Gale Warning 639, NWS Anchorage, AK

813 
FZAK61 PAFC 252323
OFFAER

OFFSHORE WATERS FORECAST
NATIONAL WEATHER SERVICE ANCHORAGE AK
400 PM AKDT THU OCT 25 2012

OFFSHORE WATERS FORECAST FOR THE GULF OF ALASKA WEST OF 144W

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.

PKZ399-261500-
400 PM AKDT THU OCT 25 2012
.SYNOPSIS FOR THE WESTERN GULF OF ALASKA...
A SERIES OF FRONTS OVER THE NORTHEAST PACIFIC WILL APPROACH 
THE SOUTHERN GULF THROUGH SAT.

$$

PKZ351-261500-
GULF OF ALASKA OFFSHORE NORTH OF 57N AND WEST OF 144W
400 PM AKDT THU OCT 25 2012

.TONIGHT...E WIND 20 KT. SEAS 7 FT. 
.FRI...E WIND 20 KT. SEAS 8 FT. 
.FRI NIGHT AND SAT...E WIND 25 KT. SEAS 8 FT. 
.SAT NIGHT AND SUN...NE WIND 25 KT. SEAS 10 FT. 
.MON...W WIND 15 KT. SEAS 6 FT. 
.TUE...W WIND 20 KT. SEAS 7 FT.  

$$

PKZ352-261500-
GULF OF ALASKA OFFSHORE SOUTH OF 57N NORTH OF 55N AND WEST OF
144W
400 PM AKDT THU OCT 25 2012

...GALE WARNING FRIDAY AND FRIDAY NIGHT...

.TONIGHT...E WIND 20 TO 30 KT. SEAS 8 TO 12 FT. 
.FRI...E WIND 25 TO 35 KT. SEAS 10 TO 15 FT. 
.FRI NIGHT AND SAT...E WIND 30 TO 40 KT. SEAS 12 TO 16 FT. 
.SAT NIGHT...NE WIND 35 KT. SEAS 15 FT. 
.SUN...NE WIND 30 KT. SEAS 13 FT. 
.MON...N WIND 20 KT. SEAS 8 FT. 
.TUE...W WIND 20 KT. SEAS 8 FT.  

$$

509 
FZAK61 PAFC 261135
OFFAER

OFFSHORE WATERS FORECAST
NATIONAL WEATHER SERVICE ANCHORAGE AK
400 AM AKDT FRI OCT 26 2012

OFFSHORE WATERS FORECAST FOR THE GULF OF ALASKA WEST OF 144W

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.

PKZ399-270300-
400 AM AKDT FRI OCT 26 2012
.SYNOPSIS FOR THE WESTERN GULF OF ALASKA...

A WEATHER FRONT WILL STALL ACROSS THE SOUTHWEST GULF THROUGH LATE
SATURDAY NIGHT.

$$

PKZ351-270300-
GULF OF ALASKA OFFSHORE NORTH OF 57N AND WEST OF 144W
400 AM AKDT FRI OCT 26 2012

.TODAY...E WIND 20 KT. SEAS 7 FT. 
.TONIGHT...E WIND 20 KT. SEAS 8 FT. 
.SAT AND SAT NIGHT...E WIND 25 KT. SEAS 9 FT. 
.SUN...NE WIND 20 KT. SEAS 8 FT. 
.MON...W WIND 15 KT. SEAS 6 FT. 
.TUE...W WIND 25 KT. SEAS 8 FT.  

$$

PKZ352-270300-
GULF OF ALASKA OFFSHORE SOUTH OF 57N NORTH OF 55N AND WEST OF
144W
400 AM AKDT FRI OCT 26 2012

...GALE WARNING THROUGH SATURDAY...

.TODAY...E WIND 35 KT. SEAS 12 FT. 
.TONIGHT...E WIND 40 KT. SEAS 13 FT. 
.SAT...E WIND 40 KT. SEAS 14 FT. 
.SAT NIGHT...E WIND 35 KT. SEAS 12 FT. 
.SUN...NE WIND 30 KT. SEAS 12 FT. 
.MON...W WIND 15 KT. SEAS 8 FT. 
.TUE...W WIND 20 KT. SEAS 8 FT.  

$$

724 
FZAK61 PAFC 261434 AAA
OFFAER

OFFSHORE WATERS FORECAST...UPDATED
NATIONAL WEATHER SERVICE ANCHORAGE AK
635 AM AKDT FRI OCT 26 2012

OFFSHORE WATERS FORECAST FOR THE GULF OF ALASKA WEST OF 144W

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.

PKZ399-270300-
400 AM AKDT FRI OCT 26 2012
.SYNOPSIS FOR THE WESTERN GULF OF ALASKA...

A WEATHER FRONT WILL STALL ACROSS THE SOUTHWEST GULF THROUGH LATE
SATURDAY NIGHT.

$$

PKZ351-270300-
GULF OF ALASKA OFFSHORE NORTH OF 57N AND WEST OF 144W
635 AM AKDT FRI OCT 26 2012

.TODAY...E WIND 10 TO 20 KT. SEAS 7 FT. 
.TONIGHT...NE WIND 10 TO 20 KT. SEAS 8 FT. 
.SAT AND SAT NIGHT...NE WIND 15 TO 25 KT. SEAS 9 FT. 
.SUN...VARIABLE WIND 10 KT. SEAS 7 FT. 
.MON...W WIND 15 KT. SEAS 6 FT. 
.TUE...W WIND 25 KT. SEAS 8 FT.  

$$

PKZ352-270300-
GULF OF ALASKA OFFSHORE SOUTH OF 57N NORTH OF 55N AND WEST OF
144W
635 AM AKDT FRI OCT 26 2012

...GALE WARNING THROUGH TONIGHT...

.TODAY...E WIND 20 TO 35 KT...STRONGEST W OF 150W. 
SEAS 8 TO 12 FT. 
.TONIGHT...NE WIND 20 TO 35 KT...STRONGEST W OF 150W. 
SEAS 9 TO 13 FT. 
.SAT AND SAT NIGHT...NE WIND 20 TO 30 KT. SEAS 8 TO 12 FT. 
.SUN...NE WIND 20 KT. SEAS 8 FT. 
.MON...W WIND 15 KT. SEAS 7 FT. 
.TUE...W WIND 20 KT. SEAS 7 FT.  

$$

254 
FZAK61 PAFC 262317
OFFAER

OFFSHORE WATERS FORECAST
NATIONAL WEATHER SERVICE ANCHORAGE AK
400 PM AKDT FRI OCT 26 2012

OFFSHORE WATERS FORECAST FOR THE GULF OF ALASKA WEST OF 144W

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.

PKZ399-271500-
400 PM AKDT FRI OCT 26 2012
.SYNOPSIS FOR THE WESTERN GULF OF ALASKA...
A STRONG WEATHER FRONT WILL STALL ACROSS THE SOUTHWEST GULF THROUGH
LATE SATURDAY NIGHT.

$$

PKZ351-271500-
GULF OF ALASKA OFFSHORE NORTH OF 57N AND WEST OF 144W
400 PM AKDT FRI OCT 26 2012

.TONIGHT...E WIND 15 TO 25 KT. SEAS 8 FT. 
.SAT AND SUN...E WIND 15 TO 25 KT. SEAS 8 FT. 
.SUN NIGHT...NW WIND 15 KT. SEAS 8 FT. 
.MON...W WIND 15 KT. SEAS 6 FT. 
.TUE...W WIND 25 KT. SEAS 7 FT. 
.WED...NW WIND 20 KT. SEAS 7 FT.  

$$

PKZ352-271500-
GULF OF ALASKA OFFSHORE SOUTH OF 57N NORTH OF 55N AND WEST OF
144W
400 PM AKDT FRI OCT 26 2012

...GALE WARNING THROUGH SATURDAY...

.TONIGHT...E WIND 25 TO 35 KT. SEAS 9 TO 13 FT. 
.SAT...E WIND 25 TO 35 KT. SEAS 9 TO 13 FT. 
.SAT NIGHT...E WIND 30 KT. SEAS 8 TO 12 FT. 
.SUN...E WIND 25 KT. SEAS 11 FT. 
.SUN NIGHT...NE WIND 25 KT. SEAS 10 FT. 
.MON...W WIND 15 KT. SEAS 7 FT. 
.TUE...W WIND 20 KT. SEAS 8 FT. 
.WED...NW WIND 20 KT. SEAS 7 FT.  

$$

944 
FZAK61 PAFC 271128
OFFAER

OFFSHORE WATERS FORECAST
NATIONAL WEATHER SERVICE ANCHORAGE AK
400 AM AKDT SAT OCT 27 2012

OFFSHORE WATERS FORECAST FOR THE GULF OF ALASKA WEST OF 144W

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.

PKZ399-280300-
400 AM AKDT SAT OCT 27 2012
.SYNOPSIS FOR THE WESTERN GULF OF ALASKA...
A STRONG WEATHER FRONT WILL REMAIN NEARLY STATIONARY ACROSS THE
SOUTHWEST GULF TODAY AND THEN SLOWLY WEAKEN TONIGHT THROUGH SUNDAY. A
1015 MB LOW WILL DEVELOP NEAR 58N 150W EARLY MONDAY MORNING.
$$

PKZ351-280300-
GULF OF ALASKA OFFSHORE NORTH OF 57N AND WEST OF 144W
400 AM AKDT SAT OCT 27 2012

.TODAY...E WIND 20 KT. SEAS 7 FT. 
.TONIGHT...E WIND 20 KT. SEAS 7 FT. 
.SUN...NE WIND 15 KT. SEAS 7 FT. 
.SUN NIGHT...VARIABLE WIND 15 KT. SEAS 7 FT. 
.MON...SW WIND 25 KT. SEAS 9 FT. 
.TUE...W WIND 25 KT. SEAS 9 FT. 
.WED...N WIND 20 KT. SEAS 7 FT.  

$$

PKZ352-280300-
GULF OF ALASKA OFFSHORE SOUTH OF 57N NORTH OF 55N AND WEST OF
144W
400 AM AKDT SAT OCT 27 2012

...GALE WARNING TODAY...

.TODAY...E WIND 35 KT. SEAS 14 FT. 
.TONIGHT...E WIND 30 KT. SEAS 13 FT. 
.SUN...E WIND 25 KT. SEAS 10 FT. 
.SUN NIGHT...NE WIND 20 KT. SEAS 9 FT. 
.MON AND TUE...W WIND 25 KT. SEAS 9 FT. 
.WED...NW WIND 20 KT. SEAS 8 FT.  

$$

699 
FZAK61 PAFC 271425 AAA
OFFAER

OFFSHORE WATERS FORECAST...UPDATED
NATIONAL WEATHER SERVICE ANCHORAGE AK
625 AM AKDT SAT OCT 27 2012

OFFSHORE WATERS FORECAST FOR THE GULF OF ALASKA WEST OF 144W

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.

PKZ399-280300-
400 AM AKDT SAT OCT 27 2012
.SYNOPSIS FOR THE WESTERN GULF OF ALASKA...
A STRONG WEATHER FRONT WILL REMAIN NEARLY STATIONARY ACROSS THE
SOUTHWEST GULF TODAY AND THEN SLOWLY WEAKEN TONIGHT THROUGH SUNDAY. 
A 1015 MB LOW WILL DEVELOP NEAR 58N 150W EARLY MONDAY MORNING.
$$

PKZ351-280300-
GULF OF ALASKA OFFSHORE NORTH OF 57N AND WEST OF 144W
625 AM AKDT SAT OCT 27 2012

.TODAY...NE WIND 15 KT. SEAS 7 FT. 
.TONIGHT THROUGH SUN NIGHT...VARIABLE WIND 10 KT. SEAS 6 FT. 
.MON...SW WIND 25 KT. SEAS 9 FT. 
.TUE...W WIND 25 KT. SEAS 9 FT. 
.WED...N WIND 20 KT. SEAS 7 FT.  

$$

PKZ352-280300-
GULF OF ALASKA OFFSHORE SOUTH OF 57N NORTH OF 55N AND WEST OF 144W
625 AM AKDT SAT OCT 27 2012

...GALE WARNING TODAY...

.TODAY...E WIND 25 TO 35 KT BECOMING NE 15 TO 30 KT 
IN THE AFTERNOON. SEAS 8 TO 14 FT. 
.TONIGHT...NE WIND 15 TO 25 KT. SEAS 8 TO 12 FT. 
.SUN...E WIND 10 TO 20 KT. SEAS 6 TO 10 FT. 
.SUN NIGHT...VARIABLE WIND 15 KT. SEAS 8 FT. 
.MON AND TUE...W WIND 25 KT. SEAS 9 FT. 
.WED...NW WIND 20 KT. SEAS 8 FT.  

$$

590 
FZAK61 PAFC 272325
OFFAER

OFFSHORE WATERS FORECAST
NATIONAL WEATHER SERVICE ANCHORAGE AK
400 PM AKDT SAT OCT 27 2012

OFFSHORE WATERS FORECAST FOR THE GULF OF ALASKA WEST OF 144W

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.

PKZ399-281500-
400 PM AKDT SAT OCT 27 2012
.SYNOPSIS FOR THE WESTERN GULF OF ALASKA...
A STRONG FRONT JUST SOUTH OF THE GULF WILL MOVE AWAY FROM THE REGION 
SAT NIGHT AND SUN. A 1008 MB LOW WILL FORM OVER THE NORTHERN 
GULF ON MON.

$$

PKZ351-281500-
GULF OF ALASKA OFFSHORE NORTH OF 57N AND WEST OF 144W
400 PM AKDT SAT OCT 27 2012

.TONIGHT...E WIND 20 KT. SEAS 8 FT. 
.SUN AND SUN NIGHT...VARIABLE WIND 15 KT. SEAS 7 FT. 
.MON...SW WIND 20 KT. SEAS 7 FT. 
.MON NIGHT...W WIND 25 KT. SEAS 7 FT. 
.TUE...W WIND 30 KT. SEAS 9 FT. 
.WED...N WIND 20 KT. SEAS 7 FT. 
.THU...E WIND 30 KT. SEAS 9 FT.  

$$

PKZ352-281500-
GULF OF ALASKA OFFSHORE SOUTH OF 57N NORTH OF 55N AND WEST OF
144W
400 PM AKDT SAT OCT 27 2012

.TONIGHT...E WIND 20 TO 30 KT. SEAS 9 TO 13 FT. 
.SUN...E WIND 25 KT DIMINISHING TO 15 KT IN THE AFTERNOON. SEAS 6 TO
10 FT. 
.SUN NIGHT...NE WIND 15 KT. SEAS 5 TO 9 FT. 
.MON AND MON NIGHT...WIND 20 KT. SEAS 7 FT. 
.TUE...W WIND 30 KT. SEAS 10 FT. 
.WED...NW WIND 20 KT. SEAS 8 FT. 
.THU...E WIND 30 KT. SEAS 13 FT.  

$$

SOUTHCENTRAL AND SOUTHWEST ALASKA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE ANCHORAGE AK
1240 PM AKDT WED OCT 24 2012

.ANALYSIS AND UPPER LEVELS...STRONG OMEGA BLOCK HAS TRANSITIONED
INTO A REX BLOCK WITH AN UPPER HIGH CENTERED OVER THE BERING SEA
AND AN UPPER LOW OVER THE NORTH CENTRAL PACIFIC. THIS IS PRODUCING
CLEAR AND COLD CONDITIONS FOR MUCH OF THE ALASKA REGION. WEAK UPPER
LEVEL DISTURBANCES ARE MOVING SOUTHWESTWARD ALONG THE EASTERN
PERIPHERY OF THE HIGH...FROM THE AL-CAN BORDER TO SOUTHCENTRAL AND
THE GULF OF ALASKA. THESE UPPER WAVES COMBINED WITH WEAK LOW LEVEL
COLD ADVECTION AND A TIGHT SURFACE PRESSURE GRADIENT ARE PRODUCING
LOCALLY GUSTY WINDS THROUGH MOUNTAIN GAPS OF SOUTHCENTRAL. THERE
ARE ALSO SOME STRONGER WINDS ALONG THE NORTHERN PERIPHERY OF THE
PACIFIC LOW...PRIMARILY SOUTH OF THE ALASKA PENINSULA AND ALEUTIAN
CHAIN.

.MODEL DISCUSSION...MODELS REMAIN IN GOOD AGREEMENT WITH SYNOPTIC
SCALE FEATURES AS REX BLOCK REMAINS IN PLACE THROUGH THE WEEKEND.
THERE ARE MINOR DIFFERENCES IN LOW POSITIONS OVER THE NORTH CENTRAL
PACIFIC BUT THIS WILL HAVE VERY LITTLE IMPACT ON THE WIND FORECASTS
ALONG THE ALASKA PENINSULA AND EASTERN ALEUTIANS. THUS...FORECAST
CONFIDENCE IS HIGH.

.SHORT TERM FORECAST...A TROUGH MOVING UP THE WESTERN PERIPHERY OF
THE HIGH WILL CAUSE IT TO SHIFT NORTH AND EASTWARD TOWARD MAINLAND
ALASKA. THIS WILL PUSH THE UPPER LEVEL DISTURBANCES ALONG THE
EASTERN PERIPHERY OF THE HIGH INTO CANADA. MEANWHILE THE LOW LEVEL
PRESSURE GRADIENT WILL WEAKEN AND COLD ADVECTION WILL COME TO AN
END. THIS WILL BRING AN END TO GAP WINDS ACROSS SOUTHCENTRAL
TONIGHT INTO THURSDAY. CLEAR AND COLD CONDITIONS WILL THEN DOMINATE
THE SOUTHERN MAINLAND THROUGH THE END OF THE WEEK.

AS THE UPPER HIGH SHIFTS NORTHWARD THE UPPER LOW OVER THE
NORTH-CENTRAL PACIFIC WILL ALSO MEANDER NORTHWARD. THE BULK OF
PRECIP WILL REMAIN SOUTH OF THE ALASKA PENINSULA AND ALEUTIANS BUT
STRONGER WINDS WILL MOVE IN OUT AHEAD OF AN APPROACHING FRONT OVER
THE NEXT COUPLE DAYS.

.LONG TERM FORECAST...MEDIUM RANGE MODELS INDICATE A PATTERN CHANGE
DURING THE EARLY TO MIDDLE OF NEXT WEEK. THE DETAILS OF THE PATTERN
EVOLUTION DIFFER...BUT THE KEY SEEMS TO BE A STRONG ARCTIC SHORT-WAVE
DROPPING SOUTHWARD ACROSS MAINLAND ALASKA CAUSING THE UPPER HIGH TO
RETROGRADE WESTWARD TOWARD RUSSIA. THIS WILL CAUSE ARCTIC AIR TO
PLUNGE SOUTHWARD ACROSS THE STATE...LIKELY LEADING TO CYCLOGENESIS
OVER THE GULF. THUS...EXPECT PRECIP TO MOVE BACK INTO THE FORECAST
NEXT WEEK.

.AER/ALU...WATCH/WARNING SUMMARY
PUBLIC...NONE.
MARINE...GALE WARNING...150 155 170.
FIRE WEATHER...NONE.

SEB OCT 12