Gale Warning 452, NWS Anchorage, AK

473 
FZAK52 PAFC 172356
CWFALU

Coastal Waters Forecast
National Weather Service Anchorage Alaska
356 PM AKDT Tue Sep 17 2019

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.

PKZ199-181300-
356 PM AKDT Tue Sep 17 2019
.SYNOPSIS FOR SOUTHWEST ALASKA+BRISTOL BAY+THE ALASKA
PENINSULA WATERS AND THE ALEUTIAN ISLANDS...

A 987 mb low 125 nm southwest of Saint Paul Island moves over the 
Alaska Peninsula Wed morning. A 981 mb North Pacific low tracks south
of the Aleutians through Thu afternoon, but its front moves over the
western Aleutians early Wed and the central Aleutians Wed night 
before weakening early Thu.

$$

PKZ150-181300-
South of the AK Peninsula Sitkinak to Castle Cape-
356 PM AKDT Tue Sep 17 2019

...GALE WARNING WEDNESDAY...

.TONIGHT...SW wind 30 kt. Seas building to 12 ft. Rain.
.WED...SW wind 35 kt. Seas 16 ft.
.WED NIGHT...SW wind 30 kt diminishing to 20 kt after midnight. Seas
16 ft subsiding to 12 ft after midnight.
.THU...S wind 15 kt. Seas 10 ft.
.THU NIGHT...N wind 20 kt. Seas 7 ft.
.FRI THROUGH SAT...W wind 25 kt. Seas 9 ft.
.SUN...SW wind 20 kt. Seas 10 ft.

$$

PKZ155-181300-
South of the AK Peninsula Castle Cape to Cape Sarichef-
356 PM AKDT Tue Sep 17 2019

...GALE WARNING THROUGH WEDNESDAY...

.TONIGHT...SW wind increasing to 35 kt. Seas 10 ft in the evening
building to 17 ft.
.WED...SW wind 35 kt. Seas 18 ft.
.WED NIGHT...W wind 30 kt becoming SW 20 kt after midnight. Seas
15 ft subsiding to 10 ft after midnight.
.THU...E wind 15 kt. Seas 7 ft.
.THU NIGHT...N wind 20 kt. Seas 6 ft.
.FRI...NW wind 25 kt. Seas 9 ft.
.SAT...SW wind 25 kt. Seas 8 ft.
.SUN...W wind 25 kt. Seas 13 ft.

$$

PKZ160-181300-
Bristol Bay-
356 PM AKDT Tue Sep 17 2019

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

.TONIGHT...SW wind 25 kt. Seas building to 7 ft. Widespread rain 
showers.
.WED...SW wind 25 kt. Seas 8 ft. Rain showers.
.WED NIGHT...W wind 25 kt. Seas 8 ft.
.THU...SW wind 20 kt. Seas 6 ft.
.THU NIGHT...NW wind 10 kt. Seas 4 ft.
.FRI...NW wind 25 kt. Seas 5 ft.
.SAT...NW wind 20 kt. Seas 4 ft.
.SUN...N wind 15 kt. Seas 4 ft.

$$

PKZ165-181300-
Port Heiden to Cape Sarichef-
356 PM AKDT Tue Sep 17 2019

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

.TONIGHT...S wind 30 kt. Seas building to 10 ft. Rain showers.
.WED...SW wind 30 kt. Seas 11 ft.
.WED NIGHT...SW wind 25 kt. Seas 10 ft.
.THU...SW wind 20 kt. Seas 7 ft.
.THU NIGHT...NW wind 15 kt. Seas 4 ft.
.FRI...NW wind 25 kt. Seas 7 ft.
.SAT...W wind 20 kt. Seas 5 ft.
.SUN...N wind 25 kt. Seas 11 ft.

$$

PKZ170-181300-
Cape Sarichef to Nikolski Bering Side-
356 PM AKDT Tue Sep 17 2019

...GALE WARNING TONIGHT...

.TONIGHT...SW wind 35 kt. Seas 10 ft in the evening building to 14 
ft. Rain showers.
.WED...W wind 30 kt. Seas 15 ft.
.WED NIGHT...SW wind 25 kt becoming S 15 kt after midnight. Seas
10 ft subsiding to 7 ft after midnight.
.THU...Variable wind 10 kt. Seas 5 ft.
.THU NIGHT...Variable wind 10 kt. Seas 4 ft.
.FRI...NW wind 15 kt. Seas 5 ft.
.SAT...E wind 25 kt. Seas 9 ft.
.SUN...NW wind 25 kt. Seas 11 ft.

$$

PKZ171-181300-
Unalaska Bay-
356 PM AKDT Tue Sep 17 2019

...GALE WARNING WEDNESDAY...

.TONIGHT...SW wind 15 kt in the evening increasing to 30 kt. Seas 5 
ft. Rain showers.
.WED...W wind 35 kt diminishing to 25 kt in the afternoon. Seas
5 ft. Rain showers.
.WED NIGHT...SW wind 15 kt in the evening becoming variable less
than 10 kt. Seas 2 ft.
.THU...E wind 10 kt. Seas 3 ft.
.THU NIGHT...NW wind 10 kt. Seas 3 ft.
.FRI...NW wind 15 kt. Seas 3 ft.
.SAT...SE wind 15 kt. Seas 3 ft.
.SUN...NW wind 20 kt. Seas 7 ft.

$$

PKZ172-181300-
Cape Sarichef to Nikolski Pacific Side-
356 PM AKDT Tue Sep 17 2019

...GALE WARNING THROUGH WEDNESDAY...

.TONIGHT...SW wind 40 kt. Seas building to 19 ft.
.WED...W wind 35 kt. Seas 19 ft subsiding to 14 ft in the
afternoon.
.WED NIGHT...SW wind 25 kt becoming S 15 kt after midnight. Seas
10 ft.
.THU...E wind 15 kt. Seas 6 ft.
.THU NIGHT...N wind 15 kt. Seas 7 ft.
.FRI...NW wind 20 kt. Seas 8 ft.
.SAT...S wind 20 kt. Seas 13 ft.
.SUN...NW wind 25 kt. Seas 13 ft.

$$

PKZ173-181300-
Nikolski to Seguam Island Bering Side-
356 PM AKDT Tue Sep 17 2019

...GALE WARNING TONIGHT...

.TONIGHT...W wind 35 kt. Seas 17 ft.
.WED...W wind 30 kt diminishing to 20 kt in the afternoon. Seas 14 
ft subsiding to 9 ft in the afternoon.
.WED NIGHT...S wind 15 kt. Seas 7 ft. Rain showers.
.THU...E wind 15 kt. Seas 6 ft.
.THU NIGHT...Variable wind 10 kt. Seas 5 ft.
.FRI...Variable wind 10 kt. Seas 4 ft.
.SAT...NE wind 25 kt. Seas 12 ft.
.SUN...NW wind 25 kt. Seas 13 ft.

$$

PKZ174-181300-
Nikolski to Seguam Island Pacific Side-
356 PM AKDT Tue Sep 17 2019

...GALE WARNING TONIGHT...

.TONIGHT...W wind 40 kt. Seas 17 ft.
.WED...W wind 30 kt becoming SW 20 kt in the afternoon. Seas 14 ft
subsiding to 9 ft in the afternoon.
.WED NIGHT...S wind 20 kt. Seas 8 ft.
.THU...E wind 15 kt. Seas 10 ft.
.THU NIGHT...Variable wind 10 kt. Seas 10 ft.
.FRI...NW wind 15 kt. Seas 8 ft.
.SAT...S wind 25 kt. Seas 19 ft.
.SUN...W wind 25 kt. Seas 19 ft.

$$

PKZ175-181300-
Seguam Island to Adak Bering Side-
356 PM AKDT Tue Sep 17 2019

...GALE WARNING TONIGHT...

.TONIGHT...W wind 35 kt. Seas 16 ft.
.WED...SW wind 25 kt. Seas 10 ft. Rain.
.WED NIGHT...SE wind 25 kt. Seas 8 ft.
.THU...NE wind 20 kt. Seas 7 ft.
.THU NIGHT...N wind 15 kt. Seas 5 ft.
.FRI...NW wind 15 kt. Seas 5 ft.
.SAT...N wind 20 kt. Seas 15 ft.
.SUN...W wind 20 kt. Seas 15 ft.

$$

PKZ176-181300-
Seguam Island to Adak Pacific Side-
356 PM AKDT Tue Sep 17 2019

...GALE WARNING TONIGHT...

.TONIGHT...W wind 40 kt. Seas 15 ft.
.WED...SW wind 20 kt becoming S 30 kt in the afternoon. Seas 9 ft.
Rain.
.WED NIGHT...SE wind 30 kt. Seas 13 ft. Rain.
.THU...NE wind 20 kt. Seas 13 ft.
.THU NIGHT...N wind 15 kt. Seas 11 ft.
.FRI...N wind 15 kt. Seas 7 ft.
.SAT THROUGH SUN...W wind 25 kt. Seas 13 ft.

$$

PKZ177-181300-
Adak to Kiska-
356 PM AKDT Tue Sep 17 2019

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

.TONIGHT...W wind 25 kt becoming S after midnight. Seas 10 ft.
.WED...SE wind 30 kt. Seas 12 ft. Rain.
.WED NIGHT...E wind 25 kt. Seas 14 ft.
.THU...N wind 25 kt. Seas 13 ft.
.THU NIGHT...N wind 15 kt. Seas 8 ft.
.FRI...Variable wind 10 kt. Seas 6 ft.
.SAT...NW wind 25 kt. Seas 9 ft.
.SUN...W wind 25 kt. Seas 10 ft.

$$

PKZ178-181300-
Kiska to Attu-
356 PM AKDT Tue Sep 17 2019

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

.TONIGHT...SE wind 20 kt becoming E 30 kt after midnight. Seas 8
ft.
.WED...E wind 30 kt. Seas 14 ft.
.WED NIGHT...NE wind 25 kt. Seas 15 ft.
.THU...N wind 20 kt. Seas 11 ft.
.THU NIGHT...Variable wind 10 kt. Seas 7 ft.
.FRI...SE wind 15 kt. Seas 5 ft.
.SAT...NW wind 20 kt. Seas 9 ft.
.SUN...W wind 20 kt. Seas 9 ft.

$$

PKZ179-181300-
Pribilof Islands Near Shore Waters-
356 PM AKDT Tue Sep 17 2019

...SMALL CRAFT ADVISORY THROUGH WEDNESDAY...

.TONIGHT...Variable wind to 10 kt in the evening becoming W wind 15 
kt. Seas 8 ft.
.WED...NW wind 15 kt. Seas 8 ft.
.WED NIGHT...Variable wind 10 kt. Seas 6 ft.
.THU...Variable wind 10 kt. Seas 5 ft.
.THU NIGHT...N wind 15 kt. Seas 4 ft.
.FRI...NW wind 15 kt. Seas 5 ft.
.SAT THROUGH SUN...NW wind 20 kt. Seas 9 ft.

$$

PKZ180-181300-
Kuskokwim Delta and Etolin Strait-
356 PM AKDT Tue Sep 17 2019

...SMALL CRAFT ADVISORY THROUGH WEDNESDAY...

.TONIGHT...S wind 25 kt becoming W after midnight. Seas 8 ft. 
Widespread rain showers.
.WED...W wind 20 kt. Seas 8 ft.
.WED NIGHT...NW wind 20 kt. Seas 7 ft.
.THU...NE wind 10 kt. Seas 5 ft.
.THU NIGHT...N wind 20 kt. Seas 4 ft.
.FRI...NW wind 25 kt. Seas 6 ft.
.SAT THROUGH SUN...N wind 20 kt. Seas 5 ft.

$$

PKZ181-181300-
North and West of Nunivak Island-
356 PM AKDT Tue Sep 17 2019

...GALE WARNING TONIGHT...

.TONIGHT...NE wind 35 kt. Seas 10 ft. Widespread rain showers.
.WED...N wind 25 kt. Seas 9 ft.
.WED NIGHT...N wind 15 kt. Seas 6 ft.
.THU AND THU NIGHT...N wind 15 kt. Seas 4 ft.
.FRI THROUGH SAT...NW wind 15 kt. Seas 5 ft.
.SUN...NW wind 20 kt. Seas 4 ft.

$$

PKZ185-181300-
Saint Matthew Island Waters-
356 PM AKDT Tue Sep 17 2019

...GALE WARNING TONIGHT...

.TONIGHT...NE wind 35 kt. Seas 14 ft.
.WED...N wind 25 kt. Seas 11 ft.
.WED NIGHT...N wind 15 kt. Seas 7 ft.
.THU...N wind 15 kt. Seas 5 ft.
.THU NIGHT...Variable wind 10 kt. Seas 5 ft.
.FRI THROUGH SAT...NW wind 15 kt. Seas 5 ft.
.SUN...NW wind 20 kt. Seas 5 ft.

$$

294 
FZAK52 PAFC 181155
CWFALU

Coastal Waters Forecast
National Weather Service Anchorage Alaska
355 AM AKDT Wed Sep 18 2019

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.

PKZ199-190015-
355 AM AKDT Wed Sep 18 2019
.SYNOPSIS FOR SOUTHWEST ALASKA+BRISTOL BAY+THE ALASKA
PENINSULA WATERS AND THE ALEUTIAN ISLANDS...

A 986 mb low 45 nm South of Kipnuk moves inland for Midday Wed. 
Its front extends into the Gulf of Alaska through Thu afternoon. A
979 mb low 210 nm Southwest of Attu drives to 120 nm East of
Kodiak City at 985 mb by Fri morning. Its front moves over the 
Aleutians and Alaska Peninsula and across the Gulf of Alaska for 
Fri morning.

$$

PKZ150-190015-
South of the AK Peninsula Sitkinak to Castle Cape-
355 AM AKDT Wed Sep 18 2019

...GALE WARNING TODAY...

.TODAY...SW wind 35 kt. Seas 16 ft.
.TONIGHT...SW wind 30 kt diminishing to 20 kt after midnight. 
Seas 16 ft.
.THU...Variable wind 10 kt. Seas 10 ft subsiding to 6 ft in the 
afternoon.
.THU NIGHT...N wind 25 kt. Seas 7 ft.
.FRI THROUGH SAT...W wind 30 kt. Seas 10 ft.
.SUN...S wind 30 kt. Seas 11 ft.

$$

PKZ155-190015-
South of the AK Peninsula Castle Cape to Cape Sarichef-
355 AM AKDT Wed Sep 18 2019

...GALE WARNING TODAY...

.TODAY...SW wind 35 kt. Seas 18 ft.
.TONIGHT...SW wind 30 kt diminishing to 15 kt after midnight. Seas 
15 ft subsiding to 10 ft after midnight.
.THU...E wind 15 kt. Seas 8 ft.
.THU NIGHT...N wind 15 kt. Seas 6 ft.
.FRI...NW wind 25 kt. Seas 8 ft.
.SAT...S wind 25 kt. Seas 9 ft.
.SUN...SW wind 30 kt. Seas 15 ft.

$$

PKZ160-190015-
Bristol Bay-
355 AM AKDT Wed Sep 18 2019

...SMALL CRAFT ADVISORY THROUGH TONIGHT...

.TODAY...SW wind 30 kt. Seas 8 ft. Rain.
.TONIGHT...W wind 20 kt. Seas 8 ft.
.THU...SW wind 20 kt. Seas 6 ft.
.THU NIGHT...NW wind 15 kt. Seas 4 ft.
.FRI...NW wind 25 kt. Seas 7 ft.
.SAT...W wind 20 kt. Seas 6 ft.
.SUN...NE wind 25 kt. Seas 5 ft.

$$

PKZ165-190015-
Port Heiden to Cape Sarichef-
355 AM AKDT Wed Sep 18 2019

...SMALL CRAFT ADVISORY THROUGH TONIGHT...

.TODAY...SW wind 30 kt. Seas 11 ft.
.TONIGHT...SW wind 30 kt diminishing to 20 kt after midnight. Seas 
11 ft.
.THU...Variable wind 10 kt. Seas 7 ft.
.THU NIGHT...NW wind 15 kt. Seas 4 ft.
.FRI...NW wind 25 kt. Seas 7 ft.
.SAT...S wind 25 kt. Seas 6 ft.
.SUN...NW wind 25 kt. Seas 9 ft.

$$

PKZ170-190015-
Cape Sarichef to Nikolski Bering Side-
355 AM AKDT Wed Sep 18 2019

...GALE WARNING TODAY...

.TODAY...W wind 35 kt diminishing to 25 kt in the afternoon. 
Seas 15 ft.
.TONIGHT...SW wind 25 kt becoming S 15 kt after midnight. 
Seas 10 ft.
.THU...SE wind 10 kt. Seas 6 ft.
.THU NIGHT...N wind 15 kt. Seas 4 ft.
.FRI...NW wind 15 kt. Seas 4 ft.
.SAT...SE wind 25 kt. Seas 6 ft.
.SUN...W wind 25 kt. Seas 10 ft.

$$

PKZ171-190015-
Unalaska Bay-
355 AM AKDT Wed Sep 18 2019

...GALE WARNING TODAY...

.TODAY...W wind 35 kt diminishing to 25 kt this afternoon. 
Seas 5 ft.
.TONIGHT...SW wind 15 kt becoming SE 10 kt after midnight. 
Seas 2 ft.
.THU...SE wind 10 kt becoming E in the afternoon. Seas 2 ft.
.THU NIGHT...N wind 10 kt. Seas 2 ft.
.FRI...NW wind 15 kt. Seas 4 ft.
.SAT...SE wind 20 kt. Seas 2 ft.
.SUN...W wind 25 kt. Seas 3 ft.

$$

PKZ172-190015-
Cape Sarichef to Nikolski Pacific Side-
355 AM AKDT Wed Sep 18 2019

...GALE WARNING TODAY...

.TODAY...W wind 35 kt diminishing to 25 kt in the afternoon. 
Seas 18 ft.
.TONIGHT...SW wind 25 kt becoming S 15 kt after midnight. 
Seas 10 ft.
.THU...SE wind 10 kt. Seas 7 ft.
.THU NIGHT...Variable wind 10 kt. Seas 7 ft.
.FRI...NW wind 15 kt. Seas 8 ft.
.SAT...S wind 25 kt. Seas 8 ft.
.SUN...W wind 30 kt. Seas 15 ft.

$$

PKZ173-190015-
Nikolski to Seguam Island Bering Side-
355 AM AKDT Wed Sep 18 2019

...SMALL CRAFT ADVISORY THROUGH TONIGHT...

.TODAY...W wind 30 kt becoming SW 20 kt in the afternoon. 
Seas 14 ft.
.TONIGHT...SW wind 20 kt becoming SE after midnight. 
Seas 8 ft. Rain.
.THU...E wind 15 kt. Seas 7 ft.
.THU NIGHT...N wind 15 kt. Seas 6 ft.
.FRI...N wind 15 kt. Seas 4 ft.
.SAT...SE wind 20 kt. Seas 6 ft.
.SUN...W wind 30 kt. Seas 15 ft.

$$

PKZ174-190015-
Nikolski to Seguam Island Pacific Side-
355 AM AKDT Wed Sep 18 2019

...SMALL CRAFT ADVISORY THROUGH THURSDAY...

.TODAY...W wind 30 kt becoming SW 20 kt in the afternoon. 
Seas 13 ft.
.TONIGHT...S wind 20 kt. Seas 8 ft.
.THU...E wind 20 kt. Seas 11 ft.
.THU NIGHT...N wind 15 kt. Seas 11 ft.
.FRI...N wind 15 kt. Seas 8 ft.
.SAT...S wind 25 kt. Seas 8 ft.
.SUN...W wind 35 kt. Seas 17 ft.

$$

PKZ175-190015-
Seguam Island to Adak Bering Side-
355 AM AKDT Wed Sep 18 2019

...SMALL CRAFT ADVISORY TODAY...

.TODAY...SW wind 25 kt becoming S 15 kt in the afternoon. 
Seas 10 ft. Rain.
.TONIGHT...SE wind 20 kt. Seas 8 ft. Rain.
.THU...NE wind 15 kt. Seas 7 ft.
.THU NIGHT...N wind 15 kt. Seas 6 ft.
.FRI...SE wind 15 kt. Seas 4 ft.
.SAT...NE wind 30 kt. Seas 8 ft.
.SUN...W wind 30 kt. Seas 14 ft.

$$

PKZ176-190015-
Seguam Island to Adak Pacific Side-
355 AM AKDT Wed Sep 18 2019

...SMALL CRAFT ADVISORY THROUGH THURSDAY...

.TODAY...SW wind 20 kt becoming SE 30 kt in the afternoon. 
Seas 9 ft. Rain.
.TONIGHT...SE wind 30 kt. Seas 12 ft. Rain.
.THU...N wind 15 kt. Seas 12 ft.
.THU NIGHT...N wind 15 kt. Seas 11 ft.
.FRI...E wind 15 kt. Seas 8 ft.
.SAT...S wind 25 kt. Seas 9 ft.
.SUN...W wind 30 kt. Seas 13 ft.

$$

PKZ177-190015-
Adak to Kiska-
355 AM AKDT Wed Sep 18 2019

...SMALL CRAFT ADVISORY THROUGH THURSDAY...

.TODAY...SE wind 30 kt. Seas 12 ft. Rain.
.TONIGHT...NE wind 25 kt. Seas 13 ft.
.THU...N wind 25 kt. Seas 13 ft.
.THU NIGHT...N wind 20 kt. Seas 9 ft.
.FRI...SE wind 15 kt. Seas 6 ft.
.SAT...N wind 25 kt. Seas 8 ft.
.SUN...W wind 25 kt. Seas 11 ft.

$$

PKZ178-190015-
Kiska to Attu-
355 AM AKDT Wed Sep 18 2019

...SMALL CRAFT ADVISORY THROUGH THURSDAY...

.TODAY...E wind 30 kt. Seas 14 ft. Rain.
.TONIGHT...NE wind 30 kt. Seas 15 ft.
.THU...N wind diminising to 10 kt. Seas 11 ft. Areas of fog.
.THU NIGHT...Variable wind 10 kt. Seas 7 ft.
.FRI...SE wind 15 kt. Seas 6 ft.
.SAT...N wind 20 kt. Seas 8 ft.
.SUN...W wind 20 kt. Seas 8 ft.

$$

PKZ179-190015-
Pribilof Islands Near Shore Waters-
355 AM AKDT Wed Sep 18 2019

.TODAY...NW wind 15 kt. Seas 7 ft.
.TONIGHT...Variable wind 10 kt. Seas 6 ft.
.THU...N wind 10 kt. Seas 6 ft.
.THU NIGHT...N wind 15 kt. Seas 5 ft.
.FRI...W wind 20 kt. Seas 5 ft.
.SAT...SE wind 20 kt. Seas 9 ft.
.SUN...N wind 25 kt. Seas 12 ft.

$$

PKZ180-190015-
Kuskokwim Delta and Etolin Strait-
355 AM AKDT Wed Sep 18 2019

.TODAY...W wind 20 kt, except N wind 15 kt N of Cape Newenham. 
Seas 7 ft.
.TONIGHT...Variable wind less than 10 kt. Seas 6 ft.
.THU...Variable wind 10 kt. Seas 5 ft.
.THU NIGHT...N wind 15 kt. Seas 3 ft.
.FRI...NW wind 25 kt. Seas 6 ft.
.SAT...SW wind 20 kt. Seas 5 ft.
.SUN...NE wind 25 kt. Seas 9 ft.

$$

PKZ181-190015-
North and West of Nunivak Island-
355 AM AKDT Wed Sep 18 2019

...SMALL CRAFT ADVISORY TODAY...

.TODAY...N wind 25 kt. Seas 9 ft.
.TONIGHT...N wind 15 kt. Seas 6 ft.
.THU...Variable wind 10 kt. Seas 4 ft.
.THU NIGHT...N wind 15 kt. Seas 3 ft.
.FRI...W wind 20 kt. Seas 5 ft.
.SAT...SW wind 15 kt. Seas 5 ft.
.SUN...NE wind 20 kt. Seas 6 ft.

$$

PKZ185-190015-
Saint Matthew Island Waters-
355 AM AKDT Wed Sep 18 2019

...SMALL CRAFT ADVISORY TODAY...

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

$$

729 
FZAK52 PAFC 182356
CWFALU

Coastal Waters Forecast
National Weather Service Anchorage Alaska
356 PM AKDT Wed Sep 18 2019

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.

PKZ199-191245-
356 PM AKDT Wed Sep 18 2019
.SYNOPSIS FOR SOUTHWEST ALASKA+BRISTOL BAY+THE ALASKA
PENINSULA WATERS AND THE ALEUTIAN ISLANDS...

A front associated with a 986 mb North Pacific low moves across 
the western and central Aleutians Wed evening through Thu. A 1005 
mb western Bering low moves to 380 nm northwest of Saint Paul
Island Fri afternoon at 997 mb.

$$

PKZ150-191245-
South of the AK Peninsula Sitkinak to Castle Cape-
356 PM AKDT Wed Sep 18 2019

...GALE WARNING TONIGHT...

.TONIGHT...SW wind 35 kt diminishing to 20 kt after midnight. Seas 
15 ft subsiding to 10 ft after midnight.
.THU...SW wind 15 kt becoming SE in the afternoon. Seas 10 ft
subsiding to 6 ft in the afternoon. Rain.
.THU NIGHT...NE wind 25 kt. Seas 8 ft.
.FRI...NW wind 25 kt. Seas 8 ft.
.FRI NIGHT...NW wind 30 kt. Seas 12 ft.
.SAT...W wind 30 kt. Seas 11 ft.
.SUN...S wind 30 kt. Seas 11 ft.
.MON...W wind 30 kt. Seas 16 ft.

$$

PKZ155-191245-
South of the AK Peninsula Castle Cape to Cape Sarichef-
356 PM AKDT Wed Sep 18 2019

...SMALL CRAFT ADVISORY TONIGHT...

.TONIGHT...SW wind 30 kt becoming variable 10 kt after midnight. 
From the Shumagin Islands E, SW wind 30 kt diminishing to 15 kt after
midnight. Seas 17 ft subsiding to 10 ft after midnight.
.THU...Variable wind 10 kt becoming E 15 kt in the afternoon. Seas 7
ft.
.THU NIGHT...N wind 15 kt. Seas 7 ft.
.FRI...NW wind 25 kt. Seas 8 ft.
.FRI NIGHT...NW wind 30 kt. Seas 9 ft.
.SAT...S wind 25 kt. Seas 9 ft.
.SUN...SW wind 30 kt. Seas 15 ft.
.MON...W wind 30 kt. Seas 17 ft.

$$

PKZ160-191245-
Bristol Bay-
356 PM AKDT Wed Sep 18 2019

...SMALL CRAFT ADVISORY TONIGHT...

.TONIGHT...W wind 25 kt diminishing to 15 kt by early morning. Seas 
8 ft.
.THU...SW wind 20 kt becoming variable 10 kt in the afternoon. Seas 
6 ft.
.THU NIGHT...NW wind 10 kt increasing to 15 kt after midnight.
Seas 4 ft.
.FRI...NW wind 25 kt. Seas 7 ft.
.FRI NIGHT...NW wind 30 kt. Seas 8 ft.
.SAT...W wind 20 kt. Seas 6 ft.
.SUN...NE wind 25 kt. Seas 5 ft.
.MON...NW wind 25 kt. Seas 5 ft.

$$

PKZ165-191245-
Port Heiden to Cape Sarichef-
356 PM AKDT Wed Sep 18 2019

...SMALL CRAFT ADVISORY THROUGH THURSDAY...

.TONIGHT...SW wind 30 kt diminishing to 20 kt after midnight. Seas
11 ft.
.THU...SW wind 20 kt in the morning becoming variable 10 kt. Seas
8 ft.
.THU NIGHT...NW wind 15 kt. Seas 4 ft.
.FRI AND FRI NIGHT...NW wind 25 kt. Seas 7 ft.
.SAT...S wind 25 kt. Seas 6 ft.
.SUN...NW wind 25 kt. Seas 9 ft.
.MON...W wind 25 kt. Seas 7 ft.

$$

PKZ170-191245-
Cape Sarichef to Nikolski Bering Side-
356 PM AKDT Wed Sep 18 2019

...SMALL CRAFT ADVISORY TONIGHT...

.TONIGHT...SW wind 25 kt becoming S 15 kt after midnight. Seas
10 ft.
.THU...SE wind 15 kt becoming NE in the afternoon. Seas 6 ft.
.THU NIGHT...NW wind 15 kt. Seas 5 ft.
.FRI AND FRI NIGHT...W wind 15 kt. Seas 5 ft.
.SAT...SE wind 25 kt. Seas 7 ft.
.SUN THROUGH MON...W wind 25 kt. Seas 12 ft.

$$

PKZ171-191245-
Unalaska Bay-
356 PM AKDT Wed Sep 18 2019

.TONIGHT...SW wind 15 kt becoming SE after midnight. Gusts to 25 kt
in the evening. Seas 2 ft.
.THU...SE wind 10 kt in the morning becoming variable less than
10 kt. Seas 3 ft.
.THU NIGHT...N wind 10 kt becoming NW after midnight. Seas 3 ft.
.FRI...NW wind 20 kt. Seas 4 ft.
.FRI NIGHT...W wind 15 kt. Seas 2 ft.
.SAT...SE wind 20 kt. Seas 3 ft.
.SUN...W wind 25 kt. Seas 3 ft.
.MON...W wind 20 kt. Seas 3 ft.

$$

PKZ172-191245-
Cape Sarichef to Nikolski Pacific Side-
356 PM AKDT Wed Sep 18 2019

...SMALL CRAFT ADVISORY TONIGHT...

.TONIGHT...SW wind 25 kt becoming S 15 kt after midnight. Seas
10 ft.
.THU...SE wind 15 kt becoming NE in the afternoon. Seas 7 ft.
.THU NIGHT...NE wind 15 kt becoming NW after midnight. Seas 7 ft.
.FRI AND FRI NIGHT...NW wind 20 kt. Seas 8 ft.
.SAT...SE wind 25 kt. Seas 8 ft.
.SUN...W wind 30 kt. Seas 15 ft.
.MON...W wind 25 kt. Seas 15 ft.

$$

PKZ173-191245-
Nikolski to Seguam Island Bering Side-
356 PM AKDT Wed Sep 18 2019

...SMALL CRAFT ADVISORY TONIGHT...

.TONIGHT...S wind 20 kt. Seas 8 ft. Widespread rain showers.
.THU...E wind 15 kt. Seas 7 ft.
.THU NIGHT...N wind 15 kt. Seas 7 ft.
.FRI...NW wind 15 kt. Seas 5 ft.
.FRI NIGHT...SW wind 15 kt. Seas 4 ft.
.SAT...SE wind 20 kt. Seas 6 ft.
.SUN...W wind 30 kt. Seas 15 ft.
.MON...SW wind 20 kt. Seas 14 ft.

$$

PKZ174-191245-
Nikolski to Seguam Island Pacific Side-
356 PM AKDT Wed Sep 18 2019

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

.TONIGHT...SE wind increasing to 25 kt. Seas building to 10 ft. Rain
showers.
.THU...E wind 25 kt. Seas 12 ft.
.THU NIGHT...NE wind 15 kt. Seas 11 ft.
.FRI...NW wind 15 kt. Seas 8 ft.
.FRI NIGHT...E wind 15 kt. Seas 6 ft.
.SAT...S wind 20 kt. Seas 8 ft.
.SUN...W wind 35 kt. Seas 17 ft.
.MON...SW wind 25 kt. Seas 16 ft.

$$

PKZ175-191245-
Seguam Island to Adak Bering Side-
356 PM AKDT Wed Sep 18 2019

...SMALL CRAFT ADVISORY TONIGHT...

.TONIGHT...SE wind 25 kt. Seas 8 ft. Widespread rain showers.
.THU...NE wind 20 kt. Seas 7 ft.
.THU NIGHT...N wind 15 kt. Seas 6 ft. Areas of fog.
.FRI...NW wind 15 kt. Seas 4 ft.
.FRI NIGHT...S wind 15 kt. Seas 4 ft.
.SAT...E wind 30 kt. Seas 8 ft.
.SUN...W wind 30 kt. Seas 14 ft.
.MON...SW wind 20 kt. Seas 13 ft.

$$

PKZ176-191245-
Seguam Island to Adak Pacific Side-
356 PM AKDT Wed Sep 18 2019

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

.TONIGHT...SE wind 30 kt diminishing to 20 kt after midnight. Seas 
13 ft. Rain.
.THU...N wind 20 kt. Seas 13 ft.
.THU NIGHT...N wind 20 kt. Seas 12 ft. Areas of fog.
.FRI...N wind 15 kt. Seas 7 ft.
.FRI NIGHT...SE wind 15 kt. Seas 6 ft.
.SAT...S wind 25 kt. Seas 9 ft.
.SUN...W wind 30 kt. Seas 13 ft.
.MON...SW wind 20 kt. Seas 11 ft.

$$

PKZ177-191245-
Adak to Kiska-
356 PM AKDT Wed Sep 18 2019

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

.TONIGHT...E wind 30 kt in the evening becoming N. Seas 13 ft.
.THU...N wind 25 kt. Seas 13 ft.
.THU NIGHT...N wind 20 kt. Seas 9 ft. Areas of fog.
.FRI...Variable wind 10 kt. Seas 6 ft.
.FRI NIGHT...S wind 15 kt. Seas 5 ft.
.SAT...N wind 25 kt. Seas 8 ft.
.SUN...W wind 25 kt. Seas 11 ft.
.MON...SW wind 20 kt. Seas 10 ft.

$$

PKZ178-191245-
Kiska to Attu-
356 PM AKDT Wed Sep 18 2019

...SMALL CRAFT ADVISORY THROUGH THURSDAY...

.TONIGHT...NE wind 30 kt. Seas 15 ft.
.THU...N wind 20 kt. Seas 11 ft. Areas of fog.
.THU NIGHT...Variable wind 10 kt. Seas 7 ft. Areas of fog.
.FRI...S wind 15 kt. Seas 6 ft.
.FRI NIGHT...SE wind 15 kt. Seas 5 ft.
.SAT...N wind 20 kt. Seas 8 ft.
.SUN...W wind 20 kt. Seas 8 ft.
.MON...SW wind 20 kt. Seas 8 ft.

$$

PKZ179-191245-
Pribilof Islands Near Shore Waters-
356 PM AKDT Wed Sep 18 2019

.TONIGHT...Variable wind 10 kt. Seas 6 ft.
.THU...Variable wind 10 kt. Seas 4 ft.
.THU NIGHT...N wind 15 kt. Seas 5 ft.
.FRI...NW wind 15 kt. Seas 5 ft.
.FRI NIGHT...SW wind 20 kt. Seas 5 ft.
.SAT...SE wind 20 kt. Seas 9 ft.
.SUN...N wind 25 kt. Seas 12 ft.
.MON...W wind 20 kt. Seas 10 ft.

$$

PKZ180-191245-
Kuskokwim Delta and Etolin Strait-
356 PM AKDT Wed Sep 18 2019

.TONIGHT...NW wind 20 kt becoming NE 10 kt after midnight. Seas
7 ft.
.THU...E wind 10 kt becoming NE in the afternoon. Seas 5 ft.
.THU NIGHT...N wind 15 kt. Seas 4 ft.
.FRI AND FRI NIGHT...NW wind 25 kt. Seas 6 ft.
.SAT...SW wind 25 kt. Seas 7 ft.
.SUN...NE wind 25 kt. Seas 9 ft.
.MON...W wind 25 kt. Seas 8 ft.

$$

PKZ181-191245-
North and West of Nunivak Island-
356 PM AKDT Wed Sep 18 2019

.TONIGHT...N wind 15 kt. Seas 6 ft.
.THU...NE wind 15 kt. Seas 4 ft.
.THU NIGHT...N wind 15 kt. Seas 3 ft.
.FRI...NW wind 15 kt. Seas 4 ft.
.FRI NIGHT...SW wind 25 kt. Seas 5 ft.
.SAT...SW wind 30 kt. Seas 9 ft.
.SUN...NE wind 20 kt. Seas 6 ft.
.MON...W wind 20 kt. Seas 6 ft.

$$

PKZ185-191245-
Saint Matthew Island Waters-
356 PM AKDT Wed Sep 18 2019

.TONIGHT...NE wind 15 kt. Seas 7 ft.
.THU...Variable wind 10 kt. Seas 5 ft.
.THU NIGHT...NW wind 15 kt. Seas 5 ft.
.FRI...W wind 20 kt. Seas 5 ft.
.FRI NIGHT...SW wind 30 kt. Seas 10 ft.
.SAT...NW wind 25 kt. Seas 10 ft.
.SUN...NW wind 20 kt. Seas 7 ft.
.MON...W wind 20 kt. Seas 7 ft.

$$

011 
FZAK52 PAFC 191225
CWFALU

Coastal Waters Forecast
National Weather Service Anchorage Alaska
425 AM AKDT Thu Sep 19 2019

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.

PKZ199-200130-
425 AM AKDT Thu Sep 19 2019
.SYNOPSIS FOR SOUTHWEST ALASKA+BRISTOL BAY+THE ALASKA
PENINSULA WATERS AND THE ALEUTIAN ISLANDS...

A 993 mb low 200 nm south of Atka moves to 100 nm east of Kodiak
City at 983 mb by Fri morning. A 1007 mb North Kamchatka low Thu
morning moves to 400 nm north of Shemya at 1004 mb by Fri morning
and then moves to 110 nm West of Mekoryuk at 996 mb by Sat morning. 
A new front approaches the western Aleutians Sat morning.

$$

PKZ150-200130-
South of the AK Peninsula Sitkinak to Castle Cape-
425 AM AKDT Thu Sep 19 2019

...SMALL CRAFT ADVISORY THROUGH FRIDAY...

.TODAY...SW wind 15 kt becoming SE in the afternoon.
Seas 10 ft. Rain.
.TONIGHT...NE wind 25 kt. Seas 7 ft.
.FRI...NW wind 25 kt. Seas 8 ft.
.FRI NIGHT...NW wind 30 kt. Seas 11 ft.
.SAT...SW wind 30 kt. Seas 10 ft.
.SUN...SE wind 25 kt. Seas 12 ft.
.MON...W wind 30 kt. Seas 19 ft.

$$

PKZ155-200130-
South of the AK Peninsula Castle Cape to Cape Sarichef-
425 AM AKDT Thu Sep 19 2019

...SMALL CRAFT ADVISORY TODAY AND FRIDAY...

.TODAY...E wind 15 kt. Seas 8 ft.
.TONIGHT...N wind 15 kt. Seas 6 ft.
.FRI THROUGH FRI NIGHT...NW wind 25 kt. Seas 9 ft.
.SAT...S wind 25 kt. Seas 8 ft.
.SUN...SW wind 30 kt. Seas 15 ft.
.MON...W wind 25 kt. Seas 15 ft.

$$

PKZ160-200130-
Bristol Bay-
425 AM AKDT Thu Sep 19 2019

...SMALL CRAFT ADVISORY FRIDAY...

.TODAY...SW wind 20 kt. Seas 6 ft.
.TONIGHT...NW wind 10 kt increasing to 15 kt after midnight.
Seas 4 ft.
.FRI...NW wind 25 kt. Seas 7 ft.
.FRI NIGHT...NW wind 30 kt. Seas 8 ft.
.SAT...SW wind 25 kt. Seas 6 ft.
.SUN...E wind 25 kt. Seas 6 ft.
.MON...NW wind 30 kt. Seas 8 ft.

$$

PKZ165-200130-
Port Heiden to Cape Sarichef-
425 AM AKDT Thu Sep 19 2019

...SMALL CRAFT ADVISORY FRIDAY...

.TODAY...SW wind 20 kt in the morning becoming variable 10 kt.
Seas 7 ft.
.TONIGHT...NW wind 15 kt. Seas 4 ft.
.FRI...NW wind 25 kt. Seas 6 ft.
.FRI NIGHT...W wind 25 kt. Seas 8 ft.
.SAT...S wind 25 kt. Seas 7 ft.
.SUN...NE wind 30 kt. Seas 12 ft.
.MON...W wind 25 kt. Seas 12 ft.

$$

PKZ170-200130-
Cape Sarichef to Nikolski Bering Side-
425 AM AKDT Thu Sep 19 2019

.TODAY...E wind 15 kt. Seas 6 ft.
.TONIGHT...NW wind 15 kt. Seas 4 ft.
.FRI...NW wind 20 kt. Seas 5 ft. Areas of fog.
.FRI NIGHT...W wind 15 kt. Seas 5 ft.
.SAT...SE wind 25 kt. Seas 6 ft.
.SUN...NW wind 35 kt. Seas 18 ft.
.MON...W wind 30 kt. Seas 17 ft.

$$

PKZ171-200130-
Unalaska Bay-
425 AM AKDT Thu Sep 19 2019

.TODAY...SE wind 10 kt in the morning becoming variable less than
10 kt. Seas 3 ft.
.TONIGHT...N wind 10 kt becoming NW after midnight. Seas 3 ft.
.FRI...NW wind 15 kt. Seas 4 ft.
.FRI NIGHT...W wind 15 kt. Seas 2 ft.
.SAT...SE wind 20 kt. Seas 3 ft.
.SUN...NW wind 35 kt. Seas 16 ft.
.MON...W wind 30 kt. Seas 13 ft.

$$

PKZ172-200130-
Cape Sarichef to Nikolski Pacific Side-
425 AM AKDT Thu Sep 19 2019

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

.TODAY...SE wind 15 kt. Seas 6 ft.
.TONIGHT...NW wind 15 kt. Seas 8 ft.
.FRI...NW wind 20 kt. Seas 8 ft. Areas of fog.
.FRI NIGHT...W wind 20 kt. Seas 7 ft.
.SAT...SE wind 25 kt. Seas 8 ft.
.SUN...W wind 40 kt. Seas 18 ft.
.MON...W wind 35 kt. Seas 15 ft.

$$

PKZ173-200130-
Nikolski to Seguam Island Bering Side-
425 AM AKDT Thu Sep 19 2019

.TODAY...E wind 15 kt. Seas 7 ft.
.TONIGHT...NW wind 15 kt. Seas 6 ft.
.FRI...NW wind 15 kt. Seas 5 ft. Areas of fog.
.FRI NIGHT...SW wind 15 kt. Seas 4 ft.
.SAT...E wind 30 kt. Seas 8 ft.
.SUN...NW wind 30 kt. Seas 12 ft.
.MON...W wind 20 kt. Seas 11 ft.

$$

PKZ174-200130-
Nikolski to Seguam Island Pacific Side-
425 AM AKDT Thu Sep 19 2019

...SMALL CRAFT ADVISORY THROUGH FRIDAY...

.TODAY...E wind 25 kt. Seas 11 ft.
.TONIGHT...NE wind 15 kt. Seas 10 ft.
.FRI...NW wind 15 kt. Seas 8 ft. Areas of fog.
.FRI NIGHT...Variable wind 10 kt. Seas 6 ft.
.SAT...SE wind 25 kt. Seas 10 ft.
.SUN...NW wind 30 kt. Seas 13 ft.
.MON...W wind 25 kt. Seas 10 ft.

$$

PKZ175-200130-
Seguam Island to Adak Bering Side-
425 AM AKDT Thu Sep 19 2019

...SMALL CRAFT ADVISORY TODAY...

.TODAY...NE wind 20 kt. Seas 8 ft.
.TONIGHT...N wind 15 kt. Seas 6 ft. Areas of fog.
.FRI...NW wind 15 kt. Seas 4 ft. Areas of fog.
.FRI NIGHT...S wind 15 kt. Seas 4 ft.
.SAT...NE wind 30 kt. Seas 8 ft.
.SUN...NW wind 30 kt. Seas 9 ft.
.MON...W wind 20 kt. Seas 8 ft.

$$

PKZ176-200130-
Seguam Island to Adak Pacific Side-
425 AM AKDT Thu Sep 19 2019

...SMALL CRAFT ADVISORY THROUGH TONIGHT...

.TODAY...N wind 20 kt. Seas 12 ft.
.TONIGHT...N wind 20 kt. Seas 11 ft. Areas of fog.
.FRI...N wind 15 kt. Seas 7 ft. Areas of fog.
.FRI NIGHT...S wind 15 kt. Seas 5 ft.
.SAT...NE wind 30 kt. Seas 10 ft.
.SUN...NW wind 30 kt. Seas 10 ft.
.MON...W wind 20 kt. Seas 8 ft.

$$

PKZ177-200130-
Adak to Kiska-
425 AM AKDT Thu Sep 19 2019

...SMALL CRAFT ADVISORY THROUGH TONIGHT...

.TODAY...N wind 25 kt. Seas 13 ft.
.TONIGHT...N wind 20 kt. Seas 9 ft. Areas of fog.
.FRI...SW wind 15 kt. Seas 6 ft. Areas of fog.
.FRI NIGHT...S wind 15 kt. Seas 4 ft.
.SAT...NE wind 25 kt. Seas 8 ft.
.SUN...W wind 25 kt. Seas 8 ft.
.MON...SW wind 25 kt. Seas 7 ft.

$$

PKZ178-200130-
Kiska to Attu-
425 AM AKDT Thu Sep 19 2019

...SMALL CRAFT ADVISORY TODAY...

.TODAY...N wind 20 kt. Seas 11 ft. Areas of fog.
.TONIGHT...SW wind 15 kt. Seas 7 ft. Areas of fog.
.FRI...SW wind 15 kt. Seas 5 ft. Areas of fog.
.FRI NIGHT...SE wind 15 kt. Seas 4 ft.
.SAT...N wind 20 kt. Seas 7 ft.
.SUN...W wind 20 kt. Seas 8 ft.
.MON...SW wind 30 kt. Seas 8 ft.

$$

PKZ179-200130-
Pribilof Islands Near Shore Waters-
425 AM AKDT Thu Sep 19 2019

.TODAY...Variable wind 10 kt. Seas 4 ft.
.TONIGHT...N wind 15 kt. Seas 5 ft.
.FRI...NW wind 15 kt. Seas 5 ft.
.FRI NIGHT...SW wind 25 kt. Seas 9 ft.
.SAT...E wind 25 kt. Seas 8 ft.
.SUN...N wind 30 kt. Seas 10 ft.
.MON...W wind 20 kt. Seas 9 ft.

$$

PKZ180-200130-
Kuskokwim Delta and Etolin Strait-
425 AM AKDT Thu Sep 19 2019

...SMALL CRAFT ADVISORY FRIDAY...

.TODAY...E wind 10 kt becoming NE in the afternoon. Seas 5 ft.
.TONIGHT...N wind 15 kt. Seas 3 ft.
.FRI...NW wind 25 kt. Seas 6 ft.
.FRI NIGHT...W wind 25 kt. Seas 7 ft.
.SAT...SW wind 25 kt. Seas 8 ft.
.SUN...NE wind 25 kt. Seas 8 ft.
.MON...NW wind 25 kt. Seas 8 ft.

$$

PKZ181-200130-
North and West of Nunivak Island-
425 AM AKDT Thu Sep 19 2019

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

$$

PKZ185-200130-
Saint Matthew Island Waters-
425 AM AKDT Thu Sep 19 2019

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

$$

Southcentral and Southwest Alaska Forecast Discussion...CORRECTED
National Weather Service Anchorage AK
600 PM AKDT Mon Sep 16 2019

...Updated Extended Discussion...

.ANALYSIS AND UPPER LEVELS...

An active progressive upper level wave pattern is in place across
Alaska as the low which brought widespread rain to Southern
Alaska the last two days shifts east through the Gulf of Alaska.
This is promoting weak off offshore flow along the North Gulf
Coast which is helping to clear out some of the lower clouds.
Farther to the north, an Arctic trough is digging southward across
the Brooks Range and is beginning to impinge upon the Alaska
Range. A deep trough is stationed over the western Bering Sea,
and this trough is tapping an impressive region of low level
subtropical moisture. This low will be the beginning of a period
of rainy and stormy weather for the Southern Alaska and North
Pacific regions heading through the weekend.

&&

.MODEL DISCUSSION...

The numerical weather models are in surprisingly good overall
agreement with a continuation of the overall "progressive" upper
level flow and general storm track. With the next low moving into
Southern Alaska Tuesday and Wednesday, models are in excellent
agreement with widespread rain and the overall low track
(regarding details of gap winds in Southcentral). Forecast
confidence is very high.

&&

.AVIATION...

PANC...VFR conditions are expected to prevail, along with light
winds, through the TAF period before rain returns to the terminal
Tue evening when conditions will likely drop to MVFR at times.

&&

.SHORT TERM FORECAST SOUTHCENTRAL ALASKA (Days 1 through 3/Mon
night through Thursday night)...

Low pressure over the Gulf exits southeast tonight with a weak
ridge building across the western waters overnight. An Arctic low
diving across the northwest mainland this evening will bring
increased chances for rain overnight across the Susitna &
Matanuska Valleys as well as the Copper River Basin with isolated
amounts farther south. This frontal push will increase offshore
flow with gusty conditions expected along the Gulf coastal
locations. In areas outside of these winds, patchy fog is possible
as temperatures cool close to dewpoints with the recent abundant
rainfall.

Attention then quickly turns to the next front as it
moves across the Western Gulf and Kodiak Island Tuesday morning,
making progress northward over the Kenai Peninsula during the
afternoon. Rain quickly spreads north to the rest of Southcentral
Tuesday evening through Wednesday. Deep subtropical moisture
with this low pressure system will bring appreciable rainfall
amounts area-wide. Gusty south to east winds will be strongest
late Tuesday night through Wednesday morning...with gale force
strength along the Northeastern Gulf and Prince William Sound.
Turnagain Arm and the Upper Hillside will see strong winds gusting
between 50 to 60 mph...and may possibly be stronger, so stay
tuned for updates.

On Wednesday, the low driving the front swiftly moves east from
Southwest AK to the Copper River Basin...diminishing rapidly as
it moves across the terrain. Rain will become less organized
during the afternoon and winds taper down; although, another
system will should make for light rain again through Thursday as
weak disturbances move up from a storm system tracking eastward
along the Eastern Aleutians and Alaska Peninsula.

&&

.FIRE WEATHER...Fire weather concerns will continue to diminish as
we remain in a very typically Fall pattern. Tonight, a cooler
upper level trough will dive into the Susitna Valley and the
Copper River Basin. This will bring some steady showers. Then a
much stronger front will start to move into the area from west to
east late Tue into Wed. This front will bring gusty southeast
winds through the typical gaps (Turnagain Arm and Knik Arms, the
Copper River Valley, etc.). It will also bring healthy amounts of
wetting rains to just about all areas with QPF amounts averaging
near 1 inch.

&&

.SHORT TERM FORECAST SOUTHWEST ALASKA (Days 1 through 3: Mon Night
through Thu)...

A ridge cresting over Southwest Alaska today is bringing a quick
period of diminishing cloud cover along with a drier,
northwesterly flow. The exception to this is along the upslope
side of the Kilbuck and Aleutian Ranges where some low stratus
will linger through the evening hours. Radiational cooling under
the ridge will lead areas of fog overnight, especially for
locations that saw the majority of clearing this afternoon such as
interior Bristol Bay and the Kuskokwim Valley.

Rain and gusty southerly winds return Tuesday morning along the
coast as a warm front moves onshore. The front lifts northeast
through the day as it continues to push widespread rain over the
interior Southwest. A trailing shortwave then treks across the
Southwest on Wednesday as the main surface low moves over the Y-K
Delta. These two features will help maintain a southwesterly
onshore wind and allow showers to continue across the region
through late Wednesday. A weak trough then drops over the northern
half of Southwest Alaska early Thursday, allowing for a colder,
drier northwesterly flow across the Kuskokwim Delta with
continued showers along the Alaska and Aleutian ranges.

&&

.SHORT TERM FORECAST BERING SEA/ALEUTIANS (Days 1 through 3: Mon
night through Thu)...

A surface low over Amchitka is currently swinging a warm front
toward the eastern Aleutians and the AKPEN with a trailing cold
front tracking east towards Nikolski. Widespread areas of small-
craft winds and rain will continue along both fronts as the system
continues to jog east tomorrow. Small-craft winds will increase
to gales along the warm front as it occludes and lifts north of
the Pribilofs. Northwesterly gales will also develop over the
southern Bering and central Aleutians tomorrow as colder air wraps
around the back side of the surface low. Westerly gales persist
through the first half of Wednesday along the Pacific side of the
eastern Aleutians and AKPEN as the low moves onshore near Kipnuk.

Farther west, a weak ridge will build behind this first system,
moving from the western Aleutians Tuesday to the central and
eastern Aleutians Wednesday. Upstream, a deepening north Pacific
low will sweep a front with widespread rain and areas of gales
over the Western Aleutians Tuesday night into Wednesday. This
feature will then weaken as it slides east, with the center of
circulation staying well south of the chain through Thursday.

&&

.MARINE (Days 3 through 5)...

Beginning the extended period marine forecast on Thursday, there
will be a low moving northeast from the North pacific into the
Gulf of Alaska. This low will reach the North Gulf by early
morning Friday, likely bringing gale force winds to much of the
North Coast as the warm front/barrier jet increases in strength.
The low will then occlude and remain in the Gulf of Alaska through
Saturday with winds becoming westerly/offshore as the low moves
east toward the ALCAN. Yet another strong low moves into the Gulf
of Alaska on Sunday and Monday as the storm track remains directed
over the Gulf with much more quiescent weather over the Bering
Sea through the weekend.

&&

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

An active weather pattern continues through the extended period.
An upper level low remains in place over the northern part of the
state while several troughs rotate across the southern part of the
state. The first surface low travels south of the Aleutian Chain
and arrives over the Gulf of Alaska Friday. This low will bring
cloudy skies, rain, and gusty winds as it traverses into the Gulf
and eventually lifts inland over the southern half of the state
for the weekend. A second low arrives over the Gulf of Alaska via
a similar path as the first by late Sunday. This will continue the
trend for cloudy skies, rain, and gusty winds. Models have been
in fair agreement regarding an unsettled weather pattern through
early next week.

&&

.AFC WATCHES/WARNINGS/ADVISORIES...
PUBLIC...NONE.
MARINE...Gale Warning 130 351 352 155 172-178 185 411-413.
FIRE WEATHER...NONE.

&&

SYNOPSIS AND MODEL DISCUSSION...JA
SOUTHCENTRAL ALASKA...KH
SOUTHWEST ALASKA/BERING SEA/ALEUTIANS...TM
MARINE/LONG TERM...JA/KO