Small Craft Advisory 415, NWS Anchorage, AK

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.

$$

864 
FZAK52 PAFC 241155
CWFALU

Coastal Waters Forecast
National Weather Service Anchorage Alaska
355 AM AKDT Thu May 24 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.

PKZ199-250045-
355 AM AKDT Thu May 24 2018
.SYNOPSIS FOR SOUTHWEST ALASKA+BRISTOL BAY+THE ALASKA
PENINSULA WATERS AND THE ALEUTIAN ISLANDS...
A 994 mb low 140 nm north of Atka moves to 30 nm west of Dutch 
Harbor by early Fri morning at 1002 mb by early Fri morning, then
tracks south into the North Pacific while dissipating by Fri 
afternoon.

$$

PKZ150-250045-
South of the AK Peninsula Sitkinak to Castle Cape-
355 AM AKDT Thu May 24 2018

.TODAY...SW wind 15 kt. Seas 6 ft.
.TONIGHT...SW wind 15 kt. Seas 6 ft.
.FRI...SE wind 15 kt. Seas 6 ft.
.FRI NIGHT...NE wind 15 kt. Seas 6 ft.
.SAT...N wind 20 kt. Seas 6 ft.
.SUN...NW wind 20 kt. Seas 6 ft.
.MON...W wind 20 kt. Seas 10 ft.

$$

PKZ155-250045-
South of the AK Peninsula Castle Cape to Cape Sarichef-
355 AM AKDT Thu May 24 2018

...SMALL CRAFT ADVISORY THROUGH TONIGHT...

.TODAY...W wind 15 kt. Seas 9 ft.
.TONIGHT...Variable wind 10 kt. Seas 8 ft.
.FRI...N wind 15 kt. Seas 7 ft.
.FRI NIGHT...N wind 25 kt. Seas 7 ft.
.SAT THROUGH SUN...NW wind 25 kt. Seas 7 ft.
.MON...SW wind 25 kt. Seas 11 ft.

$$

PKZ160-250045-
Bristol Bay-
355 AM AKDT Thu May 24 2018

.TODAY...E wind 15 kt. Seas 3 ft.
.TONIGHT...NE wind 15 kt. Seas 3 ft.
.FRI...N wind 20 kt. Seas 4 ft.
.FRI NIGHT...N wind 20 kt. Seas 4 ft.
.SAT THROUGH SUN...W wind 20 kt. Seas 6 ft.
.MON...SW wind 15 kt. Seas 3 ft.

$$

PKZ165-250045-
Port Heiden to Cape Sarichef-
355 AM AKDT Thu May 24 2018

.TODAY...Variable wind 10 kt. Seas 5 ft.
.TONIGHT...Variable wind 10 kt. Seas 5 ft.
.FRI...N wind 20 kt. Seas 4 ft.
.FRI NIGHT...N wind 25 kt. Seas 6 ft.
.SAT...NW wind 25 kt. Seas 9 ft.
.SUN...NW wind 20 kt. Seas 6 ft.
.MON...S wind 20 kt. Seas 5 ft.

$$

PKZ170-250045-
Cape Sarichef to Nikolski Bering Side-
355 AM AKDT Thu May 24 2018

.TODAY...S wind 15 kt. Seas 7 ft.
.TONIGHT...E wind 15 kt. Seas 5 ft.
.FRI...NE wind 20 kt. Seas 5 ft.
.FRI NIGHT...N wind 20 kt. Seas 6 ft.
.SAT...NW wind 25 kt. Seas 8 ft.
.SUN...W wind 20 kt. Seas 5 ft.
.MON...S wind 25 kt. Seas 8 ft.

$$

PKZ171-250045-
Unalaska Bay-
355 AM AKDT Thu May 24 2018

.TODAY...Variable wind less than 10 kt. Seas 2 ft. Rain showers.
.TONIGHT...Variable wind less than 10 kt becoming E 10 kt after
midnight. Seas 2 ft. Rain showers.
.FRI...NE wind 10 kt becoming N in the afternoon. Seas 3 ft.
.FRI NIGHT...NW wind 20 kt. Seas 5 ft.
.SAT...NW wind 20 kt. Seas 7 ft.
.SUN...W wind 15 kt. Seas 3 ft.
.MON...S wind 20 kt. Seas 3 ft.

$$

PKZ172-250045-
Cape Sarichef to Nikolski Pacific Side-
355 AM AKDT Thu May 24 2018

...SMALL CRAFT ADVISORY THROUGH TONIGHT...

.TODAY...SW wind 20 kt. Seas 12 ft.
.TONIGHT...SW wind 15 kt. Seas 9 ft.
.FRI...N wind 20 kt. Seas 7 ft.
.FRI NIGHT...NW wind 25 kt. Seas 7 ft.
.SAT...NW wind 25 kt. Seas 8 ft.
.SUN...W wind 20 kt. Seas 7 ft.
.MON...S wind 25 kt. Seas 13 ft.

$$

PKZ173-250045-
Nikolski to Seguam Island Bering Side-
355 AM AKDT Thu May 24 2018

...SMALL CRAFT ADVISORY TODAY...

.TODAY...SW wind 15 kt. Seas 8 ft. Rain showers.
.TONIGHT...N wind 20 kt. Seas 5 ft.
.FRI...N wind 20 kt. Seas 6 ft.
.FRI NIGHT...N wind 20 kt. Seas 5 ft.
.SAT...NW wind 20 kt. Seas 6 ft.
.SUN...SW wind 20 kt. Seas 7 ft.
.MON...S wind 25 kt. Seas 9 ft.

$$

PKZ174-250045-
Nikolski to Seguam Island Pacific Side-
355 AM AKDT Thu May 24 2018

...SMALL CRAFT ADVISORY THROUGH TONIGHT...

.TODAY...SW wind 25 kt. Seas 13 ft. Rain.
.TONIGHT...W wind 15 kt. Seas 10 ft.
.FRI...N wind 20 kt. Seas 7 ft.
.FRI NIGHT...NW wind 20 kt. Seas 6 ft.
.SAT...NW wind 20 kt. Seas 6 ft.
.SUN...SW wind 25 kt. Seas 9 ft.
.MON...S wind 25 kt. Seas 13 ft.

$$

PKZ175-250045-
Seguam Island to Adak Bering Side-
355 AM AKDT Thu May 24 2018

.TODAY...W wind 20 kt. Seas 6 ft.
.TONIGHT...N wind 20 kt. Seas 6 ft.
.FRI...N wind 15 kt. Seas 5 ft.
.FRI NIGHT...NW wind 15 kt. Seas 4 ft.
.SAT...W wind 15 kt. Seas 5 ft.
.SUN THROUGH MON...S wind 25 kt. Seas 7 ft.

$$

PKZ176-250045-
Seguam Island to Adak Pacific Side-
355 AM AKDT Thu May 24 2018

...SMALL CRAFT ADVISORY THROUGH TONIGHT...

.TODAY...W wind 25 kt. Seas 13 ft.
.TONIGHT...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...W wind 15 kt. Seas 6 ft.
.SUN THROUGH MON...S wind 30 kt. Seas 11 ft.

$$

PKZ177-250045-
Adak to Kiska-
355 AM AKDT Thu May 24 2018

...SMALL CRAFT ADVISORY TODAY...

.TODAY...NW wind 20 kt. Seas 10 ft.
.TONIGHT...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...SW wind 20 kt. Seas 7 ft.
.SUN THROUGH MON...SW wind 25 kt. Seas 9 ft.

$$

PKZ178-250045-
Kiska to Attu-
355 AM AKDT Thu May 24 2018

...SMALL CRAFT ADVISORY TODAY...

.TODAY...NW wind 20 kt. Seas 8 ft.
.TONIGHT...N wind 15 kt. Seas 7 ft.
.FRI...Variable wind 10 kt. Seas 5 ft.
.FRI NIGHT...S wind 15 kt. Seas 4 ft.
.SAT THROUGH SUN...S wind 25 kt. Seas 7 ft.
.MON...SW wind 25 kt. Seas 8 ft.

$$

PKZ179-250045-
Pribilof Islands Near Shore Waters-
355 AM AKDT Thu May 24 2018

...SMALL CRAFT ADVISORY TODAY...

.TODAY...E wind 15 kt. Seas 8 ft.
.TONIGHT...NE wind 15 kt. Seas 6 ft.
.FRI...N wind 20 kt. Seas 5 ft.
.FRI NIGHT...N wind 20 kt. Seas 6 ft.
.SAT...NW wind 25 kt. Seas 6 ft.
.SUN...SW wind 15 kt. Seas 5 ft.
.MON...SE wind 25 kt. Seas 8 ft.

$$

PKZ180-250045-
Kuskokwim Delta and Etolin Strait-
355 AM AKDT Thu May 24 2018

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

$$

PKZ181-250045-
North and West of Nunivak Island-
355 AM AKDT Thu May 24 2018

.TODAY...NE wind 20 kt. Seas 6 ft.
.TONIGHT...N wind 20 kt. Seas 6 ft. Patchy fog.
.FRI...N wind 20 kt. Seas 6 ft.
.FRI NIGHT...N wind 20 kt. Seas 6 ft.
.SAT...NW wind 20 kt. Seas 5 ft.
.SUN...W wind 15 kt. Seas 3 ft.
.MON...SE wind 25 kt. Seas 6 ft.

$$

PKZ185-250045-
Saint Matthew Island Waters-
355 AM AKDT Thu May 24 2018

...SMALL CRAFT ADVISORY TODAY...

.TODAY...NE wind 20 kt. Seas 8 ft.
.TONIGHT...NE wind 20 kt. Seas 6 ft. Patchy fog.
.FRI...N wind 20 kt. Seas 6 ft.
.FRI NIGHT...NW wind 20 kt. Seas 5 ft.
.SAT...NW wind 20 kt. Seas 4 ft.
.SUN...S wind 20 kt. Seas 5 ft.
.MON...SE wind 25 kt. Seas 8 ft.

$$

758 
FZAK52 PAFC 242345
CWFALU

Coastal Waters Forecast
National Weather Service Anchorage Alaska
345 PM AKDT Thu May 24 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.

PKZ199-251230-
345 PM AKDT Thu May 24 2018
.SYNOPSIS FOR SOUTHWEST ALASKA+BRISTOL BAY+THE ALASKA
PENINSULA WATERS AND THE ALEUTIAN ISLANDS...
A 1000 mb low at 75 NM north of Nikolski moves to 140 NM 
southwest of Sitkinak at 1002 mb as high pressure builds across 
the western Bering Sea Fri. The ridge will weaken and shift to 
the central Bering Saturday.

$$

PKZ150-251230-
South of the AK Peninsula Sitkinak to Castle Cape-
345 PM AKDT Thu May 24 2018

.TONIGHT...Variable wind 15 kt. Seas 7 ft.
.FRI AND FRI NIGHT...Variable wind 10 kt, except NE 20 kt 
near the coast. Seas 6 ft.
.SAT...N wind 15 kt. Seas 4 ft.
.SAT NIGHT...NW wind 20 kt. Seas 5 ft.
.SUN...NW wind 25 kt. Seas 6 ft.
.MON...W wind 20 kt. Seas 10 ft.
.TUE...S wind 20 kt. Seas 14 ft.

$$

PKZ155-251230-
South of the AK Peninsula Castle Cape to Cape Sarichef-
345 PM AKDT Thu May 24 2018

...SMALL CRAFT ADVISORY TONIGHT AND FRIDAY NIGHT...

.TONIGHT...SW wind 15 kt. Seas 8 ft.
.FRI...N wind 15 kt. Seas 7 ft.
.FRI NIGHT...NW wind 25 kt. Seas 6 ft.
.SAT AND SAT NIGHT...NW wind 25 kt. Seas 7 ft.
.SUN...W wind 20 kt. Seas 6 ft.
.MON THROUGH TUE...S wind 25 kt. Seas 13 ft.

$$

PKZ160-251230-
Bristol Bay-
345 PM AKDT Thu May 24 2018

.TONIGHT...NE wind 15 kt. Seas 3 ft.
.FRI...NE wind 20 kt. Seas 4 ft.
.FRI NIGHT...NW wind 20 kt. Seas 4 ft.
.SAT...NW wind 20 kt. Seas 6 ft.
.SAT NIGHT...NW wind 25 kt. Seas 6 ft.
.SUN...W wind 25 kt. Seas 6 ft.
.MON...SW wind 15 kt. Seas 3 ft.
.TUE...SE wind 20 kt. Seas 4 ft.

$$

PKZ165-251230-
Port Heiden to Cape Sarichef-
345 PM AKDT Thu May 24 2018

...SMALL CRAFT ADVISORY FRIDAY NIGHT...

.TONIGHT...NE wind 15 kt. Seas 5 ft.
.FRI...N wind 20 kt. Seas 5 ft.
.FRI NIGHT...N wind 25 kt. Seas 6 ft.
.SAT AND SAT NIGHT...NW wind 25 kt. Seas 9 ft.
.SUN...W wind 20 kt. Seas 5 ft.
.MON THROUGH TUE...S wind 20 kt. Seas 5 ft.

$$

PKZ170-251230-
Cape Sarichef to Nikolski Bering Side-
345 PM AKDT Thu May 24 2018

.TONIGHT...NE wind 20 kt. Seas 6 ft.
.FRI...N wind 20 kt. Seas 5 ft.
.FRI NIGHT...N wind 20 kt. Seas 6 ft.
.SAT...NW wind 20 kt. Seas 7 ft.
.SAT NIGHT...W wind 20 kt. Seas 6 ft.
.SUN...SW wind 20 kt. Seas 5 ft.
.MON THROUGH TUE...S wind 25 kt. Seas 8 ft.

$$

PKZ171-251230-
Unalaska Bay-
345 PM AKDT Thu May 24 2018

.TONIGHT...Variable wind less than 10 kt. Seas 3 ft. Rain showers.
.FRI...NW wind 20 kt. Seas 4 ft.
.FRI NIGHT...NW wind 20 kt. Seas 5 ft.
.SAT...NW wind 20 kt. Seas 6 ft.
.SAT NIGHT...W wind 15 kt. Seas 5 ft.
.SUN...SW wind 10 kt. Seas 2 ft.
.MON THROUGH TUE...S wind 20 kt. Seas 3 ft.

$$

PKZ172-251230-
Cape Sarichef to Nikolski Pacific Side-
345 PM AKDT Thu May 24 2018

...SMALL CRAFT ADVISORY TONIGHT AND FRIDAY NIGHT...

.TONIGHT...SW wind 15 kt. Seas 10 ft.
.FRI...N wind 20 kt. Seas 7 ft.
.FRI NIGHT...N wind 25 kt. Seas 6 ft.
.SAT AND SAT NIGHT...NW wind 25 kt. Seas 7 ft.
.SUN...SW wind 20 kt. Seas 7 ft.
.MON THROUGH TUE...S wind 25 kt. Seas 14 ft.

$$

PKZ173-251230-
Nikolski to Seguam Island Bering Side-
345 PM AKDT Thu May 24 2018

...SMALL CRAFT ADVISORY THROUGH FRIDAY...

.TONIGHT...NW wind 15 kt becoming N 25 kt after midnight. 
Seas 5 ft.
.FRI...N wind 25 kt. Seas 6 ft.
.FRI NIGHT...N wind 15 kt. Seas 5 ft.
.SAT...NW wind 15 kt. Seas 5 ft.
.SAT NIGHT...SW wind 15 kt. Seas 5 ft.
.SUN THROUGH TUE...SW wind 25 kt. Seas 8 ft.

$$

PKZ174-251230-
Nikolski to Seguam Island Pacific Side-
345 PM AKDT Thu May 24 2018

...SMALL CRAFT ADVISORY THROUGH FRIDAY...

.TONIGHT...NW wind 20 kt. Seas 10 ft.
.FRI...N wind 25 kt. Seas 8 ft.
.FRI NIGHT...NW wind 20 kt. Seas 6 ft.
.SAT...NW wind 20 kt. Seas 5 ft.
.SAT NIGHT...W wind 15 kt. Seas 4 ft.
.SUN...SW wind 25 kt. Seas 9 ft.
.MON THROUGH TUE...SW wind 25 kt. Seas 13 ft.

$$

PKZ175-251230-
Seguam Island to Adak Bering Side-
345 PM AKDT Thu May 24 2018

.TONIGHT...N wind 20 kt. Seas 5 ft.
.FRI...N wind 20 kt. Seas 5 ft.
.FRI NIGHT...N wind 15 kt. Seas 5 ft. Patchy fog.
.SAT...Variable wind 10 kt. Seas 4 ft.
.SAT NIGHT...SW wind 20 kt. Seas 4 ft.
.SUN THROUGH MON...S wind 25 kt. Seas 7 ft.
.TUE...SW wind 20 kt. Seas 8 ft.

$$

PKZ176-251230-
Seguam Island to Adak Pacific Side-
345 PM AKDT Thu May 24 2018

...SMALL CRAFT ADVISORY TONIGHT...

.TONIGHT...NW wind 20 kt. Seas 9 ft.
.FRI...NW wind 20 kt. Seas 7 ft.
.FRI NIGHT...NW wind 15 kt. Seas 5 ft. Patchy fog.
.SAT...W wind 15 kt. Seas 4 ft.
.SAT NIGHT...SW wind 20 kt. Seas 5 ft.
.SUN THROUGH MON...S wind 30 kt. Seas 11 ft.
.TUE...SW wind 25 kt. Seas 12 ft.

$$

PKZ177-251230-
Adak to Kiska-
345 PM AKDT Thu May 24 2018

.TONIGHT...NW wind 15 kt. Seas 7 ft.
.FRI...NW wind 15 kt. Seas 5 ft.
.FRI NIGHT...Variable wind 10 kt. Seas 4 ft. Patchy fog.
.SAT...S wind 20 kt. Seas 5 ft.
.SAT NIGHT...S wind 25 kt. Seas 6 ft.
.SUN THROUGH TUE...SW wind 25 kt. Seas 9 ft.

$$

PKZ178-251230-
Kiska to Attu-
345 PM AKDT Thu May 24 2018

.TONIGHT...N wind 15 kt. Seas 6 ft.
.FRI...Variable wind 10 kt. Seas 6 ft.
.FRI NIGHT...S wind 15 kt. Seas 4 ft. Patchy fog.
.SAT AND SAT NIGHT...S wind 25 kt. Seas 8 ft.
.SUN THROUGH TUE...W wind 25 kt. Seas 8 ft.

$$

PKZ179-251230-
Pribilof Islands Near Shore Waters-
345 PM AKDT Thu May 24 2018

.TONIGHT...NE wind 15 kt. Seas 6 ft.
.FRI...N wind 20 kt. Seas 5 ft.
.FRI NIGHT...N wind 20 kt. Seas 6 ft.
.SAT...NW wind 20 kt. Seas 5 ft.
.SAT NIGHT...W wind 15 kt. Seas 4 ft.
.SUN...S wind 15 kt. Seas 5 ft.
.MON...SE wind 25 kt. Seas 8 ft.
.TUE...S wind 20 kt. Seas 8 ft.

$$

PKZ180-251230-
Kuskokwim Delta and Etolin Strait-
345 PM AKDT Thu May 24 2018

...SMALL CRAFT ADVISORY FRIDAY NIGHT...

.TONIGHT...N wind 15 kt. Seas 4 ft.
.FRI...N wind 20 kt. Seas 4 ft.
.FRI NIGHT...NW wind 25 kt. Seas 6 ft.
.SAT AND SAT NIGHT...NW wind 25 kt. Seas 7 ft.
.SUN...W wind 20 kt. Seas 4 ft.
.MON THROUGH TUE...SE wind 25 kt. Seas 6 ft.

$$

PKZ181-251230-
North and West of Nunivak Island-
345 PM AKDT Thu May 24 2018

...SMALL CRAFT ADVISORY TONIGHT...

.TONIGHT...N wind 25 kt. Seas 7 ft.
.FRI...N wind 20 kt. Seas 7 ft.
.FRI NIGHT...NW wind 20 kt. Seas 5 ft.
.SAT...NW wind 20 kt. Seas 4 ft.
.SAT NIGHT...NW wind 15 kt. Seas 4 ft.
.SUN...Variable wind 10 kt. Seas 3 ft.
.MON THROUGH TUE...SE wind 25 kt. Seas 6 ft.

$$

PKZ185-251230-
Saint Matthew Island Waters-
345 PM AKDT Thu May 24 2018

.TONIGHT...NE wind 20 kt. Seas 6 ft.
.FRI...N wind 20 kt. Seas 6 ft.
.FRI NIGHT...NW wind 20 kt. Seas 5 ft.
.SAT...W wind 15 kt. Seas 3 ft.
.SAT NIGHT...Variable wind 10 kt. Seas 3 ft.
.SUN...SE wind 20 kt. Seas 5 ft.
.MON THROUGH TUE...SE wind 25 kt. Seas 8 ft.

$$

Southcentral and Southwest Alaska Forecast Discussion
National Weather Service Anchorage AK
549 PM AKDT Tue May 22 2018

.ANALYSIS AND UPPER LEVELS...

A vertically stacked low continues to spin over the Gulf, bringing
showers primarily to the Gulf coast. Inland areas of Southcentral
Alaska are mostly dry, with scattered showers advecting across
the northwest Copper River Basin right ahead of a weak upper level
wave. Out west, a gale force low is tracking eastward across the
western Aleutians. Satellite imagery shows a frontal system
associated with this deep low spreading north and east across the
Bering Sea and Aleutians.

An upper level col is sitting over the Southwest Alaska coast.
As is typical with this feature, a stable air mass combined with
weak winds has resulted in a large area of stratus and fog over
the eastern bering and along portions of the southwest coast.
Lastly, a surface thermal trough extends from inland areas of
Southwest Alaska northeastward to Interior Alaska. This will act
as the focus for shower and thunderstorm development as surface
temperatures climb this afternoon.

&&

.MODEL DISCUSSION...

Models are in good agreement with the placement of the low in the
Gulf and timing on when it will dissipate. Models are also in
agreement with the center of low tracking eastward across the
Aleutians in the first 60 hours. However, there is disagreement
in the placement of a weak developing triple point low southeast
of Kodiak Thursday into Friday, though this will have little
impact on the overall forecast for the region. The primary
forecast challenge for the next couple days is location and
coverage of convection over the southern Alaska mainland as
weak upper level features move overhead.

&&

.AVIATION...

PANC...VFR conditions will persist. The diurnal Turnagain Arm wind
will continue as thermal trough strengthens over Interior Alaska
and ridge strengthens along the Gulf coast. Pressure gradients
between coast and inland look a little stronger this afternoon and
evening, so expect winds bending into the terminal will also be a
bit stronger than yesterday. This pattern will continue again,
with winds dissipating early Wednesday and returning Wednesday
afternoon.

&&

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

The persistent upper-level low remains nearly stationary over the
southern Gulf through Wednesday. At the surface, weak low
pressure centers continue over the Gulf with accompanying troughs
rotating north and west. Widespread showers will continue along
the coast through Thursday as the surface low weakens and the
upper-level low drifts to the north. An advancing long wave trough
will replace the retreating low in the Gulf as a new surface low
develops south of Kodiak Island Wednesday night. This surface low
will take a similar track as the previous, drifting northward into
the Gulf before slowly dissipating.

For interior locations, the coastal ridge will remain in place
and combined with the interior thermal trough will continue gusty
afternoon and evening winds along the Copper River, out of the
Knik Valley, and over south and west Anchorage through Thursday. A
sheared lobe of vorticity advecting southwestward across the
Copper River basin and over the Talkeetna Range will provide
enough instability to produce isolated showers during the
afternoon and evening hours Tuesday and Wednesday.

&&

.SHORT TERM FORECAST SOUTHWEST ALASKA (Days 1 and 2)...
A thermal trough extending across the Kuskokwim Valley into
Bristol Bay supports isolated to scattered showers and
thunderstorms through peak heating during the evening. Southerly
flow returns across the region overnight as the next Bering low
and front pushes to the central waters overnight. The exception to
this will be across inland areas of Bristol Bay where a weak
boundary keeps winds on the lighter side through day break
Wednesday. Patchy fog is expected to develop tonight along this
region with high surface moisture in place along with a
temperature inversion strengthening after midnight.

The Bering front approaches the southwest coast Wednesday night,
however an easterly moving wave blocks any further progression.
Precipitation chances do continue through Friday with the
combination of the slow easterly wave propagating toward the coast
as a weak surface trough remains across the southwest.

&&

.SHORT TERM FORECAST BERING SEA/ALEUTIANS (Days 1 and 2)...
Scattered to numerous showers will be ongoing as low pressure
only makes slow southeast progress through Thursday, crossing over
the eastern Aleutians to the North Pacific by Friday morning. A
ridge moves across the western half of the Bering in the Wake of
the front bringing quiet weather for the end of the week.

&&

.LONG TERM FORECAST (Days 3 through 7)...
Beginning Friday, an upper level low will continue to dominate
the weather over the southern mainland bringing continued cloudy,
showery, and somewhat cooler weather to the region, especially
along coastal areas. A shortwave trough will move north into the
Gulf on Friday bringing another round of rain to the coast though
precipitation should stay mostly on the east side of the mountain
ranges. A more well defined low pressure system will move into the
Northern Pacific/Southern Gulf region by Saturday keeping cloudy
and showery conditions over coastal areas, though due to the more
southern and eastern location of the low precipitation should be
focused more over southeast Alaska, with only isolated to
scattered showers over Southcentral. With plenty of breaks in
between cloud cover, especially for more inland locations, temps
should be able to warm up into the 60's over the weekend. By
Memorial Day, models are all showing the low over the Gulf moving
east out of the area allowing a ridge of high pressure to build in
by the afternoon. This should lead to a pretty decent day for
outdoor activities over most of the southern mainland.

Further west, a frontal system will rapidly move east across the
Aleutians and Bering Sea Sunday through Tuesday, following closely behind
the transiting ridge. Models are not in agreement regarding timing
of this system, with the GFS bringing a front across the west
coast by Monday afternoon and the EC delaying it into Tuesday.
Regardless, there is consensus that there will only be a brief
period of quasi summer-like weather for the region as we head into
next week.

&&

.AFC WATCHES/WARNINGS/ADVISORIES...
PUBLIC...None.
MARINE...Gale 176-178.

&&

SYNOPSIS AND MODEL DISCUSSION...AH/SEB
SOUTHCENTRAL ALASKA...TM/DK
SOUTHWEST ALASKA/BERING SEA/ALEUTIANS...KH
LONG TERM...KVP