kt becoming SE 30 kt after midnight. Seas
3 ft building to 7 ft after midnight.
.WED...E wind 30 kt. Seas 11 ft.
.WED NIGHT...E wind 25 kt. Seas 9 ft.
.THU...E wind 25 kt. Seas 9 ft.
.FRI...E wind 20 kt. Seas 10 ft.
.SAT...N wind 15 kt. Seas 6 ft.

$$

PKZ155-181215-
South of the AK Peninsula Castle Cape to Cape Sarichef-
319 PM AKDT Mon May 17 2021

...GALE WARNING TUESDAY NIGHT...

.TONIGHT...E wind 15 kt except W 10 kt from the Shumagin Islands E. 
Seas 4 ft.
.TUE...E wind 20 kt increasing to 30 kt in the afternoon. From the
Shumagin Islands E, variable wind 10 kt becoming SE 20 kt in the
afternoon. Seas 6 ft.
.TUE NIGHT...E wind 35 kt. Seas 11 ft. Rain.
.WED...E wind 30 kt. Seas 11 ft.
.WED NIGHT...E wind 25 kt. Seas 8 ft.
.THU...E wind 15 kt. Seas 8 ft.
.FRI...N wind 15 kt. Seas 9 ft.
.SAT...W wind 15 kt. Seas 6 ft.

$$

PKZ160-181215-
Bristol Bay-
319 PM AKDT Mon May 17 2021

.TONIGHT...W wind 20 kt. Seas 3 ft. Patchy fog.
.TUE...W wind 15 kt diminishing to 10 kt in the afternoon. Seas
2 ft. Patchy fog.
.TUE NIGHT...SW wind 10 kt becoming E after midnight. Seas 1 foot.
.WED AND WED NIGHT...E wind 25 kt. Seas 6 ft.
.THU...E wind 25 kt. Seas 7 ft.
.FRI...NE wind 20 kt. Seas 4 ft.
.SAT...NW wind 10 kt. Seas 1 foot.

$$

PKZ165-181215-
Port Heiden to Cape Sarichef-
319 PM AKDT Mon May 17 2021

...SMALL CRAFT ADVISORY TUESDAY NIGHT...

.TONIGHT...Variable wind 10 kt. Seas 2 ft.
.TUE...NE wind 20 kt. Seas 2 ft.
.TUE NIGHT...E wind 30 kt except 20 kt from Port Moller E. Seas 5 
ft.
.WED AND WED NIGHT...NE wind 30 kt. Seas 9 ft.
.THU...NE wind 25 kt. Seas 8 ft.
.FRI...N wind 15 kt. Seas 6 ft.
.SAT...Variable wind 10 kt. Seas 4 ft.

$$

PKZ170-181215-
Cape Sarichef to Nikolski Bering Side-
319 PM AKDT Mon May 17 2021

...SMALL CRAFT ADVISORY TUESDAY AND TUESDAY NIGHT...

.TONIGHT...NE wind 15 kt. Seas 3 ft.
.TUE...E wind 25 kt. Seas 5 ft.
.TUE NIGHT...NE wind 30 kt. Seas 7 ft.
.WED AND WED NIGHT...N wind 30 kt. Seas 10 ft.
.THU...N wind 30 kt. Seas 10 ft.
.FRI...NW wind 20 kt. Seas 8 ft.
.SAT...SW wind 15 kt. Seas 5 ft.

$$

PKZ171-181215-
Unalaska Bay-
319 PM AKDT Mon May 17 2021

...SMALL CRAFT ADVISORY TUESDAY NIGHT...

.TONIGHT...E wind 10 kt. Seas 2 ft.
.TUE...E wind 10 kt increasing to 20 kt in the afternoon. Seas 3 ft.
.TUE NIGHT...E wind 25 kt. Seas 4 ft. Rain.
.WED AND WED NIGHT...N wind 20 kt. Seas 6 ft.
.THU...NW wind 25 kt. Seas 8 ft.
.FRI...NW wind 20 kt. Seas 5 ft.
.SAT...SW wind 10 kt. Seas 2 ft.

$$

PKZ172-181215-
Cape Sarichef to Nikolski Pacific Side-
319 PM AKDT Mon May 17 2021

...GALE WARNING TUESDAY NIGHT...

.TONIGHT...E wind 20 kt. Seas 5 ft.
.TUE...E wind 30 kt. Seas 10 ft.
.TUE NIGHT...NE wind 35 kt. Seas 12 ft. Rain.
.WED...NE wind 30 kt. Seas 12 ft.
.WED NIGHT...NE wind 30 kt. Seas 8 ft.
.THU...N wind 30 kt. Seas 8 ft.
.FRI...NW wind 20 kt. Seas 6 ft.
.SAT...SW wind 15 kt. Seas 6 ft.

$$

PKZ173-181215-
Nikolski to Seguam Island Bering Side-
319 PM AKDT Mon May 17 2021

...SMALL CRAFT ADVISORY TUESDAY NIGHT...

.TONIGHT...E wind 20 kt. Seas 4 ft.
.TUE...NE wind 20 kt. Seas 5 ft.
.TUE NIGHT...NE wind 30 kt. Seas 8 ft.
.WED...N wind 30 kt. Seas 11 ft.
.WED NIGHT...N wind 35 kt. Seas 11 ft.
.THU...NW wind 35 kt. Seas 12 ft.
.FRI...NW wind 25 kt. Seas 10 ft.
.SAT...S wind 20 kt. Seas 6 ft.

$$

PKZ174-181215-
Nikolski to Seguam Island Pacific Side-
319 PM AKDT Mon May 17 2021

...SMALL CRAFT ADVISORY THROUGH TUESDAY NIGHT...

.TONIGHT...E wind 25 kt. Seas 8 ft.
.TUE...NE wind 30 kt. Seas 10 ft.
.TUE NIGHT...NE wind 30 kt. Seas 11 ft. Rain.
.WED...N wind 30 kt. Seas 11 ft.
.WED NIGHT...N wind 40 kt. Seas 14 ft.
.THU...NW wind 35 kt. Seas 13 ft.
.FRI...NW wind 25 kt. Seas 10 ft.
.SAT...SW wind 20 kt. Seas 6 ft.

$$

PKZ175-181215-
Seguam Island to Adak Bering Side-
319 PM AKDT Mon May 17 2021

...SMALL CRAFT ADVISORY TUESDAY NIGHT...

.TONIGHT...E wind 15 kt. Seas 3 ft.
.TUE...NE wind 15 kt. Seas 4 ft.
.TUE NIGHT...N wind 25 kt. Seas 6 ft.
.WED...N wind 25 kt. Seas 8 ft.
.WED NIGHT...NW wind 30 kt. Seas 9 ft.
.THU...NW wind 25 kt. Seas 11 ft.
.FRI...W wind 20 kt. Seas 9 ft.
.SAT...S wind 15 kt. Seas 7 ft.

$$

PKZ176-181215-
Seguam Island to Adak Pacific Side-
319 PM AKDT Mon May 17 2021

...SMALL CRAFT ADVISORY THROUGH TUESDAY NIGHT...

.TONIGHT...NE wind 20 kt. Seas 8 ft.
.TUE...NE wind 25 kt. Seas 8 ft.
.TUE NIGHT...N wind 25 kt. Seas 8 ft.
.WED AND WED NIGHT...NW wind 30 kt. Seas 10 ft.
.THU...NW wind 30 kt. Seas 10 ft.
.FRI...W wind 25 kt. Seas 9 ft.
.SAT...S wind 15 kt. Seas 7 ft.

$$

PKZ177-181215-
Adak to Kiska-
319 PM AKDT Mon May 17 2021

.TONIGHT...E wind 15 kt. Seas 7 ft.
.TUE...NE wind 15 kt. Seas 6 ft.
.TUE NIGHT...N wind 15 kt. Seas 5 ft.
.WED...NW wind 20 kt. Seas 5 ft.
.WED NIGHT...W wind 20 kt. Seas 6 ft.
.THU...W wind 20 kt. Seas 7 ft.
.FRI THROUGH SAT...S wind 20 kt. Seas 7 ft.

$$

PKZ178-181215-
Kiska to Attu-
319 PM AKDT Mon May 17 2021

.TONIGHT...S wind 15 kt. Seas 6 ft.
.TUE...S wind 15 kt. Seas 6 ft.
.TUE NIGHT...Variable wind 10 kt becoming SW 20 kt after midnight.
Seas 5 ft.
.WED...SW wind 20 kt. Seas 7 ft.
.WED NIGHT...SW wind 25 kt. Seas 8 ft.
.THU...SW wind 20 kt. Seas 8 ft.
.FRI...SW wind 25 kt. Seas 10 ft.
.SAT...SW wind 20 kt. Seas 9 ft.

$$

PKZ179-181215-
Pribilof Islands Near Shore Waters-
319 PM AKDT Mon May 17 2021

.TONIGHT...Variable wind 10 kt. Seas 2 ft.
.TUE...E wind 15 kt. Seas 2 ft.
.TUE NIGHT...E wind 20 kt. Seas 5 ft.
.WED...NE wind 25 kt. Seas 6 ft.
.WED NIGHT...N wind 30 kt. Seas 9 ft.
.THU...N wind 25 kt. Seas 9 ft.
.FRI...NW wind 20 kt. Seas 6 ft.
.SAT...S wind 15 kt. Seas 7 ft.

$$

PKZ180-181215-
Kuskokwim Delta and Etolin Strait-
319 PM AKDT Mon May 17 2021

.TONIGHT...W wind 15 kt becoming NW after midnight. Seas 2 ft.
.TUE...NW wind 10 kt. Seas 1 foot.
.TUE NIGHT...N wind 10 kt becoming NE 15 kt after midnight. Seas 2 
ft.
.WED AND WED NIGHT...NE wind 25 kt. Seas 7 ft.
.THU...NE wind 25 kt. Seas 8 ft.
.FRI...N wind 15 kt. Seas 5 ft.
.SAT...SW wind 15 kt. Seas 3 ft.

$$

PKZ181-181215-
North and West of Nunivak Island-
319 PM AKDT Mon May 17 2021

.TONIGHT...W wind 15 kt. Seas 2 ft.
.TUE...Variable wind 10 kt. Seas 1 foot.
.TUE NIGHT...NE wind 15 kt. Seas 2 ft.
.WED...NE wind 20 kt. Seas 3 ft.
.WED NIGHT...N wind 25 kt. Seas 6 ft.
.THU...N wind 20 kt. Seas 6 ft.
.FRI...N wind 15 kt. Seas 3 ft.
.SAT...S wind 15 kt. Seas 5 ft.

$$

PKZ185-181215-
Saint Matthew Island Waters-
319 PM AKDT Mon May 17 2021

.TONIGHT...Variable wind 10 kt. Seas 2 ft.
.TUE...Variable wind 10 kt. Seas 4 ft.
.TUE NIGHT...Variable wind 10 kt. Seas 4 ft.
.WED...E wind 15 kt. Seas 4 ft.
.WED NIGHT...E wind 20 kt. Seas 4 ft.
.THU...NE wind 25 kt. Seas 5 ft.
.FRI...NE wind 20 kt. Seas 5 ft.
.SAT...S wind 20 kt. Seas 11 ft.

$$

393 
FZAK52 PAFC 181142
CWFALU

Coastal Waters Forecast
National Weather Service Anchorage Alaska
342 AM AKDT Tue May 18 2021

Coastal Waters Forecast for Southwest Alaska+Bristol Bay+The
Alaska Peninsula Waters and the Aleutian Islands up to 100 nm out.

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.

PKZ199-190100-
342 AM AKDT Tue May 18 2021
.SYNOPSIS FOR SOUTHWEST ALASKA+BRISTOL BAY+THE ALASKA
PENINSULA WATERS AND THE ALEUTIAN ISLANDS...

A 1006 mb North Pacific low moves to 235 nm south of Dutch Harbor 
at 997 mb Tue night. The low continues to 300 nm southeast of
Dutch Harbor at 988 mb Wed night. Its front moves over the 
Aleutians and Alaska Peninsula from Midday Tue through Wed 
afternoon. Another 1003 mb low extends a front into the Western 
Bering Wed afternoon through Wed night.

$$

PKZ150-190100-
South of the AK Peninsula Sitkinak to Castle Cape-
342 AM AKDT Tue May 18 2021

...GALE WARNING WEDNESDAY...

.TODAY...W wind 15 kt. Seas 4 ft.
.TONIGHT...S wind 20 kt becoming SE 30 kt after midnight. Seas 7
ft.
.WED...E wind 35 kt. Seas 11 ft. Rain.
.WED NIGHT...E wind 30 kt. Seas 10 ft.
.THU...SE wind 25 kt. Seas 9 ft.
.FRI...E wind 15 kt. Seas 10 ft.
.SAT...NW wind 15 kt. Seas 8 ft.

$$

PKZ155-190100-
South of the AK Peninsula Castle Cape to Cape Sarichef-
342 AM AKDT Tue May 18 2021

...GALE WARNING TONIGHT AND WEDNESDAY...

.TODAY...E wind 20 kt increasing to 30 kt in the afternoon. From
the Shumagin Islands E, variable wind 10 kt becoming SE 20 kt in the
afternoon. Seas 6 ft.
.TONIGHT...E wind 35 kt. Seas 12 ft. Rain.
.WED...E wind 35 kt. Seas 10 ft. Rain.
.WED NIGHT...E wind 25 kt. Seas 8 ft.
.THU...E wind 15 kt. Seas 7 ft.
.FRI...NW wind 15 kt. Seas 8 ft.
.SAT...SW wind 15 kt. Seas 8 ft.

$$

PKZ160-190100-
Bristol Bay-
342 AM AKDT Tue May 18 2021

...SMALL CRAFT ADVISORY WEDNESDAY...

.TODAY...W wind 15 kt diminishing to 10 kt in the afternoon. Seas
2 ft. Patchy fog.
.TONIGHT...SW wind 10 kt becoming E after midnight. Seas 2 ft.
.WED...E wind 30 kt. Seas 3 ft building to 6 ft in the afternoon.
.WED NIGHT...E wind 30 kt. Seas 6 ft.
.THU...E wind 25 kt. Seas 7 ft.
.FRI...N wind 15 kt. Seas 3 ft.
.SAT...W wind 10 kt. Seas 3 ft.

$$

PKZ165-190100-
Port Heiden to Cape Sarichef-
342 AM AKDT Tue May 18 2021

...SMALL CRAFT ADVISORY TONIGHT AND WEDNESDAY...

.TODAY...NE wind 20 kt. Seas 2 ft.
.TONIGHT...E wind 30 kt except E 20 kt from Port Moller E. Seas
5 ft.
.WED...E wind 30 kt. Seas 8 ft. Rain.
.WED NIGHT...NE wind 30 kt. Seas 8 ft.
.THU...NE wind 25 kt. Seas 8 ft.
.FRI...NW wind 20 kt. Seas 6 ft.
.SAT...SW wind 15 kt. Seas 7 ft.

$$

PKZ170-190100-
Cape Sarichef to Nikolski Bering Side-
342 AM AKDT Tue May 18 2021

...GALE WARNING WEDNESDAY...

.TODAY...E wind 25 kt. Seas 4 ft.
.TONIGHT...NE wind 30 kt. Seas 7 ft.
.WED...NE wind 35 kt. Seas 10 ft. Rain.
.WED NIGHT...N wind 35 kt. Seas 10 ft.
.THU...NW wind 30 kt. Seas 10 ft.
.FRI...NW wind 25 kt. Seas 9 ft.
.SAT...S wind 20 kt. Seas 8 ft.

$$

PKZ171-190100-
Unalaska Bay-
342 AM AKDT Tue May 18 2021

...SMALL CRAFT ADVISORY TONIGHT...

.TODAY...E wind 20 kt. Seas 3 ft.
.TONIGHT...E wind 25 kt. Seas 4 ft. Rain.
.WED...NE wind 20 kt. Seas 5 ft. Rain.
.WED NIGHT...N wind 15 kt. Seas 5 ft.
.THU...NW wind 25 kt. Seas 7 ft.
.FRI...NW wind 20 kt. Seas 5 ft.
.SAT...S wind 10 kt. Seas 2 ft.

$$

PKZ172-190100-
Cape Sarichef to Nikolski Pacific Side-
342 AM AKDT Tue May 18 2021

...GALE WARNING TONIGHT AND WEDNESDAY...

.TODAY...E wind 30 kt. Seas 10 ft.
.TONIGHT...NE wind 35 kt. Seas 11 ft. Rain.
.WED...NE wind 35 kt. Seas 11 ft. Rain.
.WED NIGHT...NE wind 30 kt. Seas 8 ft.
.THU...NW wind 30 kt. Seas 8 ft.
.FRI...NW wind 25 kt. Seas 9 ft.
.SAT...S wind 20 kt. Seas 7 ft.

$$

PKZ173-190100-
Nikolski to Seguam Island Bering Side-
342 AM AKDT Tue May 18 2021

...GALE WARNING WEDNESDAY...

.TODAY...NE wind 20 kt. Seas 5 ft.
.TONIGHT...NE wind 25 kt. Seas 7 ft.
.WED...N wind 35 kt. Seas 11 ft. Rain.
.WED NIGHT...N wind 35 kt. Seas 11 ft.
.THU...NW wind 35 kt. Seas 11 ft.
.FRI...W wind 20 kt. Seas 10 ft.
.SAT...SE wind 20 kt. Seas 7 ft.

$$

PKZ174-190100-
Nikolski to Seguam Island Pacific Side-
342 AM AKDT Tue May 18 2021

...GALE WARNING WEDNESDAY...

.TODAY...NE wind 30 kt. Seas 10 ft.
.TONIGHT...NE wind 30 kt. Seas 10 ft.
.WED...N wind 35 kt. Seas 12 ft. Rain.
.WED NIGHT...N wind 40 kt. Seas 14 ft.
.THU...NW wind 35 kt. Seas 12 ft.
.FRI...W wind 25 kt. Seas 10 ft.
.SAT...SE wind 20 kt. Seas 6 ft.

$$

PKZ175-190100-
Seguam Island to Adak Bering Side-
342 AM AKDT Tue May 18 2021

...SMALL CRAFT ADVISORY TONIGHT AND WEDNESDAY...

.TODAY...NE wind 15 kt. Seas 4 ft.
.TONIGHT...N wind 25 kt. Seas 6 ft.
.WED...N wind 30 kt. Seas 8 ft.
.WED NIGHT...NW wind 30 kt. Seas 9 ft.
.THU...W wind 25 kt. Seas 9 ft.
.FRI...S wind 15 kt. Seas 10 ft.
.SAT...SE wind 20 kt. Seas 7 ft.

$$

PKZ176-190100-
Seguam Island to Adak Pacific Side-
342 AM AKDT Tue May 18 2021

...GALE WARNING WEDNESDAY...

.TODAY...NE wind 25 kt. Seas 8 ft.
.TONIGHT...N wind 25 kt. Seas 8 ft.
.WED...N wind 35 kt. Seas 10 ft.
.WED NIGHT...NW wind 35 kt. Seas 11 ft.
.THU...NW wind 30 kt. Seas 10 ft.
.FRI...S wind 15 kt. Seas 8 ft.
.SAT...SE wind 20 kt. Seas 7 ft.

$$

PKZ177-190100-
Adak to Kiska-
342 AM AKDT Tue May 18 2021

.TODAY...NE wind 15 kt. Seas 6 ft.
.TONIGHT...N wind 20 kt. Seas 5 ft.
.WED...NW wind 20 kt. Seas 5 ft.
.WED NIGHT...W wind 20 kt. Seas 6 ft.
.THU...W wind 20 kt. Seas 9 ft.
.FRI...S wind 15 kt. Seas 9 ft.
.SAT...S wind 20 kt. Seas 6 ft.

$$

PKZ178-190100-
Kiska to Attu-
342 AM AKDT Tue May 18 2021

.TODAY...S wind 15 kt. Seas 6 ft.
.TONIGHT...W wind 15 kt. Seas 5 ft.
.WED...SW wind 20 kt. Seas 7 ft.
.WED NIGHT...SW wind 25 kt. Seas 9 ft.
.THU...W wind 20 kt. Seas 9 ft.
.FRI...SE wind 20 kt. Seas 9 ft.
.SAT...SW wind 20 kt. Seas 8 ft.

$$

PKZ179-190100-
Pribilof Islands Near Shore Waters-
342 AM AKDT Tue May 18 2021

...SMALL CRAFT ADVISORY WEDNESDAY...

.TODAY...E wind 15 kt. Seas 2 ft.
.TONIGHT...E wind 20 kt. Seas 5 ft.
.WED...NE wind 25 kt. Seas 7 ft.
.WED NIGHT...N wind 30 kt. Seas 8 ft.
.THU...N wind 25 kt. Seas 9 ft.
.FRI...W wind 15 kt. Seas 5 ft.
.SAT...SE wind 20 kt. Seas 6 ft.

$$

PKZ180-190100-
Kuskokwim Delta and Etolin Strait-
342 AM AKDT Tue May 18 2021

...SMALL CRAFT ADVISORY WEDNESDAY...

.TODAY...NW wind 10 kt. Seas 2 ft.
.TONIGHT...N wind 10 kt becoming NE 20 kt after midnight. Seas 3
ft.
.WED...NE wind 30 kt. Seas 6 ft.
.WED NIGHT...NE wind 30 kt. Seas 8 ft.
.THU...NE wind 25 kt. Seas 8 ft.
.FRI...NW wind 15 kt. Seas 4 ft.
.SAT...SW wind 15 kt. Seas 4 ft.

$$

PKZ181-190100-
North and West of Nunivak Island-
342 AM AKDT Tue May 18 2021

.TODAY...Variable wind 10 kt. Seas 2 ft.
.TONIGHT...NE wind 15 kt. Seas 2 ft.
.WED...NE wind 20 kt. Seas 4 ft. 
.WED NIGHT...N wind 25 kt. Seas 5 ft.
.THU...N wind 20 kt. Seas 6 ft.
.FRI...W wind 15 kt. Seas 3 ft.
.SAT...SE wind 20 kt. Seas 5 ft.

$$

PKZ185-190100-
Saint Matthew Island Waters-
342 AM AKDT Tue May 18 2021

.TODAY...Variable wind 10 kt. Seas 4 ft.
.TONIGHT...Variable wind 10 kt. Seas 4 ft.
.WED...NE wind 20 kt E of Saint Matthew Island... variable 10 kt W
of Saint Matthew Island. Seas 4 ft.
.WED NIGHT...E wind 20 kt. Seas 4 ft.
.THU...NE wind 25 kt. Seas 5 ft.
.FRI...SW wind 20 kt. Seas 6 ft.
.SAT...SE wind 20 kt. Seas 7 ft.

$$

Southcentral and Southwest Alaska Forecast Discussion
National Weather Service Anchorage AK
426 AM AKDT Sun May 16 2021

.ANALYSIS AND UPPER LEVELS...

An upper level low was present to the southeast of Kodiak Island
this morning. Another upper level low is present to the southeast
of Dutch Harbor moving to the east. Generally northerly flow is
seen across much of the Bering with a third upper level low
present across the far northwest Bering Sea near east Russia.
Lastly, a fourth upper level low is present across the North Slope
with southern Mainland Alaska in between this low and the low
near Kodiak Island. At the surface, a low is seen moving towards
Prince William Sound which is bringing rain showers to Cordova,
Whittier, and the Valdez area. Besides the low near Prince William
Sound, much of the rest of Southcentral and Kodiak Island remains
quiet with partly to mostly cloudy conditions with an occasional
isolated shower and temperatures in the 40s with mid to upper 30s
in the Copper River Basin.

Southwest Alaska remains fairly quiet as well with offshore flow
leading to partly to mostly cloudy skies as well with a few
showers across the Middle Kuskokwim Valley. Temperatures area-wide
are generally in the 40s and the upper 30s. For the Aleutians and
the Bering Sea, much of the area remains quiet under weak
northerly flow and light winds with low stratus and fog for the
Pribilofs.

&&

.MODEL DISCUSSION...

Models are in great agreement on the synoptic scale features out
through Day 3. The main issues going into the forecast package
this morning are: local effect winds around Southcentral as well
as if a shower will make it off the Chugach Mountains and into the
Anchorage Bowl area later today. Out west, models are in general
good agreement as well with the main issue being how widespread
any shower activity will be across Bristol Bay and the Middle
Kuskokwim Valley and how much rainfall will result from it. Also,
instability is marginal, therefore, thunderstorms weren't included
in this forecast package. Across the Bering, the main issue is the
low stratus and fog and how expansive it will be due to high
pressure overhead.

&&

.AVIATION...
PANC...Mainly VFR conditions and light south to southwest winds
will persist for the TAF package. However, MVFR ceilings are
hovering around the terminal this morning, therefore, included a
TEMPO group in the TAF to account for this.

&&

.SHORT TERM FORECAST SOUTHCENTRAL ALASKA (Days 1 and 2: Today
through Monday Night)...

A mix of sun and clouds is expected for much of interior
Southcentral today. The front that brought the clouds, moisture,
and rain yesterday has fallen apart, leaving a moistened
atmosphere with weak winds. A surface low causing gusty conditions
early this morning in western Prince William Sound will move into
the Kenai Mountains south of Whittier today. This low should keep
the winds through Turnagain Arm much weaker today, as the
dominating flow becomes up-Inlet this afternoon. Elsewhere, sea
breezes will return today in the usual areas. Shower activity is
expected this afternoon, mainly across most of the mountains.
However, due to much weaker steering flow expected this afternoon,
the showers will remain nearly stationary or move very slowly.
Thus, most populated areas, except perhaps portions of the
Matanuska Valley, will remain dry today.

Ridging and associated warming temperatures in the upper levels on
Monday, along with westerly offshore flow, will effectively clear
out the atmosphere across Southcentral. The drier conditions, more
stable atmosphere, and subsidence will all work to make for a
gorgeous sunny day on Monday. The sunny skies will persist
throughout the day. Most areas will be several degrees warmer on
Monday as compared with today as well.

&&

.SHORT TERM FORECAST SOUTHWEST ALASKA (Days 1 and 2)...

A shortwave from the remnants of a low now south of the AKPen
moves across eastern Southwest, allowing for some lingering
showers across eastern Bristol Bay and the Kuskokwim Valley today
through the overnight hours. While most of the precipitation
should be confined to the mountains, some may spill into the lower
elevations at times. A high pressure ridge overtakes the
Kuskokwim Delta this afternoon. Clear and dry conditions filter
in from west to east as the ridge moves across the region.

&&

.SHORT TERM FORECAST BERING SEA/ALEUTIANS (Days 1 and 2)...

Light showers should start dying off this morning for the Eastern
Aleutians and the Southern AKPen as the remnants of a low pushes
south and dissipates. High pressure becomes the dominant force across
the Bering by this afternoon, keeping conditions dry and calm
through Tuesday. Light winds and waves are expected throughout the
forecast period. Flow ahead of the surface high will be northerly,
with southerly flow on the backside.

&&

.MARINE (Days 3 through 5: Tuesday through Thursday)...

High pressure with generally light winds across most of the
Bering through Thursday. A North Pacific low tracks just South of
the Aleutians for Thursday. Models in good agreement. The wind
wrapped North Pacific low brings small craft winds over the
Central Aleutians and Alaska Peninsula Wednesday, increasing to
gale force winds spreading into the Southern Bering Thursday. High
pressure moves across the Gulf. Gusty gap winds around Kodiak
Island Tuesday and Wed. Small craft winds with the approaching
low become gale force winds over the Western Gulf and Kodiak
Island Thursday. Seas to 12 feet south of Kodiak Island.

&&

.LONG TERM FORECAST (Days 3 through 7...Tue through Sat)...

Conditions will remain relatively quiet across the area for most
of this time period. The early part of the week will feature
weak flow over much of the mainland allowing for convection
along the mountains. Temperatures will continue to hold very close
to normal for mid-May. By next weekend, there are some signs of a
much more Summer-like pattern building over the state from the
east. Here are the details:

Tue and Wed, there will not be any dominant weather feature across
southern AK or the Aleutians. This will create partly cloudy
conditions for the mainland with afternoon showers possible each
day. As temperatures slowly warm in response to increasing
daylight/climatology, we could start to see some more thunderstorm
activity as we move towards the middle of the week. Any chance for
this will be centered along the thermal trough and near the
mountains. High temperatures will continue to hover in the mid 50s
to low 60s for locations further inland.

By Thu and Fri, a system dropping across the northwest Bering Sea
will phase with some energy over the North Pacific. The
interaction will be somewhere near the Central Aleutians and
result in a developing surface low. This system will bring a
return to wind and rain to the Eastern Aleutians and Alaska
Peninsula as it moves to the east. By Fri, this system will start
to bring rain back into Southwest AK and Kodiak Island. For
Southcentral, this low will struggle to make much progress inland
as a ridge of high pressure starts to build near the ALCAN border.
While there is still a moderate to high amount of uncertainty this
far out, there are indications that this ridge could start to
bring some of our warmest temperatures of the year thus far (850
mb/5000' at 10-15C). Generally this forecast leans on the EC and
GFS ensemble means to handle the uncertainty.

&&

.AFC WATCHES/WARNINGS/ADVISORIES...
PUBLIC...NONE.
MARINE...NONE.
FIRE WEATHER...NONE.

&&

SYNOPSIS AND MODEL DISCUSSION...MV
SOUTHCENTRAL ALASKA...JPW
SOUTHWEST ALASKA/BERING SEA/ALEUTIANS...KM
MARINE/LONG TERM...KZ/MO