Small Craft Advisory 1017, NWS Anchorage, AK

512 
FZAK52 PAFC 220310 AAA
CWFALU

COASTAL WATERS FORECAST...UPDATED
NATIONAL WEATHER SERVICE ANCHORAGE AK
610 PM AKST WED DEC 21 2016

COASTAL WATERS FORECAST FOR SOUTHWEST ALASKA+BRISTOL BAY+THE
ALASKA PENINSULA WATERS AND THE ALEUTIAN ISLANDS UP TO 100 NM OUT.

WIND FORECASTS REFLECT THE PREDOMINANT SPEED AND DIRECTION
EXPECTED. SEA FORECASTS REPRESENT AN AVERAGE OF THE HIGHEST
ONE-THIRD OF THE COMBINED WIND WAVE AND SWELL HEIGHT.

PKZ199-221615-
610 PM AKST WED DEC 21 2016
.SYNOPSIS FOR SOUTHWEST ALASKA+BRISTOL BAY+THE ALASKA
PENINSULA WATERS AND THE ALEUTIAN ISLANDS...

BOGOSLAV VOLCANO...53 NM WEST OF UNALASKA...IS CURRENTLY ACTIVE.
A 998 MB LOW 410 NM NORTHWEST OF ATTU MOVES TO 330 NM WEST OF ST
MATTHEW ISLAND AT 1007 MB AND DISSIPATES FRI AFTERNOON. THE
ASSOCIATED FRONT SLIDES INTO WESTERN ALASKA BY FRI AFTERNOON. A
981 MB NORTH PACIFIC LOW MOVES TO 180 NM SOUTH OF SEGUAM ISLAND 
BY FRI AFTERNOON.

$$

PKZ150-221615-
SOUTH OF THE AK PENINSULA SITKINAK TO CASTLE CAPE-
610 PM AKST WED DEC 21 2016

...GALE WARNING THROUGH THURSDAY...

.TONIGHT...NW WIND 35 KT. GUSTS TO 55 KT OUT OF BAYS AND PASSES. 
SEAS 14 FT. FREEZING SPRAY. 
.THU...NW WIND 35 KT. GUSTS TO 45 KT OUT OF BAYS AND PASSES
THROUGH THE MORNING. SEAS 11 FT. 
.THU NIGHT...NW WIND 30 KT DIMINISHING TO 20 KT AFTER MIDNIGHT.
SEAS 8 FT. 
.FRI...S WIND 25 KT. SEAS 6 FT. 
.FRI NIGHT...SE WIND 40 KT. SEAS 14 FT. 
.SAT...SE WIND 40 KT. SEAS 22 FT. 
.SUN...SW WIND 30 KT. SEAS 17 FT. 
.MON...SW WIND 35 KT. SEAS 18 FT.

$$

PKZ155-221615-
SOUTH OF THE AK PENINSULA CASTLE CAPE TO CAPE SARICHEF-
610 PM AKST WED DEC 21 2016

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

.TONIGHT...NW WIND 15 KT EXCEPT NW 25 KT FROM THE SHUMAGIN
ISLANDS E. SEAS 10 FT. 
.THU...W WIND 20 KT. SEAS 8 FT. 
.THU NIGHT...S WIND 20 KT. SEAS 8 FT. 
.FRI...SE WIND 45 KT. SEAS 14 FT. 
.FRI NIGHT...SE WIND 45 KT. SEAS 26 FT. 
.SAT...S WIND 40 KT. SEAS 24 FT. 
.SUN...SW WIND 35 KT. SEAS 22 FT. 
.MON...SW WIND 40 KT. SEAS 22 FT.

$$

PKZ160-221615-
BRISTOL BAY-
610 PM AKST WED DEC 21 2016

...HEAVY FREEZING SPRAY WARNING TONIGHT...
...SMALL CRAFT ADVISORY TONIGHT...

.TONIGHT...NW WIND 25 KT BECOMING N 15 KT AFTER MIDNIGHT.  SEAS
IN ICE FREE WATERS 7 FT SUBSIDING TO 4 FT AFTER MIDNIGHT. HEAVY
FREEZING SPRAY. 
.THU...N WIND 10 KT BECOMING S IN THE AFTERNOON. SEAS IN ICE 
FREE WATERS 3 FT. 
.THU NIGHT...SW WIND 20 KT. SEAS IN ICE FREE WATERS 6 FT. 
FREEZING SPRAY AND PATCHY FREEZING FOG. 
.FRI...SE WIND 20 KT. SEAS IN ICE FREE WATERS 6 FT. 
.FRI NIGHT...E WIND 40 KT. SEAS IN ICE FREE WATERS 8 FT. 
.SAT...SE WIND 40 KT. SEAS IN ICE FREE WATERS 9 FT. 
.SUN...S WIND 20 KT. SEAS IN ICE FREE WATERS 7 FT. 
.MON...S WIND 20 KT. SEAS IN ICE FREE WATERS 11 FT.

$$

PKZ165-221615-
PORT HEIDEN TO CAPE SARICHEF-
610 PM AKST WED DEC 21 2016

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

.TONIGHT...VARIABLE WIND 10 KT BECOMING S 15 KT AFTER MIDNIGHT.
FROM PORT MOLLER E...NW WIND 20 KT. SEAS 6 FT. 
.THU...SW WIND 25 KT. SEAS 7 FT. 
.THU NIGHT...W WIND 25 KT BECOMING SW 15 KT AFTER MIDNIGHT.  SEAS
8 FT. 
.FRI...SE WIND 40 KT. SEAS 9 FT. 
.FRI NIGHT...SE WIND 45 KT. SEAS 12 FT. 
.SAT...SE WIND 40 KT. SEAS 11 FT. 
.SUN THROUGH MON...SW WIND 30 KT. SEAS 18 FT.

$$

PKZ170-221615-
CAPE SARICHEF TO NIKOLSKI BERING SIDE-
610 PM AKST WED DEC 21 2016

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

.TONIGHT...SW WIND 15 KT INCREASING TO 25 KT AFTER MIDNIGHT. 
SEAS 7 FT. RAIN SHOWERS. 
.THU...W WIND 25 KT. SEAS 8 FT. 
.THU NIGHT...S WIND 15 KT BECOMING SE 30 KT AFTER MIDNIGHT.  SEAS
7 FT. 
.FRI AND FRI NIGHT...SE WIND 40 KT. SEAS 14 FT. 
.SAT...S WIND 30 KT. SEAS 9 FT. 
.SUN THROUGH MON...W WIND 35 KT. SEAS 22 FT.

$$

PKZ171-221615-
UNALASKA BAY-
610 PM AKST WED DEC 21 2016

...SMALL CRAFT ADVISORY THURSDAY NIGHT...

.TONIGHT...VARIABLE WIND LESS THAN 10 KT BECOMING SW 10 KT AFTER
MIDNIGHT. SEAS 2 FT. SNOW SHOWERS. 
.THU...W WIND 20 KT BECOMING SW 10 KT IN THE AFTERNOON. SEAS
3 FT. 
.THU NIGHT...S WIND 10 KT BECOMING SE 25 KT AFTER MIDNIGHT. SEAS
3 FT. 
.FRI AND FRI NIGHT...SE WIND 40 KT. SEAS 6 FT. 
.SAT...S WIND 20 KT. SEAS 2 FT. 
.SUN THROUGH MON...SW WIND 25 KT. SEAS 4 FT.

$$

PKZ172-221615-
CAPE SARICHEF TO NIKOLSKI PACIFIC SIDE-
610 PM AKST WED DEC 21 2016

...GALE WARNING THURSDAY NIGHT...

.TONIGHT...W WIND INCREASING TO 20 KT. SEAS 9 FT. 
.THU...W WIND 20 KT. SEAS 9 FT. 
.THU NIGHT...S WIND 20 KT BECOMING SE 35 KT AFTER MIDNIGHT.  SEAS
8 FT. 
.FRI AND FRI NIGHT...SE WIND 45 KT. SEAS 25 FT. 
.SAT...SW WIND 30 KT. SEAS 21 FT. 
.SUN THROUGH MON...W WIND 40 KT. SEAS 25 FT.

$$

PKZ173-221615-
NIKOLSKI TO SEGUAM ISLAND BERING SIDE-
610 PM AKST WED DEC 21 2016

...GALE WARNING THURSDAY NIGHT...

.TONIGHT...W WIND 25 KT. SEAS 9 FT. SNOW SHOWERS AND RAIN
SHOWERS. 
.THU...W WIND 20 KT. SEAS 9 FT. 
.THU NIGHT...SE WIND 25 KT INCREASING TO 35 KT AFTER MIDNIGHT.
SEAS 6 FT BUILDING TO 10 FT AFTER MIDNIGHT. SNOW AND RAIN. 
.FRI...E WIND 40 KT. SEAS 18 FT. 
.FRI NIGHT...S WIND 25 KT. SEAS 15 FT. 
.SAT...SW WIND 30 KT. SEAS 13 FT. 
.SUN THROUGH MON...W WIND 35 KT. SEAS 21 FT.

$$

PKZ174-221615-
NIKOLSKI TO SEGUAM ISLAND PACIFIC SIDE-
610 PM AKST WED DEC 21 2016

...GALE WARNING THURSDAY NIGHT...

.TONIGHT...W WIND 25 KT. SEAS 12 FT. 
.THU...W WIND 20 KT. SEAS 10 FT. 
.THU NIGHT...SE WIND 30 KT INCREASING TO 40 KT AFTER MIDNIGHT.
SEAS 8 FT BUILDING TO 13 FT AFTER MIDNIGHT. RAIN. 
.FRI...E WIND 45 KT. SEAS 25 FT. 
.FRI NIGHT...SW WIND 30 KT. SEAS 23 FT. 
.SAT...SW WIND 35 KT. SEAS 18 FT. 
.SUN THROUGH MON...W WIND 40 KT. SEAS 27 FT.

$$

PKZ175-221615-
SEGUAM ISLAND TO ADAK BERING SIDE-
610 PM AKST WED DEC 21 2016

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

.TONIGHT...W WIND 25 KT. SEAS 9 FT. SNOW SHOWERS. 
.THU...SW WIND 20 KT. SEAS 8 FT. 
.THU NIGHT...E WIND 30 KT. SEAS 10 FT. SNOW AND RAIN. 
.FRI...E WIND 35 KT. SEAS 15 FT. 
.FRI NIGHT...SW WIND 20 KT. SEAS 11 FT. 
.SAT...SW WIND 30 KT. SEAS 10 FT. 
.SUN...SW WIND 35 KT. SEAS 22 FT. 
.MON...W WIND 30 KT. SEAS 21 FT.

$$

PKZ176-221615-
SEGUAM ISLAND TO ADAK PACIFIC SIDE-
610 PM AKST WED DEC 21 2016

...GALE WARNING THURSDAY NIGHT...

.TONIGHT...W WIND 25 KT. SEAS 11 FT. 
.THU...SW WIND 15 KT BECOMING SE 25 KT IN THE AFTERNOON.  SEAS
8 FT. 
.THU NIGHT...SE WIND 30 KT BECOMING E 40 KT AFTER MIDNIGHT.  SEAS
11 FT BUILDING TO 18 FT AFTER MIDNIGHT. RAIN AND SNOW. 
.FRI...NE WIND 40 KT. SEAS 25 FT. 
.FRI NIGHT...SW WIND 25 KT. SEAS 19 FT. 
.SAT...SW WIND 40 KT. SEAS 20 FT. 
.SUN...SW WIND 40 KT. SEAS 29 FT. 
.MON...W WIND 35 KT. SEAS 26 FT.

$$

PKZ177-221615-
ADAK TO KISKA-
610 PM AKST WED DEC 21 2016

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

.TONIGHT...W WIND 25 KT. SEAS 10 FT. 
.THU...S WIND 15 KT BECOMING SE 25 KT IN THE AFTERNOON. SEAS
8 FT. 
.THU NIGHT...E WIND 30 KT. SEAS 10 FT BERING SIDE...17 FT PACIFIC
SIDE. RAIN AND SNOW. 
.FRI...NE WIND 25 KT. SEAS 17 FT. 
.FRI NIGHT...S WIND 30 KT. SEAS 14 FT. 
.SAT THROUGH SUN...W WIND 35 KT. SEAS 25 FT. 
.MON...W WIND 30 KT. SEAS 26 FT.

$$

PKZ178-221615-
KISKA TO ATTU-
610 PM AKST WED DEC 21 2016

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

.TONIGHT...W WIND 25 KT. SEAS 9 FT. SNOW SHOWERS. 
.THU...SW WIND 20 KT. SEAS 8 FT. SNOW. 
.THU NIGHT...N WIND 25 KT. SEAS 9 FT. 
.FRI...NE WIND 25 KT. SEAS 14 FT. 
.FRI NIGHT...E WIND 25 KT. SEAS 11 FT. 
.SAT THROUGH MON...NW WIND 30 KT. SEAS 21 FT.

$$

PKZ179-221615-
PRIBILOF ISLANDS NEAR SHORE WATERS-
610 PM AKST WED DEC 21 2016

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

.TONIGHT...S WIND 10 KT IN THE EVENING INCREASING TO 20 KT.  SEAS
BUILDING TO 6 FT. SNOW SHOWERS AND RAIN SHOWERS. 
.THU...W WIND 25 KT. SEAS 9 FT. 
.THU NIGHT...SW WIND 20 KT. SEAS 8 FT. 
.FRI...SE WIND 35 KT. SEAS 11 FT. 
.FRI NIGHT...SE WIND 35 KT. SEAS 15 FT. 
.SAT...SE WIND 25 KT. SEAS 13 FT. 
.SUN...SW WIND 20 KT. SEAS 19 FT. 
.MON...W WIND 25 KT. SEAS 19 FT.

$$

PKZ180-221615-
KUSKOKWIM DELTA AND ETOLIN STRAIT-
610 PM AKST WED DEC 21 2016

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

.TONIGHT...SW WIND INCREASING TO 20 KT...EXCEPT NW 10 KT S OF 
CAPE NEWENHAM. SEAS IN ICE FREE WATERS 4 FT. FREEZING SPRAY  AND
PATCHY FREEZING FOG. 
.THU...S WIND 25 KT. SEAS IN ICE FREE WATERS 5 FT. SNOW SHOWERS. 
.THU NIGHT...W WIND 25 KT BECOMING SW 15 KT AFTER MIDNIGHT.  SEAS
IN ICE FREE WATERS 8 FT. PATCHY FREEZING FOG. 
.FRI...SE WIND 25 KT. SEAS IN ICE FREE WATERS 6 FT. 
.FRI NIGHT...SE WIND 40 KT. SEAS IN ICE FREE WATERS 13 FT. 
.SAT...SE WIND 40 KT. SEAS IN ICE FREE WATERS 14 FT. 
.SUN...SE WIND 25 KT. SEAS IN ICE FREE WATERS 10 FT. 
.MON...S WIND 25 KT. SEAS IN ICE FREE WATERS 13 FT.

$$

PKZ181-221615-
NORTH AND WEST OF NUNIVAK ISLAND-
610 PM AKST WED DEC 21 2016

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

.TONIGHT...SW WIND INCREASING TO 20 KT. SEAS IN ICE FREE WATERS 
5 FT. FREEZING SPRAY AND PATCHY FREEZING FOG. 
.THU...S WIND 25 KT. SEAS IN ICE FREE WATERS 5 FT. 
.THU NIGHT...SW WIND 25 KT. SEAS IN ICE FREE WATERS 6 FT. 
.FRI...S WIND 25 KT. SEAS IN ICE FREE WATERS 6 FT. 
.FRI NIGHT...E WIND 40 KT. SEAS IN ICE FREE WATERS 11 FT. 
.SAT...E WIND 35 KT. SEAS IN ICE FREE WATERS 12 FT. 
.SUN...E WIND 25 KT. SEAS IN ICE FREE WATERS 9 FT. 
.MON...NE WIND 20 KT. SEAS IN ICE FREE WATERS 10 FT.

$$

PKZ185-221615-
SAINT MATTHEW ISLAND WATERS-
610 PM AKST WED DEC 21 2016

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

.TONIGHT...S WIND 20 KT. SEAS 5 FT. 
.THU...SW WIND 25 KT. SEAS 5 FT. 
.THU NIGHT...W WIND 25 KT. SEAS 7 FT. 
.FRI...SE WIND 25 KT. SEAS 7 FT. 
.FRI NIGHT...E WIND 35 KT. SEAS 12 FT. 
.SAT...E WIND 40 KT. SEAS 17 FT. 
.SUN...NE WIND 35 KT. SEAS 17 FT. 
.MON...N WIND 30 KT. SEAS 16 FT.

$$

604 
FZAK52 PAFC 221210
CWFALU

COASTAL WATERS FORECAST
NATIONAL WEATHER SERVICE ANCHORAGE ALASKA
310 AM AKST THU DEC 22 2016

COASTAL WATERS FORECAST FOR SOUTHWEST ALASKA+BRISTOL BAY+THE
ALASKA PENINSULA WATERS AND THE ALEUTIAN ISLANDS UP TO 100 NM OUT.

WIND FORECASTS REFLECT THE PREDOMINANT SPEED AND DIRECTION
EXPECTED. SEA FORECASTS REPRESENT AN AVERAGE OF THE HIGHEST
ONE-THIRD OF THE COMBINED WIND WAVE AND SWELL HEIGHT.

PKZ199-230130-
310 AM AKST THU DEC 22 2016
.SYNOPSIS FOR SOUTHWEST ALASKA+BRISTOL BAY+THE ALASKA
PENINSULA WATERS AND THE ALEUTIAN ISLANDS...

A FRONT IN THE CENTRAL BERING MOVES INLAND OVER WESTERN MAINLAND
ALASKA THIS EVENING. A 987 MB NORTH PACIFIC LOW MOVES TO 330 NM
SOUTH OF ATKA AT 980 MB LATE TONIGHT...THEN MOVES TO 110 NM WEST
OF DUTCH HARBOR FRI NIGHT AND WEAKENS INTO A TROUGH. A 962 MB
NORTH PACIFIC LOW MOVES TO 120 NM SOUTHEAST OF SHEMYA AT 965 MB
LATE FRI NIGHT.

$$

PKZ150-230130-
SOUTH OF THE AK PENINSULA SITKINAK TO CASTLE CAPE-
310 AM AKST THU DEC 22 2016

...GALE WARNING TODAY...

.TODAY...NW WIND 35 KT. SEAS 11 FT. FREEZING SPRAY.
.TONIGHT...NW WIND 30 KT DIMINISHING TO 20 KT AFTER MIDNIGHT. SEAS
9 FT.
.FRI...NW WIND 15 KT BECOMING SE 25 KT IN THE AFTERNOON.
SEAS 6 FT.
.FRI NIGHT...SE WIND 40 KT. SEAS 16 FT.
.SAT...SE WIND 40 KT. SEAS 22 FT.
.SUN...SW WIND 30 KT. SEAS 19 FT.
.MON...W WIND 40 KT. SEAS 19 FT.

$$

PKZ155-230130-
SOUTH OF THE AK PENINSULA CASTLE CAPE TO CAPE SARICHEF-
310 AM AKST THU DEC 22 2016

...GALE WARNING FRIDAY...

.TODAY...W WIND 20 KT. SEAS 8 FT.
.TONIGHT...W WIND 15 KT BECOMING S AFTER MIDNIGHT. FROM THE
SHUMAGIN ISLANDS E...W WIND 15 KT. SEAS 7 FT.
.FRI...SE WIND 20 KT INCREASING TO 45 KT IN THE AFTERNOON...SEAS
7 FT BUILDING TO 16 FT IN THE AFTERNOON. FROM THE SHUMAGIN ISLANDS
E...SE WIND 20 KT INCREASING TO 35 KT IN THE AFTERNOON...SEAS 8
FT. RAIN.
.FRI NIGHT...SE WIND 45 KT. SEAS 25 FT.
.SAT...S WIND 40 KT. SEAS 23 FT.
.SUN...SW WIND 35 KT. SEAS 23 FT.
.MON...W WIND 40 KT. SEAS 21 FT.

$$

PKZ160-230130-
BRISTOL BAY-
310 AM AKST THU DEC 22 2016

.TODAY...N WIND 10 KT BECOMING S IN THE AFTERNOON. SEAS IN ICE
FREE WATERS 3 FT.
.TONIGHT...SW WIND 20 KT. SEAS IN ICE FREE WATERS 5 FT.
.FRI...S WIND 10 KT BECOMING E 20 KT IN THE AFTERNOON. SEAS IN ICE
FREE WATERS 5 FT.
.FRI NIGHT...E WIND 35 KT. SEAS IN ICE FREE WATERS 8 FT.
.SAT...E WIND 40 KT. SEAS IN ICE FREE WATERS 9 FT.
.SUN...S WIND 25 KT. SEAS IN ICE FREE WATERS 6 FT.
.MON...SW WIND 30 KT. SEAS IN ICE FREE WATERS 11 FT.

$$

PKZ165-230130-
PORT HEIDEN TO CAPE SARICHEF-
310 AM AKST THU DEC 22 2016

...GALE WARNING FRIDAY...

.TODAY...SW WIND 20 KT. SEAS 7 FT.
.TONIGHT...W WIND 20 KT. SEAS 7 FT.
.FRI...SE WIND 25 KT INCREASING TO 40 KT IN THE AFTERNOON. FROM
PORT MOLLER E...SE WIND 20 KT INCREASING TO 30 KT IN THE
AFTERNOON. SEAS 9 FT. RAIN.
.FRI NIGHT...SE WIND 40 KT. SEAS 11 FT.
.SAT...SE WIND 40 KT. SEAS 10 FT.
.SUN...SW WIND 30 KT. SEAS 15 FT.
.MON...W WIND 40 KT. SEAS 17 FT.

$$

PKZ170-230130-
CAPE SARICHEF TO NIKOLSKI BERING SIDE-
310 AM AKST THU DEC 22 2016

...GALE WARNING FRIDAY...

.TODAY...W WIND 25 KT. SEAS 8 FT.
.TONIGHT...S WIND 15 KT BECOMING SE 30 KT AFTER MIDNIGHT. SEAS 7
FT.
.FRI...SE WIND 40 KT. SEAS 8 FT BUILDING TO 13 FT IN THE
AFTERNOON. RAIN.
.FRI NIGHT...SE WIND 40 KT. SEAS 13 FT.
.SAT...S WIND 30 KT. SEAS 11 FT.
.SUN...SW WIND 35 KT. SEAS 17 FT.
.MON...W WIND 40 KT. SEAS 19 FT.

$$

PKZ171-230130-
UNALASKA BAY-
310 AM AKST THU DEC 22 2016

...GALE WARNING FRIDAY...

.TODAY...W WIND 20 KT BECOMING SW 10 KT IN THE AFTERNOON. SEAS 3
FT.
.TONIGHT...S WIND 10 KT BECOMING SE 25 KT AFTER MIDNIGHT. SEAS 2
FT BUILDING TO 4 FT AFTER MIDNIGHT.
.FRI...SE WIND 40 KT. SEAS 6 FT. RAIN.
.FRI NIGHT...SE WIND 40 KT. SEAS 6 FT.
.SAT...S WIND 20 KT. SEAS 2 FT.
.SUN...SW WIND 25 KT. SEAS 4 FT.
.MON...W WIND 30 KT. SEAS 5 FT.

$$

PKZ172-230130-
CAPE SARICHEF TO NIKOLSKI PACIFIC SIDE-
310 AM AKST THU DEC 22 2016

...GALE WARNING TONIGHT AND FRIDAY...

.TODAY...W WIND 20 KT. SEAS 9 FT.
.TONIGHT...S WIND 20 KT BECOMING SE 35 KT AFTER MIDNIGHT. SEAS 8
FT.
.FRI...SE WIND 45 KT. SEAS 15 FT BUILDING TO 24 FT IN THE
AFTERNOON. RAIN.
.FRI NIGHT...SE WIND 45 KT. SEAS 26 FT.
.SAT THROUGH MON...W WIND 40 KT. SEAS 24 FT.

$$

PKZ173-230130-
NIKOLSKI TO SEGUAM ISLAND BERING SIDE-
310 AM AKST THU DEC 22 2016

...GALE WARNING TONIGHT AND FRIDAY...

.TODAY...W WIND 20 KT. SEAS 9 FT.
.TONIGHT...SE WIND 25 KT INCREASING TO 35 KT AFTER MIDNIGHT. SEAS
6 FT BUILDING TO 10 FT AFTER MIDNIGHT. RAIN.
.FRI...E WIND 40 KT. SEAS 16 FT. RAIN.
.FRI NIGHT...S WIND 25 KT. SEAS 15 FT.
.SAT...SW WIND 30 KT. SEAS 15 FT.
.SUN THROUGH MON...W WIND 35 KT. SEAS 18 FT.

$$

PKZ174-230130-
NIKOLSKI TO SEGUAM ISLAND PACIFIC SIDE-
310 AM AKST THU DEC 22 2016

...GALE WARNING TONIGHT AND FRIDAY...

.TODAY...W WIND 20 KT. SEAS 10 FT.
.TONIGHT...SE WIND 30 KT INCREASING TO 40 KT AFTER MIDNIGHT. SEAS
8 FT BUILDING TO 14 FT AFTER MIDNIGHT. RAIN.
.FRI...E WIND 45 KT. SEAS 24 FT. RAIN.
.FRI NIGHT...SW WIND 25 KT. SEAS 22 FT.
.SAT THROUGH SUN...W WIND 40 KT. SEAS 28 FT.
.MON...W WIND 40 KT. SEAS 22 FT.

$$

PKZ175-230130-
SEGUAM ISLAND TO ADAK BERING SIDE-
310 AM AKST THU DEC 22 2016

...GALE WARNING FRIDAY...

.TODAY...SW WIND 20 KT. SEAS 8 FT.
.TONIGHT...E WIND 30 KT. SEAS 10 FT. RAIN.
.FRI...E WIND 35 KT. SEAS 13 FT. RAIN.
.FRI NIGHT...S WIND 20 KT. SEAS 11 FT.
.SAT...SW WIND 35 KT. SEAS 12 FT.
.SUN THROUGH MON...W WIND 30 KT. SEAS 17 FT.

$$

PKZ176-230130-
SEGUAM ISLAND TO ADAK PACIFIC SIDE-
310 AM AKST THU DEC 22 2016

...GALE WARNING TONIGHT AND FRIDAY...

.TODAY...SW WIND 15 KT BECOMING SE 25 KT IN THE AFTERNOON. SEAS
8 FT.
.TONIGHT...E WIND 40 KT. SEAS 11 FT BUILDING TO 17 FT AFTER
MIDNIGHT. RAIN.
.FRI...E WIND 40 KT BECOMING N 25 KT IN THE AFTERNOON. SEAS 22 FT.
.FRI NIGHT...SW WIND 25 KT. SEAS 18 FT.
.SAT THROUGH SUN...W WIND 40 KT. SEAS 27 FT.
.MON...W WIND 35 KT. SEAS 22 FT.

$$

PKZ177-230130-
ADAK TO KISKA-
310 AM AKST THU DEC 22 2016

...SMALL CRAFT ADVISORY THROUGH FRIDAY...

.TODAY...S WIND 15 KT BECOMING SE 25 KT IN THE AFTERNOON. SEAS 8
FT. RAIN.
.TONIGHT...E WIND 30 KT. SEAS 9 FT BERING SIDE...16 FT PAC SIDE.
RAIN.
.FRI...NE WIND 20 KT. SEAS 10 FT BERING SIDE... 18 FT PAC SIDE.
.FRI NIGHT...S WIND 30 KT. SEAS 15 FT.
.SAT THROUGH SUN...W WIND 35 KT. SEAS 22 FT.
.MON...W WIND 30 KT. SEAS 21 FT.

$$

PKZ178-230130-
KISKA TO ATTU-
310 AM AKST THU DEC 22 2016

...SMALL CRAFT ADVISORY THROUGH FRIDAY...

.TODAY...SW WIND 20 KT IN THE MORNING BECOMING VARIABLE 10 KT.
SEAS 8 FT. SNOW.
.TONIGHT...N WIND 25 KT. SEAS 8 FT. RAIN.
.FRI...N WIND 25 KT. SEAS 11 FT. SNOW WITH RAIN.
.FRI NIGHT...E WIND 25 KT. SEAS 11 FT.
.SAT THROUGH SUN...NW WIND 30 KT. SEAS 20 FT.
.MON...W WIND 25 KT. SEAS 21 FT.

$$

PKZ179-230130-
PRIBILOF ISLANDS NEAR SHORE WATERS-
310 AM AKST THU DEC 22 2016

...SMALL CRAFT ADVISORY THROUGH FRIDAY...

.TODAY...W WIND 25 KT. SEAS 9 FT.
.TONIGHT...SW WIND 20 KT. SEAS 8 FT.
.FRI...SE WIND 30 KT. SEAS 7 FT BUILDING TO 11 FT IN THE
AFTERNOON. WIDESPREAD RAIN SHOWERS.
.FRI NIGHT...SE WIND 35 KT. SEAS 15 FT.
.SAT...SE WIND 30 KT. SEAS 14 FT.
.SUN THROUGH MON...W WIND 30 KT. SEAS 17 FT.

$$

PKZ180-230130-
KUSKOKWIM DELTA AND ETOLIN STRAIT-
310 AM AKST THU DEC 22 2016

...SMALL CRAFT ADVISORY FRIDAY...

.TODAY...S WIND 20 KT. SEAS IN ICE FREE WATERS 6 FT. SNOW SHOWERS.
.TONIGHT...W WIND 20 KT. SEAS IN ICE FREE WATERS 7 FT.
.FRI...S WIND 15 KT BECOMING SE 25 KT IN THE AFTERNOON. SEAS IN
ICE FREE WATERS 6 FT.
.FRI NIGHT...SE WIND 40 KT. SEAS IN ICE FREE WATERS 13 FT.
.SAT...SE WIND 40 KT. SEAS IN ICE FREE WATERS 14 FT.
.SUN...SE WIND 30 KT. SEAS IN ICE FREE WATERS 9 FT.
.MON...SW WIND 30 KT. SEAS IN ICE FREE WATERS 13 FT.

$$

PKZ181-230130-
NORTH AND WEST OF NUNIVAK ISLAND-
310 AM AKST THU DEC 22 2016

...SMALL CRAFT ADVISORY THROUGH FRIDAY...

.TODAY...S WIND 25 KT. SEAS IN ICE FREE WATERS 5 FT.
.TONIGHT...SW WIND 25 KT. SEAS IN ICE FREE WATERS 6 FT.
.FRI...S WIND 15 KT BECOMING SE 25 KT IN THE AFTERNOON. SEAS IN
ICE FREE WATERS 6 FT.
.FRI NIGHT...E WIND 35 KT. SEAS IN ICE FREE WATERS 11 FT.
.SAT...E WIND 40 KT. SEAS IN ICE FREE WATERS 12 FT.
.SUN...E WIND 30 KT. SEAS IN ICE FREE WATERS 9 FT.
.MON...NE WIND 20 KT. SEAS IN ICE FREE WATERS 10 FT.

$$

PKZ185-230130-
SAINT MATTHEW ISLAND WATERS-
310 AM AKST THU DEC 22 2016

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

.TODAY...SW WIND 25 KT. SEAS 6 FT.
.TONIGHT...SW WIND 20 KT. SEAS 7 FT.
.FRI...S WIND 15 KT BECOMING E 25 KT IN THE AFTERNOON. SEAS 7 FT.
.FRI NIGHT...E WIND 35 KT. SEAS 13 FT.
.SAT THROUGH SUN...NE WIND 40 KT. SEAS 20 FT.
.MON...N WIND 30 KT. SEAS 15 FT.

$$

Southcentral and Southwest Alaska Forecast Discussion
National Weather Service Anchorage AK
451 AM AKST Wed Dec 21 2016

.ANALYSIS AND UPPER LEVELS...

An upper level trough extends south across the AK mainland this
morning, with a building upper ridge over much of the Bering. At
the base of the mainland AK trough is the beginning of a closed
off low that will move over the Gulf later today. Currently the
upper low is over southwest AK and producing areas of snow over the
Bristol Bay region. Snow showers are also moving into portions of
Southcentral ahead of the Bristol Bay feature, on southwest flow
aloft. At the surface a low is consolidating over the northern
Gulf of AK, while the Bering is covered with weak low pressure.

&&

.MODEL DISCUSSION...

Models are in good agreement, with the low continuing to
consolidate over the northern Gulf through tonight before drifting
southeast through Thu night. A north Pacific ridge will build into
the void left by the departing low, reaching into the Bering Thu
and southwest AK Thu night into Fri. A weak low developing in the
northern Bering later today will remain north of the forecast
area. To the west of the ridge the next north Pacific low will
begin to affect the western and central Aleutians beginning on
Thu.

&&

.AVIATION...
PANC...An upper level low consolidating over Southwest AK this
morning is sending a trough northeast in the direction of
Anchorage. This is spreading snow showers to the west of the
airport, but also providing enough mixing to begin clearing fog
from the area. This should continue through the early morning. VFR
conditions are expected by midday and should persist through Thu
morning.

&&

.SHORT TERM FORECAST SOUTHCENTRAL ALASKA (Days 1 and 2)...
Broad southerly flow aloft and surface lows moving north into the
northern Gulf will continue the threat of Snow and snow showers
today, heaviest along the North Gulf Coast, and to a lesser extent
inland. That said, the NAM is trying to develop a deformation
band which extends north into the Copper River Basin this
afternoon. This may be a little overdone, but bears watching.
Areas of fog across the Anchorage Bowl, Knik Arm, and into
portions of the MAT Valley should dissipate by afternoon and not
make a reappearance tonight. The ridge builds in behind the upper
level trough late tonight/early Thu bringing clearing and cooler
conditions. Pressure gradients will also increase tonight and Thu
signaling the onset of brisk outflow conditions, strongest across
the eastern Kenai Pen, western Gulf, and North Gulf Coast. These
conditions should continue into Thu night. The biggest concern
with this change is for Thompson Pass and the stronger winds
blowing around any loose snow beginning Thu.

&&

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

A cold upper trough continues to remain over the region, with a
rather impressive embedded surface low situated over the far
eastern portion of Bristol Bay. Low level convergence along this
boundary is sufficiently strong to support an area of accumulating
snowfall. With northerly cold advection winds behind this front,
expect some areas of local blowing snow from Dillingham east today
before winds diminish. High pressure builds in tonight and will
support the coldest temperatures in a while before another weak
shortwave trough spreads in clouds and snow chances Thursday night
and Friday.

&&

.SHORT TERM FORECAST BERING SEA/ALEUTIANS (Days 1 and 2)...

Quiet weather after the very active storm cycle of the last week
will continue as weak upper ridging moves across the Bering Sea
ahead of a weak upper level trough. Broad westerly flow behind
this feature will support rather widespread rain and snow showers
over the Bering Sea as it moves east through Thursday. Thereafter,
a deepening North Pacific low will move into the Western and
Central Bering Sea Thursday night, bringing with it gale force
east-southeast winds.

&&

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

Outflow winds will be the big issue Thursday night into the early
weekend as high pressure settles over inland areas from the west
and low pressure in the southeastern Gulf continues moving
southeast and away from the region. Attention then turns to a
series of systems that will move northeast into the Bering toward
the mainland, but will encounter resistance from downstream
ridging and eventually result in a west-east longwave trough and
surface-front orientation from the Bering to the Gulf by early
next week. While there is good synoptic agreement in this pattern
occurring, the devil will be in the details of the individual
systems that develop along this frontal boundary.

&&

.AFC WATCHES/WARNINGS/ADVISORIES...
PUBLIC...None.
MARINE...Gales 130- 132 138 150.

&&

SYNOPSIS AND MODEL DISCUSSION...DS
SOUTHCENTRAL ALASKA...RMC
SOUTHWEST ALASKA/BERING SEA/ALEUTIANS...JA
LONG TERM...CC