Alert archive / Alaska / Small Craft Advisories in 2017

Small Craft Advisory 540, NWS Anchorage, AK

July 18, 2017

NWS Anchorage, AK issued this small craft advisory at Jul 18, 2017, 3:52 PM AKDT. It was in force for 23 hr.

The area

The counties it named.

The facts

Issued
Jul 18, 2017, 3:52 PM AKDT (23:52 UTC)
Expired
Jul 19, 2017, 3:07 PM AKDT
In force
23 hr
Issued by
NWS Anchorage, AK

The text

As transmitted.

461 
FZAK51 PAFC 182352
CWFAER

Coastal Waters Forecast
National Weather Service Anchorage Alaska
352 PM AKDT Tue Jul 18 2017

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.

PKZ197-191300-
352 PM AKDT Tue Jul 18 2017
.SYNOPSIS FOR THE NORTH GULF COAST+KODIAK ISLAND WATERS+
COOK INLET...
A 1006 mb low 50 nm South of Kodiak City moves to 75 nm East of
Kodiak and dissipates Wed afternoon. A 1003 mb low forms 85 nm
East of Chignik and moves to 230 nm Southeast of Chignik at 1003 
mb Thu afternoon. A front over the Cook Inlet and Gulf region 
will track northward and stall along an area of high pressure 
over the northern Gulf coast Wed morning through Thu morning.

$$

PKZ119-191300-
Cape Suckling to Cape Cleare-
352 PM AKDT Tue Jul 18 2017

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

.TONIGHT...SE wind 25 kt. Seas 6 ft. Rain.
.WED...E wind 30 kt. Seas 9 ft. Rain.
.WED NIGHT...E wind 30 kt. Seas 9 ft. Rain.
.THU...E wind 25 kt. Seas 8 ft.
.THU NIGHT...E wind 20 kt. Seas 7 ft.
.FRI...E wind 20 kt. Seas 7 ft.
.SAT...E wind 15 kt. Seas 6 ft.
.SUN...Variable wind 10 kt. Seas 4 ft.

$$

PKZ120-191300-
Cape Cleare to Gore Point-
352 PM AKDT Tue Jul 18 2017

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

.TONIGHT...E wind 25 kt. Seas 7 ft. Rain.
.WED...E wind 30 kt. Seas 9 ft. Rain.
.WED NIGHT...E wind 25 kt. Seas 8 ft. Rain.
.THU...E wind 25 kt. Seas 7 ft.
.THU NIGHT...NE wind 20 kt. Seas 7 ft.
.FRI THROUGH SAT...E wind 20 kt. Seas 7 ft.
.SUN...Variable wind 10 kt. Seas 4 ft.

$$

PKZ121-191300-
Resurrection Bay-
352 PM AKDT Tue Jul 18 2017

.TONIGHT...S wind 10 kt in the evening becoming variable less than
10 kt. Seas 2 ft. Higher winds and S of Caines Head. Rain.
.WED...N wind 10 kt. Seas 2 ft. Higher winds and S of Caines Head.
Rain.
.WED NIGHT...Variable wind less than 10 kt becoming N 10 kt after
midnight. Seas 2 ft. Higher winds and S of Caines Head. Rain.
.THU...Variable wind 10 kt. Seas 2 ft.
.THU NIGHT...S wind 10 kt. Seas 2 ft.
.FRI THROUGH SAT...S wind 10 kt. Seas 2 ft.
.SUN...S wind 15 kt. Seas 3 ft.

$$

PKZ125-191300-
Prince William Sound-
352 PM AKDT Tue Jul 18 2017

...SMALL CRAFT ADVISORY WEDNESDAY NIGHT...

.TONIGHT...E wind 20 kt. Seas 4 ft. Rain.
.WED...E wind 20 kt. Seas 4 ft. Rain.
.WED NIGHT...E wind 25 kt. Seas 6 ft subsiding to 4 ft after
midnight. Rain.
.THU...NE wind 15 kt. Seas 3 ft.
.THU NIGHT...N wind 10 kt. Seas 2 ft.
.FRI...NE wind 10 kt. Seas 2 ft.
.SAT...E wind 10 kt. Seas 2 ft.
.SUN...Variable wind less than 10 kt. Seas 2 ft.

$$

PKZ126-191300-
Port Valdez-
352 PM AKDT Tue Jul 18 2017

.TONIGHT...Variable wind less than 10 kt. Seas 2 ft. Rain.
.WED...NE wind 10 kt becoming S in the afternoon. Seas 2 ft. Rain.
.WED NIGHT...W wind 10 kt in the evening becoming variable less
than 10 kt. Seas 2 ft. Rain.
.THU...SW wind 10 kt. Seas 2 ft.
.THU NIGHT...Variable wind 10 kt. Seas 2 ft.
.FRI THROUGH SUN...Variable wind less than 10 kt. Seas 2 ft.

$$

PKZ127-191300-
Valdez Narrows-
352 PM AKDT Tue Jul 18 2017

.TONIGHT...SW wind 10 kt becoming NE after midnight. Seas 2 ft.
Rain.
.WED...NE wind 15 kt becoming SE in the afternoon. Seas 3 ft.
Rain.
.WED NIGHT...SW wind 15 kt becoming NE after midnight. Seas 3 ft.
Rain.
.THU...NE wind 15 kt. Seas 3 ft.
.THU NIGHT...Variable wind 10 kt. Seas 2 ft.
.FRI...SW wind 10 kt. Seas 2 ft.
.SAT...Variable wind less than 10 kt. Seas 2 ft.
.SUN...SW wind 10 kt. Seas 2 ft.

$$

PKZ128-191300-
Valdez Arm-
352 PM AKDT Tue Jul 18 2017

.TONIGHT...N wind 10 kt. Seas 2 ft. Rain.
.WED...NE wind 10 kt becoming variable wind 15 kt in the
afternoon. Seas 3 ft. Rain.
.WED NIGHT...SW wind 10 kt becoming NE after midnight. Seas 2 ft.
Rain.
.THU...Variable wind 10 kt. Seas 2 ft.
.THU NIGHT...Variable wind 10 kt. Seas 2 ft.
.FRI...Variable wind less than 10 kt. Seas 2 ft.
.SAT...Variable wind less than 10 kt. Seas 2 ft.
.SUN...SW wind 10 kt. Seas 2 ft.

$$

PKZ129-191300-
Passage Canal-
352 PM AKDT Tue Jul 18 2017

...SMALL CRAFT ADVISORY TONIGHT AND WEDNESDAY NIGHT...

.TONIGHT...E wind 25 kt diminishing to 15 kt after midnight. Seas
3 ft. Rain.
.WED...E wind 20 kt. Seas 3 ft. Rain.
.WED NIGHT...E wind 25 kt. Seas 4 ft. Rain.
.THU...E wind 15 kt. Seas 2 ft.
.THU NIGHT...Variable wind less than 10 kt. Seas 2 ft.
.FRI THROUGH SAT...Variable wind less than 10 kt. Seas 2 ft.
.SUN...W wind 10 kt. Seas 2 ft.

$$

PKZ130-191300-
West of Barren Islands including Kamishak Bay-
352 PM AKDT Tue Jul 18 2017

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

.TONIGHT...E wind 25 kt. Seas 7 ft. Rain.
.WED...NE wind 30 kt. Seas 8 ft. Rain.
.WED NIGHT...NE wind 30 kt. Seas 8 ft. Rain.
.THU...NE wind 20 kt. Seas 6 ft.
.THU NIGHT...W wind 15 kt. Seas 3 ft.
.FRI THROUGH SUN...Variable wind 10 kt. Seas 2 ft.

$$

PKZ131-191300-
Barren Islands East-
352 PM AKDT Tue Jul 18 2017

...SMALL CRAFT ADVISORY TONIGHT...

.TONIGHT...SE wind 25 kt. Seas 6 ft. Rain.
.WED...E wind 20 kt. Seas 6 ft.
.WED NIGHT...E wind 20 kt. Seas 6 ft. Rain.
.THU AND THU NIGHT...NE wind 25 kt. Seas 7 ft.
.FRI...NE wind 25 kt. Seas 7 ft.
.SAT...E wind 20 kt. Seas 6 ft.
.SUN...Variable wind 10 kt. Seas 4 ft.

$$

PKZ132-191300-
Marmot Island to Sitkinak-
352 PM AKDT Tue Jul 18 2017

.TONIGHT...SW wind 15 kt. Seas 6 ft.
.WED...W wind 15 kt. Seas 5 ft.
.WED NIGHT...Variable wind 10 kt. Seas 5 ft. Rain showers.
.THU...E wind 20 kt. Seas 6 ft.
.THU NIGHT...NE wind 25 kt. Seas 7 ft.
.FRI...NE wind 25 kt. Seas 7 ft.
.SAT...NE wind 15 kt. Seas 6 ft.
.SUN...W wind 15 kt. Seas 4 ft.

$$

PKZ136-191300-
Chiniak Bay-
352 PM AKDT Tue Jul 18 2017

.TONIGHT...Variable wind less than 10 kt becoming W 10 kt after
midnight. Seas 2 ft.
.WED...Variable wind less than 10 kt. Seas 3 ft. Rain.
.WED NIGHT...Variable wind less than 10 kt becoming E 10 kt after
midnight. Seas 3 ft. Rain.
.THU AND THU NIGHT...NE wind 20 kt. Seas 6 ft.
.FRI...NE wind 20 kt. Seas 6 ft.
.SAT...NE wind 10 kt. Seas 3 ft.
.SUN...Variable wind less than 10 kt. Seas 2 ft.

$$

PKZ137-191300-
Marmot Bay-
352 PM AKDT Tue Jul 18 2017

.TONIGHT...W wind 10 kt. Seas 2 ft.
.WED...W wind 10 kt in the morning becoming variable less than
10 kt. Seas 2 ft. Rain.
.WED NIGHT...Variable wind less than 10 kt becoming E 10 kt after
midnight. Seas 3 ft. Rain.
.THU AND THU NIGHT...NE wind 20 kt. Seas 6 ft.
.FRI...NE wind 20 kt. Seas 6 ft.
.SAT...N wind 10 kt. Seas 3 ft.
.SUN...W wind 10 kt. Seas 2 ft.

$$

PKZ138-191300-
Shelikof Strait-
352 PM AKDT Tue Jul 18 2017

.TONIGHT...W wind 15 kt. Seas 3 ft.
.WED...W wind 15 kt. Seas 3 ft. Rain.
.WED NIGHT...Variable wind 10 kt becoming NE 20 kt after midnight.
Seas 2 ft building to 5 ft after midnight. Rain.
.THU AND THU NIGHT...NE wind 25 kt. Seas 9 ft.
.FRI...NE wind 25 kt. Seas 5 ft.
.SAT...N wind 15 kt. Seas 4 ft.
.SUN...SW wind 15 kt. Seas 3 ft.

$$

PKZ139-191300-
Cook Inlet Kalgin island to Point Bede-
352 PM AKDT Tue Jul 18 2017

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

.TONIGHT...NE wind 25 kt. Seas 7 ft. Rain.
.WED...NE wind 30 kt. Seas 9 ft. Rain.
.WED NIGHT...NE wind 30 kt. Seas 9 ft. Rain.
.THU...NE wind 20 kt. Seas 6 ft.
.THU NIGHT...W wind 10 kt. Seas 3 ft.
.FRI THROUGH SAT...S wind 10 kt. Seas 3 ft.
.SUN...SW wind 15 kt. Seas 3 ft.

$$

PKZ140-191300-
Cook Inlet North of Kalgin Island-
352 PM AKDT Tue Jul 18 2017

...SMALL CRAFT ADVISORY WEDNESDAY AND WEDNESDAY NIGHT...

.TONIGHT...NE wind 20 kt. Seas 4 ft building to 6 ft after
midnight. Rain.
.WED...NE wind 25 kt. Seas 7 ft. Rain.
.WED NIGHT...NE wind 25 kt. Seas 7 ft. Rain.
.THU...NE wind 15 kt. Seas 4 ft.
.THU NIGHT...E wind 10 kt. Seas 2 ft.
.FRI THROUGH SAT...SW wind 10 kt. Seas 3 ft.
.SUN...S wind 15 kt. Seas 3 ft.

$$

PKZ141-191300-
Kachemak Bay-
352 PM AKDT Tue Jul 18 2017

.TONIGHT...NE wind 15 kt becoming N 10 kt after midnight. Seas 2
ft. Rain.
.WED...N wind 10 kt. Seas 2 ft. Rain.
.WED NIGHT...NE wind 10 kt. Seas 2 ft. Rain.
.THU...NE wind 10 kt. Seas 2 ft.
.THU NIGHT...Variable wind less than 10 kt. Seas 2 ft.
.FRI THROUGH SAT...Variable wind less than 10 kt. Seas 2 ft.
.SUN...S wind 10 kt. Seas 2 ft.

$$
3 follow-up statements
275 
FZAK51 PAFC 191153
CWFAER

Coastal Waters Forecast
National Weather Service Anchorage Alaska
353 AM AKDT Wed Jul 19 2017

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.

PKZ197-200100-
353 AM AKDT Wed Jul 19 2017
.SYNOPSIS FOR THE NORTH GULF COAST+KODIAK ISLAND WATERS+
COOK INLET...

A 1005 mb low 35 nm East of Kodiak City moves to 38nm Northeast 
of Kodiak City and dissipates Wed afternoon. A 1004 mb low forms 
90 nm Northeast of Chignik Wed night and moves to the Northeast 
Pacific Ocean at 1001 mb Fri morning. High pressure builds over 
the North Gulf Coast and Eastern Gulf through Fri morning.

$$

PKZ119-200100-
Cape Suckling to Cape Cleare-
353 AM AKDT Wed Jul 19 2017

...SMALL CRAFT ADVISORY THROUGH THURSDAY...

.TODAY...SE wind 30 kt. Seas 9 ft. Rain.
.TONIGHT...E wind 30 kt. Seas 9 ft. Rain.
.THU...E wind 30 kt diminishing to 20 kt in the afternoon. Seas
8 ft.
.THU NIGHT...E wind 20 kt. Seas 7 ft.
.FRI THROUGH SAT...E wind 15 kt. Seas 6 ft.
.SUN...Variable wind 10 kt. Seas 4 ft.

$$

PKZ120-200100-
Cape Cleare to Gore Point-
353 AM AKDT Wed Jul 19 2017

...SMALL CRAFT ADVISORY THROUGH THURSDAY...

.TODAY...E wind 30 kt. Seas 9 ft. Rain.
.TONIGHT...E wind 25 kt. Seas 8 ft. Rain.
.THU...E wind 25 kt. Seas 7 ft. Rain.
.THU NIGHT...NE wind 20 kt. Seas 7 ft.
.FRI THROUGH SAT...E wind 15 kt. Seas 6 ft.
.SUN...SW wind 15 kt. Seas 4 ft.

$$

PKZ121-200100-
Resurrection Bay-
353 AM AKDT Wed Jul 19 2017

.TODAY...N wind 10 kt. Seas 2 ft. Higher winds and seas S of Caines
Head. Rain.
.TONIGHT...Variable wind less than 10 kt becoming N 10 kt after
midnight. Seas 2 ft. Higher winds and seas S of Caines Head. Rain.
.THU...N wind 10 kt in the morning becoming variable less than
10 kt. Seas 2 ft. Higher winds and seas S of Caines Head. Rain.
.THU NIGHT...S wind 10 kt. Seas 2 ft.
.FRI THROUGH SAT...S wind 10 kt. Seas 2 ft.
.SUN...S wind 15 kt. Seas 3 ft.

$$

PKZ125-200100-
Prince William Sound-
353 AM AKDT Wed Jul 19 2017

...SMALL CRAFT ADVISORY TODAY...

.TODAY...E wind 25 kt. Seas 4 ft. Rain.
.TONIGHT...NE wind 20 kt. Seas 3 ft. Rain.
.THU...NE wind 20 kt. Seas 4 ft subsiding to 2 ft in the
afternoon.
.THU NIGHT...N wind 10 kt. Seas 2 ft.
.FRI...Variable wind less than 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.

$$

PKZ126-200100-
Port Valdez-
353 AM AKDT Wed Jul 19 2017

.TODAY...NE wind 10 kt becoming S in the afternoon. Seas 2 ft.
Rain.
.TONIGHT...W wind 10 kt in the evening becoming variable less than
10 kt. Seas 2 ft. Rain.
.THU...Variable wind less than 10 kt becoming W 10 kt in the
afternoon. Seas 2 ft.
.THU NIGHT...Variable wind 10 kt. Seas 2 ft.
.FRI...SW wind 10 kt. Seas 2 ft.
.SAT THROUGH SUN...Variable wind less than 10 kt. Seas 2 ft.

$$

PKZ127-200100-
Valdez Narrows-
353 AM AKDT Wed Jul 19 2017

.TODAY...NE wind 15 kt becoming SW in the afternoon. Seas 3 ft.
Rain.
.TONIGHT...SW wind 15 kt becoming NE after midnight. Seas 3 ft.
Rain.
.THU...NE wind 15 kt becoming SE in the afternoon. Seas 3 ft.
.THU NIGHT...Variable wind 10 kt. Seas 2 ft.
.FRI...SW wind 15 kt. Seas 3 ft.
.SAT...Variable wind less than 10 kt. Seas 2 ft.
.SUN...SW wind 10 kt. Seas 2 ft.

$$

PKZ128-200100-
Valdez Arm-
353 AM AKDT Wed Jul 19 2017

.TODAY...NE wind 10 kt becoming Variable wind 15 kt in the
afternoon. Seas 3 ft. Rain.
.TONIGHT...SW wind 10 kt becoming NE after midnight. Seas 2 ft.
Rain.
.THU...Variable wind less than 10 kt becoming SW wind 10 kt in the
afternoon. Seas 2 ft.
.THU NIGHT...Variable wind 10 kt. Seas 2 ft.
.FRI...SW wind 10 kt. Seas 2 ft.
.SAT...Variable wind less than 10 kt. Seas 2 ft.
.SUN...SW wind 10 kt. Seas 2 ft.

$$

PKZ129-200100-
Passage Canal-
353 AM AKDT Wed Jul 19 2017

...SMALL CRAFT ADVISORY TONIGHT...

.TODAY...E wind 20 kt. Seas 3 ft. Rain.
.TONIGHT...E wind 25 kt. Seas 4 ft. Rain.
.THU...E wind 15 kt in the morning becoming variable less than
10 kt. Seas 2 ft. Rain.
.THU NIGHT...Variable wind less than 10 kt. Seas 2 ft.
.FRI THROUGH SAT...Variable wind less than 10 kt. Seas 2 ft.
.SUN...W wind 10 kt. Seas 2 ft.

$$

PKZ130-200100-
West of Barren Islands including Kamishak Bay-
353 AM AKDT Wed Jul 19 2017

...SMALL CRAFT ADVISORY THROUGH THURSDAY...

.TODAY...NE wind 30 kt. Seas 8 ft. Rain.
.TONIGHT...NE wind 30 kt. Seas 8 ft. Rain.
.THU...NE wind 25 kt. Seas 6 ft. Rain.
.THU NIGHT...E wind 20 kt. Seas 3 ft.
.FRI THROUGH SAT...Variable wind 10 kt. Seas 3 ft.
.SUN...W wind 15 kt. Seas 3 ft.

$$

PKZ131-200100-
Barren Islands East-
353 AM AKDT Wed Jul 19 2017

...SMALL CRAFT ADVISORY THROUGH THURSDAY...

.TODAY...E wind 25 kt. Seas 6 ft.
.TONIGHT...E wind 25 kt. Seas 6 ft. Rain.
.THU...E wind 25 kt. Seas 7 ft. Rain.
.THU NIGHT...NE wind 25 kt. Seas 7 ft.
.FRI...NE wind 20 kt. Seas 7 ft.
.SAT...E wind 15 kt. Seas 6 ft.
.SUN...SW wind 15 kt. Seas 4 ft.

$$

PKZ132-200100-
Marmot Island to Sitkinak-
353 AM AKDT Wed Jul 19 2017

.TODAY...W wind 20 kt. Seas 5 ft.
.TONIGHT...Variable wind 10 kt. Seas 5 ft.
.THU...NE wind 20 kt. Seas 6 ft. Rain.
.THU NIGHT...NE wind 25 kt. Seas 7 ft.
.FRI...NE wind 25 kt. Seas 7 ft.
.SAT...N wind 15 kt. Seas 6 ft.
.SUN...W wind 15 kt. Seas 4 ft.

$$

PKZ136-200100-
Chiniak Bay-
353 AM AKDT Wed Jul 19 2017

.TODAY...W wind 10 kt in the morning becoming variable less than
10 kt. Seas 3 ft. Rain.
.TONIGHT...Variable wind less than 10 kt. Seas 3 ft. Rain.
.THU...NE wind 15 kt. Seas 4 ft. Rain.
.THU NIGHT...NE wind 20 kt. Seas 6 ft.
.FRI...NE wind 15 kt. Seas 4 ft.
.SAT...Variable wind less than 10 kt. Seas 3 ft.
.SUN...W wind 10 kt. Seas 2 ft.

$$

PKZ137-200100-
Marmot Bay-
353 AM AKDT Wed Jul 19 2017

.TODAY...W wind 15 kt diminishing to 10 kt in the afternoon. Seas
3 ft. Rain.
.TONIGHT...Variable wind less than 10 kt. Seas 3 ft. Rain.
.THU...NE wind 15 kt. Seas 4 ft. Rain.
.THU NIGHT...NE wind 20 kt. Seas 7 ft.
.FRI...E wind 15 kt. Seas 4 ft.
.SAT...N wind 10 kt. Seas 3 ft.
.SUN...W wind 10 kt. Seas 2 ft.

$$

PKZ138-200100-
Shelikof Strait-
353 AM AKDT Wed Jul 19 2017

...SMALL CRAFT ADVISORY THURSDAY...

.TODAY...W wind 15 kt. Seas 3 ft. Rain.
.TONIGHT...Variable wind 10 kt becoming NE 20 kt after midnight.
Seas 2 ft building to 5 ft after midnight. Rain.
.THU...NE wind 25 kt. Seas 8 ft. Rain.
.THU NIGHT...NE wind 25 kt. Seas 9 ft.
.FRI...NE wind 20 kt. Seas 6 ft.
.SAT...Variable wind 10 kt. Seas 3 ft.
.SUN...W wind 15 kt. Seas 3 ft.

$$

PKZ139-200100-
Cook Inlet Kalgin island to Point Bede-
353 AM AKDT Wed Jul 19 2017

...SMALL CRAFT ADVISORY THROUGH THURSDAY...

.TODAY...NE wind 30 kt. Seas 9 ft. Rain.
.TONIGHT...NE wind 30 kt. Seas 9 ft. Rain.
.THU...N wind 30 kt diminishing to 20 kt in the afternoon. Seas 6
ft subsiding to 4 ft in the afternoon.
.THU NIGHT...W wind 10 kt. Seas 3 ft.
.FRI...S wind 15 kt. Seas 3 ft.
.SAT THROUGH SUN...SW wind 10 kt. Seas 3 ft.

$$

PKZ140-200100-
Cook Inlet North of Kalgin Island-
353 AM AKDT Wed Jul 19 2017

...SMALL CRAFT ADVISORY TODAY...

.TODAY...NE wind 30 kt. Seas 7 ft. Rain.
.TONIGHT...NE wind 20 kt. Seas 7 ft.
.THU...NE wind 20 kt. Seas 4 ft.
.THU NIGHT...E wind 10 kt. Seas 2 ft.
.FRI THROUGH SAT...S wind 15 kt. Seas 3 ft.
.SUN...S wind 10 kt. Seas 3 ft.

$$

PKZ141-200100-
Kachemak Bay-
353 AM AKDT Wed Jul 19 2017

.TODAY...N wind 10 kt increasing to 15 kt in the afternoon. Seas
2 ft. Rain.
.TONIGHT...NE wind 15 kt. Seas 2 ft. Rain.
.THU...NE wind 15 kt diminishing to 10 kt in the afternoon. Seas
2 ft.
.THU NIGHT...Variable wind less than 10 kt. Seas 2 ft.
.FRI...SW wind 10 kt. Seas 2 ft.
.SAT...Variable wind less than 10 kt. Seas 2 ft.
.SUN...SW wind 10 kt. Seas 2 ft.

$$
760 
FZAK51 PAFC 191200 CCA
CWFAER

Coastal Waters Forecast...CORRECTED
National Weather Service Anchorage Alaska
400 AM AKDT Wed Jul 19 2017

Corrected zone 127

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.

PKZ197-200100-
400 AM AKDT Wed Jul 19 2017
.SYNOPSIS FOR THE NORTH GULF COAST+KODIAK ISLAND WATERS+
COOK INLET...

A 1005 mb low 35 nm East of Kodiak City moves to 38nm Northeast 
of Kodiak City and dissipates Wed afternoon. A 1004 mb low forms 
90 nm Northeast of Chignik Wed night and moves to the Northeast 
Pacific Ocean at 1001 mb Fri morning. High pressure builds over 
the North Gulf Coast and Eastern Gulf through Fri morning.

$$

PKZ119-200100-
Cape Suckling to Cape Cleare-
400 AM AKDT Wed Jul 19 2017

...SMALL CRAFT ADVISORY THROUGH THURSDAY...

.TODAY...SE wind 30 kt. Seas 9 ft. Rain.
.TONIGHT...E wind 30 kt. Seas 9 ft. Rain.
.THU...E wind 30 kt diminishing to 20 kt in the afternoon. Seas
8 ft.
.THU NIGHT...E wind 20 kt. Seas 7 ft.
.FRI THROUGH SAT...E wind 15 kt. Seas 6 ft.
.SUN...Variable wind 10 kt. Seas 4 ft.

$$

PKZ120-200100-
Cape Cleare to Gore Point-
400 AM AKDT Wed Jul 19 2017

...SMALL CRAFT ADVISORY THROUGH THURSDAY...

.TODAY...E wind 30 kt. Seas 9 ft. Rain.
.TONIGHT...E wind 25 kt. Seas 8 ft. Rain.
.THU...E wind 25 kt. Seas 7 ft. Rain.
.THU NIGHT...NE wind 20 kt. Seas 7 ft.
.FRI THROUGH SAT...E wind 15 kt. Seas 6 ft.
.SUN...SW wind 15 kt. Seas 4 ft.

$$

PKZ121-200100-
Resurrection Bay-
400 AM AKDT Wed Jul 19 2017

.TODAY...N wind 10 kt. Seas 2 ft. Higher winds and seas S of Caines
Head. Rain.
.TONIGHT...Variable wind less than 10 kt becoming N 10 kt after
midnight. Seas 2 ft. Higher winds and seas S of Caines Head. Rain.
.THU...N wind 10 kt in the morning becoming variable less than
10 kt. Seas 2 ft. Higher winds and seas S of Caines Head. Rain.
.THU NIGHT...S wind 10 kt. Seas 2 ft.
.FRI THROUGH SAT...S wind 10 kt. Seas 2 ft.
.SUN...S wind 15 kt. Seas 3 ft.

$$

PKZ125-200100-
Prince William Sound-
400 AM AKDT Wed Jul 19 2017

...SMALL CRAFT ADVISORY TODAY...

.TODAY...E wind 25 kt. Seas 4 ft. Rain.
.TONIGHT...NE wind 20 kt. Seas 3 ft. Rain.
.THU...NE wind 20 kt. Seas 4 ft subsiding to 2 ft in the
afternoon.
.THU NIGHT...N wind 10 kt. Seas 2 ft.
.FRI...Variable wind less than 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.

$$

PKZ126-200100-
Port Valdez-
400 AM AKDT Wed Jul 19 2017

.TODAY...NE wind 10 kt becoming S in the afternoon. Seas 2 ft.
Rain.
.TONIGHT...W wind 10 kt in the evening becoming variable less than
10 kt. Seas 2 ft. Rain.
.THU...Variable wind less than 10 kt becoming W 10 kt in the
afternoon. Seas 2 ft.
.THU NIGHT...Variable wind 10 kt. Seas 2 ft.
.FRI...SW wind 10 kt. Seas 2 ft.
.SAT THROUGH SUN...Variable wind less than 10 kt. Seas 2 ft.

$$

PKZ127-200100-
Valdez Narrows-
400 AM AKDT Wed Jul 19 2017

.TODAY...NE wind 15 kt becoming SW in the afternoon. Seas 3 ft.
Rain.
.TONIGHT...SW wind 15 kt becoming NE after midnight. Seas 3 ft.
Rain.
.THU...NE wind 15 kt becoming SE in the afternoon. Seas 3 ft.
.THU NIGHT...Variable wind 10 kt. Seas 2 ft.
.FRI...SW wind 15 kt. Seas 3 ft.
.SAT...Variable wind less than 10 kt. Seas 2 ft.
.SUN...SW wind 10 kt. Seas 2 ft.

$$

PKZ128-200100-
Valdez Arm-
400 AM AKDT Wed Jul 19 2017

.TODAY...NE wind 10 kt becoming Variable wind 15 kt in the
afternoon. Seas 3 ft. Rain.
.TONIGHT...SW wind 10 kt becoming NE after midnight. Seas 2 ft.
Rain.
.THU...Variable wind less than 10 kt becoming SW wind 10 kt in the
afternoon. Seas 2 ft.
.THU NIGHT...Variable wind 10 kt. Seas 2 ft.
.FRI...SW wind 10 kt. Seas 2 ft.
.SAT...Variable wind less than 10 kt. Seas 2 ft.
.SUN...SW wind 10 kt. Seas 2 ft.

$$

PKZ129-200100-
Passage Canal-
400 AM AKDT Wed Jul 19 2017

...SMALL CRAFT ADVISORY TONIGHT...

.TODAY...E wind 20 kt. Seas 3 ft. Rain.
.TONIGHT...E wind 25 kt. Seas 4 ft. Rain.
.THU...E wind 15 kt in the morning becoming variable less than
10 kt. Seas 2 ft. Rain.
.THU NIGHT...Variable wind less than 10 kt. Seas 2 ft.
.FRI THROUGH SAT...Variable wind less than 10 kt. Seas 2 ft.
.SUN...W wind 10 kt. Seas 2 ft.

$$

PKZ130-200100-
West of Barren Islands including Kamishak Bay-
400 AM AKDT Wed Jul 19 2017

...SMALL CRAFT ADVISORY THROUGH THURSDAY...

.TODAY...NE wind 30 kt. Seas 8 ft. Rain.
.TONIGHT...NE wind 30 kt. Seas 8 ft. Rain.
.THU...NE wind 25 kt. Seas 6 ft. Rain.
.THU NIGHT...E wind 20 kt. Seas 3 ft.
.FRI THROUGH SAT...Variable wind 10 kt. Seas 3 ft.
.SUN...W wind 15 kt. Seas 3 ft.

$$

PKZ131-200100-
Barren Islands East-
400 AM AKDT Wed Jul 19 2017

...SMALL CRAFT ADVISORY THROUGH THURSDAY...

.TODAY...E wind 25 kt. Seas 6 ft.
.TONIGHT...E wind 25 kt. Seas 6 ft. Rain.
.THU...E wind 25 kt. Seas 7 ft. Rain.
.THU NIGHT...NE wind 25 kt. Seas 7 ft.
.FRI...NE wind 20 kt. Seas 7 ft.
.SAT...E wind 15 kt. Seas 6 ft.
.SUN...SW wind 15 kt. Seas 4 ft.

$$

PKZ132-200100-
Marmot Island to Sitkinak-
400 AM AKDT Wed Jul 19 2017

.TODAY...W wind 20 kt. Seas 5 ft.
.TONIGHT...Variable wind 10 kt. Seas 5 ft.
.THU...NE wind 20 kt. Seas 6 ft. Rain.
.THU NIGHT...NE wind 25 kt. Seas 7 ft.
.FRI...NE wind 25 kt. Seas 7 ft.
.SAT...N wind 15 kt. Seas 6 ft.
.SUN...W wind 15 kt. Seas 4 ft.

$$

PKZ136-200100-
Chiniak Bay-
400 AM AKDT Wed Jul 19 2017

.TODAY...W wind 10 kt in the morning becoming variable less than
10 kt. Seas 3 ft. Rain.
.TONIGHT...Variable wind less than 10 kt. Seas 3 ft. Rain.
.THU...NE wind 15 kt. Seas 4 ft. Rain.
.THU NIGHT...NE wind 20 kt. Seas 6 ft.
.FRI...NE wind 15 kt. Seas 4 ft.
.SAT...Variable wind less than 10 kt. Seas 3 ft.
.SUN...W wind 10 kt. Seas 2 ft.

$$

PKZ137-200100-
Marmot Bay-
400 AM AKDT Wed Jul 19 2017

.TODAY...W wind 15 kt diminishing to 10 kt in the afternoon. Seas
3 ft. Rain.
.TONIGHT...Variable wind less than 10 kt. Seas 3 ft. Rain.
.THU...NE wind 15 kt. Seas 4 ft. Rain.
.THU NIGHT...NE wind 20 kt. Seas 7 ft.
.FRI...E wind 15 kt. Seas 4 ft.
.SAT...N wind 10 kt. Seas 3 ft.
.SUN...W wind 10 kt. Seas 2 ft.

$$

PKZ138-200100-
Shelikof Strait-
400 AM AKDT Wed Jul 19 2017

...SMALL CRAFT ADVISORY THURSDAY...

.TODAY...W wind 15 kt. Seas 3 ft. Rain.
.TONIGHT...Variable wind 10 kt becoming NE 20 kt after midnight.
Seas 2 ft building to 5 ft after midnight. Rain.
.THU...NE wind 25 kt. Seas 8 ft. Rain.
.THU NIGHT...NE wind 25 kt. Seas 9 ft.
.FRI...NE wind 20 kt. Seas 6 ft.
.SAT...Variable wind 10 kt. Seas 3 ft.
.SUN...W wind 15 kt. Seas 3 ft.

$$

PKZ139-200100-
Cook Inlet Kalgin island to Point Bede-
400 AM AKDT Wed Jul 19 2017

...SMALL CRAFT ADVISORY THROUGH THURSDAY...

.TODAY...NE wind 30 kt. Seas 9 ft. Rain.
.TONIGHT...NE wind 30 kt. Seas 9 ft. Rain.
.THU...N wind 30 kt diminishing to 20 kt in the afternoon. Seas 6
ft subsiding to 4 ft in the afternoon.
.THU NIGHT...W wind 10 kt. Seas 3 ft.
.FRI...S wind 15 kt. Seas 3 ft.
.SAT THROUGH SUN...SW wind 10 kt. Seas 3 ft.

$$

PKZ140-200100-
Cook Inlet North of Kalgin Island-
400 AM AKDT Wed Jul 19 2017

...SMALL CRAFT ADVISORY TODAY...

.TODAY...NE wind 30 kt. Seas 7 ft. Rain.
.TONIGHT...NE wind 20 kt. Seas 7 ft.
.THU...NE wind 20 kt. Seas 4 ft.
.THU NIGHT...E wind 10 kt. Seas 2 ft.
.FRI THROUGH SAT...S wind 15 kt. Seas 3 ft.
.SUN...S wind 10 kt. Seas 3 ft.

$$

PKZ141-200100-
Kachemak Bay-
400 AM AKDT Wed Jul 19 2017

.TODAY...N wind 10 kt increasing to 15 kt in the afternoon. Seas
2 ft. Rain.
.TONIGHT...NE wind 15 kt. Seas 2 ft. Rain.
.THU...NE wind 15 kt diminishing to 10 kt in the afternoon. Seas
2 ft.
.THU NIGHT...Variable wind less than 10 kt. Seas 2 ft.
.FRI...SW wind 10 kt. Seas 2 ft.
.SAT...Variable wind less than 10 kt. Seas 2 ft.
.SUN...SW wind 10 kt. Seas 2 ft.

$$
235 
FZAK51 PAFC 192307
CWFAER

Coastal Waters Forecast
National Weather Service Anchorage Alaska
307 PM AKDT Wed Jul 19 2017

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.

PKZ197-201215-
307 PM AKDT Wed Jul 19 2017
.SYNOPSIS FOR THE NORTH GULF COAST+KODIAK ISLAND WATERS+
COOK INLET...
A 1003 mb low 50 nm north of Kodiak merges with a 1001 mb 50 nm 
northeast of Sitkinak this evening then moves to 450 nm southwest of
Klawock at 999 mb by Fri afternoon. The associated front over the 
north Gulf Coast will begin to weaken and track south through the 
central Gulf Thu afternoon, then into the southeast Gulf by Fri.

$$

PKZ119-201215-
Cape Suckling to Cape Cleare-
307 PM AKDT Wed Jul 19 2017

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

.TONIGHT...E wind 25 kt. Seas 9 ft. Rain.
.THU...E wind 25 kt. Seas 9 ft.
.THU NIGHT...E wind 20 kt. Seas 8 ft.
.FRI...E wind 15 kt. Seas 7 ft.
.FRI NIGHT...Variable wind 10 kt. Seas 6 ft.
.SAT...W wind 15 kt. Seas 6 ft.
.SUN THROUGH MON...Variable wind 10 kt. Seas 4 ft.

$$

PKZ120-201215-
Cape Cleare to Gore Point-
307 PM AKDT Wed Jul 19 2017

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

.TONIGHT...E wind 25 kt. Seas 8 ft. Rain.
.THU...E wind 25 kt. Seas 8 ft. Rain.
.THU NIGHT...NE wind 25 kt. Seas 8 ft.
.FRI...NE wind 20 kt. Seas 7 ft.
.FRI NIGHT...NW wind 15 kt. Seas 6 ft.
.SAT THROUGH MON...SW wind 15 kt. Seas 5 ft.

$$

PKZ121-201215-
Resurrection Bay-
307 PM AKDT Wed Jul 19 2017

.TONIGHT...Variable wind less than 10 kt. Seas 2 ft. Higher winds
and seas south of Caines Head. Rain.
.THU...N wind 10 kt becoming S in the afternoon. Seas 2 ft. Higher
winds and seas south of Caines Head. Rain.
.THU NIGHT...S wind 10 kt in the evening becoming variable less than
10 kt. Seas 2 ft. Higher winds and seas south of Caines Head. Rain.
.FRI...S wind 10 kt. Seas 2 ft.
.FRI NIGHT...Variable wind 10 kt. Seas 2 ft.
.SAT...S wind 10 kt. Seas 2 ft.
.SUN THROUGH MON...S wind 15 kt. Seas 3 ft.

$$

PKZ125-201215-
Prince William Sound-
307 PM AKDT Wed Jul 19 2017

.TONIGHT...NE wind 20 kt. Seas 4 ft. Rain.
.THU...NE wind 20 kt. Seas 4 ft subsiding to 2 ft in the afternoon.
.THU NIGHT...N wind 10 kt. Seas 2 ft.
.FRI...Variable wind less than 10 kt. Seas 2 ft.
.FRI NIGHT...Variable wind less than 10 kt. Seas 2 ft.
.SAT THROUGH SUN...Variable wind less than 10 kt. Seas 2 ft.
.MON...S wind 10 kt. Seas 2 ft.

$$

PKZ126-201215-
Port Valdez-
307 PM AKDT Wed Jul 19 2017

.TONIGHT...Variable wind 10 kt. Seas 2 ft. Rain.
.THU...Variable wind less than 10 kt becoming W 10 kt in the
afternoon. Seas 2 ft.
.THU NIGHT...W wind 10 kt in the evening becoming variable less
than 10 kt. Seas 2 ft.
.FRI AND FRI NIGHT...SW wind 10 kt. Seas 2 ft.
.SAT THROUGH SUN...Variable wind less than 10 kt. Seas 2 ft.
.MON...Variable wind less than 10 kt. Seas 2 ft.

$$

PKZ127-201215-
Valdez Narrows-
307 PM AKDT Wed Jul 19 2017

.TONIGHT...Variable wind 10 kt. Seas 3 ft. Rain.
.THU...NE wind 15 kt becoming SE in the afternoon. Seas 3 ft.
.THU NIGHT...SW wind 10 kt becoming NE after midnight. Seas 2 ft.
.FRI AND FRI NIGHT...SW wind 15 kt. Seas 3 ft.
.SAT...Variable wind less than 10 kt. Seas 2 ft.
.SUN THROUGH MON...Variable wind 10 kt. Seas 2 ft.

$$

PKZ128-201215-
Valdez Arm-
307 PM AKDT Wed Jul 19 2017

.TONIGHT...SW wind 10 kt becoming NE after midnight. Seas 2 ft.
Rain.
.THU...Variable wind less than 10 kt becoming SW wind 10 kt in the
afternoon. Seas 2 ft.
.THU NIGHT...SW wind 10 kt in the evening becoming variable less
than 10 kt. Seas 2 ft.
.FRI AND FRI NIGHT...SW wind 10 kt. Seas 2 ft.
.SAT...Variable wind less than 10 kt. Seas 2 ft.
.SUN THROUGH MON...Variable wind 10 kt. Seas 2 ft.

$$

PKZ129-201215-
Passage Canal-
307 PM AKDT Wed Jul 19 2017

.TONIGHT...E wind 20 kt. Seas 3 ft. Rain.
.THU...E wind 15 kt. Seas 2 ft. Rain.
.THU NIGHT...E wind 15 kt diminishing to 10 kt after midnight.
Seas 2 ft.
.FRI AND FRI NIGHT...Variable wind less than 10 kt. Seas 2 ft.
.SAT...Variable wind less than 10 kt. Seas 2 ft.
.SUN THROUGH MON...W wind 10 kt. Seas 2 ft.

$$

PKZ130-201215-
West of Barren Islands including Kamishak Bay-
307 PM AKDT Wed Jul 19 2017

...SMALL CRAFT ADVISORY THROUGH THURSDAY...

.TONIGHT...NE wind 30 kt. Seas 9 ft. Rain.
.THU...NE wind 30 kt diminishing to 20 kt in the afternoon. Seas
9 ft. Rain.
.THU NIGHT...E wind 20 kt becoming W 15 kt after midnight. Seas
4 ft.
.FRI AND FRI NIGHT...Variable wind 10 kt. Seas 3 ft.
.SAT...Variable wind 10 kt. Seas 2 ft.
.SUN THROUGH MON...W wind 15 kt. Seas 4 ft.

$$

PKZ131-201215-
Barren Islands East-
307 PM AKDT Wed Jul 19 2017

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

.TONIGHT...E wind 25 kt. Seas 7 ft. Rain.
.THU...E wind 25 kt. Seas 8 ft. Rain.
.THU NIGHT...NE wind 25 kt. Seas 9 ft.
.FRI...NE wind 20 kt. Seas 8 ft.
.FRI NIGHT...NE wind 15 kt. Seas 7 ft.
.SAT THROUGH MON...W wind 15 kt. Seas 5 ft.

$$

PKZ132-201215-
Marmot Island to Sitkinak-
307 PM AKDT Wed Jul 19 2017

...SMALL CRAFT ADVISORY THURSDAY NIGHT...

.TONIGHT...Variable wind 10 kt. Seas 5 ft.
.THU...NE wind 20 kt. Seas 6 ft. Rain.
.THU NIGHT...NE wind 25 kt. Seas 9 ft. Rain.
.FRI...NE wind 25 kt. Seas 9 ft.
.FRI NIGHT...NE wind 20 kt. Seas 8 ft.
.SAT...Variable wind 10 kt. Seas 6 ft.
.SUN...W wind 15 kt. Seas 4 ft.
.MON...W wind 20 kt. Seas 5 ft.

$$

PKZ136-201215-
Chiniak Bay-
307 PM AKDT Wed Jul 19 2017

.TONIGHT...Variable wind less than 10 kt. Seas 3 ft. Rain.
.THU...NE wind 20 kt. Seas 6 ft. Rain.
.THU NIGHT...NE wind 20 kt. Seas 6 ft. Rain.
.FRI...NE wind 20 kt. Seas 5 ft.
.FRI NIGHT...N wind 10 kt. Seas 3 ft.
.SAT...S wind 10 kt. Seas 3 ft.
.SUN THROUGH MON...W wind 10 kt. Seas 2 ft.

$$

PKZ137-201215-
Marmot Bay-
307 PM AKDT Wed Jul 19 2017

.TONIGHT...Variable wind less than 10 kt becoming E 10 kt after
midnight. Seas 3 ft. Rain.
.THU...NE wind 20 kt. Seas 3 ft building to 5 ft in the afternoon.
Rain.
.THU NIGHT...NE wind 20 kt. Seas 7 ft. Rain.
.FRI...NE wind 15 kt. Seas 4 ft.
.FRI NIGHT...SE wind 10 kt. Seas 3 ft.
.SAT...Variable wind less than 10 kt. Seas 3 ft.
.SUN THROUGH MON...W wind 10 kt. Seas 2 ft.

$$

PKZ138-201215-
Shelikof Strait-
307 PM AKDT Wed Jul 19 2017

...SMALL CRAFT ADVISORY THURSDAY AND THURSDAY NIGHT...

.TONIGHT...Variable wind 10 kt becoming NE 20 kt after midnight.
Seas 2 ft building to 5 ft after midnight. Rain.
.THU...NE wind 25 kt. Seas 9 ft. Rain.
.THU NIGHT...NE wind 30 kt. Seas 9 ft.
.FRI...NE wind 20 kt. Seas 6 ft.
.FRI NIGHT...NE wind 15 kt. Seas 3 ft.
.SAT...Variable wind 10 kt. Seas 3 ft.
.SUN THROUGH MON...W wind 15 kt. Seas 4 ft.

$$

PKZ139-201215-
Cook Inlet Kalgin island to Point Bede-
307 PM AKDT Wed Jul 19 2017

...SMALL CRAFT ADVISORY THROUGH THURSDAY...

.TONIGHT...NE wind 30 kt. Seas 9 ft. Rain.
.THU...N wind 30 kt diminishing to 20 kt in the afternoon. Seas
8 ft.
.THU NIGHT...N wind 10 kt becoming W after midnight. Seas 2 ft.
.FRI AND FRI NIGHT...S wind 15 kt. Seas 4 ft.
.SAT THROUGH MON...SW wind 10 kt. Seas 3 ft.

$$

PKZ140-201215-
Cook Inlet North of Kalgin Island-
307 PM AKDT Wed Jul 19 2017

.TONIGHT...NE wind 20 kt. Seas 6 ft.
.THU...NE wind 20 kt. Seas 5 ft.
.THU NIGHT...NE wind 10 kt in the evening becoming variable less
than 10 kt. Seas 2 ft.
.FRI...S wind 10 kt. Seas 2 ft.
.FRI NIGHT...S wind 15 kt. Seas 3 ft.
.SAT...S wind 15 kt. Seas 2 ft.
.SUN...S wind 10 kt. Seas 3 ft.
.MON...S wind 15 kt. Seas 3 ft.

$$

PKZ141-201215-
Kachemak Bay-
307 PM AKDT Wed Jul 19 2017

.TONIGHT...NE wind 15 kt. Seas 2 ft. Rain.
.THU...NE wind 15 kt diminishing to 10 kt in the afternoon. Seas
2 ft.
.THU NIGHT...Variable wind less than 10 kt. Seas 2 ft.
.FRI AND FRI NIGHT...S wind 10 kt. Seas 2 ft.
.SAT...Variable wind less than 10 kt. Seas 2 ft.
.SUN THROUGH MON...SW wind 10 kt. Seas 2 ft.

$$

What forecasters said that day

The local office's own words before this small craft advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Anchorage, AK wrote its last area forecast discussion before this small craft advisory went out at Jul 18, 5:02 AM AKDT, 10 hours 50 minutes earlier.

Area forecast discussion, Jul 18, 5:02 AM AKDT, 10 hours 50 minutes before
Southcentral and Southwest Alaska Forecast Discussion
National Weather Service Anchorage AK
502 AM AKDT Tue Jul 18 2017

.ANALYSIS AND UPPER LEVELS...
A deep upper level trough is currently digging southeast across
the Bering Sea, supported by a 120kt jetmax located just to the
north and along the Aleutian Island chain. An upper level ridge
that had been over most of mainland Alaska the past week is
weakening as it moves off to the east into Canada. A weak upper
level shortwave trough embedded within the backside of the ridge
is transiting across southcentral Alaska as it exits the region.
An elongated occluded front associated with the Bering low is
currently pushing east through SW Alaska bringing a wide band of
rain, heavy at times, from the Seward Peninsula south to Kodiak.
Strong easterly to southerly winds associated with this front have
also been observed across Bristol Bay and the AKPEN, with winds
accelerating through terrain gaps and mountain passes on the
leeward side of the Aleutian Range. Rain just out ahead of the
front is beginning to make its way north into the Kenai Peninsula
and the Anchorage Bowl.

&&

.MODEL DISCUSSION...
Models were in good agreement this morning regarding the placement
and strength of the upper level low over the Bering and its
associated surface front as it makes its way across SW AK and into
southcentral. Models begin to diverge as a surface low forms in
the Gulf of Alaska on Wednesday with disagreement regarding the
orientation of the pressure gradient and the amount of downsloping
the Anchorage Bowl and the western Kenai Peninsula will see.
Overall, a middle ground with a mix between the GFS and NAM was
the preferred solution with these areas seeing precipitation early
in the period before drying out as the flow turns more
southeasterly. More uncertainty comes later in the week regarding
the location of the surface low, with the GFS moving the system
well south of our area and the EC bringing the low center a bit
further north before eventually moving the system off to the east.

&&

.AVIATION...
PANC...Light rain is expected today as a surface front moves into
the area this morning, but VFR conditions are expected to persist
over the terminal as downsloping from southeasterly flow will
keep the low levels relatively dry. Winds will be from the
southeast out of Turnagain Arm but are not expected to be strong
at the terminal as the low level jet will bend away to the south as
it reaches Cook Inlet.

&&

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

The main weather concern over the next several days is a well-
organized front approaching from the west, which will eventually
push northward and linger along the north Gulf Coast. Radar this
morning already indicates widespread rainfall spanning much of
Southwest Alaska, which will bring increasingly wet conditions to
much of Southcentral Alaska today as it pushes northward. Ahead
of this system, southwesterly upslope winds will support
widespread light rain in the Anchorage Bowl this morning. However,
by afternoon southeasterly flow will develop which will limit
rainfall across the Anchorage Bowl, Matanuska Valley and West
Kenai Peninsula. By Wednesday, wind gusts will increase across
Prince William Sound and Turnagain Arm and continue throughout
the day. With these stronger cross barrier winds, rainfall will
continue to be possible but limited across typically downsloped
locations on Wednesday.

&&

.SHORT TERM FORECAST SOUTHWEST ALASKA (Days 1 and 2)...
The front over southwest Alaska continues to push through the area
and will exit to the east late this morning. Behind the front
lighter rain will persist as the parent low of the front tracks
south along the southwest coast. After the low makes it into the
North Pacific on Wednesday rain will diminish around the region.
However, afternoon showers will still be likely.

&&

.SHORT TERM FORECAST BERING SEA/ALEUTIANS (Days 1 and 2)...
Rain will continue for much of the next couple of days as
shortwaves move through the predominantly westerly flow.
Wednesday night ridging will build in over the western Bering
which will start to clear out some of the rain. Ridging will then
be the dominant feature over the Bering extending across the
northern Bering and into mainland Alaska.

&&

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

The models start out the long term in fairly good agreement, with
a surface low south of Kodiak and it's attendant upper level low
gradually moving south away from mainland Alaska. Thus, across the
mainland, typical summer ridging indicative of a developing
thermal trough develops. This will result in offshore flow across
Southcentral. Depending on how strong a northerly wave moving
eastward across northern Alaska gets, will determine thunderstorm
coverage. Most likely all it's energy misses the area to the
north, so any storms will likely be the typical mountain storms
that remain nearly stationary. Weak ridging persists away from the
coast, which should help make for a period of tranquil weather due
to a slowly changing pattern that keeps the active weather away
from the area right through the weekend. Temperature-wise, most
of the warmest air looks to remain over the Bering, so seasonable
conditions are likely with gradually increasing threats for
mountain storms expected through the weekend.

&&

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

&&

SYNOPSIS AND MODEL DISCUSSION...KWV
SOUTHCENTRAL ALASKA...EN
SOUTHWEST ALASKA/BERING SEA/ALEUTIANS...DK
LONG TERM...JW

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 17, 4:04 PM AKDTSmall Craft AdvisoryAFC4 days
Jul 18, 3:52 AM AKDTSmall Craft AdvisoryAFC60 hr
Jul 18, 3:17 PM AKDTSmall Craft AdvisoryAFC37 hr

Nearby

Small Craft Advisories in Alaska, 2017Every small craft advisory in 2017

Sources

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