Alert archive / Alaska / Small Craft Advisories in 2021

Small Craft Advisory 646, NWS Anchorage, AK

August 17, 2021

NWS Anchorage, AK issued this small craft advisory at Aug 17, 2021, 3:37 AM AKDT. It was in force for 12 hr.

The area

The counties it named.

The facts

Issued: Aug 17, 2021, 3:37 AM AKDT (11:37 UTC)
Expired: Aug 17, 2021, 3:14 PM AKDT
In force: 12 hr
Issued by: NWS Anchorage, AK

The text

As transmitted.

691 
FZAK51 PAFC 171137
CWFAER

Coastal Waters Forecast
National Weather Service Anchorage Alaska
337 AM AKDT Tue Aug 17 2021

Coastal Waters Forecast for the Northern Gulf of Alaska Coast
up to 100 nm out including Kodiak Island and Cook Inlet.

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.

PKZ197-180030-
337 AM AKDT Tue Aug 17 2021
.SYNOPSIS FOR THE NORTH GULF COAST+KODIAK ISLAND WATERS+
COOK INLET...

A 1004 mb low 40 nm northeast of Kodiak city will move to 10 nm 
southwest of Middleton Island Wed morning and then weaken to 1014 
mb Wed afternoon. Its associated front will stretch across the 
Gulf through Wed afternoon.

$$

PKZ119-180030-
Cape Suckling to Cape Cleare-
337 AM AKDT Tue Aug 17 2021

...GALE WARNING TODAY...

.TODAY...S wind 30 kt becoming SW 15 kt in the afternoon. Near the
coast, E wind 35 kt diminishing to 25 kt in the afternoon. Seas 9 ft.
.TONIGHT...SW wind 20 kt. Along the coast, E wind 20 kt. Seas 7 ft.
.WED...NW wind 15 kt. Seas 7 ft.
.WED NIGHT...Variable wind 10 kt. Seas 6 ft.
.THU...S wind 15 kt. Seas 5 ft.
.FRI...W wind 25 kt. Seas 8 ft.
.SAT...NW wind 20 kt. Seas 6 ft.

$$

PKZ120-180030-
Cape Cleare to Gore Point-
337 AM AKDT Tue Aug 17 2021

...SMALL CRAFT ADVISORY TODAY...

.TODAY...NE wind 25 kt. Seas 7 ft.
.TONIGHT...N wind 20 kt becoming variable 10 kt after midnight. Seas
7 ft.
.WED...W wind 15 kt. Seas 6 ft.
.WED NIGHT...SW wind 15 kt. Seas 5 ft.
.THU...SW wind 20 kt. Seas 5 ft.
.FRI...W wind 25 kt. Seas 9 ft.
.SAT...W wind 15 kt. Seas 5 ft.

$$

PKZ121-180030-
Resurrection Bay-
337 AM AKDT Tue Aug 17 2021

.TODAY...S wind 10 kt early becoming N. Seas 2 ft.
.TONIGHT...N wind 10 kt. Seas 2 ft.
.WED...N wind 15 kt diminishing to 10 kt in the afternoon. Seas 3 
ft.
.WED NIGHT...S wind 10 kt. Seas 2 ft.
.THU THROUGH FRI...S wind 15 kt. Seas 3 ft.
.SAT...N wind 15 kt. Seas 3 ft.

$$

PKZ125-180030-
Prince William Sound-
337 AM AKDT Tue Aug 17 2021

.TODAY...E wind 20 kt. Seas 4 ft. Rain.
.TONIGHT...N wind 15 kt. Seas 3 ft.
.WED...NW wind 10 kt. Seas 2 ft.
.WED NIGHT...Variable wind less than 10 kt. Seas 2 ft.
.THU...SE wind 10 kt. Seas 2 ft.
.FRI THROUGH SAT...NW wind 15 kt. Seas 3 ft.

$$

PKZ126-180030-
Port Valdez-
337 AM AKDT Tue Aug 17 2021

.TODAY...Variable wind less than 10 kt. Seas 2 ft. Rain.
.TONIGHT...Variable wind less than 10 kt becoming NE 10 kt after
midnight. Seas 2 ft.
.WED...NE wind 10 kt in the morning becoming variable less than
10 kt. Seas 2 ft.
.WED NIGHT...Variable wind less than 10 kt. Seas 2 ft.
.THU...Variable wind 10 kt. Seas 2 ft.
.FRI...W wind 10 kt. Seas 2 ft.
.SAT...Variable wind less than 10 kt. Seas 2 ft.

$$

PKZ127-180030-
Valdez Narrows-
337 AM AKDT Tue Aug 17 2021

.TODAY...SW wind 15 kt early becoming N 20 kt. Seas 3 ft. Rain.
.TONIGHT...N wind 15 kt diminishing to 10 kt after midnight. Seas
3 ft.
.WED...N wind 10 kt becoming E in the afternoon. Seas 2 ft.
.WED NIGHT...SW wind 10 kt. Seas 2 ft.
.THU...Variable wind 10 kt. Seas 2 ft.
.FRI...SW wind 15 kt. Seas 3 ft.
.SAT...NE wind 15 kt. Seas 3 ft.

$$

PKZ128-180030-
Valdez Arm-
337 AM AKDT Tue Aug 17 2021

.TODAY...SE wind 15 kt in the morning becoming N 10. Seas 3 ft. 
Rain.
.TONIGHT...NE wind 10 kt. Seas 2 ft.
.WED...NE wind 10 kt becoming NW in the afternoon. Seas 2 ft.
.WED NIGHT...Variable wind less than 10 kt. Seas 2 ft.
.THU...NE wind 10 kt. Seas 2 ft.
.FRI...SW wind 10 kt. Seas 2 ft.
.SAT...NE wind 10 kt. Seas 2 ft.

$$

PKZ129-180030-
Passage Canal-
337 AM AKDT Tue Aug 17 2021

.TODAY...E wind 20 kt early becoming variable 10 kt. Gusts to 30 kt 
near Whittier early. Seas 2 ft. Rain.
.TONIGHT...W wind 10 kt increasing to 20 kt after midnight. Gusts to
25 kt near Whittier after midnight. Seas 2 ft.
.WED...W wind 20 kt. Seas 2 ft.
.WED NIGHT...E wind 10 kt. Seas 2 ft.
.THU THROUGH SAT...E wind 10 kt. Seas 2 ft.

$$

PKZ130-180030-
West of Barren Islands including Kamishak Bay-
337 AM AKDT Tue Aug 17 2021

.TODAY...NE wind 20 kt diminishing to 10 kt in the afternoon. Seas 5
ft.
.TONIGHT...Variable wind 10 kt. Seas 2 ft.
.WED...W wind 15 kt. Seas 3 ft.
.WED NIGHT...Variable wind 10 kt. Seas 2 ft.
.THU...SW wind 25 kt. Seas 6 ft.
.FRI...W wind 30 kt. Seas 8 ft.
.SAT...W wind 20 kt. Seas 5 ft.

$$

PKZ131-180030-
Barren Islands East-
337 AM AKDT Tue Aug 17 2021

...SMALL CRAFT ADVISORY TODAY...

.TODAY...NW wind 15 kt. Seas 8 ft.
.TONIGHT...Variable wind 10 kt. Seas 7 ft.
.WED...W wind 15 kt. Seas 6 ft.
.WED NIGHT...SW wind 15 kt. Seas 5 ft.
.THU...SW wind 20 kt. Seas 5 ft.
.FRI...W wind 30 kt. Seas 10 ft.
.SAT...W wind 20 kt. Seas 7 ft.

$$

PKZ132-180030-
Marmot Island to Sitkinak-
337 AM AKDT Tue Aug 17 2021

...SMALL CRAFT ADVISORY TODAY...

.TODAY...SW wind 25 kt. Seas 9 ft.
.TONIGHT...SW wind 20 kt. Seas 7 ft.
.WED...Variable wind 10 kt. Seas 7 ft.
.WED NIGHT...SW wind 15 kt. Seas 6 ft.
.THU THROUGH FRI...W wind 20 kt. Seas 6 ft.
.SAT...SW wind 15 kt. Seas 5 ft.

$$

PKZ136-180030-
Chiniak Bay-
337 AM AKDT Tue Aug 17 2021

.TODAY...Variable wind less than 10 kt. Seas 3 ft.
.TONIGHT...Variable wind less than 10 kt. Seas 2 ft.
.WED THROUGH WED NIGHT...Variable wind less than 10 kt. Seas 2 ft.
.THU THROUGH FRI...W wind 15 kt. Seas 3 ft.
.SAT...SW wind 10 kt. Seas 2 ft.

$$

PKZ137-180030-
Marmot Bay-
337 AM AKDT Tue Aug 17 2021

.TODAY...Variable wind less than 10 kt. Seas 2 ft.
.TONIGHT...Variable wind less than 10 kt. Seas 2 ft.
.WED...W wind 10 kt. Seas 2 ft.
.WED NIGHT...SW wind 10 kt. Seas 2 ft.
.THU THROUGH FRI...W wind 20 kt. Seas 4 ft.
.SAT...W wind 10 kt. Seas 2 ft.

$$

PKZ138-180030-
Shelikof Strait-
337 AM AKDT Tue Aug 17 2021

.TODAY...NE wind 15 kt. Seas 3 ft. Rain.
.TONIGHT...Variable wind 10 kt. Seas 3 ft.
.WED...Variable wind 10 kt. Seas 3 ft.
.WED NIGHT...SW wind 15 kt. Seas 3 ft.
.THU...SW wind 25 kt. Seas 6 ft.
.FRI...W wind 20 kt. Seas 5 ft.
.SAT...W wind 15 kt. Seas 3 ft.

$$

PKZ139-180030-
Cook Inlet Kalgin Island to Point Bede-
337 AM AKDT Tue Aug 17 2021

.TODAY...N wind 20 kt diminishing to 10 kt in the afternoon. Seas 5 
ft subsiding to 3 ft in the afternoon.
.TONIGHT...Variable wind less than 10 kt. Seas 2 ft.
.WED...Variable wind less than 10 kt. Seas 1 ft.
.WED NIGHT...S wind 15 kt. Seas 3 ft.
.THU...SW wind 25 kt. Seas 6 ft.
.FRI...W wind 25 kt. Seas 5 ft.
.SAT...N wind 15 kt. Seas 3 ft.

$$

PKZ140-180030-
Cook Inlet North of Kalgin Island-
337 AM AKDT Tue Aug 17 2021

.TODAY...NE wind 15 kt. Seas 3 ft.
.TONIGHT...Variable wind less than 10 kt. Seas 1 ft.
.WED...Variable wind less than 10 kt. Seas 1 ft.
.WED NIGHT...S wind 10 kt. Seas 2 ft.
.THU...S wind 25 kt. Seas 6 ft.
.FRI...W wind 15 kt. Seas 5 ft.
.SAT...NW wind 10 kt. Seas 2 ft.

$$

PKZ141-180030-
Kachemak Bay-
337 AM AKDT Tue Aug 17 2021

.TODAY...N wind 10 kt in the morning becoming variable less than
10 kt. Seas 2 ft.
.TONIGHT...Variable wind less than 10 kt.
.WED...Variable wind less than 10 kt becoming SW 10 kt in the
afternoon. Seas 2 ft.
.WED NIGHT...SE wind 10 kt. Seas 2 ft.
.THU...S wind 20 kt. Seas 4 ft.
.FRI...W wind 20 kt. Seas 6 ft.
.SAT...N wind 10 kt. Seas 2 ft.

$$

1 follow-up statement

272 
FZAK51 PAFC 172314
CWFAER

Coastal Waters Forecast
National Weather Service Anchorage Alaska
314 PM AKDT Tue Aug 17 2021

Coastal Waters Forecast for the Northern Gulf of Alaska Coast
up to 100 nm out including Kodiak Island and Cook Inlet.

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.

PKZ197-181200-
314 PM AKDT Tue Aug 17 2021

.SYNOPSIS FOR THE NORTH GULF COAST+KODIAK ISLAND WATERS+
COOK INLET...

A 1005 mb low 20 nm east of Montague Island moves to 25 nm south 
of Yakutat Thurs afternoon weakening to 1022 mb. Its front 
stretches across the northern Gulf through Thurs afternoon.

$$

PKZ119-181200-
Cape Suckling to Cape Cleare-
314 PM AKDT Tue Aug 17 2021

.TONIGHT...SW wind 20 kt except E wind along the coast E of Montague
Island. Seas 7 ft.
.WED...NW wind 15 kt. Seas 7 ft.
.WED NIGHT...Variable wind 10 kt. Seas 6 ft. Patchy fog.
.THU...Variable wind 10 kt. Seas 5 ft.
.THU NIGHT...S wind 15 kt. Seas 5 ft.
.FRI...W wind 25 kt. Seas 7 ft.
.SAT...NW wind 20 kt. Seas 6 ft.
.SUN...SE wind 15 kt. Seas 4 ft.

$$

PKZ120-181200-
Cape Cleare to Gore Point-
314 PM AKDT Tue Aug 17 2021

.TONIGHT...NW wind 15 kt. Seas 7 ft.
.WED...W wind 15 kt. Seas 6 ft.
.WED NIGHT...SW wind 15 kt. Seas 5 ft. Patchy fog.
.THU...Variable wind 10 kt. Seas 4 ft.
.THU NIGHT...SW wind 20 kt. Seas 4 ft.
.FRI...W wind 30 kt. Seas 9 ft.
.SAT...W wind 15 kt. Seas 5 ft.
.SUN...SE wind 15 kt. Seas 5 ft.

$$

PKZ121-181200-
Resurrection Bay-
314 PM AKDT Tue Aug 17 2021

.TONIGHT...N wind 10 kt. Seas 2 ft.
.WED...N wind 15 kt diminishing to 10 kt in the afternoon. Seas
3 ft.
.WED NIGHT...S wind 10 kt in the evening becoming variable less
than 10 kt. Seas 2 ft.
.THU...S wind 10 kt. Seas 2 ft.
.THU NIGHT...S wind 15 kt. Seas 3 ft.
.FRI THROUGH SAT...N wind 15 kt. Seas 3 ft.
.SUN...N wind 10 kt. Seas 2 ft.

$$

PKZ125-181200-
Prince William Sound-
314 PM AKDT Tue Aug 17 2021

.TONIGHT...NE wind 20 kt. Seas 3 ft.
.WED...NW wind 10 kt. Seas 2 ft.
.WED NIGHT...Variable wind less than 10 kt. Seas 2 ft. Patchy fog.
.THU AND THU NIGHT...SE wind 10 kt. Seas 2 ft.
.FRI THROUGH SAT...NW wind 15 kt. Seas 3 ft.
.SUN...NE wind 10 kt. Seas 2 ft.

$$

PKZ126-181200-
Port Valdez-
314 PM AKDT Tue Aug 17 2021

.TONIGHT...Variable wind less than 10 kt becoming NE 10 kt after
midnight. Seas 2 ft. Patchy fog.
.WED...NE wind 10 kt in the morning becoming variable less than
10 kt. Seas 2 ft. Patchy fog.
.WED NIGHT...Variable wind less than 10 kt. Seas 2 ft.
.THU...Variable wind less than 10 kt. Seas 2 ft.
.THU NIGHT...W wind 10 kt. Seas 2 ft.
.FRI...NE wind 10 kt. Seas 2 ft.
.SAT...Variable wind less than 10 kt. Seas 2 ft.
.SUN...Variable wind less than 10 kt. Seas 2 ft.

$$

PKZ127-181200-
Valdez Narrows-
314 PM AKDT Tue Aug 17 2021

.TONIGHT...N wind 15 kt diminishing to 10 kt after midnight. Seas
3 ft.
.WED...N wind 10 kt becoming E in the afternoon. Seas 2 ft.
.WED NIGHT...SW wind 10 kt becoming N after midnight. Seas 2 ft.
.THU...NE wind 10 kt. Seas 2 ft.
.THU NIGHT...SW wind 10 kt. Seas 2 ft.
.FRI THROUGH SUN...NE wind 15 kt. Seas 3 ft.

$$

PKZ128-181200-
Valdez Arm-
314 PM AKDT Tue Aug 17 2021

.TONIGHT...NE wind 10 kt. Seas 2 ft.
.WED...NE wind 10 kt becoming NW in the afternoon. Seas 2 ft.
.WED NIGHT...Variable wind less than 10 kt. Seas 2 ft.
.THU...Variable wind less than 10 kt. Seas 2 ft.
.THU NIGHT...NE wind 10 kt. Seas 2 ft.
.FRI THROUGH SUN...NE wind 10 kt. Seas 2 ft.

$$

PKZ129-181200-
Passage Canal-
314 PM AKDT Tue Aug 17 2021

.TONIGHT...Variable wind less than 10 kt in the evening becoming W 
10 kt, then increasing to 20 kt after midnight. Seas 2 ft.
.WED...W wind 20 kt. Seas 2 ft.
.WED NIGHT...Variable wind less than 10 kt becoming E 10 kt after
midnight. Seas 2 ft.
.THU AND THU NIGHT...E wind 10 kt. Seas 2 ft.
.FRI...W wind 10 kt. Seas 2 ft.
.SAT THROUGH SUN...E wind 10 kt. Seas 2 ft.

$$

PKZ130-181200-
West of Barren Islands including Kamishak Bay-
314 PM AKDT Tue Aug 17 2021

.TONIGHT...Variable wind 10 kt. Seas 2 ft.
.WED...W wind 15 kt. Seas 3 ft.
.WED NIGHT...Variable wind 10 kt. Seas 2 ft. Patchy fog.
.THU...SW wind 15 kt. Seas 3 ft.
.THU NIGHT...SW wind 30 kt. Seas 8 ft.
.FRI...W wind 30 kt. Seas 9 ft.
.SAT...W wind 20 kt. Seas 5 ft.
.SUN...E wind 20 kt. Seas 5 ft.

$$

PKZ131-181200-
Barren Islands East-
314 PM AKDT Tue Aug 17 2021

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

$$

PKZ132-181200-
Marmot Island to Sitkinak-
314 PM AKDT Tue Aug 17 2021

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

$$

PKZ136-181200-
Chiniak Bay-
314 PM AKDT Tue Aug 17 2021

.TONIGHT...Variable wind less than 10 kt. Seas 2 ft.
.WED...Variable wind less than 10 kt. Seas 2 ft.
.WED NIGHT...Variable wind less than 10 kt. Seas 2 ft.
.THU...Variable wind less than 10 kt. Seas 3 ft.
.THU NIGHT...SW wind 20 kt. Seas 2 ft.
.FRI...W wind 20 kt. Seas 2 ft.
.SAT...SW wind 10 kt. Seas 2 ft.
.SUN...S wind 10 kt. Seas 1 ft.

$$

PKZ137-181200-
Marmot Bay-
314 PM AKDT Tue Aug 17 2021

.TONIGHT...Variable wind less than 10 kt. Seas 2 ft.
.WED...W wind 10 kt. Seas 2 ft.
.WED NIGHT...Variable wind less than 10 kt becoming SW 10 kt after
midnight. Seas 2 ft.
.THU...W wind 10 kt. Seas 2 ft.
.THU NIGHT...W wind 20 kt. Seas 4 ft.
.FRI...W wind 20 kt. Seas 4 ft.
.SAT...W wind 10 kt. Seas 2 ft.
.SUN...SE wind 10 kt. Seas 3 ft.

$$

PKZ138-181200-
Shelikof Strait-
314 PM AKDT Tue Aug 17 2021

.TONIGHT...Northeast wind 10 kt in the evening becoming variable 10 
kt. Seas 3 ft.
.WED...Variable wind 10 kt. Seas 3 ft.
.WED NIGHT...SW wind 15 kt. Seas 3 ft.
.THU AND THU NIGHT...SW wind 25 kt. Seas 6 ft.
.FRI...W wind 20 kt. Seas 5 ft.
.SAT...W wind 15 kt. Seas 3 ft.
.SUN...SE wind 15 kt. Seas 3 ft.

$$

PKZ139-181200-
Cook Inlet Kalgin Island to Point Bede-
314 PM AKDT Tue Aug 17 2021

.TONIGHT...North wind 10 kt in the evening becoming variable wind 
less than 10 kt. Seas 2 ft.
.WED...Variable wind less than 10 kt. Seas 1 ft.
.WED NIGHT...S wind 10 kt increasing to 15 kt after midnight. Seas
3 ft. Patchy fog.
.THU AND THU NIGHT...SW wind 25 kt. Seas 7 ft.
.FRI...W wind 25 kt. Seas 6 ft.
.SAT...N wind 15 kt. Seas 3 ft.
.SUN...NE wind 15 kt. Seas 3 ft.

$$

PKZ140-181200-
Cook Inlet North of Kalgin Island-
314 PM AKDT Tue Aug 17 2021

.TONIGHT...NE wind 10 kt in the evening becoming variable less
than 10 kt. Seas 1 ft.
.WED...Variable wind less than 10 kt. Seas 1 ft.
.WED NIGHT...SW wind 10 kt. Seas 2 ft. Patchy fog.
.THU AND THU NIGHT...SW wind 25 kt. Seas 6 ft.
.FRI...W wind 15 kt. Seas 4 ft.
.SAT...NW wind 10 kt. Seas 2 ft.
.SUN...N wind 15 kt. Seas 3 ft.

$$

PKZ141-181200-
Kachemak Bay-
314 PM AKDT Tue Aug 17 2021

.TONIGHT...Variable wind less than 10 kt. Seas 2 ft. Patchy fog.
.WED...Variable wind less than 10 kt. Seas 2 ft. Patchy fog.
.WED NIGHT...S wind 10 kt. Seas 2 ft. Patchy fog.
.THU...S wind 10 kt. Seas 2 ft.
.THU NIGHT...S wind 20 kt. Seas 6 ft.
.FRI...W wind 20 kt. Seas 6 ft.
.SAT...N wind 10 kt. Seas 2 ft.
.SUN...E wind 10 kt. Seas 2 ft.

$$

The office that day

Everything else NWS Anchorage, AK issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 17, 3:45 AM AKDT	Small Craft Advisory	AFC		60 hr

Nearby

Small Craft Advisories in Alaska, 2021 Every small craft advisory in 2021

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text.