Gale Warning 316, NWS Anchorage, AK

658 
FZAK61 PAFC 211205
OFFAER

OFFSHORE WATERS FORECAST
NATIONAL WEATHER SERVICE ANCHORAGE AK
400 AM AKDT THU APR 21 2011

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.

PKZ399-220300-
400 AM AKDT THU APR 21 2011
.SYNOPSIS FOR THE WESTERN GULF OF ALASKA...
A WEAK LOW PRESSURE TROUGH WILL CONTINUE OVER THE NORTHWEST GULF OF
ALASKA THROUGH THURSDAY NIGHT. A WEAKENING WEATHER FRONT MOVES INTO
THE SOUTHERN GULF OF ALASKA WEDNESDAY EVENING THEN TO THE NORTH GULF
COAST THURSDAY NIGHT. 
$$

PKZ351-220300-
GULF OF ALASKA OFFSHORE NORTH OF 57N AND WEST OF 144W
400 AM AKDT THU APR 21 2011

...GALE WARNING TONIGHT AND FRIDAY...

.TODAY...S WIND 20 KT. SEAS 7 FT. 
.TONIGHT...SE WIND 35 KT. SEAS 7 FT BUILDING TO 11 FT 
AFTER MIDNIGHT. RAIN.
.FRI...SE WIND 35 KT. SEAS 15 FT. RAIN.
.FRI NIGHT...SE WIND 35 KT. SEAS 17 FT. 
.SAT...SE WIND 35 KT. SEAS 19 FT. 
.SUN...SE WIND 20 KT. SEAS 14 FT. 
.MON...VARIABLE WIND 10 KT. SEAS 11 FT.  

$$

PKZ352-220300-
GULF OF ALASKA OFFSHORE SOUTH OF 57N NORTH OF 55N AND WEST OF 144W
400 AM AKDT THU APR 21 2011

...GALE WARNING TONIGHT AND FRIDAY...

.TODAY...S WIND 20 KT INCREASING TO SE 30 KT IN THE AFTERNOON. 
SEAS 8 FT. 
.TONIGHT...SE WIND 35 KT. SEAS 13 FT. RAIN.
.FRI...S WIND 25 TO 35 KT. SEAS 15 FT. RAIN.
.FRI NIGHT...SE WIND 25 TO 35 KT. SEAS 17 FT. 
.SAT...SE WIND 20 TO 30 KT. SEAS 17 FT. 
.SUN...SW WIND 25 KT. SEAS 14 FT. 
.MON...SW WIND 20 KT. SEAS 11 FT.  

$$

909 
FZAK61 PAFC 212343
OFFAER

OFFSHORE WATERS FORECAST
NATIONAL WEATHER SERVICE ANCHORAGE AK
400 PM AKDT THU APR 21 2011

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.

PKZ399-221500-
400 PM AKDT THU APR 21 2011
.SYNOPSIS FOR THE WESTERN GULF OF ALASKA...
A WEATHER FRONT IN THE SOUTHERN GULF OF ALASKA MOVES INTO THE
NORTHERN GULF TONIGHT. ANOTHER WEATHER FRONT MOVES INTO THE SOUTHERN
GULF FRI EVENING AND INTO THE NORTHERN GULF FRI NIGHT.
$$

PKZ351-221500-
GULF OF ALASKA OFFSHORE NORTH OF 57N AND WEST OF 144W
400 PM AKDT THU APR 21 2011

...GALE WARNING THROUGH FRIDAY NIGHT...

.TONIGHT...SE WIND 35 KT. SEAS BUILDING TO 11 FT AFTER MIDNIGHT.
RAIN.
.FRI...SE WIND 35 KT. SEAS 15 FT. RAIN.
.FRI NIGHT...SE WIND 35 KT. SEAS 17 FT. RAIN.
.SAT...SE WIND 35 KT. SEAS 18 FT. 
.SAT NIGHT...SE WIND 25 KT. SEAS 19 FT. 
.SUN...SE WIND 20 KT. SEAS 14 FT. 
.MON...S WIND 10 KT. SEAS 11 FT. 
.TUE...S WIND 10 KT. SEAS 7 FT.  

$$

PKZ352-221500-
GULF OF ALASKA OFFSHORE SOUTH OF 57N NORTH OF 55N AND WEST OF
144W
400 PM AKDT THU APR 21 2011

...GALE WARNING THROUGH FRIDAY NIGHT...

.TONIGHT...SE WIND 35 KT. SEAS 13 FT. RAIN.
.FRI...S WIND 35 KT. SEAS 15 FT. RAIN.
.FRI NIGHT...SE WIND 35 KT. SEAS 17 FT. RAIN.
.SAT...SE WIND 35 KT. SEAS 17 FT. 
.SAT NIGHT...SE WIND 25 KT. SEAS 15 FT. 
.SUN...S WIND 25 KT. SEAS 14 FT. 
.MON...SW WIND 20 KT. SEAS 11 FT. 
.TUE...S WIND 10 KT. SEAS 7 FT.  
$$

473 
FZAK61 PAFC 221153
OFFAER

OFFSHORE WATERS FORECAST
NATIONAL WEATHER SERVICE ANCHORAGE AK
400 AM AKDT FRI APR 22 2011

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.

PKZ399-230300-
400 AM AKDT FRI APR 22 2011
.SYNOPSIS FOR THE WESTERN GULF OF ALASKA...
A WEATHER FRONT MOVES ACROSS THE GULF FRIDAY MORNING. A SECOND 
FRONT WILL MOVE ACROSS THE GULF SATURDAY.
$$

PKZ351-230300-
GULF OF ALASKA OFFSHORE NORTH OF 57N AND WEST OF 144W
400 AM AKDT FRI APR 22 2011

...GALE WARNING THROUGH SATURDAY...

.TODAY...SE WIND 25 TO 40 KT. SEAS 11 TO 16 FT. RAIN.
.TONIGHT...SE WIND 40 KT. SEAS 16 FT. RAIN.
.SAT...SE WIND 40 KT DIMINISHING TO 25 KT IN THE AFTERNOON. 
SEAS 18 FT. RAIN.
.SAT NIGHT...SE WIND 25 KT. SEAS 17 FT. 
.SUN...SE WIND 15 TO 25 KT. SEAS 15 FT. 
.MON...S WIND 15 KT. SEAS 11 FT. 
.TUE...S WIND 10 KT. SEAS 7 FT.  

$$

PKZ352-230300-
GULF OF ALASKA OFFSHORE SOUTH OF 57N NORTH OF 55N AND WEST OF 144W
400 AM AKDT FRI APR 22 2011

...GALE WARNING THROUGH TONIGHT...

.TODAY...S WIND 25 TO 40 KT. SEAS 11 TO 17 FT. RAIN.
.TONIGHT...SE WIND 30 TO 40 KT. SEAS 18 FT. RAIN.
.SAT...SE WIND 20 TO 30 KT. SEAS 18 FT. RAIN.
.SAT NIGHT...SE WIND 20 TO 30 KT. SEAS 16 FT. 
.SUN...S WIND 15 TO 25 KT. SEAS 16 FT. 
.MON...SW WIND 20 KT. SEAS 11 FT. 
.TUE...S WIND 15 KT. SEAS 8 FT.  

$$

491 
FZAK61 PAFC 222344
OFFAER

OFFSHORE WATERS FORECAST
NATIONAL WEATHER SERVICE ANCHORAGE AK
400 PM AKDT FRI APR 22 2011

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.

PKZ399-231500-
400 PM AKDT FRI APR 22 2011
.SYNOPSIS FOR THE WESTERN GULF OF ALASKA...

A WEATHER FRONT MOVES INTO THE SOUTHERN GULF TONIGHT AND TO THE GULF
COAST SAT AFTERNOON. A 969 MB LOW MOVES TO 54N 155W TONIGHT AND TO
58N 156W AT 987 MB SUN AFTERNOON.

$$

PKZ351-231500-
GULF OF ALASKA OFFSHORE NORTH OF 57N AND WEST OF 144W
400 PM AKDT FRI APR 22 2011

...GALE WARNING THROUGH SATURDAY...

.TONIGHT...SE WIND 30 TO 40 KT. SEAS 18 FT. RAIN.
.SAT...SE WIND 40 KT DIMINISHING TO 30 KT IN THE AFTERNOON. SEAS 19
FT. RAIN.
.SAT NIGHT...SE WIND 20 TO 30 KT. SEAS 15 FT. RAIN.
.SUN...SE WIND 25 KT. SEAS 15 FT. 
.SUN NIGHT...SE WIND 15 KT. SEAS 13 FT. 
.MON...S WIND 15 KT. SEAS 11 FT. 
.TUE...VARIABLE WIND 10 KT. SEAS 7 FT. 
.WED...VARIABLE WIND 10 KT. SEAS 4 FT.  

$$

PKZ352-231500-
GULF OF ALASKA OFFSHORE SOUTH OF 57N NORTH OF 55N AND WEST OF
144W
400 PM AKDT FRI APR 22 2011

...GALE WARNING TONIGHT...

.TONIGHT...SE WIND 30 TO 40 KT. SEAS 14 TO 18 FT. RAIN.
.SAT...SE WIND 20 TO 30 KT. SEAS 14 TO 18 FT. RAIN.
.SAT NIGHT...SE WIND 20 TO 30 KT. SEAS 12 TO 16 FT. RAIN.
.SUN...S WIND 25 KT. SEAS 17 FT. 
.SUN NIGHT...S WIND 20 KT. SEAS 14 FT. 
.MON...SW WIND 20 KT. SEAS 11 FT. 
.TUE...VARIABLE WIND 10 KT. SEAS 8 FT. 
.WED...VARIABLE WIND 10 KT. SEAS 5 FT.  

$$

889 
FZAK61 PAFC 231152
OFFAER

OFFSHORE WATERS FORECAST
NATIONAL WEATHER SERVICE ANCHORAGE AK
400 AM AKDT SAT APR 23 2011

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.

PKZ399-240300-
400 AM AKDT SAT APR 23 2011
.SYNOPSIS FOR THE WESTERN GULF OF ALASKA...
A FRONT OVER THE SOUTHERN GULF MOVES TO THE NORTH GULF COAST SAT
AFTERNOON AND THEN REMAINS NEARLY STATIONARY AS IT WEAKENS THROUGH
SUN. A 973 MB LOW NEAR 54N 155W MOVES TO 56N 156W AT 990 MB SUN
EVENING.
$$

PKZ351-240300-
GULF OF ALASKA OFFSHORE NORTH OF 57N AND WEST OF 144W
400 AM AKDT SAT APR 23 2011

...GALE WARNING THROUGH TONIGHT...

.TODAY...SE WIND 30 TO 40 KT. SEAS 18 FT. RAIN.
.TONIGHT...SE WIND 25 TO 35 KT. SEAS 18 FT. RAIN.
.SUN...SE WIND 15 TO 25 KT. SEAS 15 FT. RAIN.
.SUN NIGHT...SE WIND 15 KT. SEAS 14 FT. 
.MON...S WIND 15 KT. SEAS 10 FT. 
.TUE AND WED...VARIABLE WIND 10 KT. SEAS 7 FT. 

$$

PKZ352-240300-
GULF OF ALASKA OFFSHORE SOUTH OF 57N NORTH OF 55N AND WEST OF 144W
400 AM AKDT SAT APR 23 2011

...GALE WARNING THROUGH TONIGHT...

.TODAY...SE WIND 25 TO 35 KT. SEAS 17 FT. RAIN.
.TONIGHT...SE WIND 25 TO 35 KT. SEAS 16 FT. RAIN.
.SUN...S WIND 15 TO 25 KT. SEAS 16 FT. RAIN.
.SUN NIGHT...S WIND 15 KT. SEAS 13 FT. 
.MON...SW WIND 25 KT. SEAS 10 FT. 
.TUE...VARIABLE WIND 10 KT. SEAS 8 FT. 
.WED...W WIND 15 KT. SEAS 6 FT.  

$$

253 
FZAK61 PAFC 232333
OFFAER

OFFSHORE WATERS FORECAST
NATIONAL WEATHER SERVICE ANCHORAGE AK
400 PM AKDT SAT APR 23 2011

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.

PKZ399-241500-
400 PM AKDT SAT APR 23 2011
.SYNOPSIS FOR THE WESTERN GULF OF ALASKA...

A FRONTAL BOUNDARY ALONG THE NORTH GULF COAST SLOWLY WEAKENS THROUGH
SUNDAY MORNING. A 974 MB LOW NEAR 54N 157W MOVES ACROSS THE ALASKA
PENINSULA INTO BRISTOL BAY SUNDAY MORNING.

$$

PKZ351-241500-
GULF OF ALASKA OFFSHORE NORTH OF 57N AND WEST OF 144W
400 PM AKDT SAT APR 23 2011

...GALE WARNING TONIGHT...

.TONIGHT...SE WIND 25 TO 35 KT. SEAS 15 TO 18 FT. RAIN.
.SUN...SE WIND 15 TO 25 KT. SEAS 12 TO 15 FT. RAIN.
.SUN NIGHT...SE WIND 15 KT. SEAS 13 FT. 
.MON...S WIND 15 KT. SEAS 11 FT. 
.MON NIGHT...SW WIND 15 KT. SEAS 9 FT. 
.TUE...SW WIND 15 KT. SEAS 8 FT. 
.WED...VARIABLE WIND 10 KT. SEAS 5 FT. 
.THU...S WIND 20 KT. SEAS 4 FT.  

$$

PKZ352-241500-
GULF OF ALASKA OFFSHORE SOUTH OF 57N NORTH OF 55N AND WEST OF
144W
400 PM AKDT SAT APR 23 2011

...GALE WARNING TONIGHT...

.TONIGHT...SE WIND 25 TO 35 KT. SEAS 14 TO 17 FT. RAIN.
.SUN...S WIND 15 TO 25 KT. SEAS 11 TO 15 FT. RAIN.
.SUN NIGHT...S WIND 15 KT. SEAS 9 TO 13 FT. 
.MON...SW WIND 25 KT. SEAS 11 FT. 
.MON NIGHT...SW WIND 20 KT. SEAS 10 FT. 
.TUE...W WIND 15 KT. SEAS 9 FT. 
.WED...W WIND 15 KT. SEAS 6 FT. 
.THU...SE WIND 25 KT. SEAS 8 FT.  

$$

203 
FZAK61 PAFC 241155
OFFAER

OFFSHORE WATERS FORECAST
NATIONAL WEATHER SERVICE ANCHORAGE AK
400 AM AKDT SUN APR 24 2011

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.

PKZ399-250300-
400 AM AKDT SUN APR 24 2011
.SYNOPSIS FOR THE WESTERN GULF OF ALASKA...

A FRONTAL BOUNDARY ALONG THE NORTH GULF COAST SLOWLY WEAKENS THROUGH
SUNDAY MORNING. A 979 MB LOW NEAR 56N 157W MOVES ACROSS THE ALASKA
PENINSULA INTO BRISTOL BAY SUNDAY NIGHT.

$$

PKZ351-250300-
GULF OF ALASKA OFFSHORE NORTH OF 57N AND WEST OF 144W
400 AM AKDT SUN APR 24 2011

.TODAY...SE WIND 15 TO 25 KT. SEAS 8 TO 13 FT. RAIN.
.TONIGHT...SE WIND 15 KT. SEAS 13 FT. 
.MON...S WIND 15 KT. SEAS 11 FT. 
.MON NIGHT...SW WIND 15 KT. SEAS 8 FT. 
.TUE...W WIND 15 KT. SEAS 6 FT. 
.WED...VARIABLE WIND 10 KT. SEAS 5 FT. 
.THU...S WIND 20 KT. SEAS 8 FT.  

$$

PKZ352-250300-
GULF OF ALASKA OFFSHORE SOUTH OF 57N NORTH OF 55N AND WEST OF
144W
400 AM AKDT SUN APR 24 2011

.TODAY...S WIND 15 TO 25 KT. SEAS 10 TO 15 FT. RAIN.
.TONIGHT...S WIND 15 KT. SEAS 13 FT. 
.MON...SW WIND 25 KT. SEAS 11 FT. 
.MON NIGHT...SW WIND 20 KT. SEAS 11 FT. 
.TUE...W WIND 15 KT. SEAS 7 FT. 
.WED...VARIABLE WIND 10 KT. SEAS 6 FT. 
.THU...SE WIND 20 KT. SEAS 11 FT.  

$$

SOUTHCENTRAL AND SOUTHWEST ALASKA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE ANCHORAGE AK
200 PM AKDT WED APR 20 2011

.MODEL DISCUSSION...
MODELS ARE IN GENERAL AGREEMENT THROUGH FRI MORNING THEN DIVERGE ON
SOLUTIONS. THE MAIN ISSUE IS WITH THE MOVEMENT THE LOW COMPLEX SOUTH
OF THE AK PEN. THE GFS SEEMS TO BE A LITTLE MORE CONSISTENT THAN THE
ECMWF WHICH TOOK A SIGNIFICANT JUMP TO THE NORTH WITH LOW CENTER ON
THE 12Z RUN. OVERALL WILL BE LEANING TOWARD THE NAM FOR MESOSCALE
WIND FORECASTS (EXCELLENT HANDLING OF WINDS OVER THE WESTERN GULF AND
SOUTHCENTRAL) IN THE FIRST 48 HRS OR SO...THEN WILL BLEND CURRENT
GRIDS WITH THE GFS FOR THE REMAINDER OF THE 84 HRS.

.ANALYSIS AND UPPER LEVELS...
THE UPPER LEVELS SHOW A LOW SOUTH OF SHEMYA AS WELL AS ANOTHER LOW
SOUTH OF DUTCH HARBOR. THERE IS A LOW NORTH OF PRUDHOE BAY...WITH A
TROUGH EXTENDING SOUTHWESTWARD INTO SOUTHWEST ALASKA. HIGH PRESSURE
IS KEEPING ITS HOLD OVER MOST OF THE BERING. THE MAIN LOW AT THE
SURFACE IS SOUTH OF DUTCH HARBOR...ALTHOUGH THERE IS ALSO A WEAK LOW
OVER THE KENAI PENINSULA AS WELL. BROAD SURFACE HIGH PRESSURE LIES
OVER SIBERIA EASTWARD THROUGH NORTHERN ALASKA.

.SHORT TERM FORECAST...
SOUTHCENTRAL...TROUGH EXTENDS ACROSS SOUTHCENTRAL ALASKA AND A WEAK
LOW PRESSURE CENTER IS OVER THE NORTH GULF JUST SOUTH OF PRINCE
WILLIAM SOUND. THE MORNING SOUNDINGS OVER FAIRBANKS AND ANCHORAGE
SHOWED A MOISTENING IN THE LOW AND MID LEVELS OVERNIGHT. SHOWERS ARE
ALSO EVIDENT OVER THE NORTH GULF. SHOULD CONTINUE TO SEE INCREASING
CLOUDS AND SHOWERS (RAIN COASTS) OVER THE NEXT COUPLE OF DAYS WITH
THE INTRUSION OF MOISTURE FROM FRONTAL SYSTEMS APPROACHING THE GULF
OF ALASKA. ALSO WILL SEE INCREASING PRESSURE GRADIENTS WHICH WILL
GENERATE BRISK AND GUSTY GAP FLOWS AND BRISK WINDS ACROSS THE GULF OF
ALASKA.

SOUTHWEST...
A BROAD BAND OF STRATUS AND FOG OVER BRISTOL BAY...WHICH BROUGHT
DENSE FOG ALONG THE COASTS...HAS LIFTED SOME THIS AFTERNOON. EXPECT
COASTAL LOCATIONS MAY SEE ANOTHER EPISODE TONIGHT WITH GENERALLY
LIGHT WINDS ACROSS THE REGION. FOG SHOULD NOT BE A PROBLEM ALONG THE
NORTHERN AND EASTERN GUSTS AS NORTHERLY FLOW SETS UP OVER BRISTOL BAY
THU.

ALEUTIANS/EASTERN BERING SEA...THE LOW PASSING SOUTH OF THE ALEUTIANS
AND AK PEN THU AND FRI WILL PRODUCE GUSTY EAST TO NORTHEAST WINDS
OVER MUCH OF THE ALEUTIANS AND EASTERN BERING SEA OVER THE NEXT DAY
OR SO.

.LONG TERM FORECAST...
THE RAIN AND SNOW SHOWER CHANCES WILL CONTINUE FOR MUCH OF THE AREA
THROUGH THE END OF THE WEEK. WHILE CONFIDENCE IS MODERATE TO HIGH FOR
THE END OF THE WEEK...CONFIDENCE DECREASES BY THE WEEKEND...WHEN
MODEL DIFFERENCES ARE GREATEST.

.AER/ALU...WATCH/WARNING SUMMARY
PUBLIC...NONE.
MARINE...GALES 155 165 170 172 414.
FIRE WEATHER...NONE.

RMC APR 11