Gale Warning 411, NWS Anchorage, AK

757 
FZAK52 PAFC 222335
CWFALU

Coastal Waters Forecast
National Weather Service Anchorage Alaska
335 PM AKDT Wed Jul 22 2020

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-
335 PM AKDT Wed Jul 22 2020
.SYNOPSIS FOR SOUTHWEST ALASKA+BRISTOL BAY+THE ALASKA
PENINSULA WATERS AND THE ALEUTIAN ISLANDS...

A 1000 mb low 75 nm northeast of Shemya Wed afternoon moves to 180 nm 
northeast of Shemya at 998 mb by Thu afternoon and continues to 140 
nm southwest of St Paul Island at 1003 mb by Fri afternoon.

$$

PKZ150-231230-
South of the AK Peninsula Sitkinak to Castle Cape-
335 PM AKDT Wed Jul 22 2020

.TONIGHT...W wind 20 kt. Seas 5 ft.
.THU...SW wind 15 kt. Seas 4 ft.
.THU NIGHT...SW wind 20 kt. Seas 5 ft.
.FRI...W wind 20 kt. Seas 6 ft.
.FRI NIGHT...SW wind 15 kt. Seas 6 ft.
.SAT...W wind 15 kt. Seas 6 ft.
.SUN...W wind 20 kt. Seas 8 ft.
.MON...W wind 15 kt. Seas 6 ft.

$$

PKZ155-231230-
South of the AK Peninsula Castle Cape to Cape Sarichef-
335 PM AKDT Wed Jul 22 2020

...SMALL CRAFT ADVISORY THURSDAY...

.TONIGHT...S wind 15 kt. Seas 4 ft. Patchy fog.
.THU...S wind 25 kt except S 20 kt from the Shumagin Islands E.
Seas 6 ft. Patchy fog.
.THU NIGHT...SW wind 20 kt. Seas 7 ft.
.FRI...SW wind 25 kt. Seas 8 ft.
.FRI NIGHT...SW wind 20 kt. Seas 8 ft.
.SAT THROUGH SUN...W wind 20 kt. Seas 8 ft.
.MON...SW wind 15 kt. Seas 5 ft.

$$

PKZ160-231230-
Bristol Bay-
335 PM AKDT Wed Jul 22 2020

.TONIGHT...W wind 20 kt diminishing to 10 kt after midnight. Seas
4 ft. Patchy fog.
.THU...S wind 10 kt becoming SE in the afternoon. Seas 2 ft. 
Patchy fog.
.THU NIGHT...SE wind 15 kt becoming SW after midnight. Seas 3 ft.
.FRI...SW wind 15 kt. Seas 3 ft.
.FRI NIGHT...S wind 10 kt. Seas 3 ft.
.SAT...W wind 15 kt. Seas 4 ft.
.SUN...W wind 20 kt. Seas 4 ft.
.MON...SW wind 15 kt. Seas 4 ft.

$$

PKZ165-231230-
Port Heiden to Cape Sarichef-
335 PM AKDT Wed Jul 22 2020

.TONIGHT...SE wind 20 kt. From Port Moller E, variable wind 10 kt
becoming SE 20 kt after midnight. Seas 3 ft. Patchy fog.
.THU...SE wind 20 kt. Seas 5 ft. Patchy fog.
.THU NIGHT...SW wind 20 kt. Seas 5 ft.
.FRI...S wind 20 kt. Seas 5 ft.
.FRI NIGHT...S wind 15 kt. Seas 4 ft.
.SAT...NW wind 15 kt. Seas 4 ft.
.SUN THROUGH MON...SW wind 15 kt. Seas 5 ft.

$$

PKZ170-231230-
Cape Sarichef to Nikolski Bering Side-
335 PM AKDT Wed Jul 22 2020

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

.TONIGHT...SE wind 30 kt. Seas 6 ft. Patchy fog.
.THU...SW wind 25 kt. Seas 7 ft. Patchy fog.
.THU NIGHT...S wind 25 kt. Seas 7 ft.
.FRI...S wind 20 kt. Seas 6 ft.
.FRI NIGHT...W wind 15 kt. Seas 5 ft.
.SAT...W wind 15 kt. Seas 5 ft.
.SUN...SW wind 15 kt. Seas 5 ft.
.MON...Variable wind 10 kt. Seas 4 ft.

$$

PKZ171-231230-
Unalaska Bay-
335 PM AKDT Wed Jul 22 2020

.TONIGHT...S wind 20 kt. Seas 3 ft. Patchy fog.
.THU...SW wind 15 kt. Seas 2 ft. Patchy fog.
.THU NIGHT...SW wind 10 kt becoming S after midnight. Seas 2 ft.
.FRI...SW wind 15 kt. Seas 2 ft.
.FRI NIGHT...W wind 10 kt. Seas 2 ft.
.SAT THROUGH SUN...W wind 10 kt. Seas 2 ft.
.MON...Variable wind less than 10 kt. Seas 2 ft.

$$

PKZ172-231230-
Cape Sarichef to Nikolski Pacific Side-
335 PM AKDT Wed Jul 22 2020

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

.TONIGHT...S wind 25 kt. Seas 7 ft. Patchy fog.
.THU...SW wind 20 kt. Seas 8 ft. Patchy fog.
.THU NIGHT...SW wind 25 kt. Seas 10 ft.
.FRI AND FRI NIGHT...SW wind 25 kt. Seas 11 ft.
.SAT THROUGH MON...SW wind 15 kt. Seas 7 ft.

$$

PKZ173-231230-
Nikolski to Seguam Island Bering Side-
335 PM AKDT Wed Jul 22 2020

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

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

$$

PKZ174-231230-
Nikolski to Seguam Island Pacific Side-
335 PM AKDT Wed Jul 22 2020

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

.TONIGHT...S wind 30 kt. Seas 10 ft.
.THU...SW wind 25 kt. Seas 10 ft.
.THU NIGHT...SW wind 30 kt. Seas 12 ft.
.FRI...SW wind 30 kt. Seas 13 ft.
.FRI NIGHT...W wind 20 kt. Seas 12 ft.
.SAT...W wind 15 kt. Seas 8 ft.
.SUN THROUGH MON...SW wind 15 kt. Seas 6 ft.

$$

PKZ175-231230-
Seguam Island to Adak Bering Side-
335 PM AKDT Wed Jul 22 2020

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

.TONIGHT...SW wind 25 kt. Seas 7 ft.
.THU AND THU NIGHT...SW wind 25 kt turning W in the evening. 
Seas 6 ft.
.FRI AND FRI NIGHT...NW wind 20 kt. Seas 6 ft.
.SAT...Variable wind 10 kt. Seas 4 ft.
.SUN...Variable wind 10 kt. Seas 3 ft.
.MON...Variable wind 10 kt. Seas 4 ft.

$$

PKZ176-231230-
Seguam Island to Adak Pacific Side-
335 PM AKDT Wed Jul 22 2020

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

.TONIGHT...SW wind 25 kt. Seas 10 ft.
.THU...SW wind 30 kt. Seas 11 ft.
.THU NIGHT...SW wind 30 kt. Seas 12 ft.
.FRI...W wind 30 kt. Seas 13 ft.
.FRI NIGHT...W wind 20 kt. Seas 10 ft.
.SAT...NW wind 15 kt. Seas 7 ft.
.SUN...SE wind 15 kt. Seas 5 ft.
.MON...S wind 15 kt. Seas 5 ft.

$$

PKZ177-231230-
Adak to Kiska-
335 PM AKDT Wed Jul 22 2020

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

.TONIGHT...SW wind 25 kt. Seas 8 ft.
.THU...SW wind 30 kt. Seas 11 ft.
.THU NIGHT...W wind 30 kt. Seas 11 ft.
.FRI...W wind 30 kt. Seas 11 ft.
.FRI NIGHT...NW wind 20 kt. Seas 7 ft.
.SAT THROUGH SUN...SE wind 20 kt. Seas 5 ft.
.MON...S wind 15 kt. Seas 4 ft.

$$

PKZ178-231230-
Kiska to Attu-
335 PM AKDT Wed Jul 22 2020

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

.TONIGHT...W wind 25 kt. Seas 7 ft.
.THU...NW wind 30 kt. Seas 10 ft.
.THU NIGHT...NW wind 30 kt. Seas 11 ft.
.FRI...NW wind 25 kt. Seas 9 ft.
.FRI NIGHT...N wind 15 kt. Seas 6 ft.
.SAT THROUGH SUN...NE wind 20 kt. Seas 5 ft.
.MON...SE wind 15 kt. Seas 6 ft.

$$

PKZ179-231230-
Pribilof Islands Near Shore Waters-
335 PM AKDT Wed Jul 22 2020

...SMALL CRAFT ADVISORY THROUGH THURSDAY...

.TONIGHT...SE wind 25 kt. Seas 8 ft. Areas of fog. Rain.
.THU...SE wind 25 kt. Seas 7 ft. Patchy fog.
.THU NIGHT...S wind 15 kt. Seas 7 ft.
.FRI AND FRI NIGHT...Variable wind 10 kt. Seas 5 ft.
.SAT...W wind 15 kt. Seas 6 ft.
.SUN...SW wind 15 kt. Seas 5 ft.
.MON...Variable wind 10 kt. Seas 5 ft.

$$

PKZ180-231230-
Kuskokwim Delta and Etolin Strait-
335 PM AKDT Wed Jul 22 2020

...SMALL CRAFT ADVISORY THURSDAY...

.TONIGHT...SE wind 20 kt. Seas 3 ft. Patchy fog.
.THU...SE wind 25 kt. Seas 6 ft. Patchy fog.
.THU NIGHT...S wind 20 kt. Seas 5 ft. Rain showers.
.FRI...SW wind 15 kt. Seas 5 ft.
.FRI NIGHT...SW wind 10 kt. Seas 4 ft.
.SAT THROUGH MON...SW wind 15 kt. Seas 5 ft.

$$

PKZ181-231230-
North and West of Nunivak Island-
335 PM AKDT Wed Jul 22 2020

...SMALL CRAFT ADVISORY THURSDAY...

.TONIGHT...SE wind 20 kt. Seas 3 ft. Patchy fog.
.THU...E wind 25 kt. Seas 6 ft. Patchy fog.
.THU NIGHT...E wind 20 kt. Seas 6 ft.
.FRI AND FRI NIGHT...NW wind 15 kt. Seas 4 ft.
.SAT...NW wind 15 kt. Seas 4 ft.
.SUN...Variable wind 10 kt. Seas 4 ft.
.MON...SW wind 15 kt. Seas 6 ft.

$$

PKZ185-231230-
Saint Matthew Island Waters-
335 PM AKDT Wed Jul 22 2020

...GALE WARNING TONIGHT...

.TONIGHT...E wind 25 kt E of Saint Matthew Island...E 35 kt W of
Saint Matthew Island. Seas 6 ft building to 10 ft after midnight.
Patchy fog.
.THU...E wind 30 kt. Seas 10 ft. Patchy fog.
.THU NIGHT...E wind 20 kt. Seas 8 ft.
.FRI AND FRI NIGHT...N wind 15 kt. Seas 5 ft.
.SAT...W wind 15 kt. Seas 5 ft.
.SUN...Variable wind 10 kt. Seas 5 ft.
.MON...S wind 15 kt. Seas 5 ft.

$$

403 
FZAK52 PAFC 230516 AAA
CWFALU

Coastal Waters Forecast...UPDATED
National Weather Service Anchorage Alaska
916 PM AKDT Wed Jul 22 2020

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.

PKZ199-231830-
916 PM AKDT Wed Jul 22 2020
.SYNOPSIS FOR SOUTHWEST ALASKA+BRISTOL BAY+THE ALASKA
PENINSULA WATERS AND THE ALEUTIAN ISLANDS...

A 1000 mb low 75 nm northeast of Shemya Wed afternoon moves to 180 nm 
northeast of Shemya at 998 mb by Thu afternoon and continues to 140 
nm southwest of St Paul Island at 1003 mb by Fri afternoon.

$$

PKZ150-231830-
South of the AK Peninsula Sitkinak to Castle Cape-
916 PM AKDT Wed Jul 22 2020

.TONIGHT...W wind 20 kt. Seas 5 ft.
.THU...SW wind 15 kt. Seas 4 ft.
.THU NIGHT...SW wind 20 kt. Seas 5 ft.
.FRI...W wind 20 kt. Seas 6 ft.
.FRI NIGHT...SW wind 15 kt. Seas 6 ft.
.SAT THROUGH MON...W wind 15 kt. Seas 6 ft.

$$

PKZ155-231830-
South of the AK Peninsula Castle Cape to Cape Sarichef-
916 PM AKDT Wed Jul 22 2020

...SMALL CRAFT ADVISORY THURSDAY...

.TONIGHT...S wind 15 kt. Seas 4 ft. Patchy fog.
.THU...S wind 25 kt except S 20 kt from the Shumagin Islands E.
Seas
6 ft. Patchy fog. Rain.
.THU NIGHT...SW wind 20 kt. Seas 7 ft.
.FRI...SW wind 25 kt. Seas 8 ft.
.FRI NIGHT...SW wind 20 kt. Seas 8 ft.
.SAT THROUGH SUN...W wind 20 kt. Seas 7 ft.
.MON...W wind 15 kt. Seas 4 ft.

$$

PKZ160-231830-
Bristol Bay-
916 PM AKDT Wed Jul 22 2020

.TONIGHT...W wind 20 kt diminishing to 10 kt after midnight. Seas
4 ft. Patchy fog.
.THU...S wind 10 kt becoming SE in the afternoon. Seas 2 ft. Areas
of fog.
.THU NIGHT...SE wind 15 kt becoming SW after midnight. Seas 3 ft.
.FRI...SW wind 15 kt. Seas 3 ft.
.FRI NIGHT...S wind 10 kt. Seas 3 ft.
.SAT THROUGH SUN...W wind 15 kt. Seas 3 ft.
.MON...W wind 20 kt. Seas 5 ft.

$$

PKZ165-231830-
Port Heiden to Cape Sarichef-
916 PM AKDT Wed Jul 22 2020

.TONIGHT...SE wind 20 kt. From Port Moller E, variable wind 10 kt
becoming SE 20 kt after midnight. Seas 3 ft. Patchy fog.
.THU...SE wind 20 kt. Seas 5 ft. Patchy fog.
.THU NIGHT...SW wind 20 kt. Seas 5 ft.
.FRI...S wind 20 kt. Seas 5 ft.
.FRI NIGHT...S wind 15 kt. Seas 4 ft.
.SAT...NW wind 15 kt. Seas 3 ft.
.SUN...W wind 20 kt. Seas 5 ft.
.MON...SW wind 15 kt. Seas 5 ft.

$$

PKZ170-231830-
Cape Sarichef to Nikolski Bering Side-
916 PM AKDT Wed Jul 22 2020

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

.TONIGHT...SE wind 30 kt. Seas 6 ft. Patchy fog.
.THU...SW wind 25 kt. Seas 7 ft. Chance of thunderstorms in the
morning. Patchy fog.
.THU NIGHT...S wind 25 kt. Seas 7 ft. Rain.
.FRI...S wind 20 kt. Seas 6 ft.
.FRI NIGHT...W wind 15 kt. Seas 5 ft.
.SAT...NW wind 15 kt. Seas 4 ft.
.SUN...SW wind 20 kt. Seas 5 ft.
.MON...SW wind 15 kt. Seas 4 ft.

$$

PKZ171-231830-
Unalaska Bay-
916 PM AKDT Wed Jul 22 2020

.TONIGHT...S wind 20 kt. Seas 3 ft. Patchy fog. Rain.
.THU...SW wind 15 kt. Seas 2 ft. Patchy fog.
.THU NIGHT...SW wind 10 kt becoming S after midnight. Seas 2 ft.
Rain.
.FRI...SW wind 15 kt. Seas 2 ft.
.FRI NIGHT...W wind 10 kt. Seas 2 ft.
.SAT THROUGH SUN...W wind 15 kt. Seas 2 ft.
.MON...S wind 10 kt. Seas 2 ft.

$$

PKZ172-231830-
Cape Sarichef to Nikolski Pacific Side-
916 PM AKDT Wed Jul 22 2020

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

.TONIGHT...S wind 25 kt. Seas 7 ft. Patchy fog. Rain.
.THU...SW wind 20 kt. Seas 8 ft. Patchy fog.
.THU NIGHT...SW wind 25 kt. Seas 10 ft.
.FRI AND FRI NIGHT...SW wind 25 kt. Seas 11 ft.
.SAT THROUGH SUN...W wind 20 kt. Seas 8 ft.
.MON...SW wind 15 kt. Seas 5 ft.

$$

PKZ173-231830-
Nikolski to Seguam Island Bering Side-
916 PM AKDT Wed Jul 22 2020

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

.TONIGHT...SE wind 25 kt. Seas 8 ft. Rain.
.THU...SW wind 25 kt. Seas 7 ft.
.THU NIGHT...S wind 25 kt. Seas 8 ft. Rain.
.FRI...SW wind 25 kt. Seas 8 ft.
.FRI NIGHT...NW wind 20 kt. Seas 7 ft.
.SAT...NW wind 15 kt. Seas 4 ft.
.SUN...SW wind 15 kt. Seas 4 ft.
.MON...Variable wind 10 kt. Seas 4 ft.

$$

PKZ174-231830-
Nikolski to Seguam Island Pacific Side-
916 PM AKDT Wed Jul 22 2020

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

.TONIGHT...S wind 30 kt. Seas 10 ft. Rain.
.THU...SW wind 25 kt. Seas 10 ft.
.THU NIGHT...SW wind 30 kt. Seas 12 ft. Rain.
.FRI...SW wind 30 kt. Seas 13 ft.
.FRI NIGHT...W wind 20 kt. Seas 12 ft.
.SAT...W wind 15 kt. Seas 8 ft.
.SUN...Variable wind 10 kt. Seas 5 ft.
.MON...S wind 15 kt. Seas 7 ft.

$$

PKZ175-231830-
Seguam Island to Adak Bering Side-
916 PM AKDT Wed Jul 22 2020

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

.TONIGHT...SW wind 25 kt. Seas 7 ft.
.THU...SW wind 25 kt. Seas 6 ft.
.THU NIGHT...SW wind 25 kt. Seas 6 ft. Rain.
.FRI AND FRI NIGHT...NW wind 20 kt. Seas 6 ft.
.SAT...Variable wind 10 kt. Seas 4 ft.
.SUN THROUGH MON...Variable wind 10 kt. Seas 3 ft.

$$

PKZ176-231830-
Seguam Island to Adak Pacific Side-
916 PM AKDT Wed Jul 22 2020

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

.TONIGHT...SW wind 25 kt. Seas 10 ft.
.THU...SW wind 30 kt. Seas 11 ft.
.THU NIGHT...SW wind 30 kt. Seas 12 ft.
.FRI...W wind 30 kt. Seas 13 ft.
.FRI NIGHT...W wind 20 kt. Seas 10 ft.
.SAT THROUGH MON...S wind 15 kt. Seas 7 ft.

$$

PKZ177-231830-
Adak to Kiska-
916 PM AKDT Wed Jul 22 2020

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

.TONIGHT...SW wind 25 kt. Seas 8 ft.
.THU...SW wind 30 kt. Seas 11 ft.
.THU NIGHT...W wind 30 kt. Seas 11 ft.
.FRI...W wind 30 kt. Seas 11 ft.
.FRI NIGHT...NW wind 20 kt. Seas 7 ft.
.SAT...E wind 20 kt. Seas 4 ft.
.SUN THROUGH MON...S wind 15 kt. Seas 7 ft.

$$

PKZ178-231830-
Kiska to Attu-
916 PM AKDT Wed Jul 22 2020

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

.TONIGHT...W wind 25 kt. Seas 7 ft.
.THU...NW wind 30 kt. Seas 10 ft.
.THU NIGHT...NW wind 30 kt. Seas 11 ft.
.FRI...NW wind 25 kt. Seas 9 ft.
.FRI NIGHT...N wind 15 kt. Seas 6 ft.
.SAT...E wind 20 kt. Seas 5 ft.
.SUN THROUGH MON...SE wind 15 kt. Seas 6 ft.

$$

PKZ179-231830-
Pribilof Islands Near Shore Waters-
916 PM AKDT Wed Jul 22 2020

...SMALL CRAFT ADVISORY THROUGH THURSDAY...

.TONIGHT...SE wind 25 kt. Seas 8 ft. Areas of fog. Rain.
.THU...SE wind 25 kt. Seas 7 ft. Patchy fog. Rain showers. Chance of
thunderstorms in the morning. 
.THU NIGHT...S wind 15 kt. Seas 7 ft.
.FRI...Variable wind 10 kt. Seas 5 ft.
.FRI NIGHT...Variable wind 10 kt. Seas 5 ft.
.SAT...NW wind 15 kt. Seas 4 ft.
.SUN THROUGH MON...SW wind 15 kt. Seas 5 ft.

$$

PKZ180-231830-
Kuskokwim Delta and Etolin Strait-
916 PM AKDT Wed Jul 22 2020

...SMALL CRAFT ADVISORY THURSDAY...

.TONIGHT...SE wind 20 kt. Seas 3 ft. Patchy fog.
.THU...SE wind 25 kt. Seas 6 ft. Patchy fog.
.THU NIGHT...S wind 20 kt. Seas 5 ft.
.FRI...SW wind 15 kt. Seas 5 ft.
.FRI NIGHT...SW wind 10 kt. Seas 4 ft.
.SAT THROUGH SUN...W wind 15 kt. Seas 4 ft.
.MON...SW wind 20 kt. Seas 6 ft.

$$

PKZ181-231830-
North and West of Nunivak Island-
916 PM AKDT Wed Jul 22 2020

...SMALL CRAFT ADVISORY THURSDAY...

.TONIGHT...SE wind 20 kt. Seas 3 ft. Patchy fog. Rain.
.THU...E wind 25 kt. Seas 6 ft. Patchy fog.
.THU NIGHT...E wind 20 kt. Seas 6 ft.
.FRI AND FRI NIGHT...NW wind 15 kt. Seas 4 ft.
.SAT...NW wind 15 kt. Seas 4 ft.
.SUN...W wind 15 kt. Seas 7 ft.
.MON...SW wind 20 kt. Seas 7 ft.

$$

PKZ185-231830-
Saint Matthew Island Waters-
916 PM AKDT Wed Jul 22 2020

...GALE WARNING TONIGHT...

.TONIGHT...E wind 25 kt E of Saint Matthew Island...E 35 kt W of
Saint Matthew Island. Seas 6 ft building to 10 ft after midnight.
Patchy fog. Rain.
.THU...E wind 30 kt. Seas 10 ft. Patchy fog. Rain.
.THU NIGHT...E wind 20 kt. Seas 8 ft.
.FRI AND FRI NIGHT...N wind 15 kt. Seas 5 ft.
.SAT...W wind 15 kt. Seas 4 ft.
.SUN THROUGH MON...SW wind 20 kt. Seas 7 ft.

$$

683 
FZAK52 PAFC 231136
CWFALU

Coastal Waters Forecast
National Weather Service Anchorage Alaska
336 AM AKDT Thu Jul 23 2020

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.

PKZ199-240045-
336 AM AKDT Thu Jul 23 2020
.SYNOPSIS FOR SOUTHWEST ALASKA+BRISTOL BAY+THE ALASKA
PENINSULA WATERS AND THE ALEUTIAN ISLANDS...

A 996 mb low 250 nm northwest of Shemya moves to 160 nm west of
Saint Paul at 1003 mb Fri morning and then moves to 15 nm north of
Cold Bay at 1005 mb Sat morning.

$$

PKZ150-240045-
South of the AK Peninsula Sitkinak to Castle Cape-
336 AM AKDT Thu Jul 23 2020

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

.TODAY...SW wind 20 kt. Seas 5 ft. Rain.
.TONIGHT...SW wind 25 kt. Seas 6 ft.
.FRI...W wind 25 kt. Seas 7 ft.
.FRI NIGHT...SW wind 20 kt. Seas 7 ft.
.SAT THROUGH MON...W wind 15 kt. Seas 6 ft.

$$

PKZ155-240045-
South of the AK Peninsula Castle Cape to Cape Sarichef-
336 AM AKDT Thu Jul 23 2020

...SMALL CRAFT ADVISORY THROUGH FRIDAY...

.TODAY...SW wind 25 kt. Seas 7 ft. Patchy fog. Rain.
.TONIGHT...SW wind 25 kt. Seas 8 ft.
.FRI...SW wind 25 kt. Seas 9 ft.
.FRI NIGHT...SW wind 25 kt. Seas 9 ft.
.SAT THROUGH SUN...W wind 20 kt. Seas 7 ft.
.MON...W wind 15 kt. Seas 4 ft.

$$

PKZ160-240045-
Bristol Bay-
336 AM AKDT Thu Jul 23 2020

.TODAY...SE wind 20 kt. Seas 3 ft. Areas of fog.
.TONIGHT...SE wind 20 kt in the morning becoming SW wind after
midnight. Seas 4 ft.
.FRI...W wind 20 kt. Seas 5 ft.
.FRI NIGHT...W wind 15 kt. Seas 3 ft.
.SAT THROUGH SUN...W wind 15 kt. Seas 3 ft.
.MON...W wind 20 kt. Seas 5 ft.

$$

PKZ165-240045-
Port Heiden to Cape Sarichef-
336 AM AKDT Thu Jul 23 2020

...SMALL CRAFT ADVISORY TODAY...

.TODAY...SE wind 25 kt becoming SW wind in the afternoon. Seas 5 ft.
Patchy fog.
.TONIGHT...SW wind 20 kt. Seas 6 ft.
.FRI...S wind 15 kt. Seas 5 ft.
.FRI NIGHT...SW wind 15 kt. Seas 4 ft.
.SAT...NW wind 15 kt. Seas 4 ft.
.SUN...W wind 20 kt. Seas 5 ft.
.MON...SW wind 15 kt. Seas 5 ft.

$$

PKZ170-240045-
Cape Sarichef to Nikolski Bering Side-
336 AM AKDT Thu Jul 23 2020

...SMALL CRAFT ADVISORY THROUGH TONIGHT...

.TODAY...SW wind 25 kt. Seas 7 ft. Chance of thunderstorms in the
morning. Patchy fog.
.TONIGHT...SW wind 25 kt. Seas 7 ft. Rain.
.FRI...SW wind 20 kt. Seas 6 ft. Rain.
.FRI NIGHT...W wind 15 kt. Seas 5 ft.
.SAT...NW wind 15 kt. Seas 5 ft.
.SUN...SW wind 20 kt. Seas 5 ft.
.MON...SW wind 15 kt. Seas 4 ft.

$$

PKZ171-240045-
Unalaska Bay-
336 AM AKDT Thu Jul 23 2020

...SMALL CRAFT ADVISORY TODAY...

.TODAY...SW wind 25 kt. Seas 3 ft. Patchy fog.
.TONIGHT...SW wind 15 kt. Seas 2 ft. Rain.
.FRI...S wind 15 kt becoming variable wind 10 kt in the afternoon. 
Seas 3 ft. Rain.
.FRI NIGHT...NW wind 15 kt. Seas 3 ft.
.SAT...W wind 20 kt. Seas 3 ft.
.SUN...W wind 15 kt. Seas 2 ft.
.MON...S wind 10 kt. Seas 2 ft.

$$

PKZ172-240045-
Cape Sarichef to Nikolski Pacific Side-
336 AM AKDT Thu Jul 23 2020

...SMALL CRAFT ADVISORY THROUGH FRIDAY...

.TODAY...SW wind 25 kt. Seas 9 ft. Patchy fog.
.TONIGHT...SW wind 25 kt. Seas 10 ft.
.FRI...SW wind 30 kt. Seas 11 ft. Rain.
.FRI NIGHT...W wind 25 kt. Seas 10 ft.
.SAT...NW wind 20 kt. Seas 8 ft.
.SUN...W wind 20 kt. Seas 5 ft.
.MON...SW wind 15 kt. Seas 5 ft.

$$

PKZ173-240045-
Nikolski to Seguam Island Bering Side-
336 AM AKDT Thu Jul 23 2020

...SMALL CRAFT ADVISORY THROUGH FRIDAY...

.TODAY...SW wind 30 kt. Seas 8 ft.
.TONIGHT...SW wind 25 kt. Seas 8 ft. Rain.
.FRI...SW wind 25 kt becoming NW wind 20 kt in the afternoon. Seas 8
ft.
.FRI NIGHT...NW wind 20 kt. Seas 6 ft.
.SAT...W wind 15 kt. Seas 5 ft.
.SUN...SW wind 15 kt. Seas 4 ft.
.MON...Variable wind 10 kt. Seas 4 ft.

$$

PKZ174-240045-
Nikolski to Seguam Island Pacific Side-
336 AM AKDT Thu Jul 23 2020

...SMALL CRAFT ADVISORY THROUGH FRIDAY...

.TODAY...SW wind 30 kt. Seas 11 ft.
.TONIGHT...SW wind 30 kt. Seas 13 ft. Rain.
.FRI...SW wind 30 kt. Seas 13 ft. Rain.
.FRI NIGHT...W wind 25 kt. Seas 11 ft.
.SAT...W wind 20 kt. Seas 8 ft.
.SUN...Variable wind 10 kt. Seas 5 ft.
.MON...S wind 15 kt. Seas 7 ft.

$$

PKZ175-240045-
Seguam Island to Adak Bering Side-
336 AM AKDT Thu Jul 23 2020

...SMALL CRAFT ADVISORY THROUGH FRIDAY...

.TODAY...SW wind 25 kt. Seas 6 ft. Rain showers.
.TONIGHT...SW wind 25 kt. Seas 7 ft. Rain.
.FRI...W wind 25 kt. Seas 6 ft.
.FRI NIGHT...NW wind 20 kt. Seas 5 ft.
.SAT...Variable wind 10 kt. Seas 4 ft.
.SUN THROUGH MON...Variable wind 10 kt. Seas 3 ft.

$$

PKZ176-240045-
Seguam Island to Adak Pacific Side-
336 AM AKDT Thu Jul 23 2020

...SMALL CRAFT ADVISORY THROUGH FRIDAY...

.TODAY...SW wind 30 kt. Seas 12 ft.
.TONIGHT...SW wind 30 kt. Seas 13 ft. Rain.
.FRI...W wind 30 kt. Seas 13 ft. Rain.
.FRI NIGHT...NW wind 20 kt. Seas 10 ft.
.SAT...S wind 20 kt. Seas 6 ft.
.SUN...SE wind 20 kt. Seas 6 ft.
.MON...S wind 15 kt. Seas 7 ft.

$$

PKZ177-240045-
Adak to Kiska-
336 AM AKDT Thu Jul 23 2020

...SMALL CRAFT ADVISORY THROUGH FRIDAY...

.TODAY...SW wind 30 kt. Seas 11 ft.
.TONIGHT...W wind 30 kt. Seas 12 ft.
.FRI...W wind 30 kt. Seas 11 ft.
.FRI NIGHT...NW wind 20 kt. Seas 7 ft.
.SAT THROUGH SUN...SE wind 20 kt. Seas 7 ft.
.MON...S wind 15 kt. Seas 7 ft.

$$

PKZ178-240045-
Kiska to Attu-
336 AM AKDT Thu Jul 23 2020

...SMALL CRAFT ADVISORY THROUGH FRIDAY...

.TODAY...NW wind 30 kt. Seas 10 ft.
.TONIGHT...W wind 30 kt. Seas 11 ft.
.FRI...NW wind 25 kt diminishing to 15 kt in the afternoon. Seas 10 
ft.
.FRI NIGHT...W wind 15 kt. Seas 6 ft.
.SAT...E wind 25 kt. Seas 7 ft.
.SUN...E wind 20 kt. Seas 7 ft.
.MON...SE wind 15 kt. Seas 6 ft.

$$

PKZ179-240045-
Pribilof Islands Near Shore Waters-
336 AM AKDT Thu Jul 23 2020

...SMALL CRAFT ADVISORY TODAY...

.TODAY...SE wind 25 kt becoming SW wind in the afternoon. Seas 8 ft.
Patchy fog. Rain showers. Chance of thunderstorms in the morning. 
.TONIGHT...S wind 20 kt. Seas 6 ft.
.FRI...Variable wind 10 kt. Seas 5 ft.
.FRI NIGHT...N wind 15 kt. Seas 5 ft.
.SAT...NW wind 15 kt. Seas 4 ft.
.SUN THROUGH MON...SW wind 15 kt. Seas 5 ft.

$$

PKZ180-240045-
Kuskokwim Delta and Etolin Strait-
336 AM AKDT Thu Jul 23 2020

...SMALL CRAFT ADVISORY TODAY...

.TODAY...SE wind 25 kt. Seas 6 ft. Patchy fog. Rain.
.TONIGHT...SE wind 20 kt becoming SW wind in the afternoon. Seas 6 
ft.
.FRI...SW wind 15 kt. Seas 5 ft.
.FRI NIGHT...W wind 15 kt. Seas 3 ft.
.SAT THROUGH SUN...W wind 15 kt. Seas 4 ft.
.MON...SW wind 20 kt. Seas 6 ft.

$$

PKZ181-240045-
North and West of Nunivak Island-
336 AM AKDT Thu Jul 23 2020

...SMALL CRAFT ADVISORY TODAY...

.TODAY...E wind 25 kt. Seas 7 ft. Patchy fog.
.TONIGHT...E wind 20 kt. Seas 6 ft.
.FRI...SW wind 15 kt. Seas 5 ft.
.FRI NIGHT...NW wind 15 kt. Seas 4 ft.
.SAT...NW wind 15 kt. Seas 4 ft.
.SUN...W wind 15 kt. Seas 7 ft.
.MON...SW wind 20 kt. Seas 7 ft.

$$

PKZ185-240045-
Saint Matthew Island Waters-
336 AM AKDT Thu Jul 23 2020

...SMALL CRAFT ADVISORY THROUGH TONIGHT...

.TODAY...E wind 30 kt. Seas 10 ft. Patchy fog. Rain.
.TONIGHT...NE wind 25 kt. Seas 8 ft.
.FRI...N wind 20 kt. Seas 6 ft.
.FRI NIGHT...NW wind 15 kt. Seas 4 ft.
.SAT...W wind 15 kt. Seas 4 ft.
.SUN THROUGH MON...SW wind 20 kt. Seas 7 ft.

$$

Southcentral and Southwest Alaska Forecast Discussion
National Weather Service Anchorage AK
526 PM AKDT Tue Jul 21 2020

.ANALYSIS AND UPPER LEVELS...

The southern mainland lies in between systems this afternoon, as
the low that brought rainfall to Southcentral overnight continues
to head eastward across the Gulf towards the Panhandle, and our
next system seen in water vapor imagery heading towards the
southern portions of the state from the northern Bering (currently
the low is just north to northeast of Saint Matthew Island). This
latter feature is helping provide enough ascent (lift) for
showers to develop and move eastward, as seen in the Bethel
Doppler radar imagery loop.

In between these systems, several weak disturbances aloft are
seen in satellite imagery, with small scale associated lows
progressing eastward. Two good examples are a low just south of
Cape Newenham that was observed at 11 am, with a well-defined
cloud band extending southward (frontal-like feature), and a
similar low and associated meso-front south of Nunivak Island.
Both of these systems were completely missed by the numerical
suite. However, they are of little fan fare, aside from a possible
wind shift as they move ashore and some more robust but brief
breaks in the cloud cover as they pass by (likely due to
meso/smaller scale subsidence.

Finally, a low situated near Attu continues to provide sufficient
lift for showery type precipitation to affect the western
portions of the Aleutian chain and Bering Sea. These showers are
getting additional moisture of tropical origin (MIMIC water vapor
imagery shows origins from the northern Micronesia region),
allowing for cooling cloud tops and likely heavier bursts of
precipitation. This is over an unpopulated area though, with it
just affecting maritime interests.

&&

.MODEL DISCUSSION...

The models remain in excellent agreement with their perspective
forecasts at the surface and aloft, with tight clustering seen at
both levels, similar to yesterday. This leads to a higher than
average confidence in the forecast details over the next few days.

&&

.AVIATION...

PANC...VFR conditions and light winds will persist through the
period. Rainfall potential will increase after 22/12z, with at
least brief periods of close to MVFR conditions developing. For
now, opted for a scattered deck at 3000 feet and will await later
numerical guidance.

&&

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

Southcentral is in the middle of two systems today as a low
departs toward the Panhandle and an upper level trough currently
over Southwest Alaska approaches. This transition has increased
the pressure gradient over the Barren Islands and northern Kodiak
Island where gusty northwesterly winds are expected to continue
through Wednesday evening. Isolated thunderstorms are possible
this afternoon and evening over the Copper River Basin and the
western Kenai Peninsula as cloud cover dissipates and daytime
heating aids convection. Cloud cover will increase through the
evening hours into Wednesday morning as the leading edge of the
inbound system arrives from the northwest this evening. Models
have agreed that this low will track rather quickly from the
northwest to the southeast Wednesday morning through Wednesday
evening. The greatest challenge has been the timing of
precipitation as model guidance has not been consistent. Current
thinking is that light rain will begin Wednesday morning over the
foothills of the Alaska Range, Cook Inlet, and the western Kenai
Peninsula. Precipitation will then fill in across much of
Southcentral by midday with the greatest amounts of rain expected
over the Kenai Peninsula and along the northern Gulf coast. Rain
will then taper from west to east beginning late Wednesday
afternoon. Areas across the northern Gulf coast and southern
Copper River Basin should expect rain tapering off by Wednesday
evening. As this low departs late Wednesday, cloud cover may clear
just enough to allow for afternoon and evening thunderstorms over
the Susitna Valley and northern Copper River Basin Wednesday
afternoon and evening. As this low quickly moves toward the
southeast, a beautiful day is in store for Southcentral on
Thursday with clear skies and warm temperatures.

&&

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

The upper level low that moved into the Kuskokwim Delta earlier
today will continue to spread eastward over the Southwest mainland
through the overnight hours. Showers associated with this upper
level feature will begin to taper off Wednesday morning, allowing
for a break in the active weather pattern as this system moves
out of the region for the afternoon and evening hours.

On Thursday, a front associated with a Bering low will approach
the Southwest coast, stretching across the Alaska Peninsula. This
will bring the next chance of widespread rainfall for the coastal
areas on Thursday, which will then move farther inland through
the end of the week.

&&

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

A low centered just west of Shemya continues to be the driver over
the western Aleutians and Bering as the associated front pushes
eastward. Small craft advisory winds and widespread rain remain in
the forecast through the next few days as the front moves over the
Pribilofs by Wednesday afternoon and then pushes into the
Southwest coast by Thursday. However, expect the strong, small
craft winds to continue on the backside of this low system over
the western Bering on Thursday as a tight gradients remains in
place.

&&

.MARINE (Days 3 through 5)...

...Bering Sea and the Aleutian Coastal Waters...

An area of low pressure will meander across the central Bering.
Sustained small craft criteria winds (23 knots or more) will
develop south of the Aleutian Chain from the Rat Islands eastward
to south of Nikolski for Friday into Saturday morning. Here,
waves will build to near 10 feet given good fetch length. These
winds and waves will weaken for the remainder of the weekend as
the low itself fills/weakens some.

...Gulf of Alaska...

A front will swing eastward across the Gulf on Friday, ahead of a
deepening area of low pressure that reaches the western Gulf
Friday night, and then moves slowly northeast to near the
coastline by Sunday. It's possible some sustained small craft
strength winds will develop across the northern Gulf on Saturday
ahead of the low. Otherwise, winds and waves will remain below
headline criteria.

&&

.LONG TERM FORECAST (Days 3 through 7: Friday through Tuesday)...

A cooler than normal and unsettled pattern is expected for Friday
through Tuesday as broad upper level troughing extends across
Southcentral and Southwest Alaska. This troughing will be driven
by global weather patterns, reaching as far away as the Indian
Ocean. This is significant as upper level troughing over Alaska
is enhanced by upper level ridging over the Indian subcontinent.
Furthermore, ECMWF/GFS/GEM ensembles are showing easterly 200mb
zonal winds in the polar-jet region. This dynamic will help weaken
the polar-jet and increase the likelihood in a meridional pattern
setting up across Alaska.

Ensembles show positive precipitation anomalies along the coast
for Southcentral Alaska for this period, meaning there will be
more rainfall than normal during the period. Deterministic models
are showing a broad low pressure system over the Bering/Aleutians
on Friday. This low is projected to move east-northeastward
across the Gulf of Alaska. There is a moderate degree of
uncertainty in the exact track of this low as the GFS and GEM
bring this low northeastward into Yukon Territory while the ECMWF
keeps the low stalled off the coast of Southeast Alaska. Due to
this, there is low to moderate confidence in the precipitation
forecast as precipitation amounts are highly dependent on the low
track.

In summary, days 3-7 is expected to have cool temperatures and
above average precipitation. However, there is a high degree of
uncertainty in projected rainfall amounts in Southcentral Alaska.

&&

.AFC WATCHES/WARNINGS/ADVISORIES...
PUBLIC...NONE.
MARINE...GALES: 130, 131
FIRE WEATHER...NONE.

&&

SYNOPSIS AND MODEL DISCUSSION...PD
SOUTHCENTRAL ALASKA...KO
SOUTHWEST ALASKA/BERING SEA/ALEUTIANS...AH
MARINE/LONG TERM...PD/ED