Small Craft Advisory 582, NWS Anchorage, AK

704 
FZAK52 PAFC 091617 CCA
CWFALU

Coastal Waters Forecast...CORRECTED
National Weather Service Anchorage Alaska
817 AM AKDT Wed Aug 9 2017

CORRECTED ZONE 165

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.

PKZ199-100100-
817 AM AKDT Wed Aug 9 2017
.SYNOPSIS FOR SOUTHWEST ALASKA+BRISTOL BAY+THE ALASKA
PENINSULA WATERS AND THE ALEUTIAN ISLANDS...

Bogoslof volcano, 53 nm northwest of Dutch Harbor, is currently 
active. 

A 1003 mb low 90 nm south of Sand Point will shift to 60 nm north
of Cold Bay at 1000 mb tonight...then remain stationary through 
Thu night as it weakens to 1005 mb. High pressure will build over 
the western Bering through Thu night. 

$$

PKZ150-100100-
South of the AK Peninsula Sitkinak to Castle Cape-
817 AM AKDT Wed Aug 9 2017

.TODAY...SE wind increasing to 20 kt. Seas 7 ft.
.TONIGHT...S wind 20 kt. Seas 7 ft.
.THU...SE wind 20 kt. Seas 6 ft.
.THU NIGHT...SE wind 15 kt. Seas 5 ft.
.FRI THROUGH SAT...W wind 20 kt. Seas 6 ft.
.SUN...W wind 15 kt. Seas 6 ft.

$$

PKZ155-100100-
South of the AK Peninsula Castle Cape to Cape Sarichef-
817 AM AKDT Wed Aug 9 2017

.TODAY...NW wind 15 kt except S 10 kt E of the Shumagin Islands. 
Seas 6 ft. Patchy fog.
.TONIGHT...SW wind 20 kt. Seas 6 ft.
.THU...SW wind 20 kt. Seas 6 ft.
.THU NIGHT...SW wind 15 kt. Seas 6 ft.
.FRI...NW wind 20 kt. Seas 5 ft.
.SAT...SW wind 20 kt. Seas 5 ft.
.SUN...Variable wind 10 kt. Seas 11 ft.

$$

PKZ160-100100-
Bristol Bay-
817 AM AKDT Wed Aug 9 2017

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

.TODAY...E wind increasing to 20 kt. Seas 4 ft.
.TONIGHT...SE wind 25 kt. Seas 4 ft.
.THU...E wind 25 kt. Seas 4 ft.
.THU NIGHT...SE wind 20 kt. Seas 4 ft.
.FRI THROUGH SAT...W wind 20 kt. Seas 4 ft.
.SUN...NE wind 10 kt. Seas 3 ft.

$$

PKZ165-100100-
Port Heiden to Cape Sarichef-
817 AM AKDT Wed Aug 9 2017

...SMALL CRAFT ADVISORY TONIGHT...

.TODAY...N wind 15 kt . Seas 4 ft. Patchy fog. Rain.
.TONIGHT...Variable wind 15 kt except becoming S 25 kt E of Port
Moller after midnight. Seas 3 ft. Patchy fog. Rain.
.THU...S wind 20 kt except W 15 kt W of Port Moller in the afternoon.
Seas 4 ft.
.THU NIGHT...S wind 15 kt. Seas 3 ft.
.FRI THROUGH SAT...W wind 20 kt. Seas 4 ft.
.SUN...NE wind 15 kt. Seas 5 ft.

$$

PKZ170-100100-
Cape Sarichef to Nikolski Bering Side-
817 AM AKDT Wed Aug 9 2017

.TODAY...N wind 15 kt. Seas 4 ft. Patchy fog.
.TONIGHT...NW wind 15 kt. Seas 4 ft. Patchy fog.
.THU...W wind 20 kt. Seas 4 ft. Patchy fog.
.THU NIGHT...NW wind 15 kt. Seas 4 ft.
.FRI...NW wind 20 kt. Seas 4 ft.
.SAT...SE wind 20 kt. Seas 4 ft.
.SUN...NE wind 20 kt. Seas 8 ft.

$$

PKZ171-100100-
Unalaska Bay-
817 AM AKDT Wed Aug 9 2017

.TODAY...NW wind 10 kt increasing to 15 kt in the afternoon. Seas
2 ft. Patchy fog.
.TONIGHT...NW wind 15 kt. Seas 2 ft.
.THU...NW wind 20 kt. Seas 2 ft. Rain.
.THU NIGHT...NW wind 20 kt. Seas 4 ft.
.FRI...NW wind 15 kt. Seas 4 ft.
.SAT...SE wind 10 kt. Seas 2 ft.
.SUN...E wind 10 kt. Seas 3 ft.

$$

PKZ172-100100-
Cape Sarichef to Nikolski Pacific Side-
817 AM AKDT Wed Aug 9 2017

.TODAY...NW wind increasing to 20 kt. Seas building to 5 ft.
Patchy fog.
.TONIGHT...W wind 20 kt. Seas 6 ft. Patchy fog.
.THU...W wind 15 kt. Seas 6 ft. Patchy fog.
.THU NIGHT...W wind 20 kt. Seas 6 ft.
.FRI...NW wind 15 kt. Seas 5 ft.
.SAT...SE wind 15 kt. Seas 5 ft.
.SUN...SE wind 15 kt. Seas 10 ft.

$$

PKZ173-100100-
Nikloski to Seguam Island Bering Side-
817 AM AKDT Wed Aug 9 2017

.TODAY...Variable wind 10 kt. Seas 4 ft. Patchy fog.
.TONIGHT...N wind 15 kt. Seas 3 ft. Patchy fog.
.THU...NW wind 15 kt. Seas 4 ft. Patchy fog.
.THU NIGHT...NW wind 15 kt. Seas 4 ft.
.FRI...NW wind 15 kt. Seas 4 ft.
.SAT...E wind 15 kt. Seas 5 ft.
.SUN...NE wind 20 kt. Seas 9 ft.

$$

PKZ174-100100-
Nikolski to Seguam Island Pacific Side-
817 AM AKDT Wed Aug 9 2017

.TODAY...Variable wind 10 kt. Seas 5 ft. Patchy fog.
.TONIGHT...NE wind 15 kt. Seas 5 ft. Patchy fog.
.THU...N wind 15 kt. Seas 5 ft. Patchy fog.
.THU NIGHT...NW wind 15 kt. Seas 5 ft.
.FRI...N wind 15 kt. Seas 5 ft.
.SAT...SE wind 15 kt. Seas 7 ft.
.SUN...SE wind 15 kt. Seas 11 ft.

$$

PKZ175-100100-
Seguam Island to Adak Bering Side-
817 AM AKDT Wed Aug 9 2017

.TODAY...SE wind 20 kt. Seas 4 ft. Patchy fog.
.TONIGHT...NE wind 20 kt. Seas 4 ft. Patchy fog.
.THU...NE wind 15 kt. Seas 3 ft. Patchy fog.
.THU NIGHT...N wind 15 kt. Seas 4 ft.
.FRI...N wind 15 kt. Seas 4 ft.
.SAT...E wind 20 kt. Seas 6 ft.
.SUN...NE wind 25 kt. Seas 10 ft.

$$

PKZ176-100100-
Seguam Island to Adak Pacific Side-
817 AM AKDT Wed Aug 9 2017

.TODAY...SE wind 15 kt except SW 10 kt W of Atka. Seas 5 ft. 
Patchy fog.
.TONIGHT...E wind 20 kt. Seas 5 ft. Patchy fog.
.THU...NE wind 20 kt. Seas 5 ft. Patchy fog.
.THU NIGHT...N wind 15 kt. Seas 4 ft.
.FRI...NE wind 15 kt. Seas 5 ft.
.SAT...SE wind 15 kt. Seas 7 ft.
.SUN...NE wind 15 kt. Seas 9 ft.

$$

PKZ177-100100-
Adak to Kiska-
817 AM AKDT Wed Aug 9 2017

.TODAY...Variable wind 10 kt becoming NE 15 kt in the afternoon.
Seas 4 ft. Patchy fog. Rain.
.TONIGHT...NE wind 20 kt. Seas 6 ft. Patchy fog.
.THU...NE wind 20 kt. Seas 6 ft. Patchy fog.
.THU NIGHT...NE wind 20 kt. Seas 5 ft.
.FRI THROUGH SAT...NE wind 20 kt. Seas 6 ft.
.SUN...NE wind 25 kt. Seas 11 ft.

$$

PKZ178-100100-
Kiska to Attu-
817 AM AKDT Wed Aug 9 2017

.TODAY...N wind increasing to 20 kt. Seas 6 ft. Patchy fog.
.TONIGHT...NE wind 20 kt. Seas 6 ft. Patchy fog.
.THU...NE wind 20 kt. Seas 6 ft. Areas of fog.
.THU NIGHT...NE wind 20 kt. Seas 6 ft.
.FRI THROUGH SAT...NE wind 20 kt. Seas 6 ft.
.SUN...NE wind 25 kt. Seas 8 ft.

$$

PKZ179-100100-
Pribilof Islands Near Shore Waters-
817 AM AKDT Wed Aug 9 2017

.TODAY...N wind 15 kt. Seas 4 ft. Areas of fog.
.TONIGHT...N wind 20 kt. Seas 4 ft. Patchy fog. Rain.
.THU...N wind 15 kt. Seas 4 ft. Patchy fog.
.THU NIGHT...N wind 15 kt. Seas 4 ft.
.FRI...W wind 20 kt. Seas 5 ft.
.SAT THROUGH SUN...NE wind 20 kt. Seas 6 ft.

$$

PKZ180-100100-
Kuskokwim Delta and Etolin Strait-
817 AM AKDT Wed Aug 9 2017

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

.TODAY...NE wind 20 kt. Seas 4 ft. Patchy fog. Rain.
.TONIGHT...E wind 25 kt. Seas 4 ft.
.THU...E wind 25 kt. Seas 5 ft.
.THU NIGHT...E wind 15 kt. Seas 4 ft.
.FRI...W wind 25 kt. Seas 5 ft.
.SAT...N wind 25 kt. Seas 5 ft.
.SUN...N wind 20 kt. Seas 4 ft.

$$

PKZ181-100100-
North and West of Nunivak Island-
817 AM AKDT Wed Aug 9 2017

.TODAY...N wind 20 kt. Seas 4 ft. Patchy fog.
.TONIGHT...N wind 20 kt. Seas 6 ft. Patchy fog.
.THU...NE wind 20 kt in the morning becoming Variable 10 kt. Seas
5 ft. Patchy fog.
.THU NIGHT...W wind 15 kt. Seas 3 ft.
.FRI...W wind 25 kt. Seas 8 ft.
.SAT...N wind 25 kt. Seas 7 ft.
.SUN...N wind 20 kt. Seas 7 ft.

$$

PKZ185-100100-
Saint Matthew Island Waters-
817 AM AKDT Wed Aug 9 2017

.TODAY...N wind increasing to 20 kt E of Saint Matthew 
Island...Variable 10 kt W of Saint Matthew Island. Seas 4 ft. 
Areas of fog.
.TONIGHT...N wind 20 kt E of Saint Matthew Island...N 10 kt W of 
Saint Matthew Island. Seas 5 ft. Areas of fog.
.THU...N wind 20 kt except NW 10 kt W of Saint Matthew Island. Seas 
5 ft. Areas of fog.
.THU NIGHT...W wind 20 kt. Seas 4 ft.
.FRI...NW wind 25 kt. Seas 7 ft.
.SAT THROUGH SUN...NE wind 20 kt. Seas 7 ft.

$$

092 
FZAK52 PAFC 092343
CWFALU

Coastal Waters Forecast
National Weather Service Anchorage Alaska
343 PM AKDT Wed Aug 9 2017

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.

PKZ199-101245-
343 PM AKDT Wed Aug 9 2017
.SYNOPSIS FOR SOUTHWEST ALASKA+BRISTOL BAY+THE ALASKA
PENINSULA WATERS AND THE ALEUTIAN ISLANDS...

Bogoslof volcano, 53 nm northwest of Dutch Harbor, is currently 
active. 

A 1001 mb low in the vicinity of Port Heiden will move to 80 nm
north of Cold Bay early Thu morning then remain nearly stationary
through Thu evening. This low dissipates as it tracks south of the 
Alaska Peninsula on Fri. High pressure builds over the western Bering
and Aleutians through Fri. 

$$

PKZ150-101245-
South of the AK Peninsula Sitkinak to Castle Cape-
343 PM AKDT Wed Aug 9 2017

...SMALL CRAFT ADVISORY TONIGHT...

.TONIGHT...S wind 25 kt. Seas 7 ft.
.THU...S wind 20 kt. Seas 7 ft.
.THU NIGHT...S wind 15 kt. Seas 5 ft.
.FRI...Variable wind 10 kt. Seas 5 ft.
.FRI NIGHT...W wind 20 kt. Seas 5 ft.
.SAT...W wind 20 kt. Seas 6 ft.
.SUN...W wind 15 kt. Seas 6 ft.
.MON...NW wind 15 kt. Seas 11 ft.

$$

PKZ155-101245-
South of the AK Peninsula Castle Cape to Cape Sarichef-
343 PM AKDT Wed Aug 9 2017

.TONIGHT...SW wind 20 kt. From the Shumagin Islands E...Variable
wind 15 kt becoming SW after midnight. Seas 6 ft.
.THU...SW wind 20 kt. Seas 6 ft.
.THU NIGHT...SW wind 15 kt. Seas 6 ft.
.FRI AND FRI NIGHT...W wind 15 kt. Seas 5 ft.
.SAT...W wind 20 kt. Seas 5 ft.
.SUN THROUGH MON...Variable wind 10 kt. Seas 11 ft.

$$

PKZ160-101245-
Bristol Bay-
343 PM AKDT Wed Aug 9 2017

...SMALL CRAFT ADVISORY THROUGH THURSDAY...

.TONIGHT...E wind increasing to 25 kt. Seas 4 ft.
.THU...E wind 25 kt. Seas 5 ft.
.THU NIGHT...SE wind 20 kt. Seas 4 ft.
.FRI...S wind 10 kt. Seas 2 ft.
.FRI NIGHT...W wind 20 kt. Seas 4 ft.
.SAT...W wind 20 kt. Seas 6 ft.
.SUN...NE wind 10 kt. Seas 3 ft.
.MON...N wind 15 kt. Seas 2 ft.

$$

PKZ165-101245-
Port Heiden to Cape Sarichef-
343 PM AKDT Wed Aug 9 2017

.TONIGHT...W wind 15 kt. From Port Moller E...Variable wind 10 kt
becoming SE 20 kt after midnight. Seas 3 ft. Patchy fog. Rain 
showers.
.THU AND THU NIGHT...W wind 15 kt...except SE 15 kt from Port Moller
E. Seas 4 ft.
.FRI...Variable wind 10 kt. Seas 3 ft.
.FRI NIGHT...W wind 25 kt. Seas 4 ft.
.SAT...NW wind 20 kt. Seas 5 ft.
.SUN THROUGH MON...N wind 15 kt. Seas 5 ft.

$$

PKZ170-101245-
Cape Sarichef to Nikolski Bering Side-
343 PM AKDT Wed Aug 9 2017

.TONIGHT...NW wind 15 kt. Seas 4 ft. Patchy fog.
.THU...W wind 20 kt. Seas 4 ft. Patchy fog.
.THU NIGHT...NW wind 15 kt. Seas 4 ft. Patchy fog.
.FRI...NW wind 15 kt. Seas 4 ft.
.FRI NIGHT...W wind 20 kt. Seas 3 ft.
.SAT...NE wind 15 kt. Seas 4 ft.
.SUN...NE wind 20 kt. Seas 8 ft.
.MON...SE wind 20 kt. Seas 8 ft.

$$

PKZ171-101245-
Unalaska Bay-
343 PM AKDT Wed Aug 9 2017

.TONIGHT...NW wind increasing to 20 kt. Seas 2 ft. Patchy fog.
.THU...W wind 20 kt. Seas 3 ft. Patchy fog.
.THU NIGHT...NW wind 20 kt. Seas 3 ft. Rain showers.
.FRI...NW wind 15 kt. Seas 3 ft.
.FRI NIGHT...W wind 10 kt. Seas 2 ft.
.SAT THROUGH SUN...E wind 10 kt. Seas 3 ft.
.MON...SE wind 15 kt. Seas 3 ft.

$$

PKZ172-101245-
Cape Sarichef to Nikolski Pacific Side-
343 PM AKDT Wed Aug 9 2017

.TONIGHT...W wind 20 kt. Seas 6 ft. Patchy fog.
.THU...W wind 20 kt. Seas 6 ft. Patchy fog.
.THU NIGHT...W wind 20 kt. Seas 6 ft. Patchy fog.
.FRI AND FRI NIGHT...NW wind 15 kt. Seas 5 ft.
.SAT...S wind 15 kt. Seas 5 ft.
.SUN THROUGH MON...E wind 15 kt. Seas 10 ft.

$$

PKZ173-101245-
Nikloski to Seguam Island Bering Side-
343 PM AKDT Wed Aug 9 2017

.TONIGHT...Variable wind 10 kt becoming N after midnight. Seas 3 ft.
Patchy fog.
.THU...NW wind 15 kt. Seas 4 ft. Patchy fog.
.THU NIGHT...NW wind 15 kt. Seas 4 ft. Patchy fog.
.FRI...NW wind 15 kt. Seas 4 ft.
.FRI NIGHT...Variable wind 10 kt. Seas 4 ft.
.SAT...E wind 15 kt. Seas 5 ft.
.SUN...NE wind 20 kt. Seas 9 ft.
.MON...SE wind 20 kt. Seas 9 ft.

$$

PKZ174-101245-
Nikolski to Seguam Island Pacific Side-
343 PM AKDT Wed Aug 9 2017

.TONIGHT...E wind 15 kt. Seas 5 ft. Patchy fog.
.THU...N wind 15 kt. Seas 5 ft. Patchy fog.
.THU NIGHT...NW wind 15 kt. Seas 5 ft. Patchy fog.
.FRI...NW wind 15 kt. Seas 5 ft.
.FRI NIGHT...Variable wind 10 kt. Seas 5 ft.
.SAT...SE wind 15 kt. Seas 6 ft.
.SUN THROUGH MON...SE wind 15 kt. Seas 10 ft.

$$

PKZ175-101245-
Seguam Island to Adak Bering Side-
343 PM AKDT Wed Aug 9 2017

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

$$

PKZ176-101245-
Seguam Island to Adak Pacific Side-
343 PM AKDT Wed Aug 9 2017

.TONIGHT...E wind 15 kt. Seas 5 ft. Patchy fog.
.THU...NE wind 20 kt. Seas 5 ft. Patchy fog.
.THU NIGHT...N wind 15 kt. Seas 5 ft. Patchy fog.
.FRI...NE wind 15 kt. Seas 4 ft.
.FRI NIGHT...E wind 20 kt. Seas 5 ft.
.SAT...E wind 20 kt. Seas 7 ft.
.SUN...NE wind 15 kt. Seas 9 ft.
.MON...SE wind 15 kt. Seas 8 ft.

$$

PKZ177-101245-
Adak to Kiska-
343 PM AKDT Wed Aug 9 2017

.TONIGHT...NE wind 20 kt. Seas 5 ft. Areas of fog.
.THU...NE wind 20 kt. Seas 6 ft. Areas of fog.
.THU NIGHT...NE wind 20 kt. Seas 5 ft. Areas of fog.
.FRI...NE wind 15 kt. Seas 5 ft.
.FRI NIGHT...NE wind 20 kt. Seas 6 ft.
.SAT...NE wind 20 kt. Seas 7 ft.
.SUN...NE wind 25 kt. Seas 11 ft.
.MON...NE wind 20 kt. Seas 8 ft.

$$

PKZ178-101245-
Kiska to Attu-
343 PM AKDT Wed Aug 9 2017

.TONIGHT...NE wind 20 kt. Seas 6 ft. Areas of fog.
.THU...NE wind 20 kt. Seas 6 ft. Areas of fog.
.THU NIGHT...NE wind 20 kt. Seas 6 ft. Areas of fog.
.FRI AND FRI NIGHT...NE wind 20 kt. Seas 6 ft.
.SAT THROUGH SUN...NE wind 25 kt. Seas 8 ft.
.MON...SE wind 15 kt. Seas 7 ft.

$$

PKZ179-101245-
Pribilof Islands Near Shore Waters-
343 PM AKDT Wed Aug 9 2017

.TONIGHT...NW wind 20 kt. Seas 4 ft. Patchy fog.
.THU...N wind 15 kt. Seas 4 ft. Patchy fog.
.THU NIGHT...N wind 15 kt. Seas 4 ft. Patchy fog.
.FRI...W wind 15 kt. Seas 4 ft.
.FRI NIGHT...W wind 20 kt. Seas 4 ft.
.SAT THROUGH SUN...NE wind 20 kt. Seas 6 ft.
.MON...SE wind 20 kt. Seas 7 ft.

$$

PKZ180-101245-
Kuskokwim Delta and Etolin Strait-
343 PM AKDT Wed Aug 9 2017

...SMALL CRAFT ADVISORY THURSDAY...

.TONIGHT...NE wind 20 kt. Seas 4 ft. Patchy fog.
.THU...E wind 25 kt diminishing to 15 kt in the afternoon. Seas
4 ft.
.THU NIGHT...E wind 15 kt becoming NE after midnight. Seas 4 ft.
.FRI...SW wind 20 kt. Seas 3 ft.
.FRI NIGHT...W wind 25 kt. Seas 6 ft.
.SAT...NW wind 25 kt. Seas 6 ft.
.SUN THROUGH MON...N wind 20 kt. Seas 4 ft.

$$

PKZ181-101245-
North and West of Nunivak Island-
343 PM AKDT Wed Aug 9 2017

.TONIGHT...N wind 20 kt. Seas 5 ft. Patchy fog.
.THU...NE wind 20 kt in the morning becoming variable 10 kt. Seas
5 ft. Patchy fog.
.THU NIGHT...SW wind 15 kt. Seas 3 ft. Patchy fog.
.FRI...SW wind 20 kt. Seas 5 ft.
.FRI NIGHT...NW wind 30 kt. Seas 9 ft.
.SAT...N wind 25 kt. Seas 9 ft.
.SUN THROUGH MON...N wind 20 kt. Seas 7 ft.

$$

PKZ185-101245-
Saint Matthew Island Waters-
343 PM AKDT Wed Aug 9 2017

.TONIGHT...N wind 20 kt. Seas 5 ft. Areas of fog.
.THU...N wind 20 kt. Seas 5 ft. Areas of fog.
.THU NIGHT...W wind 20 kt. Seas 4 ft. Areas of fog.
.FRI...W wind 25 kt. Seas 7 ft.
.FRI NIGHT...N wind 25 kt. Seas 8 ft.
.SAT THROUGH SUN...NE wind 20 kt. Seas 7 ft.
.MON...NW wind 15 kt. Seas 6 ft.

$$

916 
FZAK52 PAFC 101205
CWFALU

Coastal Waters Forecast
National Weather Service Anchorage Alaska
405 AM AKDT Thu Aug 10 2017

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.

PKZ199-110100-
405 AM AKDT Thu Aug 10 2017
.SYNOPSIS FOR SOUTHWEST ALASKA+BRISTOL BAY+THE ALASKA
PENINSULA WATERS AND THE ALEUTIAN ISLANDS...
Bogoslof volcano, 53 nm northwest of Dutch Harbor, is currently 
active. 

A 1002 mb low 60 nm north of Cold Bay will dissipate over the 
Alaska Peninsula Fri morning. A 1002 mb low will form over eastern
Russia this afternoon and move to the Norton Sound at 998 mb by 
Fri night. An associated front will enter the northern Bering Fri 
afternoon and move to the eastern Bering by Fri night.

$$

PKZ150-110100-
South of the AK Peninsula Sitkinak to Castle Cape-
405 AM AKDT Thu Aug 10 2017

.TODAY...S wind 20 kt. Seas 6 ft.
.TONIGHT...S wind 15 kt. Seas 6 ft except subsiding to 3 ft E of
Chirikof Island after midnight.
.FRI...SE wind 15 kt in the morning becoming variable 10 kt. Seas
6 ft except 3 ft N of Chirikof Island.
.FRI NIGHT...W wind 20 kt. Seas 5 ft.
.SAT...W wind 25 kt. Seas 7 ft.
.SUN THROUGH MON...W wind 20 kt. Seas 8 ft.

$$

PKZ155-110100-
South of the AK Peninsula Castle Cape to Cape Sarichef-
405 AM AKDT Thu Aug 10 2017

.TODAY...SW wind 20 kt. Seas 6 ft.
.TONIGHT...SW wind 20 kt. Seas 6 ft.
.FRI...W wind 15 kt. Seas 6 ft.
.FRI NIGHT...W wind 20 kt. Seas 5 ft.
.SAT...W wind 25 kt. Seas 6 ft.
.SUN...E wind 15 kt. Seas 5 ft.
.MON...NW wind 20 kt. Seas 10 ft.

$$

PKZ160-110100-
Bristol Bay-
405 AM AKDT Thu Aug 10 2017

...SMALL CRAFT ADVISORY TODAY...

.TODAY...E wind 25 kt diminishing to 15 kt in the afternoon. Seas 4 
ft. Rain showers.
.TONIGHT...SE wind 20 kt. Seas 3 ft.
.FRI...SE wind 10 kt becoming SW in the afternoon. Seas 2 ft.
.FRI NIGHT...SW wind 25 kt. Seas 5 ft.
.SAT...W wind 30 kt. Seas 9 ft.
.SUN...NW wind 30 kt. Seas 8 ft.
.MON...N wind 15 kt. Seas 3 ft.

$$

PKZ165-110100-
Port Heiden to Cape Sarichef-
405 AM AKDT Thu Aug 10 2017

.TODAY...SW wind 15 kt. Seas 3 ft. Rain showers.
.TONIGHT...SW wind 15 kt. Seas 3 ft.
.FRI...Variable wind 10 kt. Seas 2 ft.
.FRI NIGHT...W wind 25 kt. Seas 5 ft.
.SAT...NW wind 25 kt. Seas 8 ft.
.SUN...N wind 25 kt. Seas 8 ft.
.MON...N wind 20 kt. Seas 6 ft.

$$

PKZ170-110100-
Cape Sarichef to Nikolski Bering Side-
405 AM AKDT Thu Aug 10 2017

.TODAY...W wind 15 kt. Seas 4 ft. Patchy fog.
.TONIGHT...W wind 15 kt. Seas 4 ft. Patchy fog.
.FRI...NW wind 15 kt. Seas 3 ft. Patchy fog.
.FRI NIGHT...W wind 20 kt. Seas 5 ft.
.SAT...N wind 20 kt. Seas 6 ft.
.SUN...NE wind 20 kt. Seas 8 ft.
.MON...N wind 20 kt. Seas 6 ft.

$$

PKZ171-110100-
Unalaska Bay-
405 AM AKDT Thu Aug 10 2017

.TODAY...W wind 20 kt. Seas 3 ft. Patchy fog.
.TONIGHT...NW wind 20 kt. Seas 2 ft. Patchy fog.
.FRI...NW wind 15 kt. Seas 3 ft. Patchy fog.
.FRI NIGHT...W wind 15 kt. Seas 2 ft.
.SAT...NW wind 15 kt. Seas 3 ft.
.SUN...NE wind 10 kt. Seas 3 ft.
.MON...N wind 15 kt. Seas 4 ft.

$$

PKZ172-110100-
Cape Sarichef to Nikolski Pacific Side-
405 AM AKDT Thu Aug 10 2017

.TODAY...W wind 15 kt. Seas 5 ft. Patchy fog.
.TONIGHT...W wind 15 kt. Seas 5 ft. Patchy fog.
.FRI...NW wind 15 kt. Seas 5 ft. Patchy fog.
.FRI NIGHT...W wind 15 kt. Seas 5 ft.
.SAT...NW wind 15 kt. Seas 6 ft.
.SUN...E wind 20 kt. Seas 8 ft.
.MON...NW wind 20 kt. Seas 10 ft.

$$

PKZ173-110100-
Nikloski to Seguam Island Bering Side-
405 AM AKDT Thu Aug 10 2017

.TODAY...N wind 15 kt. Seas 4 ft. Patchy fog.
.TONIGHT...NW wind 15 kt. Seas 4 ft. Patchy fog.
.FRI...NW wind 15 kt. Seas 3 ft. Patchy fog.
.FRI NIGHT...NW wind 15 kt. Seas 4 ft.
.SAT...N wind 25 kt. Seas 7 ft.
.SUN...NE wind 25 kt. Seas 8 ft.
.MON...N wind 20 kt. Seas 9 ft.

$$

PKZ174-110100-
Nikolski to Seguam Island Pacific Side-
405 AM AKDT Thu Aug 10 2017

.TODAY...NE wind 15 kt. Seas 5 ft. Patchy fog.
.TONIGHT...NW wind 15 kt. Seas 5 ft. Patchy fog.
.FRI...N wind 10 kt. Seas 5 ft. Patchy fog.
.FRI NIGHT...Variable wind 10 kt. Seas 5 ft.
.SAT THROUGH SUN...E wind 25 kt. Seas 8 ft.
.MON...NW wind 20 kt. Seas 11 ft.

$$

PKZ175-110100-
Seguam Island to Adak Bering Side-
405 AM AKDT Thu Aug 10 2017

.TODAY...NE wind 15 kt. Seas 3 ft. Patchy fog.
.TONIGHT...N wind 15 kt. Seas 4 ft. Patchy fog.
.FRI...N wind 10 kt. Seas 4 ft. Patchy fog.
.FRI NIGHT...Variable wind 10 kt. Seas 3 ft.
.SAT...NE wind 30 kt. Seas 8 ft.
.SUN...NE wind 30 kt. Seas 12 ft.
.MON...N wind 20 kt. Seas 10 ft.

$$

PKZ176-110100-
Seguam Island to Adak Pacific Side-
405 AM AKDT Thu Aug 10 2017

.TODAY...NE wind 20 kt. Seas 5 ft. Patchy fog.
.TONIGHT...N wind 15 kt. Seas 5 ft. Patchy fog.
.FRI...N wind 10 kt. Seas 5 ft. Patchy fog.
.FRI NIGHT...E wind 15 kt. Seas 5 ft.
.SAT THROUGH SUN...NE wind 35 kt. Seas 11 ft.
.MON...N wind 20 kt. Seas 11 ft.

$$

PKZ177-110100-
Adak to Kiska-
405 AM AKDT Thu Aug 10 2017

.TODAY...NE wind 20 kt. Seas 6 ft. Patchy fog.
.TONIGHT...NE wind 20 kt. Seas 5 ft. Patchy fog.
.FRI...NE wind 15 kt. Seas 5 ft. Areas of fog.
.FRI NIGHT...NE wind 20 kt. Seas 5 ft.
.SAT THROUGH SUN...NE wind 30 kt. Seas 12 ft.
.MON...N wind 20 kt. Seas 12 ft.

$$

PKZ178-110100-
Kiska to Attu-
405 AM AKDT Thu Aug 10 2017

.TODAY...NE wind 20 kt. Seas 6 ft. Patchy fog.
.TONIGHT...NE wind 20 kt. Seas 6 ft. Areas of fog.
.FRI...NE wind 20 kt except 10 kt Pacific side. Seas 5 ft. Areas of 
fog.
.FRI NIGHT...NE wind 20 kt. Seas 5 ft.
.SAT THROUGH SUN...NE wind 25 kt. Seas 8 ft.
.MON...NE wind 15 kt. Seas 10 ft.

$$

PKZ179-110100-
Pribilof Islands Near Shore Waters-
405 AM AKDT Thu Aug 10 2017

.TODAY...N wind increasing to 15 kt. Seas 4 ft. Patchy fog.
.TONIGHT...N wind 15 kt. Seas 4 ft. Areas of fog.
.FRI...W wind 15 kt. Seas 3 ft. Areas of fog.
.FRI NIGHT...NW wind 20 kt. Seas 6 ft.
.SAT...NW wind 20 kt. Seas 8 ft.
.SUN THROUGH MON...N wind 20 kt. Seas 7 ft.

$$

PKZ180-110100-
Kuskokwim Delta and Etolin Strait-
405 AM AKDT Thu Aug 10 2017

.TODAY...E wind 20 kt. Seas 4 ft.
.TONIGHT...E wind 10 kt. Seas 3 ft.
.FRI...Variable wind 10 kt becoming SW 20 kt in the afternoon N of
Cape Newenham. Seas 3 ft. Patchy fog.
.FRI NIGHT...W wind 25 kt. Seas 7 ft.
.SAT...W wind 35 kt. Seas 12 ft.
.SUN...N wind 35 kt. Seas 10 ft.
.MON...N wind 20 kt. Seas 5 ft.

$$

PKZ181-110100-
North and West of Nunivak Island-
405 AM AKDT Thu Aug 10 2017

...SMALL CRAFT ADVISORY FRIDAY...

.TODAY...NE wind 15 kt becoming SE 10 kt in the afternoon. Seas 4 
ft. Patchy fog.
.TONIGHT...SW wind 15 kt. Seas 3 ft. Patchy fog.
.FRI...SW wind 25 kt. Seas 4 ft. Patchy fog.
.FRI NIGHT...NW wind 35 kt. Seas 12 ft.
.SAT...NW wind 40 kt. Seas 15 ft.
.SUN...N wind 30 kt. Seas 10 ft.
.MON...N wind 20 kt. Seas 7 ft.

$$

PKZ185-110100-
Saint Matthew Island Waters-
405 AM AKDT Thu Aug 10 2017

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

.TODAY...N wind 20 kt except NW 10 kt W of Saint Matthew Island. 
Seas 5 ft. Patchy fog.
.TONIGHT...NW wind 15 kt E of Saint Matthew Island... SW 25 kt W
of Saint Matthew Island. Seas 4 ft. Areas of fog.
.FRI...W wind 25 kt becoming N in the afternoon. Seas 8 ft. Areas of
fog.
.FRI NIGHT...N wind 30 kt. Seas 11 ft.
.SAT...NW wind 30 kt. Seas 13 ft.
.SUN...N wind 30 kt. Seas 9 ft.
.MON...N wind 20 kt. Seas 6 ft.

$$

Southcentral and Southwest Alaska Forecast Discussion
National Weather Service Anchorage AK
454 PM AKDT Tue Aug 8 2017

.ANALYSIS AND UPPER LEVELS...
A high amplitude trough extends southward from a closed low just
south of the Alaska Peninsula down to around 35N latitude, with a
corresponding high amplitude ridge downstream along the west coast
of North America on up into western Canada. A strong jet southerly
jet in between the two is transporting warm and moist air northward
to Kodiak Island and across the Alaska Peninsula into Southwest
Alaska. At the moment, rainfall is fairly light through this
corridor, but a strong vorticity-maximum rounding the base of the
trough is poised to produce much heavier rain as it approaches,
especially for (southeastern facing) upslope areas of Kodiak
Island and the Alaska Peninsula. The ridging out ahead of this is
providing for dry conditions across most of Southcentral Alaska,
with warm and sunny conditions inland.

Out west, a deep closed low over the west-central Bering is dropping
southward toward the Aleutians with a narrow dissipating frontal
boundary bringing rain to the central Aleutians. Otherwise, the
very typical low clouds and fog dominates the Bering Sea and
Aleutians.

&&

.MODEL DISCUSSION...
Numerical guidance remains in solid agreement with the large scale
picture for the next couple days as the upper trough lifts northward
toward mainland Alaska. There are some differences in timing and
amplitude of the short-waves moving through the trough (or around
the upper low center). Most notably, the NAM/ECMWF solutions are
faster in moving short-wave through Southcentral Thursday due to
less consolidation of upper level energy into the short-wave. This
creates uncertainty in timing of rainfall, though the probability
that it will occur over much of Southcentral sometime Wednesday
night through Thursday is high.

&&

.SHORT TERM FORECAST SOUTHCENTRAL ALASKA (Days 1 and 2)...
An upper level ridge will continue to move north across eastern
portions of southcentral this afternoon and evening bringing
mostly sunny skies and above average temperatures for the next 12
hours. A low pressure system currently centered south of the
Alaska Peninsula will continue to move north this evening into
tomorrow bringing heavy rain and winds to Kodiak Island and the
Kenai Peninsula. Near gale force winds will impact the eastern
side of Kodiak Island, the Barren Islands, and Kamishak Bay.
Strong up-slope flow will lead to heavy rain with heaviest amounts
on the windward side of the Kodiak and Kenai mountains, with rain
accumulations totaling between 2-4" for these locations,
including the city of Kodiak, by Thursday. Downsloping will keep
locations on the leeward side of the Kenai and Chugach Mountains
initially dry on Wednesday before a few showers move through
during the afternoon and evening hours. A shortwave trough will
move into southcentral by Thursday morning bringing widespread
rain to the Northern Kenai Peninsula, Anchorage Bowl, and the Mat-
Su through the end of the day on Thursday.

&&

.SHORT TERM FORECAST SOUTHWEST ALASKA (Days 1 and 2)...
The upper levels have a vertically stacked closed low with a 1005
mb low reflected at the surface located over the Shumagin Islands.
While at 300 mb there is a 95 knot southeasterly jet streak over
the lower Alaska Peninsula. This synoptic feature is streaming
moisture from the North Pacific Ocean across the Alaska Peninsula
into the Bristol Bay region. This steady stream of moisture is
flowing from the south to north, and is spilling over into the
rest of the Southwest Alaska area. The radar imagery is reflecting
a large echo of rain over the Bristol Bay this evening before
spreading into the Lower Kuskokwim Valley, and the Kuskokwim
Delta. Therefore, look for widespread wetting rains for the
Southwest Alaska region through Thursday. The winds will become
easterly creating downslope conditions, and look for drier
conditions to occur along the Alaska/Aleutian Ranges.

&&

.SHORT TERM FORECAST BERING SEA/ALEUTIANS (Days 1 and 2)...
There is a weak 1002 mb low over the western Bering that is
tracking southward before crossing the Western Aleutians into the
North Pacific Ocean by Wednesday afternoon time-frame. While a
1007 mb Low over the Shumagin Islands will track over the Eastern
Aleutians, and will become almost stationary over the Chain
through Thursday. This feature increases the surface pressure
gradient over the Eastern Bering, and creates gusty southeasterly
to easterly winds. Meanwhile, a surface high pressure ridge build
off the Kamchatka Peninsula into the western Bering. Therefore,
look for marine layer stratus/fog to develop as the aforementioned
synoptic feature builds into the western Bering/Aleutians.

&&

.LONG TERM FORECAST (Days 3 through 7 / Friday through Tuesday)...
On Friday the upper level pattern will feature the upper low that
had been near the Alaska Peninsula beginning to slide eastward
into the Gulf. While for the most part associated precipitation
remains near the coast, instability showers inland will be
possible.

The next feature of great interest will be another
digging trough that will bring the area, particularly Southwest
Alaska, its first real taste of autumn on Saturday. Broad
northerly flow directly out of the Arctic pushes into the region,
causing widespread shower activity, particularly the further north
you go. The cold air moving in aloft may even be enough to touch
off a round of thunderstorms Saturday afternoon as the instability
increases, particularly across the Susitna Valley and Copper
River Basin.

Model continuity rapidly degrades from Sunday onward regarding how
the strong trough/upper level low over northern Alaska interacts
with a compact upper level low over the western and central
Aleutians. The spread ranges from the GFS, which depicts no
interaction, causing the low over the Aleutians to be ejected
southeastward into the north Pacific. The result is broad
northerly flow over the mainland, and very pleasant, sunny
(outside of mountain showers), seasonable weather for much of
southern mainland Alaska. The Canadian is the middle ground,
forecasting the Aleutian low to interact and move into Southern
Alaska on Monday, allowing a brief break in the rain and one day
of nice weather on Sunday. The EC is the wettest solution, showing
the low interacting with the trough over the central Aleutians on
Sunday, then moving into Southwest Alaska and cutting off into a
newly reinvigorated low that stalls out and leads to area wide
rain from Sunday evening right through Tuesday and beyond.

Thus, a small difference in the models as to how the trough over
northern Alaska interacts (or doesn't) with a small low over the
Aleutians makes all the difference in the world as to how early
next week's weather plays out. Stay tuned.

&&

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

&&

SYNOPSIS AND MODEL DISCUSSION...SEB
SOUTHCENTRAL ALASKA...KVP
SOUTHWEST ALASKA/BERING SEA/ALEUTIANS...PD
LONG TERM...JW