Gale Warning 303, NWS Anchorage, AK

607 
FZAK51 PAFC 032331
CWFAER

Coastal Waters Forecast
National Weather Service Anchorage Alaska
331 PM AKDT Tue Apr 3 2018

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.

PKZ197-041245-
331 PM AKDT Tue Apr 3 2018
.SYNOPSIS FOR THE NORTH GULF COAST+KODIAK ISLAND WATERS+
COOK INLET...
A 1008 mb low 60 nm northeast of Kodiak City will become a trough 
of low pressure along the North Gulf Coast this evening, then move 
inland and dissipate near Cook Inlet Wed evening. A weather front 
associated with a North Pacific low will then enter the Southern 
Gulf on Thu.

$$

PKZ119-041245-
Cape Suckling to Cape Cleare-
331 PM AKDT Tue Apr 3 2018

...GALE WARNING THROUGH WEDNESDAY...

.TONIGHT...SE wind 20 kt. Near the coast, E wind 25 kt increasing
to 35 kt after midnight. Seas 7 ft.
.WED...S wind 20 kt. Near the coast, E wind 35 kt becoming SE 25
kt in the afternoon. Seas 8 ft.
.WED NIGHT...SE wind 25 kt. Seas 8 ft.
.THU...E wind 20 kt. Seas 7 ft.
.THU NIGHT...NE wind 15 kt. Seas 7 ft.
.FRI...N wind 20 kt. Seas 11 ft.
.SAT...Variable wind 10 kt. Seas 8 ft.
.SUN...Variable wind 10 kt. Seas 5 ft.

$$

PKZ120-041245-
Cape Cleare to Gore Point-
331 PM AKDT Tue Apr 3 2018

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

.TONIGHT...NE wind 25 kt. Seas 6 ft. Freezing spray after midnight.
.WED...E wind 20 kt. Seas 8 ft. Freezing spray in the morning. 
Snow showers.
.WED NIGHT...SE wind 25 kt. Seas 8 ft. Snow showers.
.THU...E wind 20 kt. Seas 7 ft.
.THU NIGHT...NE wind 20 kt. Seas 8 ft.
.FRI...NW wind 20 kt. Seas 10 ft.
.SAT...Variable wind 10 kt. Seas 8 ft.
.SUN...NE wind 15 kt. Seas 5 ft.

$$

PKZ121-041245-
Resurrection Bay-
331 PM AKDT Tue Apr 3 2018

.TONIGHT...Variable wind 10 kt in the evening becoming N 20 kt. 
Seas building to 4 ft. Freezing spray after midnight. Widespread 
snow showers.
.WED...N wind 20 kt becoming Variable wind 10 kt in the afternoon.
Seas 4 ft subsiding to 2 ft in the afternoon. Freezing spray in 
the morning. Widespread snow showers.
.WED NIGHT...S wind 10 kt increasing to 15 kt after midnight. 
Seas 3 ft. Widespread snow showers.
.THU...Variable wind less than 10 kt. Seas 2 ft.
.THU NIGHT...N wind 10 kt. Seas 2 ft.
.FRI THROUGH SAT...N wind 15 kt. Seas 3 ft.
.SUN...Variable wind less than 10 kt. Seas 2 ft.

$$

PKZ125-041245-
Prince William Sound-
331 PM AKDT Tue Apr 3 2018

...GALE WARNING WEDNESDAY...

.TONIGHT...NE wind 20 kt increasing to 30 kt after midnight. 
Seas 3 ft building to 6 ft after midnight.
.WED...E wind 35 kt diminishing to 25 kt in the afternoon. 
Seas 7 ft. Widespread snow showers.
.WED NIGHT...SE wind 25 kt. Seas 4 ft. Widespread snow showers.
.THU...NE wind 15 kt. Seas 3 ft.
.THU NIGHT...N wind 10 kt. Seas 2 ft.
.FRI THROUGH SAT...N wind 10 kt. Seas 2 ft.
.SUN...Variable wind less than 10 kt. Seas 2 ft.

$$

PKZ126-041245-
Port Valdez-
331 PM AKDT Tue Apr 3 2018

.TONIGHT...NE wind 15 kt. Seas 3 ft. Freezing spray after midnight.
.WED...E wind 15 kt. Seas 3 ft. Freezing spray in the morning. 
Widespread snow showers.
.WED NIGHT...E wind 10 kt. Seas 2 ft. Snow showers.
.THU AND THU NIGHT...E wind 10 kt. Seas 2 ft.
.FRI THROUGH SAT...NE wind 10 kt. Seas 2 ft.
.SUN...Variable wind less than 10 kt. Seas 2 ft.

$$

PKZ127-041245-
Valdez Narrows-
331 PM AKDT Tue Apr 3 2018

...GALE WARNING THROUGH WEDNESDAY...

.TONIGHT...N wind 25 kt increasing to 35 kt after midnight. 
Seas 4 ft.
.WED...N wind 35 kt diminishing to 25 kt in the afternoon. 
Seas 4 ft. Widespread snow showers.
.WED NIGHT...N wind 25 kt. Seas 3 ft. Widespread snow showers.
.THU AND THU NIGHT...NE wind 15 kt. Seas 3 ft.
.FRI THROUGH SUN...NE wind 10 kt. Seas 2 ft.

$$

PKZ128-041245-
Valdez Arm-
331 PM AKDT Tue Apr 3 2018

...SMALL CRAFT ADVISORY THROUGH WEDNESDAY...

.TONIGHT...NE wind 25 kt. Seas 5 ft.
.WED...NE wind 25 kt. Seas 5 ft. Widespread snow showers.
.WED NIGHT...NE wind 20 kt. Seas 4 ft.
.THU...NE wind 15 kt. Seas 3 ft.
.THU NIGHT...NE wind 10 kt. Seas 2 ft.
.FRI THROUGH SUN...NE wind 10 kt. Seas 2 ft.

$$

PKZ129-041245-
Passage Canal-
331 PM AKDT Tue Apr 3 2018

...SMALL CRAFT ADVISORY WEDNESDAY...

.TONIGHT...E wind 10 kt. Seas 2 ft. Widespread snow showers.
.WED...E wind 25 kt. Seas 4 ft. Widespread snow showers.
.WED NIGHT...E wind 20 kt. Seas 3 ft. Freezing spray. 
Widespread snow showers.
.THU...E wind 15 kt. Seas 2 ft.
.THU NIGHT...E wind 10 kt. Seas 2 ft.
.FRI THROUGH SAT...W wind 10 kt. Seas 2 ft.
.SUN...Variable wind less than 10 kt. Seas 2 ft.

$$

PKZ130-041245-
West of Barren Islands including Kamishak Bay-
331 PM AKDT Tue Apr 3 2018

...GALE WARNING WEDNESDAY...

.TONIGHT...NE wind 30 kt. Seas 10 ft. Freezing spray.
.WED...NE wind 35 kt. Seas 12 ft. Freezing spray in the morning. 
Snow showers.
.WED NIGHT...NE wind 30 kt becoming SE 20 kt after midnight. 
Seas 10 ft subsiding to 6 ft after midnight. Freezing spray 
W of Augustine Island. Snow showers.
.THU...SE wind 25 kt. Seas 5 ft.
.THU NIGHT...E wind 20 kt. Seas 5 ft.
.FRI THROUGH SAT...N wind 15 kt. Seas 3 ft.
.SUN...Variable wind 10 kt. Seas 3 ft.

$$

PKZ131-041245-
Barren Islands East-
331 PM AKDT Tue Apr 3 2018

...SMALL CRAFT ADVISORY TONIGHT...

.TONIGHT...E wind 25 kt. Seas 7 ft.
.WED...E wind 20 kt. Seas 6 ft.
.WED NIGHT...SE wind 20 kt. Seas 7 ft.
.THU AND THU NIGHT...E wind 20 kt. Seas 8 ft.
.FRI...NW wind 20 kt. Seas 11 ft.
.SAT...NW wind 15 kt. Seas 7 ft.
.SUN...NE wind 15 kt. Seas 5 ft.

$$

PKZ132-041245-
Marmot Island to Sitkinak-
331 PM AKDT Tue Apr 3 2018

.TONIGHT...W wind 15 kt. Seas 5 ft.
.WED...S wind 15 kt. Seas 5 ft.
.WED NIGHT...SE wind 20 kt. Seas 5 ft.
.THU AND THU NIGHT...E wind 15 kt. Seas 8 ft.
.FRI...N wind 25 kt. Seas 11 ft.
.SAT...Variable wind 10 kt. Seas 7 ft.
.SUN...E wind 15 kt. Seas 6 ft.

$$

PKZ136-041245-
Chiniak Bay-
331 PM AKDT Tue Apr 3 2018

.TONIGHT...Variable wind less than 10 kt. Seas 2 ft.
.WED...Variable wind less than 10 kt becoming SE 10 kt in 
the afternoon. Seas 1 ft building to 3 ft in the afternoon.
.WED NIGHT...S wind 15 kt. Seas 2 ft.
.THU...SE wind 15 kt. Seas 3 ft.
.THU NIGHT...E wind 10 kt. Seas 3 ft.
.FRI...NW wind 15 kt. Seas 3 ft.
.SAT...Variable wind less than 10 kt. Seas 3 ft.
.SUN...E wind 10 kt. Seas 3 ft.

$$

PKZ137-041245-
Marmot Bay-
331 PM AKDT Tue Apr 3 2018

.TONIGHT...N wind 10 kt. Seas 3 ft.
.WED...E wind 10 kt. Seas 3 ft.
.WED NIGHT...SE wind 15 kt. Seas 4 ft.
.THU...SE wind 15 kt. Seas 4 ft.
.THU NIGHT...E wind 10 kt. Seas 3 ft.
.FRI...NW wind 15 kt. Seas 3 ft.
.SAT...Variable wind less than 10 kt. Seas 3 ft.
.SUN...E wind 10 kt. Seas 3 ft.

$$

PKZ138-041245-
Shelikof Strait-
331 PM AKDT Tue Apr 3 2018

...SMALL CRAFT ADVISORY WEDNESDAY...

.TONIGHT...NE wind 20 kt. Seas 6 ft. Snow showers.
.WED...NE wind 25 kt. Seas 7 ft.
.WED NIGHT...E wind 15 kt. Seas 4 ft.
.THU AND THU NIGHT...E wind 15 kt. Seas 3 ft.
.FRI...N wind 15 kt. Seas 3 ft.
.SAT...Variable wind 10 kt. Seas 3 ft.
.SUN...NE wind 15 kt. Seas 3 ft.

$$

PKZ139-041245-
Cook Inlet Kalgin Island to Point Bede-
331 PM AKDT Tue Apr 3 2018

...HEAVY FREEZING SPRAY WARNING THROUGH WEDNESDAY...
...SMALL CRAFT ADVISORY THROUGH WEDNESDAY NIGHT...

.TONIGHT...NE wind 30 kt. Seas 7 ft building to 10 ft after
midnight. Heavy freezing spray after midnight.
.WED...NE wind 30 kt. Seas 11 ft. Heavy freezing spray in 
the morning. Snow showers.
.WED NIGHT...NE wind 30 kt diminishing to 20 kt after midnight.
Seas 8 ft. Freezing spray. Widespread snow showers.
.THU...NE wind 15 kt. Seas 3 ft.
.THU NIGHT...NE wind 10 kt. Seas 3 ft.
.FRI THROUGH SUN...N wind 10 kt. Seas 3 ft.

$$

PKZ140-041245-
Cook Inlet North of Kalgin Island-
331 PM AKDT Tue Apr 3 2018

...SMALL CRAFT ADVISORY THROUGH WEDNESDAY...

.TONIGHT...N wind 15 kt in the evening increasing to 25 kt. 
Seas 8 ft. Freezing spray.
.WED...N wind 25 kt. Seas 8 ft. Freezing spray in the morning. 
Snow showers.
.WED NIGHT...NE wind 20 kt. Seas 5 ft. Widespread snow showers.
.THU...NE wind 15 kt. Seas 3 ft.
.THU NIGHT...N wind 10 kt. Seas 3 ft.
.FRI THROUGH SUN...N wind 10 kt. Seas 3 ft.

$$

PKZ141-041245-
Kachemak Bay-
331 PM AKDT Tue Apr 3 2018

.TONIGHT...NE wind 15 kt diminishing to 10 kt after midnight. 
Seas 2 ft.
.WED...NE wind 15 kt. Seas 2 ft. Snow showers.
.WED NIGHT...E wind 10 kt becoming SE 15 kt after midnight. 
Seas 2 ft. Snow showers.
.THU...SE wind 15 kt. Seas 2 ft.
.THU NIGHT...E wind 10 kt. Seas 2 ft.
.FRI THROUGH SUN...NE wind 10 kt. Seas 2 ft.

$$

347 
FZAK51 PAFC 041122
CWFAER

Coastal Waters Forecast
National Weather Service Anchorage Alaska
322 AM AKDT Wed Apr 4 2018

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.

PKZ197-050030-
322 AM AKDT Wed Apr 4 2018
.SYNOPSIS FOR THE NORTH GULF COAST+KODIAK ISLAND WATERS+
COOK INLET...
A weak trough over Kodiak Island moves inland this morning. A
front enters the southern Gulf and moves to the northern Gulf Thu
night. The associated 980 mb low 580 nm southwest of Hydaburg
tonight moves 340 nm southwest of Hydaburg at 981 mb Thu night.

$$

PKZ119-050030-
Cape Suckling to Cape Cleare-
322 AM AKDT Wed Apr 4 2018

...GALE WARNING TODAY...

.TODAY...SE wind 20 kt. Near the coast...E wind 35 kt becoming SE 25
kt in the afternoon. Seas 7 ft.
.TONIGHT...SE wind 25 kt. Seas 8 ft.
.THU...E wind 20 kt. Seas 7 ft.
.THU NIGHT...NE wind 15 kt. Seas 8 ft.
.FRI...NE wind 20 kt. Seas 11 ft.
.SAT...N wind 15 kt. Seas 9 ft.
.SUN...E wind 20 kt. Seas 5 ft.

$$

PKZ120-050030-
Cape Cleare to Gore Point-
322 AM AKDT Wed Apr 4 2018

...SMALL CRAFT ADVISORY THROUGH TONIGHT...

.TODAY...NE wind 25 kt becoming SE in the afternoon. Seas 8 ft. 
Freezing spray. Snow showers.
.TONIGHT...SE wind 25 kt. Seas 8 ft. Snow showers.
.THU...E wind 20 kt. Seas 7 ft.
.THU NIGHT...NE wind 15 kt. Seas 7 ft.
.FRI...NE wind 20 kt. Seas 11 ft.
.SAT...N wind 15 kt. Seas 9 ft.
.SUN...NE wind 20 kt. Seas 6 ft.

$$

PKZ121-050030-
Resurrection Bay-
322 AM AKDT Wed Apr 4 2018

.TODAY...N wind 15 kt becoming S 10 kt in the afternoon. Seas 3
ft. Freezing spray in the morning. Widespread snow showers.
.TONIGHT...S wind 10 kt. Seas 2 ft. Widespread snow showers.
.THU...Variable wind less than 10 kt. Seas 2 ft. Widespread snow
showers.
.THU NIGHT...N wind 10 kt. Seas 2 ft.
.FRI...N wind 10 kt. Seas 2 ft.
.SAT...N wind 15 kt. Seas 3 ft.
.SUN...N wind 20 kt. Seas 4 ft.

$$

PKZ125-050030-
Prince William Sound-
322 AM AKDT Wed Apr 4 2018

...SMALL CRAFT ADVISORY THROUGH TONIGHT...

.TODAY...E wind 30 kt. Seas 7 ft. Widespread snow showers.
.TONIGHT...SE wind 25 kt. Seas 4 ft. Widespread snow showers.
.THU...NE wind 20 kt becoming N 10 kt in the afternoon. Seas 3 ft.
.THU NIGHT...N wind 10 kt. Seas 2 ft.
.FRI THROUGH SAT...N wind 10 kt. Seas 2 ft.
.SUN...NE wind 10 kt. Seas 2 ft.

$$

PKZ126-050030-
Port Valdez-
322 AM AKDT Wed Apr 4 2018

.TODAY...E wind 15 kt. Seas 3 ft. Freezing spray. Widespread snow
showers.
.TONIGHT...E wind 10 kt. Seas 2 ft. Snow showers.
.THU...NE wind 10 kt. Seas 2 ft.
.THU NIGHT...E wind 10 kt. Seas 2 ft.
.FRI THROUGH SAT...NE wind 10 kt. Seas 2 ft.
.SUN...Variable wind less than 10 kt. Seas 2 ft.

$$

PKZ127-050030-
Valdez Narrows-
322 AM AKDT Wed Apr 4 2018

.TODAY...N wind 20 kt. Seas 3 ft. Widespread snow showers.
.TONIGHT...N wind 15 kt. Seas 3 ft. Widespread snow showers.
.THU...N wind 15 kt. Seas 3 ft.
.THU NIGHT...NE wind 15 kt. Seas 3 ft.
.FRI...NE wind 10 kt. Seas 2 ft.
.SAT THROUGH SUN...NE wind 15 kt. Seas 3 ft.

$$

PKZ128-050030-
Valdez Arm-
322 AM AKDT Wed Apr 4 2018

.TODAY...NE wind 20 kt. Seas 4 ft. Widespread snow showers.
.TONIGHT...NE wind 15 kt diminishing to 10 kt after midnight. Seas
3 ft. Widespread snow showers.
.THU...NE wind 15 kt diminishing to 10 kt in the afternoon. Seas
3 ft.
.THU NIGHT...NE wind 10 kt. Seas 2 ft.
.FRI THROUGH SUN...NE wind 10 kt. Seas 2 ft.

$$

PKZ129-050030-
Passage Canal-
322 AM AKDT Wed Apr 4 2018

...SMALL CRAFT ADVISORY TODAY...

.TODAY...E wind 25 kt. Seas 4 ft. Widespread snow showers.
.TONIGHT...E wind 20 kt. Seas 3 ft. Widespread snow showers.
.THU...E wind 15 kt diminishing to 10 kt in the afternoon. Seas
2 ft. Snow showers.
.THU NIGHT...E wind 10 kt. Seas 2 ft.
.FRI THROUGH SAT...W wind 10 kt. Seas 2 ft.
.SUN...E wind 15 kt. Seas 2 ft.

$$

PKZ130-050030-
West of Barren Islands including Kamishak Bay-
322 AM AKDT Wed Apr 4 2018

...GALE WARNING TODAY...

.TODAY...NE wind 35 kt. Seas 10 ft. Freezing spray. Snow showers.
.TONIGHT...NE wind 25 kt. Seas 7 ft. Freezing spray. Snow showers.
.THU...SE wind 25 kt. Seas 6 ft.
.THU NIGHT...E wind 20 kt. Seas 5 ft.
.FRI THROUGH SAT...N wind 15 kt. Seas 4 ft.
.SUN...NE wind 15 kt. Seas 4 ft.

$$

PKZ131-050030-
Barren Islands East-
322 AM AKDT Wed Apr 4 2018

...SMALL CRAFT ADVISORY TODAY...

.TODAY...E wind 25 kt. Seas 7 ft.
.TONIGHT...S wind 20 kt. Seas 6 ft.
.THU...SE wind 20 kt. Seas 7 ft.
.THU NIGHT...E wind 20 kt. Seas 9 ft.
.FRI THROUGH SAT...N wind 20 kt. Seas 10 ft.
.SUN...NE wind 20 kt. Seas 6 ft.

$$

PKZ132-050030-
Marmot Island to Sitkinak-
322 AM AKDT Wed Apr 4 2018

.TODAY...S wind 20 kt. Seas 5 ft.
.TONIGHT...SE wind 20 kt. Seas 5 ft.
.THU...SE wind 15 kt. Seas 7 ft.
.THU NIGHT...NE wind 15 kt. Seas 9 ft.
.FRI THROUGH SAT...NE wind 25 kt. Seas 11 ft.
.SUN...E wind 20 kt. Seas 7 ft.

$$

PKZ136-050030-
Chiniak Bay-
322 AM AKDT Wed Apr 4 2018

.TODAY...Variable wind less than 10 kt becoming SE 10 kt in the
afternoon. Seas 3 ft.
.TONIGHT...S wind 15 kt. Seas 3 ft. Snow showers and rain showers.
.THU...SE wind 15 kt diminishing to 10 kt in the afternoon. Seas
4 ft.
.THU NIGHT...E wind 10 kt. Seas 3 ft.
.FRI...N wind 20 kt. Seas 4 ft.
.SAT...N wind 15 kt. Seas 3 ft.
.SUN...NE wind 10 kt. Seas 3 ft.

$$

PKZ137-050030-
Marmot Bay-
322 AM AKDT Wed Apr 4 2018

.TODAY...Variable wind less than 10 kt becoming S 10 kt in the
afternoon. Seas 3 ft.
.TONIGHT...SE wind 20 kt. Seas 4 ft.
.THU...SE wind 20 kt. Seas 4 ft.
.THU NIGHT...E wind 10 kt. Seas 3 ft.
.FRI THROUGH SAT...N wind 15 kt. Seas 3 ft.
.SUN...NE wind 10 kt. Seas 3 ft.

$$

PKZ138-050030-
Shelikof Strait-
322 AM AKDT Wed Apr 4 2018

...SMALL CRAFT ADVISORY TODAY...

.TODAY...NE wind 25 kt. Seas 7 ft.
.TONIGHT...E wind 15 kt. Seas 3 ft.
.THU...SE wind 15 kt. Seas 3 ft.
.THU NIGHT...Variable wind 10 kt. Seas 3 ft.
.FRI THROUGH SUN...NE wind 15 kt. Seas 4 ft.

$$

PKZ139-050030-
Cook Inlet Kalgin Island to Point Bede-
322 AM AKDT Wed Apr 4 2018

...GALE WARNING TODAY...

.TODAY...NE wind 35 kt. Seas 10 ft. Freezing spray.
.TONIGHT...NE wind 25 kt. Seas 5 ft. Freezing spray. Widespread
snow showers.
.THU...E wind 20 kt. Seas 4 ft.
.THU NIGHT...NE wind 15 kt. Seas 3 ft.
.FRI THROUGH SAT...N wind 15 kt. Seas 3 ft.
.SUN...NE wind 10 kt. Seas 3 ft.

$$

PKZ140-050030-
Cook Inlet North of Kalgin Island-
322 AM AKDT Wed Apr 4 2018

...SMALL CRAFT ADVISORY TODAY...

.TODAY...N wind 25 kt. Seas 7 ft. Freezing spray. Widespread snow
showers.
.TONIGHT...NE wind 20 kt. Seas 5 ft subsiding to 3 ft after
midnight. Widespread snow showers.
.THU...NE wind 20 kt. Seas 5 ft.
.THU NIGHT...N wind 15 kt. Seas 3 ft.
.FRI THROUGH SUN...N wind 10 kt. Seas 3 ft.

$$

PKZ141-050030-
Kachemak Bay-
322 AM AKDT Wed Apr 4 2018

.TODAY...NE wind 15 kt. Seas 2 ft. Widespread snow showers.
.TONIGHT...E wind 10 kt becoming SE 15 kt after midnight. Seas 2
ft. Snow showers.
.THU...SE wind 15 kt. Seas 2 ft.
.THU NIGHT...E wind 10 kt. Seas 2 ft.
.FRI...N wind 10 kt. Seas 2 ft.
.SAT...N wind 15 kt. Seas 2 ft.
.SUN...NE wind 10 kt. Seas 2 ft.

$$

189 
FZAK51 PAFC 041501 AAA
CWFAER

Coastal Waters Forecast...UPDATED
National Weather Service Anchorage AK
701 AM AKDT Wed Apr 4 2018

Updated 125 127 and 128

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.

PKZ197-050330-
701 AM AKDT Wed Apr 4 2018
.SYNOPSIS FOR THE NORTH GULF COAST+KODIAK ISLAND WATERS+
COOK INLET...
A weak trough over Kodiak Island moves inland this morning. A
front enters the southern Gulf and moves to the northern Gulf Thu
night. The associated 980 mb low 580 nm southwest of Hydaburg
tonight moves 340 nm southwest of Hydaburg at 981 mb Thu night.

$$

PKZ119-050330-
Cape Suckling to Cape Cleare-
701 AM AKDT Wed Apr 4 2018

...GALE WARNING TODAY...

.TODAY...SE wind 20 kt. Near the coast...E wind 35 kt becoming SE
25 kt in the afternoon. Seas 7 ft. 
.TONIGHT...SE wind 25 kt. Seas 8 ft. 
.THU...E wind 20 kt. Seas 7 ft. 
.THU NIGHT...NE wind 15 kt. Seas 8 ft. 
.FRI...NE wind 20 kt. Seas 11 ft. 
.SAT...N wind 15 kt. Seas 9 ft. 
.SUN...E wind 20 kt. Seas 5 ft.

$$

PKZ120-050330-
Cape Cleare to Gore Point-
701 AM AKDT Wed Apr 4 2018

...SMALL CRAFT ADVISORY THROUGH TONIGHT...

.TODAY...NE wind 25 kt becoming SE in the afternoon. Seas 8 ft. 
Freezing spray. Snow showers. 
.TONIGHT...SE wind 25 kt. Seas 8 ft. Snow showers. 
.THU...E wind 20 kt. Seas 7 ft. 
.THU NIGHT...NE wind 15 kt. Seas 7 ft. 
.FRI...NE wind 20 kt. Seas 11 ft. 
.SAT...N wind 15 kt. Seas 9 ft. 
.SUN...NE wind 20 kt. Seas 6 ft.

$$

PKZ121-050330-
Resurrection Bay-
701 AM AKDT Wed Apr 4 2018

.TODAY...N wind 15 kt becoming S 10 kt in the afternoon. Seas
3 ft. Freezing spray in the morning. Widespread snow showers. 
.TONIGHT...S wind 10 kt. Seas 2 ft. Widespread snow showers. 
.THU...Variable wind less than 10 kt. Seas 2 ft. Widespread snow
showers. 
.THU NIGHT...N wind 10 kt. Seas 2 ft. 
.FRI...N wind 10 kt. Seas 2 ft. 
.SAT...N wind 15 kt. Seas 3 ft. 
.SUN...N wind 20 kt. Seas 4 ft.

$$

PKZ125-050330-
Prince William Sound-
701 AM AKDT Wed Apr 4 2018

...SMALL CRAFT ADVISORY THROUGH TONIGHT...

.TODAY...E wind 30 kt. Gusts to 40 kt near Hinchinbrook Entrance
in the morning. Seas 7 ft. Widespread snow showers.
.TONIGHT...SE wind 25 kt. Seas 4 ft. Widespread snow showers. 
.THU...NE wind 20 kt becoming N 10 kt in the afternoon. Seas
3 ft. 
.THU NIGHT...N wind 10 kt. Seas 2 ft. 
.FRI THROUGH SAT...N wind 10 kt. Seas 2 ft. 
.SUN...NE wind 10 kt. Seas 2 ft.

$$

PKZ126-050330-
Port Valdez-
701 AM AKDT Wed Apr 4 2018

.TODAY...E wind 15 kt. Seas 3 ft. Freezing spray. Widespread snow
showers. 
.TONIGHT...E wind 10 kt. Seas 2 ft. Snow showers. 
.THU...NE wind 10 kt. Seas 2 ft. 
.THU NIGHT...E wind 10 kt. Seas 2 ft. 
.FRI THROUGH SAT...NE wind 10 kt. Seas 2 ft. 
.SUN...Variable wind less than 10 kt. Seas 2 ft.

$$

PKZ127-050330-
Valdez Narrows-
701 AM AKDT Wed Apr 4 2018

...SMALL CRAFT ADVISORY TODAY...

.TODAY...N wind 25 kt diminishing to 15 kt in the afternoon. Seas
3 ft. Widespread snow showers.
.TONIGHT...N wind 15 kt. Seas 3 ft. Widespread snow showers. 
.THU...N wind 15 kt. Seas 3 ft. 
.THU NIGHT...NE wind 15 kt. Seas 3 ft. 
.FRI...NE wind 10 kt. Seas 2 ft. 
.SAT THROUGH SUN...NE wind 15 kt. Seas 3 ft.

$$

PKZ128-050330-
Valdez Arm-
701 AM AKDT Wed Apr 4 2018

...SMALL CRAFT ADVISORY TODAY...

.TODAY...NE wind 25 kt diminishing to 15 kt in the afternoon. 
Seas 4 ft. Widespread snow showers. 
.TONIGHT...NE wind 15 kt diminishing to 10 kt after midnight.
Seas 3 ft. Widespread snow showers. 
.THU...NE wind 15 kt diminishing to 10 kt in the afternoon. Seas
3 ft. 
.THU NIGHT...NE wind 10 kt. Seas 2 ft. 
.FRI THROUGH SUN...NE wind 10 kt. Seas 2 ft.

$$

PKZ129-050330-
Passage Canal-
701 AM AKDT Wed Apr 4 2018

...SMALL CRAFT ADVISORY TODAY...

.TODAY...E wind 25 kt. Seas 4 ft. Widespread snow showers. 
.TONIGHT...E wind 20 kt. Seas 3 ft. Widespread snow showers. 
.THU...E wind 15 kt diminishing to 10 kt in the afternoon. Seas
2 ft. Snow showers. 
.THU NIGHT...E wind 10 kt. Seas 2 ft. 
.FRI THROUGH SAT...W wind 10 kt. Seas 2 ft. 
.SUN...E wind 15 kt. Seas 2 ft.

$$

PKZ130-050330-
West of Barren Islands including Kamishak Bay-
701 AM AKDT Wed Apr 4 2018

...GALE WARNING TODAY...

.TODAY...NE wind 35 kt. Seas 10 ft. Freezing spray. Snow showers.
.TONIGHT...NE wind 25 kt. Seas 7 ft. Freezing spray. Snow
showers. 
.THU...SE wind 25 kt. Seas 6 ft. 
.THU NIGHT...E wind 20 kt. Seas 5 ft. 
.FRI THROUGH SAT...N wind 15 kt. Seas 4 ft. 
.SUN...NE wind 15 kt. Seas 4 ft.

$$

PKZ131-050330-
Barren Islands East-
701 AM AKDT Wed Apr 4 2018

...SMALL CRAFT ADVISORY TODAY...

.TODAY...E wind 25 kt. Seas 7 ft. 
.TONIGHT...S wind 20 kt. Seas 6 ft. 
.THU...SE wind 20 kt. Seas 7 ft. 
.THU NIGHT...E wind 20 kt. Seas 9 ft. 
.FRI THROUGH SAT...N wind 20 kt. Seas 10 ft. 
.SUN...NE wind 20 kt. Seas 6 ft.

$$

PKZ132-050330-
Marmot Island to Sitkinak-
701 AM AKDT Wed Apr 4 2018

.TODAY...S wind 20 kt. Seas 5 ft. 
.TONIGHT...SE wind 20 kt. Seas 5 ft. 
.THU...SE wind 15 kt. Seas 7 ft. 
.THU NIGHT...NE wind 15 kt. Seas 9 ft. 
.FRI THROUGH SAT...NE wind 25 kt. Seas 11 ft. 
.SUN...E wind 20 kt. Seas 7 ft.

$$

PKZ136-050330-
Chiniak Bay-
701 AM AKDT Wed Apr 4 2018

.TODAY...Variable wind less than 10 kt becoming SE 10 kt in the
afternoon. Seas 3 ft. 
.TONIGHT...S wind 15 kt. Seas 3 ft. Snow showers and rain
showers. 
.THU...SE wind 15 kt diminishing to 10 kt in the afternoon. Seas
4 ft. 
.THU NIGHT...E wind 10 kt. Seas 3 ft. 
.FRI...N wind 20 kt. Seas 4 ft. 
.SAT...N wind 15 kt. Seas 3 ft. 
.SUN...NE wind 10 kt. Seas 3 ft.

$$

PKZ137-050330-
Marmot Bay-
701 AM AKDT Wed Apr 4 2018

.TODAY...Variable wind less than 10 kt becoming S 10 kt in the
afternoon. Seas 3 ft. 
.TONIGHT...SE wind 20 kt. Seas 4 ft. 
.THU...SE wind 20 kt. Seas 4 ft. 
.THU NIGHT...E wind 10 kt. Seas 3 ft. 
.FRI THROUGH SAT...N wind 15 kt. Seas 3 ft. 
.SUN...NE wind 10 kt. Seas 3 ft.

$$

PKZ138-050330-
Shelikof Strait-
701 AM AKDT Wed Apr 4 2018

...SMALL CRAFT ADVISORY TODAY...

.TODAY...NE wind 25 kt. Seas 7 ft. 
.TONIGHT...E wind 15 kt. Seas 3 ft. 
.THU...SE wind 15 kt. Seas 3 ft. 
.THU NIGHT...Variable wind 10 kt. Seas 3 ft. 
.FRI THROUGH SUN...NE wind 15 kt. Seas 4 ft.

$$

PKZ139-050330-
Cook Inlet Kalgin Island to Point Bede-
701 AM AKDT Wed Apr 4 2018

...GALE WARNING TODAY...

.TODAY...NE wind 35 kt. Seas 10 ft. Freezing spray. 
.TONIGHT...NE wind 25 kt. Seas 5 ft. Freezing spray. Widespread
snow showers. 
.THU...E wind 20 kt. Seas 4 ft. 
.THU NIGHT...NE wind 15 kt. Seas 3 ft. 
.FRI THROUGH SAT...N wind 15 kt. Seas 3 ft. 
.SUN...NE wind 10 kt. Seas 3 ft.

$$

PKZ140-050330-
Cook Inlet North of Kalgin Island-
701 AM AKDT Wed Apr 4 2018

...SMALL CRAFT ADVISORY TODAY...

.TODAY...N wind 25 kt. Seas 7 ft. Freezing spray. Widespread snow
showers. 
.TONIGHT...NE wind 20 kt. Seas 5 ft subsiding to 3 ft after
midnight. Widespread snow showers. 
.THU...NE wind 20 kt. Seas 5 ft. 
.THU NIGHT...N wind 15 kt. Seas 3 ft. 
.FRI THROUGH SUN...N wind 10 kt. Seas 3 ft.

$$

PKZ141-050330-
Kachemak Bay-
701 AM AKDT Wed Apr 4 2018

.TODAY...NE wind 15 kt. Seas 2 ft. Widespread snow showers. 
.TONIGHT...E wind 10 kt becoming SE 15 kt after midnight. Seas
2 ft. Snow showers. 
.THU...SE wind 15 kt. Seas 2 ft. 
.THU NIGHT...E wind 10 kt. Seas 2 ft. 
.FRI...N wind 10 kt. Seas 2 ft. 
.SAT...N wind 15 kt. Seas 2 ft. 
.SUN...NE wind 10 kt. Seas 2 ft.

$$

268 
FZAK51 PAFC 042327
CWFAER

Coastal Waters Forecast
National Weather Service Anchorage Alaska
327 PM AKDT Wed Apr 4 2018

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.

PKZ197-051245-
327 PM AKDT Wed Apr 4 2018
.SYNOPSIS FOR THE NORTH GULF COAST+KODIAK ISLAND WATERS+
COOK INLET...
A weak trough over the western Gulf and Cook Inlet moves inland 
tonight. A front enters the southern Gulf Thu afternoon and moves 
to the central Gulf by Fri afternoon. The associated Pacific low 
moves to 480 nm south of Yakutat at 981 mb Fri afternoon.

$$

PKZ119-051245-
Cape Suckling to Cape Cleare-
327 PM AKDT Wed Apr 4 2018

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

.TONIGHT...SE wind 25 kt. Seas 8 ft.
.THU...E wind 20 kt. Seas 7 ft.
.THU NIGHT...N wind 15 kt. Seas 8 ft.
.FRI AND FRI NIGHT...NE wind 20 kt. Seas 11 ft.
.SAT...NW wind 15 kt. Seas 10 ft.
.SUN THROUGH MON...E wind 20 kt. Seas 6 ft.

$$

PKZ120-051245-
Cape Cleare to Gore Point-
327 PM AKDT Wed Apr 4 2018

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

.TONIGHT...SE wind 25 kt. Seas 8 ft. Snow showers.
.THU...E wind 20 kt. Seas 7 ft.
.THU NIGHT...NE wind 15 kt. Seas 8 ft.
.FRI AND FRI NIGHT...NE wind 20 kt. Seas 10 ft.
.SAT...N wind 20 kt. Seas 10 ft.
.SUN...NE wind 20 kt. Seas 6 ft.
.MON...E wind 25 kt. Seas 5 ft.

$$

PKZ121-051245-
Resurrection Bay-
327 PM AKDT Wed Apr 4 2018

.TONIGHT...Variable wind 10 kt in the evening becoming S. Seas 2 ft.
Widespread snow showers.
.THU...Variable wind less than 10 kt. Seas 2 ft. Snow showers.
.THU NIGHT...N wind 10 kt. Seas 2 ft.
.FRI AND FRI NIGHT...N wind 10 kt. Seas 2 ft.
.SAT...N wind 15 kt. Seas 3 ft.
.SUN THROUGH MON...N wind 20 kt. Seas 4 ft.

$$

PKZ125-051245-
Prince William Sound-
327 PM AKDT Wed Apr 4 2018

...SMALL CRAFT ADVISORY TONIGHT...

.TONIGHT...SE wind 25 kt. Seas 4 ft. Widespread snow showers.
.THU...NE wind 15 kt becoming N 10 kt in the afternoon. Seas 3 ft.
.THU NIGHT...NW wind 10 kt in the evening becoming variable less
than 10 kt. Seas 2 ft.
.FRI...Variable wind less than 10 kt. Seas 2 ft.
.FRI NIGHT...N wind 10 kt. Seas 2 ft.
.SAT...NW wind 10 kt. Seas 2 ft.
.SUN...NE wind 10 kt. Seas 2 ft.
.MON...NE wind 15 kt. Seas 2 ft.

$$

PKZ126-051245-
Port Valdez-
327 PM AKDT Wed Apr 4 2018

.TONIGHT...E wind 10 kt. Seas 2 ft. Snow showers.
.THU...NE wind 10 kt. Seas 2 ft.
.THU NIGHT...NE wind 10 kt. Seas 2 ft.
.FRI...NE wind 10 kt. Seas 2 ft.
.FRI NIGHT...Variable wind less than 10 kt. Seas 2 ft.
.SAT...NE wind 15 kt. Seas 3 ft.
.SUN THROUGH MON...Variable wind less than 10 kt. Seas 2 ft.

$$

PKZ127-051245-
Valdez Narrows-
327 PM AKDT Wed Apr 4 2018

.TONIGHT...N wind 20 kt. Seas 3 ft. Widespread snow showers.
.THU...N wind 15 kt. Seas 3 ft.
.THU NIGHT...NE wind 15 kt diminishing to 10 kt after midnight.
Seas 3 ft.
.FRI AND FRI NIGHT...NE wind 10 kt. Seas 2 ft.
.SAT...NE wind 20 kt. Seas 3 ft.
.SUN...NE wind 15 kt. Seas 3 ft.
.MON...NE wind 10 kt. Seas 2 ft.

$$

PKZ128-051245-
Valdez Arm-
327 PM AKDT Wed Apr 4 2018

.TONIGHT...NE wind 15 kt diminishing to 10 kt after midnight. 
Seas 3 ft. Widespread snow showers.
.THU...NE wind 15 kt diminishing to 10 kt in the afternoon. 
Seas 3 ft.
.THU NIGHT...NE wind 10 kt. Seas 2 ft.
.FRI AND FRI NIGHT...N wind 10 kt. Seas 2 ft.
.SAT...N wind 15 kt. Seas 3 ft.
.SUN THROUGH MON...NE wind 10 kt. Seas 2 ft.

$$

PKZ129-051245-
Passage Canal-
327 PM AKDT Wed Apr 4 2018

...SMALL CRAFT ADVISORY TONIGHT...

.TONIGHT...E wind 25 kt. Seas 3 ft. Widespread snow showers.
.THU...E wind 15 kt diminishing to 10 kt in the afternoon. 
Seas 2 ft. Snow showers.
.THU NIGHT...Variable wind less than 10 kt. Seas 2 ft.
.FRI AND FRI NIGHT...Variable wind less than 10 kt. Seas 2 ft.
.SAT...W wind 10 kt. Seas 2 ft.
.SUN THROUGH MON...E wind 15 kt. Seas 2 ft.

$$

PKZ130-051245-
West of Barren Islands including Kamishak Bay-
327 PM AKDT Wed Apr 4 2018

...SMALL CRAFT ADVISORY THROUGH THURSDAY...

.TONIGHT...NE wind 25 kt. Seas 7 ft. Freezing spray W of Augustine
Island. Snow showers.
.THU...SE wind 25 kt. Freezing spray W of Augustine Island in the 
morning. Seas 8 ft. Snow showers.
.THU NIGHT...E wind 20 kt. Seas 6 ft.
.FRI...N wind 15 kt. Seas 4 ft.
.FRI NIGHT...NW wind 15 kt. Seas 5 ft.
.SAT...N wind 20 kt. Seas 6 ft.
.SUN...NE wind 15 kt. Seas 4 ft.
.MON...E wind 20 kt. Seas 5 ft.

$$

PKZ131-051245-
Barren Islands East-
327 PM AKDT Wed Apr 4 2018

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

.TONIGHT...SE wind 25 kt. Seas 7 ft.
.THU...SE wind 25 kt. Seas 8 ft.
.THU NIGHT...E wind 20 kt. Seas 9 ft.
.FRI...NE wind 20 kt. Seas 9 ft.
.FRI NIGHT...NE wind 25 kt. Seas 11 ft.
.SAT...N wind 20 kt. Seas 10 ft.
.SUN...NE wind 20 kt. Seas 6 ft.
.MON...E wind 25 kt. Seas 6 ft.

$$

PKZ132-051245-
Marmot Island to Sitkinak-
327 PM AKDT Wed Apr 4 2018

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

.TONIGHT...SE wind 20 kt. Seas 6 ft.
.THU...SE wind 20 kt. Seas 8 ft.
.THU NIGHT...E wind 15 kt. Seas 9 ft.
.FRI...N wind 20 kt. Seas 10 ft.
.FRI NIGHT...N wind 25 kt. Seas 11 ft.
.SAT...NE wind 25 kt. Seas 11 ft.
.SUN THROUGH MON...E wind 20 kt. Seas 6 ft.

$$

PKZ136-051245-
Chiniak Bay-
327 PM AKDT Wed Apr 4 2018

.TONIGHT...SE wind 15 kt. Seas 4 ft. Snow showers and rain showers.
.THU...SE wind 15 kt diminishing to 10 kt in the afternoon. Seas
4 ft.
.THU NIGHT...E wind 10 kt. Seas 3 ft.
.FRI...N wind 15 kt. Seas 3 ft.
.FRI NIGHT...N wind 20 kt. Seas 4 ft.
.SAT...N wind 20 kt. Seas 4 ft.
.SUN...NE wind 10 kt. Seas 3 ft.
.MON...E wind 15 kt. Seas 4 ft.

$$

PKZ137-051245-
Marmot Bay-
327 PM AKDT Wed Apr 4 2018

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

$$

PKZ138-051245-
Shelikof Strait-
327 PM AKDT Wed Apr 4 2018

.TONIGHT...E wind 20 kt. Seas 4 ft.
.THU...SE wind 15 kt. Seas 4 ft. Snow.
.THU NIGHT...Variable wind 10 kt. Seas 3 ft.
.FRI AND FRI NIGHT...N wind 15 kt. Seas 3 ft.
.SAT...NE wind 20 kt. Seas 5 ft.
.SUN...NE wind 15 kt. Seas 4 ft.
.MON...NE wind 20 kt. Seas 5 ft.

$$

PKZ139-051245-
Cook Inlet Kalgin Island to Point Bede-
327 PM AKDT Wed Apr 4 2018

...SMALL CRAFT ADVISORY TONIGHT...

.TONIGHT...NE wind 25 kt. Seas 6 ft. Freezing spray. Widespread
snow showers.
.THU...E wind 20 kt. Freezing spray in the morning. Seas 4 ft.
.THU NIGHT...NE wind 15 kt. Seas 3 ft.
.FRI AND FRI NIGHT...N wind 15 kt. Seas 4 ft.
.SAT...N wind 20 kt. Seas 4 ft.
.SUN...NE wind 10 kt. Seas 3 ft.
.MON...NE wind 15 kt. Seas 3 ft.

$$

PKZ140-051245-
Cook Inlet North of Kalgin Island-
327 PM AKDT Wed Apr 4 2018

.TONIGHT...NE wind 20 kt. Seas 4 ft. Widespread snow showers.
.THU...NE wind 20 kt. Seas 4 ft.
.THU NIGHT...N wind 15 kt diminishing to 10 kt after midnight.
Seas 3 ft.
.FRI AND FRI NIGHT...N wind 10 kt. Seas 2 ft.
.SAT THROUGH SUN...N wind 10 kt. Seas 3 ft.
.MON...N wind 15 kt. Seas 3 ft.

$$

PKZ141-051245-
Kachemak Bay-
327 PM AKDT Wed Apr 4 2018

.TONIGHT...E wind 15 kt becoming SE 20 kt after midnight. 
Seas 2 ft. Snow showers.
.THU...SE wind 20 kt. Seas 2 ft.
.THU NIGHT...Variable wind less than 10 kt. Seas 2 ft.
.FRI AND FRI NIGHT...N wind 10 kt. Seas 2 ft.
.SAT...N wind 15 kt. Seas 2 ft.
.SUN...NE wind 10 kt. Seas 2 ft.
.MON...NE wind 15 kt. Seas 3 ft.

$$

Southcentral and Southwest Alaska Forecast Discussion
National Weather Service Anchorage AK
503 PM AKDT Mon Apr 2 2018

.ANALYSIS AND UPPER LEVELS...
High pressure persists over most of mainland Alaska and the
northern Bering. The expansive ridge of high pressure has brought
clear skies and dry conditions to much of the mainland and the
northern Gulf. The tightly packed pressure gradient along the
North Gulf Coast is causing northerly flow creating gusty winds
throughout the Matanuska Valley and the typical locations within
Prince William Sound. An upper level trough over the panhandle
will retrograde moving over Southcentral Alaska later this week.
Cool air aloft, dry conditions near the surface and weak winds are
setting the stage for future convective activity on the edge of
the trough near the Kenai Peninsula.

A front stalled over the Central Aleutians has brought light rain
and gusty winds to the area yesterday and continues today. This
front has started to weaken as the associated low, south of the
Western Aleutians, begins to fill and move westward.

&&

.MODEL DISCUSSION...
The models remain in excellent synoptic agreement through mid week
with the weak easterly wave that will begin to develop over the
southern Mainland by Wednesday. The models remain very consistent
that widespread snow will develop throughout the North Gulf Coast
during the day Wednesday, but continue to be in poor agreement in
whether this will bring any snowfall into Southcentral. As a
result POPs were increased significantly for the North Gulf Coast
with good confidence, while slight chance POPs were introduced in
Southcentral due to the risk of northerly moving showers into the
area - but with much lower confidence. At this point this is the
largest forecast concern from the models looking into the end of
this week, so forecast confidence is generally above average.

&&

.AVIATION...
PANC...VFR conditions will continue through Tuesday, with the
primary forecast challenge determining how quickly gusty northerly
winds will diminish this afternoon and evening. At this point it
appears that winds should fall below about 10 kt by early evening,
however with continued weak down inlet flow a few gusts above
that may still occur through the evening hours.

&&

.SHORT TERM FORECAST SOUTHCENTRAL ALASKA (Days 1 and 2)...
Offshore flow will strengthen a bit overnight through Tuesday
morning as an initial upper level trough digs south from interior
Alaska over the Alaska Range and pushes a colder air mass into
the Copper River Basin and northern Susitna Valley. The broader
upper level low centered over Yukon Territory and northern
British Columbia will move west, crossing Southcentral Alaska
Tuesday and Tuesday night and then move into Southwest Alaska
Wednesday as the piece of the upper trough/low over Southeast
Alaska swings east and inland. Southeasterly winds will increase
over the northern Gulf as this occurs with a small area of Gales
developing in the Barrier Jet region late Tuesday night through
Wednesday morning and pushing in Prince William Sound. Inland,
winds will remain more north to northeasterly with strong gusty
winds in the typical outflow gaps.

An easterly wave this time of year containing as much cold air
aloft as this one does presents an interesting forecast challenge.
In the summer this is the kind of pattern we would watch for
thunderstorm potential. While instability looks insufficient for
thunderstorms in this case, the system will bring more instability
with it than is typical for a snow shower scenario and certainly
more than is usual with southeasterly flow. This combination
brings the potential for heavy snow showers along eastern portions
of the Kenai Peninsula as well as for western Prince William
Sound Tuesday night and Wednesday, combined with strong east to
southeasterly winds. At lower elevations, potential storm total
snow accumulations range from 6 inches to a foot with 2 or 3 ft
possible in the higher mountains...especially those further to the
east - bordering Western Prince William Sound. Snowfall totals
will drop off rapidly as you move to the west with around 4 inches
possible in the Girdwood area and little to no accumulation
expected west of there.

&&

.SHORT TERM FORECAST SOUTHWEST ALASKA (Days 1 and 2)...
High pressure over the northern Bering will continue to support
dry offshore flow tonight, however a pattern change is in store
heading into the middle of the week as an Arctic shortwave helps
to amplify a retrograding upper low currently centered over the
Yukon. This feature will begin to move over Southwest Alaska on
Tuesday accompanied by colder temperatures and increasing cloud
cover. The chance for some snow showers will return by Wednesday
as upper level flow backs to the southwest and begins to advect
some moisture back into the region.

&&

.SHORT TERM FORECAST BERING SEA/ALEUTIANS (Days 1 and 2)...
Rain showers associated with a stationary frontal boundary draped
across the southwest half of the Bering will remain confined to
the Aleutian chain and gradually diminish from east to west over
the next 36 hours as the parent low dissipates south of Amchitka.
Meanwhile, clear skies over the eastern half of the Bering will
gradually be replaced by increasing cloud cover through the
middle of the week as the dominant ridge is finally pushed into
the Russian Arctic by the upper low moving over Southwest Alaska.
This will bring much colder temperatures aloft into the eastern
Bering, helping to once again increase freezing spray over the
coastal waters as surface flow remains offshore.

&&

.LONG TERM FORECAST (Days 4 through 7)...
The forecast period commences with an upper level low centered
over the Northern Bering with cyclonic flow spanning from Kamchatka
to Kodiak Island. There is also a second upper level low just
south of Shemya. As the forecast period unfolds, the low that had
been over the mainland will become absorbed into the longwave
pattern and cold air advection will have accompanied the remnants
of this easterly wave out into the Bering. Meanwhile, the low
south of the Western Aleutians will begin to push eastward across
the chain bringing gusty winds and rough seas to the region. The
ECMWF pings into storm force winds with this frontal boundary as
it pushes north of the chain and intensifies. While the GFS shows
a similar trajectory, it caps the winds off at gale force. Past
Sunday, the ECMWF and the GFS diverge significantly and the
confidence level in the forecast rapidly erodes.

&&

.AFC WATCHES/WARNINGS/ADVISORIES...
PUBLIC...None.
MARINE...Gale Warning 119 127.
         Heavy Freezing Spray Warning 180 181.

&&

SYNOPSIS AND MODEL DISCUSSION...DEK/RA
SOUTHCENTRAL ALASKA...JER
SOUTHWEST ALASKA/BERING SEA/ALEUTIANS...CB
LONG TERM...PS