Gale Warning 390, NWS Anchorage, AK

475 
FZAK52 PAFC 222322
CWFALU

Coastal Waters Forecast
National Weather Service Anchorage Alaska
322 PM AKDT Tue May 22 2018

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.

PKZ199-231230-
322 PM AKDT Tue May 22 2018
.SYNOPSIS FOR SOUTHWEST ALASKA+BRISTOL BAY+THE ALASKA
PENINSULA WATERS AND THE ALEUTIAN ISLANDS...
A 983 mb low over Shemya will move to 160 nm north of Adak at 988
mb by Wed afternoon and then to 185 nm west of Dutch Harbor at 
998 mb by Thu afternoon.

$$

PKZ150-231230-
South of the AK Peninsula Sitkinak to Castle Cape-
322 PM AKDT Tue May 22 2018

.TONIGHT...Variable wind 10 kt. Seas 5 ft.
.WED...SE wind 15 kt. Seas 4 ft.
.WED NIGHT...SE wind 15 kt. Seas 5 ft. Rain showers.
.THU AND THU NIGHT...S wind 15 kt. Seas 6 ft.
.FRI...E wind 15 kt. Seas 6 ft.
.SAT THROUGH SUN...Variable wind 10 kt. Seas 6 ft.

$$

PKZ155-231230-
South of the AK Peninsula Castle Cape to Cape Sarichef-
322 PM AKDT Tue May 22 2018

...SMALL CRAFT ADVISORY WEDNESDAY NIGHT...

.TONIGHT...SW wind 20 kt. Seas 5 ft. Rain.
.WED...S wind 20 kt. Seas 7 ft. Rain.
.WED NIGHT...SW wind 20 kt. Seas 8 ft.
.THU...SW wind 15 kt. Seas 9 ft.
.THU NIGHT...Variable wind 10 kt. Seas 8 ft.
.FRI...NE wind 15 kt. Seas 7 ft.
.SAT THROUGH SUN...NW wind 15 kt. Seas 6 ft.

$$

PKZ160-231230-
Bristol Bay-
322 PM AKDT Tue May 22 2018

...SMALL CRAFT ADVISORY WEDNESDAY...

.TONIGHT...SW wind 10 kt becoming SE 20 kt after midnight. Seas
3 ft.
.WED...SE wind 25 kt. Seas 5 ft.
.WED NIGHT...SE wind 20 kt. Seas 5 ft.
.THU...E wind 15 kt. Seas 3 ft.
.THU NIGHT...E wind 10 kt. Seas 3 ft.
.FRI...NE wind 10 kt. Seas 3 ft.
.SAT...NW wind 10 kt. Seas 5 ft.
.SUN...W wind 15 kt. Seas 5 ft.

$$

PKZ165-231230-
Port Heiden to Cape Sarichef-
322 PM AKDT Tue May 22 2018

.TONIGHT...Variable wind 10 kt becoming SE 20 kt after midnight. 
Seas 4 ft. Rain.
.WED...S wind 20 kt. Seas 4 ft. Rain.
.WED NIGHT...S wind 15 kt. Seas 5 ft.
.THU AND THU NIGHT...Variable wind 10 kt. Seas 5 ft.
.FRI...NE wind 15 kt. Seas 4 ft.
.SAT THROUGH SUN...NW wind 15 kt. Seas 6 ft.

$$

PKZ170-231230-
Cape Sarichef to Nikolski Bering Side-
322 PM AKDT Tue May 22 2018

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

.TONIGHT...SW wind 25 kt. Seas 8 ft.
.WED...SW wind 20 kt. Seas 7 ft.
.WED NIGHT...SW wind 20 kt. Seas 8 ft. Rain showers.
.THU...S wind 15 kt. Seas 8 ft.
.THU NIGHT...NE wind 15 kt. Seas 6 ft.
.FRI THROUGH SUN...NW wind 15 kt. Seas 5 ft.

$$

PKZ171-231230-
Unalaska Bay-
322 PM AKDT Tue May 22 2018

.TONIGHT...S wind 15 kt. Seas 2 ft.
.WED...SW wind 15 kt diminishing to 10 kt in the afternoon. Seas
2 ft. Rain showers.
.WED NIGHT...SW wind 10 kt. Seas 2 ft. Rain showers.
.THU...Variable wind less than 10 kt. Seas 2 ft.
.THU NIGHT...E wind 10 kt. Seas 3 ft.
.FRI...N wind 15 kt. Seas 4 ft.
.SAT THROUGH SUN...NW wind 10 kt. Seas 3 ft.

$$

PKZ172-231230-
Cape Sarichef to Nikolski Pacific Side-
322 PM AKDT Tue May 22 2018

...SMALL CRAFT ADVISORY THROUGH WEDNESDAY NIGHT...

.TONIGHT...SW wind 25 kt. Seas 8 ft.
.WED...SW wind 25 kt. Seas 10 ft.
.WED NIGHT...SW wind 25 kt. Seas 12 ft. Rain showers.
.THU...SW wind 20 kt. Seas 11 ft.
.THU NIGHT...Variable wind 10 kt. Seas 9 ft.
.FRI THROUGH SUN...NW wind 15 kt. Seas 6 ft.

$$

PKZ173-231230-
Nikolski to Seguam Island Bering Side-
322 PM AKDT Tue May 22 2018

...SMALL CRAFT ADVISORY THROUGH WEDNESDAY NIGHT...

.TONIGHT...SW wind 25 kt. Seas 8 ft. Rain showers.
.WED...SW wind 30 kt. Seas 10 ft. Rain showers.
.WED NIGHT...SW wind 25 kt. Seas 11 ft. Rain showers.
.THU...SW wind 15 kt. Seas 8 ft.
.THU NIGHT...N wind 15 kt. Seas 5 ft.
.FRI THROUGH SAT...NW wind 15 kt. Seas 5 ft.
.SUN...Variable wind 10 kt. Seas 5 ft.

$$

PKZ174-231230-
Nikolski to Seguam Island Pacific Side-
322 PM AKDT Tue May 22 2018

...SMALL CRAFT ADVISORY THROUGH WEDNESDAY NIGHT...

.TONIGHT...SW wind 30 kt. Seas 12 ft. Rain showers.
.WED...SW wind 30 kt. Seas 16 ft. Rain showers.
.WED NIGHT...SW wind 25 kt. Seas 16 ft. Rain showers.
.THU...W wind 20 kt. Seas 13 ft.
.THU NIGHT...NW wind 15 kt. Seas 9 ft.
.FRI...NW wind 20 kt. Seas 7 ft.
.SAT THROUGH SUN...NW wind 15 kt. Seas 6 ft.

$$

PKZ175-231230-
Seguam Island to Adak Bering Side-
322 PM AKDT Tue May 22 2018

...SMALL CRAFT ADVISORY THROUGH WEDNESDAY NIGHT...

.TONIGHT...SW wind 30 kt. Seas 10 ft. Rain showers.
.WED...SW wind 30 kt. Seas 12 ft. Rain showers.
.WED NIGHT...W wind 25 kt. Seas 10 ft. Rain showers.
.THU...W wind 20 kt. Seas 7 ft.
.THU NIGHT...N wind 20 kt. Seas 6 ft.
.FRI...NW wind 15 kt. Seas 5 ft.
.SAT THROUGH SUN...Variable wind 10 kt. Seas 4 ft.

$$

PKZ176-231230-
Seguam Island to Adak Pacific Side-
322 PM AKDT Tue May 22 2018

...GALE WARNING THROUGH WEDNESDAY...

.TONIGHT...SW wind 35 kt. Seas 17 ft. Rain showers.
.WED...SW wind 35 kt. Seas 20 ft. Rain showers.
.WED NIGHT...SW wind 30 kt. Seas 17 ft. Rain showers.
.THU...W wind 25 kt. Seas 13 ft.
.THU NIGHT...NW wind 20 kt. Seas 9 ft.
.FRI...NW wind 15 kt. Seas 7 ft.
.SAT THROUGH SUN...Variable wind 10 kt. Seas 6 ft.

$$

PKZ177-231230-
Adak to Kiska-
322 PM AKDT Tue May 22 2018

...GALE WARNING THROUGH WEDNESDAY...

.TONIGHT...SW wind 40 kt. Seas 14 ft Bering side...22 ft Pacific 
side. Rain showers.
.WED...W wind 35 kt. Seas 14 ft Bering side...21 ft Pacific side.
Rain showers.
.WED NIGHT...W wind 30 kt. Seas 9 ft Bering side...16 ft Pacific 
side.
.THU...NW wind 25 kt. Seas 10 ft.
.THU NIGHT...NW wind 20 kt. Seas 7 ft.
.FRI...N wind 15 kt. Seas 6 ft.
.SAT...Variable wind 10 kt. Seas 6 ft.
.SUN...Variable wind 10 kt. Seas 6 ft.

$$

PKZ178-231230-
Kiska to Attu-
322 PM AKDT Tue May 22 2018

...GALE WARNING TONIGHT...

.TONIGHT...W wind 40 kt. Seas 15 ft Bering side...22 ft Pacific
side. Rain showers.
.WED...NW wind 30 kt. Seas 16 ft.
.WED NIGHT...NW wind 20 kt. Seas 11 ft.
.THU AND THU NIGHT...N wind 20 kt. Seas 8 ft.
.FRI...Variable wind 10 kt. Seas 6 ft.
.SAT THROUGH SUN...Variable wind 10 kt. Seas 6 ft.

$$

PKZ179-231230-
Pribilof Islands Near Shore Waters-
322 PM AKDT Tue May 22 2018

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

.TONIGHT...SE wind 25 kt. Seas 6 ft. Rain.
.WED...S wind 15 kt. Seas 6 ft. Rain.
.WED NIGHT...SE wind 15 kt. Seas 8 ft.
.THU...E wind 15 kt. Seas 8 ft.
.THU NIGHT...NE wind 15 kt. Seas 7 ft.
.FRI THROUGH SUN...NW wind 15 kt. Seas 5 ft.

$$

PKZ180-231230-
Kuskokwim Delta and Etolin Strait-
322 PM AKDT Tue May 22 2018

...SMALL CRAFT ADVISORY WEDNESDAY...

.TONIGHT...SW wind 10 kt becoming SE 20 kt after midnight. Seas
3 ft.
.WED...SE wind 25 kt. Seas 6 ft.
.WED NIGHT...SE wind 20 kt. Seas 6 ft.
.THU...E wind 20 kt. Seas 5 ft.
.THU NIGHT...NE wind 15 kt. Seas 5 ft.
.FRI...N wind 20 kt. Seas 4 ft.
.SAT THROUGH SUN...NW wind 15 kt. Seas 5 ft.

$$

PKZ181-231230-
North and West of Nunivak Island-
322 PM AKDT Tue May 22 2018

...SMALL CRAFT ADVISORY WEDNESDAY...

.TONIGHT...E wind 20 kt. Seas 4 ft.
.WED...E wind 25 kt. Seas 6 ft.
.WED NIGHT...SE wind 20 kt. Seas 6 ft.
.THU...E wind 20 kt. Seas 6 ft.
.THU NIGHT...N wind 20 kt. Seas 6 ft.
.FRI THROUGH SAT...N wind 20 kt. Seas 6 ft.
.SUN...NW wind 15 kt. Seas 4 ft.

$$

PKZ185-231230-
Saint Matthew Island Waters-
322 PM AKDT Tue May 22 2018

...SMALL CRAFT ADVISORY THROUGH WEDNESDAY NIGHT...

.TONIGHT...E wind 25 kt. Seas 8 ft.
.WED...E wind 25 kt. Seas 10 ft.
.WED NIGHT...E wind 25 kt. Seas 10 ft.
.THU AND THU NIGHT...NE wind 20 kt. Seas 7 ft.
.FRI...N wind 20 kt. Seas 5 ft.
.SAT THROUGH SUN...NW wind 15 kt. Seas 5 ft.

$$

763 
FZAK52 PAFC 231200
CWFALU

Coastal Waters Forecast
National Weather Service Anchorage Alaska
400 AM AKDT Wed May 23 2018

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.

PKZ199-240100-
400 AM AKDT Wed May 23 2018
.SYNOPSIS FOR SOUTHWEST ALASKA+BRISTOL BAY+THE ALASKA
PENINSULA WATERS AND THE ALEUTIAN ISLANDS...
A 985 mb low 170 nm northwest of Adak moves 220 nm north of Adak at
992 mb tonight. The low then moves 70 nm southeast of Dutch Harbor at
1001 mb Thu night.

$$

PKZ150-240100-
South of the AK Peninsula Sitkinak to Castle Cape-
400 AM AKDT Wed May 23 2018

.TODAY...SE wind increasing to 20 kt. Seas 4 ft.
.TONIGHT...SE wind 20 kt. Seas 6 ft. Rain.
.THU...SW wind 15 kt. Seas 6 ft.
.THU NIGHT...S wind 15 kt. Seas 7 ft.
.FRI...E wind 15 kt. Seas 6 ft.
.SAT THROUGH SUN...NW wind 15 kt. Seas 6 ft.

$$

PKZ155-240100-
South of the AK Peninsula Castle Cape to Cape Sarichef-
400 AM AKDT Wed May 23 2018

...SMALL CRAFT ADVISORY TONIGHT AND THURSDAY...

.TODAY...SE wind 20 kt early becoming SW. Seas building to 7 ft. 
Rain.
.TONIGHT...SW wind 20 kt. Seas 8 ft.
.THU...SW wind 15 kt. Seas 9 ft.
.THU NIGHT...Variable wind 10 kt. Seas 8 ft.
.FRI...N wind 15 kt. Seas 7 ft.
.SAT THROUGH SUN...NW wind 20 kt. Seas 6 ft.

$$

PKZ160-240100-
Bristol Bay-
400 AM AKDT Wed May 23 2018

...SMALL CRAFT ADVISORY TODAY...

.TODAY...SE wind increasing to 25 kt. Seas building to 5 ft. Patchy 
fog VSBY less than 1SM.
.TONIGHT...SE wind 20 kt. Seas 4 ft.
.THU...E wind 20 kt. Seas 4 ft.
.THU NIGHT...E wind 15 kt. Seas 3 ft.
.FRI...NE wind 15 kt. Seas 3 ft.
.SAT...NW wind 15 kt. Seas 5 ft.
.SUN...W wind 20 kt. Seas 5 ft.

$$

PKZ165-240100-
Port Heiden to Cape Sarichef-
400 AM AKDT Wed May 23 2018

...SMALL CRAFT ADVISORY TODAY...

.TODAY...S wind 25 kt. Seas 4 ft. Rain.
.TONIGHT...Variable wind 10 kt. From Port Moller E, S wind 20 kt
in the evening becoming variable 10 kt. Seas 5 ft.
.THU...Variable wind 10 kt. Seas 6 ft.
.THU NIGHT...Variable wind 10 kt. Seas 6 ft.
.FRI...N wind 15 kt. Seas 5 ft.
.SAT THROUGH SUN...NW wind 20 kt. Seas 6 ft.

$$

PKZ170-240100-
Cape Sarichef to Nikolski Bering Side-
400 AM AKDT Wed May 23 2018

...SMALL CRAFT ADVISORY TONIGHT...

.TODAY...SW wind 20 kt. Seas 7 ft.
.TONIGHT...SW wind 20 kt. Seas 8 ft. Rain showers.
.THU...S wind 15 kt. Seas 7 ft.
.THU NIGHT...NE wind 15 kt. Seas 6 ft.
.FRI THROUGH SUN...NW wind 20 kt. Seas 5 ft.

$$

PKZ171-240100-
Unalaska Bay-
400 AM AKDT Wed May 23 2018

.TODAY...SW wind 15 kt diminishing to 10 kt in the afternoon. Gusts
to 25 kt in the morning. Seas 2 ft. Rain showers.
.TONIGHT...SW wind 10 kt. Seas 2 ft. Rain showers.
.THU...Variable wind less than 10 kt. Seas 2 ft. Rain showers.
.THU NIGHT...E wind 10 kt. Seas 3 ft.
.FRI THROUGH SUN...NW wind 15 kt. Seas 4 ft.

$$

PKZ172-240100-
Cape Sarichef to Nikolski Pacific Side-
400 AM AKDT Wed May 23 2018

...SMALL CRAFT ADVISORY THROUGH THURSDAY...

.TODAY...SW wind 25 kt. Seas building to 10 ft.
.TONIGHT...SW wind 25 kt. Seas 12 ft. Rain showers.
.THU...SW wind 20 kt. Seas 12 ft. Rain showers.
.THU NIGHT...W wind 15 kt. Seas 9 ft.
.FRI THROUGH SUN...NW wind 20 kt. Seas 7 ft.

$$

PKZ173-240100-
Nikolski to Seguam Island Bering Side-
400 AM AKDT Wed May 23 2018

...SMALL CRAFT ADVISORY THROUGH THURSDAY...

.TODAY...SW wind 25 kt. Seas 10 ft. Rain showers.
.TONIGHT...SW wind 25 kt. Seas 10 ft. Rain showers.
.THU...SW wind 20 kt. Seas 8 ft. Rain showers.
.THU NIGHT...N wind 15 kt. Seas 7 ft.
.FRI THROUGH SAT...NW wind 20 kt. Seas 5 ft.
.SUN...NW wind 15 kt. Seas 5 ft.

$$

PKZ174-240100-
Nikolski to Seguam Island Pacific Side-
400 AM AKDT Wed May 23 2018

...SMALL CRAFT ADVISORY THROUGH THURSDAY...

.TODAY...SW wind 30 kt. Seas building to 17 ft. Rain.
.TONIGHT...SW wind 30 kt. Seas 17 ft. Rain showers.
.THU...W wind 25 kt. Seas 13 ft. Rain.
.THU NIGHT...NW wind 20 kt. Seas 10 ft.
.FRI THROUGH SAT...NW wind 20 kt. Seas 6 ft.
.SUN...NW wind 15 kt. Seas 7 ft.

$$

PKZ175-240100-
Seguam Island to Adak Bering Side-
400 AM AKDT Wed May 23 2018

...SMALL CRAFT ADVISORY THROUGH TONIGHT...

.TODAY...SW wind 30 kt. Seas 12 ft. Rain showers.
.TONIGHT...W wind 25 kt. Seas 10 ft. Rain showers.
.THU...W wind 20 kt. Seas 7 ft.
.THU NIGHT...N wind 20 kt. Seas 5 ft.
.FRI THROUGH SUN...NW wind 15 kt. Seas 5 ft.

$$

PKZ176-240100-
Seguam Island to Adak Pacific Side-
400 AM AKDT Wed May 23 2018

...GALE WARNING TODAY...

.TODAY...SW wind 35 kt. Seas 20 ft. Rain.
.TONIGHT...W wind 30 kt. Seas 18 ft. Rain.
.THU...W wind 25 kt. Seas 13 ft.
.THU NIGHT...NW wind 20 kt. Seas 9 ft.
.FRI THROUGH SUN...NW wind 15 kt. Seas 7 ft.

$$

PKZ177-240100-
Adak to Kiska-
400 AM AKDT Wed May 23 2018

...GALE WARNING TODAY...

.TODAY...W wind 35 kt. Seas 14 ft Bering side...22 ft Pacific
side. Rain.
.TONIGHT...W wind 30 kt. Seas 9 ft Bering side...16 ft Pacific
side.
.THU...NW wind 20 kt. Seas 10 ft.
.THU NIGHT...NW wind 15 kt. Seas 7 ft.
.FRI...N wind 15 kt. Seas 5 ft.
.SAT...Variable wind 10 kt. Seas 7 ft.
.SUN...SE wind 20 kt. Seas 7 ft.

$$

PKZ178-240100-
Kiska to Attu-
400 AM AKDT Wed May 23 2018

...SMALL CRAFT ADVISORY THROUGH THURSDAY...

.TODAY...W wind 30 kt. Seas 16 ft. Rain showers.
.TONIGHT...NW wind 20 kt. Seas 10 ft.
.THU...NW wind 20 kt. Seas 8 ft.
.THU NIGHT...N wind 15 kt. Seas 6 ft.
.FRI...Variable wind 10 kt. Seas 5 ft.
.SAT...SE wind 15 kt. Seas 8 ft.
.SUN...SE wind 20 kt. Seas 8 ft.

$$

PKZ179-240100-
Pribilof Islands Near Shore Waters-
400 AM AKDT Wed May 23 2018

...SMALL CRAFT ADVISORY TONIGHT AND THURSDAY...

.TODAY...S wind 15 kt. Seas 5 ft. Patchy fog.
.TONIGHT...SE wind 15 kt. Seas 8 ft.
.THU...E wind 15 kt. Seas 8 ft.
.THU NIGHT...NE wind 20 kt. Seas 6 ft.
.FRI THROUGH SAT...NW wind 20 kt. Seas 5 ft.
.SUN...NW wind 15 kt. Seas 4 ft.

$$

PKZ180-240100-
Kuskokwim Delta and Etolin Strait-
400 AM AKDT Wed May 23 2018

...SMALL CRAFT ADVISORY TODAY...

.TODAY...SE wind increasing to 25 kt. Seas building to 6 ft. Rain.
.TONIGHT...SE wind 20 kt. Seas 6 ft.
.THU...E wind 20 kt. Seas 6 ft.
.THU NIGHT...NE wind 20 kt. Seas 5 ft.
.FRI THROUGH SUN...NW wind 20 kt. Seas 5 ft.

$$

PKZ181-240100-
North and West of Nunivak Island-
400 AM AKDT Wed May 23 2018

...SMALL CRAFT ADVISORY TODAY...

.TODAY...E wind increasing to 25 kt. Seas 6 ft.
.TONIGHT...E wind 20 kt. Seas 6 ft.
.THU...NE wind 20 kt. Seas 6 ft.
.THU NIGHT...N wind 25 kt. Seas 6 ft.
.FRI THROUGH SUN...NW wind 20 kt. Seas 5 ft.

$$

PKZ185-240100-
Saint Matthew Island Waters-
400 AM AKDT Wed May 23 2018

...SMALL CRAFT ADVISORY THROUGH THURSDAY...

.TODAY...E wind 25 kt. Seas 10 ft.
.TONIGHT...E wind 25 kt. Seas 10 ft.
.THU...NE wind 20 kt. Seas 9 ft.
.THU NIGHT...NE wind 20 kt. Seas 6 ft.
.FRI...N wind 20 kt. Seas 5 ft.
.SAT THROUGH SUN...NW wind 15 kt. Seas 4 ft.

$$

109 
FZAK52 PAFC 232347
CWFALU

Coastal Waters Forecast
National Weather Service Anchorage Alaska
347 PM AKDT Wed May 23 2018

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.

PKZ199-241230-
347 PM AKDT Wed May 23 2018
.SYNOPSIS FOR SOUTHWEST ALASKA+BRISTOL BAY+THE ALASKA
PENINSULA WATERS AND THE ALEUTIAN ISLANDS...
A 989 mb low 165 nm north of Adak moves to 180 nm west of Adak at
997 mb by Thu afternoon and then to 400 nm south of Sitkinak at 
995 mb by Fri afternoon.

$$

PKZ150-241230-
South of the AK Peninsula Sitkinak to Castle Cape-
347 PM AKDT Wed May 23 2018

.TONIGHT...SE wind 20 kt. Seas 6 ft. Rain showers.
.THU...SW wind 15 kt. Seas 7 ft.
.THU NIGHT...SW wind 15 kt. Seas 7 ft.
.FRI...E wind 15 kt. Seas 5 ft.
.FRI NIGHT...NE wind 20 kt. Seas 6 ft.
.SAT...N wind 20 kt. Seas 6 ft.
.SUN THROUGH MON...NW wind 15 kt. Seas 6 ft.

$$

PKZ155-241230-
South of the AK Peninsula Castle Cape to Cape Sarichef-
347 PM AKDT Wed May 23 2018

...SMALL CRAFT ADVISORY THROUGH THURSDAY NIGHT...

.TONIGHT...SW wind 20 kt. Seas 8 ft.
.THU...SW wind 15 kt. Seas 9 ft.
.THU NIGHT...Variable wind 10 kt. Seas 9 ft.
.FRI...NE wind 15 kt. Seas 7 ft.
.FRI NIGHT...N wind 20 kt. Seas 6 ft.
.SAT...NW wind 25 kt. Seas 7 ft.
.SUN...NW wind 20 kt. Seas 6 ft.
.MON...NW wind 15 kt. Seas 6 ft.

$$

PKZ160-241230-
Bristol Bay-
347 PM AKDT Wed May 23 2018

.TONIGHT...SE wind 20 kt. Seas 4 ft.
.THU...E wind 20 kt. Seas 4 ft.
.THU NIGHT...E wind 10 kt increasing to 15 kt after midnight. Seas
3 ft.
.FRI...NE wind 15 kt. Seas 3 ft.
.FRI NIGHT...N wind 15 kt. Seas 4 ft.
.SAT...NW wind 15 kt. Seas 5 ft.
.SUN...W wind 20 kt. Seas 5 ft.
.MON...W wind 15 kt. Seas 3 ft.

$$

PKZ165-241230-
Port Heiden to Cape Sarichef-
347 PM AKDT Wed May 23 2018

.TONIGHT...Variable wind 10 kt. From Port Moller E, S wind 20 kt
in the evening becoming variable 10 kt. Seas 5 ft.
.THU...Variable wind 10 kt. Seas 5 ft.
.THU NIGHT...Variable wind 10 kt. Seas 5 ft.
.FRI AND FRI NIGHT...N wind 20 kt. Seas 5 ft.
.SAT...NW wind 25 kt. Seas 9 ft.
.SUN...NW wind 20 kt. Seas 5 ft.
.MON...NW wind 15 kt. Seas 3 ft.

$$

PKZ170-241230-
Cape Sarichef to Nikolski Bering Side-
347 PM AKDT Wed May 23 2018

...SMALL CRAFT ADVISORY TONIGHT...

.TONIGHT...SW wind 20 kt. Seas 8 ft. Rain showers.
.THU...S wind 15 kt. Seas 7 ft.
.THU NIGHT...E wind 15 kt. Seas 5 ft.
.FRI AND FRI NIGHT...N wind 20 kt. Seas 6 ft.
.SAT...NW wind 25 kt. Seas 8 ft.
.SUN...NW wind 20 kt. Seas 4 ft.
.MON...W wind 15 kt. Seas 4 ft.

$$

PKZ171-241230-
Unalaska Bay-
347 PM AKDT Wed May 23 2018

.TONIGHT...SW wind 10 kt. Seas 2 ft. Rain showers.
.THU...Variable wind less than 10 kt becoming SE 10 kt in the
afternoon. Seas 2 ft. Rain showers.
.THU NIGHT...E wind 10 kt. Seas 3 ft. Rain showers.
.FRI AND FRI NIGHT...NW wind 20 kt. Seas 5 ft.
.SAT...NW wind 20 kt. Seas 7 ft.
.SUN...NW wind 15 kt. Seas 3 ft.
.MON...W wind 10 kt. Seas 3 ft.

$$

PKZ172-241230-
Cape Sarichef to Nikolski Pacific Side-
347 PM AKDT Wed May 23 2018

...SMALL CRAFT ADVISORY THROUGH THURSDAY NIGHT...

.TONIGHT...SW wind 25 kt. Seas 12 ft. Rain showers.
.THU...SW wind 20 kt. Seas 12 ft. Rain showers.
.THU NIGHT...SW wind 15 kt in the evening becoming variable 10 kt.
Seas 9 ft.
.FRI AND FRI NIGHT...NW wind 20 kt. Seas 7 ft.
.SAT...NW wind 25 kt. Seas 7 ft.
.SUN...NW wind 20 kt. Seas 6 ft.
.MON...W wind 15 kt. Seas 9 ft.

$$

PKZ173-241230-
Nikolski to Seguam Island Bering Side-
347 PM AKDT Wed May 23 2018

...SMALL CRAFT ADVISORY THROUGH THURSDAY...

.TONIGHT...SW wind 25 kt. Seas 10 ft. Rain showers.
.THU...SW wind 20 kt. Seas 8 ft.
.THU NIGHT...N wind 20 kt. Seas 6 ft.
.FRI AND FRI NIGHT...NW wind 20 kt. Seas 5 ft.
.SAT...NW wind 20 kt. Seas 6 ft.
.SUN...NW wind 15 kt. Seas 5 ft.
.MON...SW wind 15 kt. Seas 6 ft.

$$

PKZ174-241230-
Nikolski to Seguam Island Pacific Side-
347 PM AKDT Wed May 23 2018

...SMALL CRAFT ADVISORY THROUGH THURSDAY NIGHT...

.TONIGHT...SW wind 30 kt. Seas 17 ft. Rain showers.
.THU...SW wind 25 kt. Seas 13 ft. Rain.
.THU NIGHT...W wind 20 kt. Seas 10 ft.
.FRI AND FRI NIGHT...NW wind 20 kt. Seas 7 ft.
.SAT...NW wind 20 kt. Seas 6 ft.
.SUN...NW wind 15 kt. Seas 7 ft.
.MON...SW wind 20 kt. Seas 11 ft.

$$

PKZ175-241230-
Seguam Island to Adak Bering Side-
347 PM AKDT Wed May 23 2018

...SMALL CRAFT ADVISORY TONIGHT...

.TONIGHT...W wind 25 kt. Seas 10 ft. Rain showers.
.THU...W wind 20 kt. Seas 6 ft.
.THU NIGHT...NW wind 20 kt. Seas 6 ft.
.FRI AND FRI NIGHT...NW wind 15 kt. Seas 5 ft.
.SAT THROUGH SUN...NW wind 15 kt. Seas 5 ft.
.MON...SW wind 20 kt. Seas 5 ft.

$$

PKZ176-241230-
Seguam Island to Adak Pacific Side-
347 PM AKDT Wed May 23 2018

...SMALL CRAFT ADVISORY THROUGH THURSDAY NIGHT...

.TONIGHT...W wind 30 kt. Seas 18 ft. Rain showers.
.THU...W wind 25 kt. Seas 13 ft.
.THU NIGHT...NW wind 20 kt. Seas 9 ft.
.FRI...NW wind 20 kt. Seas 7 ft.
.FRI NIGHT...NW wind 15 kt. Seas 5 ft.
.SAT THROUGH SUN...NW wind 15 kt. Seas 8 ft.
.MON...SW wind 20 kt. Seas 11 ft.

$$

PKZ177-241230-
Adak to Kiska-
347 PM AKDT Wed May 23 2018

...SMALL CRAFT ADVISORY THROUGH THURSDAY...

.TONIGHT...W wind 30 kt. Seas 9 ft Bering side...16 ft Pacific
side.
.THU...NW wind 20 kt. Seas 10 ft.
.THU NIGHT...NW wind 20 kt. Seas 7 ft.
.FRI...N wind 15 kt. Seas 5 ft.
.FRI NIGHT...Variable wind 10 kt. Seas 4 ft.
.SAT...NW wind 15 kt. Seas 7 ft.
.SUN THROUGH MON...S wind 20 kt. Seas 9 ft.

$$

PKZ178-241230-
Kiska to Attu-
347 PM AKDT Wed May 23 2018

...SMALL CRAFT ADVISORY THROUGH THURSDAY...

.TONIGHT...NW wind 20 kt. Seas 10 ft.
.THU...NW wind 20 kt. Seas 8 ft.
.THU NIGHT...N wind 15 kt. Seas 7 ft.
.FRI...Variable wind 10 kt. Seas 6 ft.
.FRI NIGHT...E wind 15 kt. Seas 4 ft.
.SAT...SE wind 25 kt. Seas 8 ft.
.SUN THROUGH MON...S wind 20 kt. Seas 8 ft.

$$

PKZ179-241230-
Pribilof Islands Near Shore Waters-
347 PM AKDT Wed May 23 2018

...SMALL CRAFT ADVISORY THROUGH THURSDAY...

.TONIGHT...SE wind 15 kt. Seas 8 ft.
.THU...E wind 15 kt. Seas 8 ft.
.THU NIGHT...NE wind 20 kt. Seas 6 ft.
.FRI...N wind 20 kt. Seas 5 ft.
.FRI NIGHT...N wind 25 kt. Seas 7 ft.
.SAT...NW wind 25 kt. Seas 6 ft.
.SUN...NW wind 15 kt. Seas 4 ft.
.MON...Variable wind 10 kt. Seas 4 ft.

$$

PKZ180-241230-
Kuskokwim Delta and Etolin Strait-
347 PM AKDT Wed May 23 2018

.TONIGHT...SE wind 20 kt. Seas 6 ft.
.THU...E wind 20 kt. Seas 6 ft.
.THU NIGHT...N wind 15 kt. Seas 4 ft. Patchy fog.
.FRI...N wind 15 kt. Seas 4 ft.
.FRI NIGHT...N wind 25 kt. Seas 6 ft.
.SAT...NW wind 25 kt. Seas 6 ft.
.SUN...NW wind 20 kt. Seas 5 ft.
.MON...NW wind 15 kt. Seas 3 ft.

$$

PKZ181-241230-
North and West of Nunivak Island-
347 PM AKDT Wed May 23 2018

...SMALL CRAFT ADVISORY THURSDAY NIGHT...

.TONIGHT...E wind 20 kt. Seas 6 ft. Patchy fog.
.THU...NE wind 20 kt. Seas 6 ft.
.THU NIGHT...N wind 25 kt. Seas 6 ft. Patchy fog.
.FRI...N wind 20 kt. Seas 6 ft.
.FRI NIGHT...N wind 25 kt. Seas 6 ft.
.SAT THROUGH SUN...NW wind 20 kt. Seas 4 ft.
.MON...NW wind 15 kt. Seas 3 ft.

$$

PKZ185-241230-
Saint Matthew Island Waters-
347 PM AKDT Wed May 23 2018

...SMALL CRAFT ADVISORY THROUGH THURSDAY...

.TONIGHT...E wind 25 kt. Seas 10 ft.
.THU...NE wind 20 kt. Seas 9 ft.
.THU NIGHT...NE wind 20 kt. Seas 6 ft. Patchy fog.
.FRI AND FRI NIGHT...NW wind 20 kt. Seas 6 ft.
.SAT...NW wind 20 kt. Seas 4 ft.
.SUN...NW wind 15 kt. Seas 4 ft.
.MON...E wind 15 kt. Seas 5 ft.

$$

Southcentral and Southwest Alaska Forecast Discussion
National Weather Service Anchorage AK
514 PM AKDT Mon May 21 2018

.ANALYSIS AND UPPER LEVELS...

The pattern that has been observed over the last week has no signs
of letting up as a long wave troughs persists over the Bering Sea
and southern mainland Alaska. The upper level low that once lived
in the eastern Bering has entered the southwestern Gulf. This
system is setting the stage for several more fronts to advance
toward the northern Gulf. These fronts are the cause of the dense
cloud cover and showers along the North Gulf Coast which are now
migrating into the western Kenai Peninsula. Trailing the trough is
a minimal ridge over the Bering. West of the ridge, a second
trough is barreling toward the western Aleutians.

A second surface low, stemming from Kamchatka, is advancing
toward the western Aleutians preceded by a strong front. The jet
stream skirting just south of the western Aleutians is strong
along the frontal boundary and is reaching speeds of 150 kts
within the jet streak. The placement of the jet stream is helping
to intensify this surface low. The result is most locations in
the Aleutians are experiencing surface winds exceeding 25 kts with
clouds and rain coating the chain behind the front.

&&

.MODEL DISCUSSION...
Models initialized well and move forward in lock step through 48
hours. We begin to see some deviation in the GFS and NAM,
especially in the Western Gulf, as the upper-level trough becomes
more negatively- tilted and deepens into the weekend.

Southcentral forecasters preferred the NAM. The Aleutian and
Southwestern Alaska forecaster preferred a primarily-NAM solution
today, with just a hint of GFS.

&&

.AVIATION...
PANC...VFR conditions will persist under a persistent broken deck.
Late-day and evening winds along the Turnagain Arm will be
probable the next few days.

&&

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

Widespread rain and cloud cover will continue from the Kenai
Peninsula to the Copper River Delta as a cross- barrier flow
continues over the coastal marine zones through Tuesday afternoon.
This is in response to a nearly stationary low pressure system in
the southern Gulf pushing yet another front northward overnight.
Precipitation and cloud cover will be more widely scattered for
interior portions of Southcentral Alaska, including Cook Inlet,
as the general southeasterly flow creates downsloping winds off
the Chugach Mountains. A strengthening thermal trough over the
interior and high pressure building along the coastal ranges will
generate gusty south to southeast winds in Turnagain Arm, the Knik
River Valley, and along portions of the Copper River during the
afternoon and evening hours Tuesday and Wednesday.

&&

.SHORT TERM FORECAST SOUTHWEST ALASKA (Days 1 and 2)...
The thermal trough stretched across Southwest Alaska today will
continue to bring a good potential for isolated to widely
scattered thunderstorms this evening. The best chance for
thunderstorms looks to be along and just to the west of the
thermal trough axis stretching from the middle Kuskokwim Valley
south into the Greater Bristol Bay area extending south to the
coast just to the east of Dillingham. With instability diminished
on Tuesday, precipitation should remain showery and limited in
coverage. The same general pattern will continue on Wednesday,
although with inland shower coverage more isolated, and a
dissipating frontal system approaching the coast by Wednesday
night.

&&

.SHORT TERM FORECAST BERING SEA/ALEUTIANS (Days 1 and 2)...
An upper level ridge will track from west to east across the
Aleutians and Bering tonight, with a frontal system currently
tracking eastward over the western Aleutians. The front will slow
and shear apart as it continues east Tuesday and Tuesday night
before stalling over the eastern Bering and Alaska Peninsula
Wednesday and then dissipating Wednesday night. The large
vertically stacked parent low will follow, crossing the western
Aleutians Tuesday afternoon and then continuing slowly east to the
south central Bering through Wednesday night.

&&

.LONG TERM FORECAST (Days 3 through 7)...
The long term forecast begins Thursday with a weak surface low
rotating in the Southern Gulf spreading clouds and rain showers across
the Gulf Coast and most of Southcentral. This system will slowly
fill in and die out, though persistent onshore flow will lead to
clouds and rain, especially along coastal areas on Friday. Another
low will rapidly move in from the west on Saturday providing no
real break in the weather for the Gulf Coast and no prolonged
periods of sun and warm weather for the inland areas. This low
will remain in the Gulf through most of the long holiday weekend
as a stubborn long wave ridge over the Western US will continue
to direct systems north into the Alaskan mainland. The pattern
doesn't look to be a total washout though, especially for more
inland areas, with breaks in between individual waves bringing
periodic dry weather, though coastal areas look to remain rather
cloudy and wet. Models do show this system slowly moving off to
the east on Memorial Day (Monday) providing a better chance of
decent weather for the holiday. High pressure looks to build in
over Western AK for the later half of the weekend, though
afternoon showers/thunderstorms should develop over the higher
terrain and may drift over more populated areas.

Out West, a long wave ridge will build in over the Western Bering
by the weekend bringing drier northerly flow to the western two-
thirds of the Bering/Aleutians. There is some disagreement between
models with the next system coming into the Western Aleutians but
it appears the ridge looks to hold through most of the weekend.

&&

.AFC WATCHES/WARNINGS/ADVISORIES...
PUBLIC...None.
MARINE...None.

&&

SYNOPSIS AND MODEL DISCUSSION...RA/DS
SOUTHCENTRAL ALASKA...TM/DK
SOUTHWEST ALASKA/BERING SEA/ALEUTIANS...TP
LONG TERM...KVP