Gale Warning 366, NWS Anchorage, AK

000 
FZAK62 PAFC 232352
OFFALU

OFFSHORE WATERS FORECAST
NATIONAL WEATHER SERVICE ANCHORAGE AK
400 PM AKDT THU APR 23 2009

OFFSHORE WATERS FORECAST FOR THE BERING SEA

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.

PKZ499-241400-
400 PM AKDT THU APR 23 2009
.SYNOPSIS FOR CENTRAL BERING SEA...
A 987 MB LOW NEAR 58N 176E WILL MOVE TO 64N 170W AS 1001MB BY EARLY
FRIDAY MORNING. A 977 MB LOW WILL MOVE TO 51N 172E BY FRIDAY MORNING.

$$

PKZ411-241400-
BERING SEA OFFSHORE WEST OF 180 AND EAST OF THE INTERNATIONAL
DATELINE
400 PM AKDT THU APR 23 2009

...GALE WARNING THROUGH FRIDAY...

.TONIGHT...SW WIND 30 KT BECOMING E 30 KT THIS EVENING THEN
INCREASING TO 40 KT AFTER MIDNIGHT. SEAS 12 FT. RAIN AND SNOW. 
.FRI...E WIND 35 KT. SEAS 14 FT. RAIN AND SNOW. 
.FRI NIGHT...SE WIND 25 KT. SEAS 14 FT. RAIN AND SNOW.
.SAT...E WIND 30 KT. SEAS 13 FT. 
.SAT NIGHT AND SUN...NW WIND 35 KT. SEAS 14 FT. 
.MON...S WIND 30 KT. SEAS 13 FT. 
.TUE...SE WIND 35 KT. SEAS 19 FT.  

$$

PKZ412-241400-
BERING SEA OFFSHORE 171W TO 180 AND NORTH OF 56N
400 PM AKDT THU APR 23 2009

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

.TONIGHT...SW WIND 25 KT. SEAS 11 FT. RAIN AND SNOW. 
.FRI...SE WIND 35 KT. SEAS 15 FT. RAIN AND SNOW. 
.FRI NIGHT...SE WIND 35 KT DIMINISHING TO 25 KT AFTER MIDNIGHT. 
SEAS 16 FT. RAIN AND SNOW. 
.SAT...S WIND 20 KT. SEAS 13 FT. 
.SAT NIGHT AND SUN...SW WIND 25 KT. SEAS 10 FT. 
.MON...SW WIND 20 KT. SEAS 8 FT. 
.TUE...SE WIND 30 KT. SEAS 12 FT.  

$$

PKZ413-241400-
BERING SEA OFFSHORE 171W TO 180 AND SOUTH OF 56N
400 PM AKDT THU APR 23 2009

...GALE WARNING THROUGH FRIDAY NIGHT...

.TONIGHT...S WIND 30 KT INCREASING TO SE 45 KT AFTER MIDNIGHT. 
SEAS 13 FT. RAIN.
.FRI...SE WIND 45 KT. SEAS 17 FT. RAIN.
.FRI NIGHT...S WIND 35 KT DIMINISHING TO 25 KT AFTER MIDNIGHT. 
SEAS 16 FT. 
.SAT AND SAT NIGHT...S WIND 30 KT. SEAS 12 FT. 
.SUN...W WIND 25 KT. SEAS 10 FT. 
.MON...S WIND 30 KT. SEAS 9 FT. 
.TUE...SE WIND 35 KT. SEAS 15 FT.  

$$

PKZ414-241400-
BERING SEA OFFSHORE EAST OF 171W
400 PM AKDT THU APR 23 2009

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

.TONIGHT...S WIND 30 KT. SEAS IN ICE FREE WATERS 11 FT. 
SNOW AND RAIN SHOWERS. 
.FRI AND FRI NIGHT...SE WIND 40 KT. SEAS IN ICE FREE WATERS 13 FT.
RAIN AND SNOW. 
.SAT THROUGH SUN...S WIND 30 KT. SEAS IN ICE FREE WATERS 10 FT. 
.MON...S WIND 20 KT. SEAS IN ICE FREE WATERS 7 FT. 
.TUE...SE WIND 30 KT. SEAS IN ICE FREE WATERS 8 FT.  

$$

000 
FZAK62 PAFC 241156
OFFALU

OFFSHORE WATERS FORECAST
NATIONAL WEATHER SERVICE ANCHORAGE AK
400 AM AKDT FRI APR 24 2009

OFFSHORE WATERS FORECAST FOR THE BERING SEA

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.

PKZ499-250200-
400 AM AKDT FRI APR 24 2009
.SYNOPSIS FOR CENTRAL BERING SEA...
A 977 MB LOW NEAR 53N 173E WILL MOVE TO 55N 179W AT 981 MB EARLY
SUNDAY MORNING.
$$

PKZ411-250200-
BERING SEA OFFSHORE WEST OF 180 AND EAST OF THE INTERNATIONAL
DATELINE
400 AM AKDT FRI APR 24 2009

...GALE WARNING TODAY...

.TODAY...E WIND 35 KT. SEAS 13 FT. RAIN AND SNOW. 
.TONIGHT...SE WIND 20 KT. SEAS 13 FT. 
.SAT...E WIND 30 KT. SEAS 13 FT. 
.SAT NIGHT AND SUN...NW WIND 30 KT. SEAS 14 FT. 
.MON...S WIND 40 KT. SEAS 15 FT. 
.TUE...SE WIND 40 KT. SEAS 18 FT.  

$$

PKZ412-250200-
BERING SEA OFFSHORE 171W TO 180 AND NORTH OF 56N
400 AM AKDT FRI APR 24 2009

...GALE WARNING TODAY...

.TODAY...SE WIND 20 KT INCREASING TO 35 KT IN THE AFTERNOON. SEAS 10
FT...BUILDING TO 16 FT IN THE AFTERNOON. RAIN AND SNOW. 
.TONIGHT...SE WIND 30 KT BECOMING S 20 KT AFTER MIDNIGHT. SEAS
16 FT. 
.SAT...S WIND 25 KT. SEAS 13 FT. 
.SAT NIGHT...S WIND 25 KT. SEAS 11 FT. 
.SUN...SW WIND 20 KT. SEAS 11 FT. 
.MON...S WIND 25 KT. SEAS 9 FT. 
.TUE...SE WIND 35 KT. SEAS 14 FT.  

$$

PKZ413-250200-
BERING SEA OFFSHORE 171W TO 180 AND SOUTH OF 56N
400 AM AKDT FRI APR 24 2009

...GALE WARNING THROUGH TONIGHT...

.TODAY...SE WIND 45 KT. SEAS 12 TO 16 FT. SNOW.
.TONIGHT...S WIND 35 KT DIMINISHING TO 25 KT AFTER MIDNIGHT. SEAS
15 FT. 
.SAT...S WIND 25 KT. SEAS 11 FT. 
.SAT NIGHT...S WIND 35 KT. SEAS 12 FT. 
.SUN...W WIND 25 KT. SEAS 11 FT. 
.MON...SE WIND 30 KT. SEAS 12 FT. 
.TUE...SE WIND 35 KT. SEAS 15 FT.  

$$

PKZ414-250200-
BERING SEA OFFSHORE EAST OF 171W
400 AM AKDT FRI APR 24 2009

...GALE WARNING THROUGH TONIGHT...

.TODAY...SE WIND 20 KT INCREASING TO 35 KT IN THE AFTERNOON. SEAS IN
ICE FREE WATERS 11 FT. 
.TONIGHT...SE WIND 35 KT. SEAS IN ICE FREE WATERS 13 FT. SNOW AND
RAIN. 
.SAT AND SAT NIGHT...S WIND 25 KT. SEAS IN ICE FREE WATERS 10 FT. 
.SUN...S WIND 30 KT. SEAS IN ICE FREE WATERS 10 FT. 
.MON...S WIND 25 KT. SEAS IN ICE FREE WATERS 9 FT. 
.TUE...SE WIND 25 KT. SEAS IN ICE FREE WATERS 9 FT. 

$$

000 
FZAK62 PAFC 250002
OFFALU

OFFSHORE WATERS FORECAST
NATIONAL WEATHER SERVICE ANCHORAGE AK
400 PM AKDT FRI APR 24 2009

OFFSHORE WATERS FORECAST FOR THE BERING SEA

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.

PKZ499-251400-
400 PM AKDT FRI APR 24 2009
.SYNOPSIS FOR CENTRAL BERING SEA...
A 974 MB LOW NEAR 53N 174E WILL MOVE TO NEAR 55N 175W AT 992 MB SUN
AFTERNOON.
$$

PKZ411-251400-
BERING SEA OFFSHORE WEST OF 180 AND EAST OF THE INTERNATIONAL
DATELINE
400 PM AKDT FRI APR 24 2009

...GALE WARNING SATURDAY AND SATURDAY NIGHT...

.TONIGHT...SE WIND 30 KT. SEAS 14 FT. RAIN AND SNOW. 
.SAT...E WIND 35 KT. SEAS 14 FT. RAIN AND SNOW. 
.SAT NIGHT...NW WIND 35 KT. SEAS 16 FT. 
.SUN...NW WIND 30 KT. SEAS 15 FT. 
.SUN NIGHT...W WIND 20 KT. SEAS 12 FT. 
.MON...SE WIND 35 KT. SEAS 13 FT. 
.TUE...SE WIND 40 KT. SEAS 16 FT. 
.WED...NE WIND 25 KT. SEAS 15 FT.  

$$

PKZ412-251400-
BERING SEA OFFSHORE 171W TO 180 AND NORTH OF 56N
400 PM AKDT FRI APR 24 2009

...GALE WARNING TONIGHT...

.TONIGHT...SE WIND 35 KT DIMINISHING TO S 25 KT AFTER MIDNIGHT. 
SEAS 17 FT. RAIN AND SNOW. 
.SAT AND SAT NIGHT...S WIND 25 KT. SEAS 13 FT. 
.SUN...SE WIND 25 KT. SEAS 11 FT. 
.SUN NIGHT...W WIND 25 KT. SEAS 10 FT. 
.MON...SE WIND 25 KT. SEAS 7 FT. 
.TUE...SE WIND 35 KT. SEAS 14 FT. 
.WED...E WIND 30 KT. SEAS 15 FT.  

$$

PKZ413-251400-
BERING SEA OFFSHORE 171W TO 180 AND SOUTH OF 56N
400 PM AKDT FRI APR 24 2009

...GALE WARNING TONIGHT...

.TONIGHT...S WIND 35 KT. SEAS 16 FT. 
.SAT AND SAT NIGHT...S WIND 30 KT. SEAS 12 FT. 
.SUN...W WIND 30 KT. SEAS 11 FT. 
.SUN NIGHT...SW WIND 25 KT. SEAS 12 FT. 
.MON...SE WIND 30 KT. SEAS 10 FT. 
.TUE...SE WIND 40 KT. SEAS 14 FT. 
.WED...S WIND 30 KT. SEAS 13 FT.  

$$

PKZ414-251400-
BERING SEA OFFSHORE EAST OF 171W
400 PM AKDT FRI APR 24 2009

...GALE WARNING TONIGHT...

.TONIGHT...SE WIND 40 KT. SEAS IN ICE FREE WATERS 14 FT. 
RAIN AND SNOW. 
.SAT...S WIND 25 KT. SEAS IN ICE FREE WATERS 12 FT. RAIN AND SNOW. 
.SAT NIGHT...S WIND 25 KT. SEAS IN ICE FREE WATERS 9 FT. 
.SUN AND SUN NIGHT...S WIND 30 KT. SEAS IN ICE FREE WATERS 9 FT. 
.MON...S WIND 20 KT. SEAS IN ICE FREE WATERS 7 FT. 
.TUE AND WED...SE WIND 30 KT. SEAS IN ICE FREE WATERS 9 FT. 

$$

000 
FZAK62 PAFC 251158
OFFALU

OFFSHORE WATERS FORECAST
NATIONAL WEATHER SERVICE ANCHORAGE AK
400 AM AKDT SAT APR 25 2009

OFFSHORE WATERS FORECAST FOR THE BERING SEA

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.

PKZ499-260200-
400 AM AKDT SAT APR 25 2009
.SYNOPSIS FOR CENTRAL BERING SEA...
A 974 MB LOW AROUND 53N 176E WILL MOVE TO NEAR 58N 172W AT 1005 MB
EARLY MONDAY MORNING. A 980 MB LOW WILL MOVE TO NEAR 50N 162E ON
MONDAY AFTERNOON.

$$

PKZ411-260200-
BERING SEA OFFSHORE WEST OF 180 AND EAST OF THE INTERNATIONAL
DATELINE
400 AM AKDT SAT APR 25 2009

...GALE WARNING THROUGH TONIGHT...

.TODAY...W OF 176E...N WIND 35 KT. SEAS 15 FT. E OF 176E...E WIND 25
KT BECOMING NW IN THE AFTERNOON. SEAS 10 FT. SNOW AND RAIN.
.TONIGHT...NW WIND 35 KT. SEAS 16 FT. SNOW AND RAIN. 
.SUN...NW WIND 30 KT. SEAS 15 FT. 
.SUN NIGHT...W WIND 20 KT. SEAS 11 FT. 
.MON...SE WIND 40 KT. SEAS 11 FT. 
.TUE...E WIND 35 KT. SEAS 13 FT. 
.WED...N WIND 25 KT. SEAS 11 FT.  

$$

PKZ412-260200-
BERING SEA OFFSHORE 171W TO 180 AND NORTH OF 56N
400 AM AKDT SAT APR 25 2009

.TODAY...S WIND 30 KT. SEAS 15 FT...SUBSIDING TO 12 FT IN THE
AFTERNOON. 
.TONIGHT...S WIND 30 KT. SEAS 12 FT. 
.SUN...E WIND 25 KT. SEAS 12 FT. 
.SUN NIGHT...NW WIND 25 KT. SEAS 11 FT. 
.MON...SE WIND 20 KT. SEAS 7 FT. 
.TUE...SE WIND 30 KT. SEAS 10 FT. 
.WED...E WIND 30 KT. SEAS 11 FT.  

$$

PKZ413-260200-
BERING SEA OFFSHORE 171W TO 180 AND SOUTH OF 56N
400 AM AKDT SAT APR 25 2009

.TODAY...S WIND 30 KT. SEAS 11 FT. 
.TONIGHT...S WIND 30 KT. SEAS 12 FT. RAIN AND SNOW. 
.SUN...W WIND 30 KT. SEAS 12 FT. 
.SUN NIGHT...NW WIND 25 KT. SEAS 12 FT. 
.MON...SE WIND 30 KT. SEAS 9 FT. 
.TUE...SE WIND 35 KT. SEAS 12 FT. 
.WED...SW WIND 30 KT. SEAS 12 FT.  

$$

PKZ414-260200-
BERING SEA OFFSHORE EAST OF 171W
400 AM AKDT SAT APR 25 2009

.TODAY...S WIND 30 KT. SEAS IN ICE FREE WATERS 11 FT...SUBSIDING TO 8
FT IN THE AFTERNOON. 
.TONIGHT...S WIND 25 KT. SEAS IN ICE FREE WATERS 7 FT. 
.SUN...SE WIND 30 KT. SEAS IN ICE FREE WATERS 9 FT. 
.SUN NIGHT...S WIND 25 KT. SEAS IN ICE FREE WATERS 8 FT.
.MON THROUGH WED...SE WIND 25 KT. SEAS IN ICE FREE WATERS 7 FT. 

$$

AREA FORECAST DISCUSSION
SOUTHCENTRAL AND SOUTHWEST ALASKA
500 PM AKDT WED APR 22 2009

.ANALYSIS AND UPPER LEVELS...
A 990 MB LOW OVER THE NORTHWEST BERING IS WEAKENING WHILE MOVING
NORTHEAST. HIGH PRESSURE IS STILL ANCHORED OVER THE GULF OF ALASKA.
BETWEEN THESE TWO SYSTEMS...MOIST SOUTHWESTERLY FLOW IS EVIDENT ON
WATER VAPOR IMAGERY.

IN THE UPPER LEVELS...A RIDGE CENTERED OVER THE ALCAN IS MOVING EAST
INTO THE YUKON. A TROUGH IS OVER THE CENTRAL AND WESTERN
ALEUTIANS...WITH A WEAKENING UPPER LOW LOCATED OVER THE NORTHWESTERN
BERING. A SHORTWAVE OVER THE EASTERN ALEUTIANS IS ROTATING AROUND THE
BASE OF THE TROUGH...POISED TO MOVE INTO SOUTHWEST AND SOUTHCENTRAL
AK TONIGHT AND TOMORROW.

.MODEL DISCUSSION...
MODELS ARE IN GOOD AGREEMENT THROUGH SATURDAY. DIFFERENCES BEGIN TO
ARISE REGARDING POSITION AND INTENSITY OF THE NORTH PACIFIC LOW
APPROACHING THE WESTERN ALEUTIANS OVER THE WEEKEND. THE GFS WAS USED
TO CONSTRUCT THE AFTERNOON FORECAST PACKAGE DUE TO CONTINUED
CONSISTENCY.

.SHORT TERM FORECAST...
.SOUTHCENTRAL...
MOIST SOUTHWEST RETURN FLOW WILL BE PUSHING INTO SOUTHCENTRAL AS THE
RIDGE SLIPS EAST. A ROBUST SHORTWAVE AND SURFACE FRONT WILL ALSO MOVE
ACROSS THE AREA THURSDAY AFTERNOON THROUGH FRIDAY...BRINGING WITH IT
WIDESPREAD RAIN AND SNOW. ANOTHER SHORTWAVE WILL APPROACH THE AREA
FRIDAY AFTERNOON...ENHANCING PRECIPITATION POTENTIAL ONCE AGAIN AS WE
HEAD INTO THE WEEKEND.

.SOUTHWEST...
RAIN AND SNOW SHOWERS WILL PERSIST ACROSS SOUTHWEST IN RESPONSE TO
THE MOIST SOUTHWESTERLY FLOW. A SHORTWAVE PUSHING THROUGH WILL
REINFORCE CHANCES FOR PRECIP TONIGHT AND TOMORROW MORNING. THE UPPER
LOW OVER THE BERING WILL WEAKEN INTO AN OPEN WAVE WHILE MOVING
EAST...ONCE AGAIN ENHANCING SHOWER COVERAGE. RAIN AND SNOW WILL
INCREASE ACROSS THE AKPEN FRIDAY NIGHT AS A FRONT ASSOCIATED WITH THE
NORTH PACIFIC LOW MOVES INTO THE AREA.

.BERING SEA AND ALEUTIANS...
SCATTERED RAIN AND SNOW SHOWERS UNDER SOUTHERLY FLOW WILL CONTINUE
OVER THE NEXT SEVERAL DAYS AS THE UPPER LOW MOVES NORTHEAST.
PRECIPITATION WILL BECOME MORE WIDESPREAD OVER ALEUTIANS TOMORROW
NIGHT INTO FRIDAY AS A NORTH PACIFIC LOW CROSSES INTO THE BERING.

.LONG TERM FORECAST...
MOIST SOUTHWEST FLOW WILL CONTINUE OVER MAINLAND AK THROUGH THE FIRST
PART OF NEXT WEEK. EXPECTING A SERIES OF SLOW MOVING NORTH PACIFIC
LOWS TO CROSS INTO THE BERING SEA...THEN MOVE NORTHEAST WHILE
DISSIPATING. AS A RESULT...PRECIPITATION CHANCES WILL REMAIN HIGH
OVER THE MAINLAND AND ALEUTIANS THROUGH NEXT WEEK.

.AER/ALU...WATCH/WARNING SUMMARY
PUBLIC...NONE
MARINE...GALE...155 175 176 411 AND 413.
FIRE WEATHER...NONE

NRH APR 09