Gale Warning 314, NWS Anchorage, AK

521 
FZAK62 PAFC 151759 AAA
OFFALU

OFFSHORE WATERS FORECAST...UPDATED
NATIONAL WEATHER SERVICE ANCHORAGE AK
1000 AM AKDT FRI APR 15 2011

UPDATED ZONE 414 

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.

PKZ499-160300-
400 AM AKDT FRI APR 15 2011
.SYNOPSIS FOR CENTRAL BERING SEA...
A 1013 MB LOW AT 51N 168W WILL MOVE TO 49N 177W AT 1005 MB BY LATE
SAT NIGHT. A 997 MB LOW AT 44N 170W SAT EVENING WILL BE NEAR 47N 
170W LATE SAT NIGHT. 
$$

PKZ411-160300-
BERING SEA OFFSHORE WEST OF 180 AND EAST OF THE INTERNATIONAL
DATELINE
400 AM AKDT FRI APR 15 2011

.TODAY...NE WIND 15 KT. SEAS 7 FT. 
.TONIGHT...NE WIND 20 KT. SEAS 7 FT. 
.SAT...NE WIND 15 TO 25 KT. SEAS 9 FT. FREEZING SPRAY NORTH OF 56N. 
.SAT NIGHT THROUGH TUE...NE WIND 30 KT. SEAS 13 FT. 
$$

PKZ412-160300-
BERING SEA OFFSHORE 171W TO 180 AND NORTH OF 56N
400 AM AKDT FRI APR 15 2011

.TODAY...NE WIND 20 KT. SEAS 5 FT. FREEZING SPRAY. 
.TONIGHT...NE WIND 20 KT. SEAS 7 FT. FREEZING SPRAY. 
.SAT...NE WIND 20 TO 30 KT. SEAS 9 FT. FREEZING SPRAY. 
.SAT NIGHT THROUGH TUE...E WIND 30 KT. SEAS 11 FT. 
$$

PKZ413-160300-
BERING SEA OFFSHORE 171W TO 180 AND SOUTH OF 56N
400 AM AKDT FRI APR 15 2011

...GALE WARNING SATURDAY...

.TODAY...NE WIND 15 TO 25 KT. SEAS 8 FT. FREEZING SPRAY E OF 176W. 
.TONIGHT...NE WIND 20 TO 30 KT. SEAS 10 FT. 
.SAT...NE WIND 25 TO 35 KT. SEAS 13 FT. 
.SAT NIGHT...E WIND 35 KT. SEAS 14 FT. 
.SUN...E WIND 40 KT. SEAS 16 FT. 
.MON...E WIND 30 KT. SEAS 14 FT. 
.TUE...E WIND 35 KT. SEAS 12 FT.  
$$

PKZ414-160300-
BERING SEA OFFSHORE EAST OF 171W
1000 AM AKDT FRI APR 15 2011

.TODAY...NE WIND 15 TO 25 KT. SEAS IN ICE FREE WATERS 7 FT. 
FREEZING SPRAY. 
.TONIGHT...NE WIND 15 TO 30 KT...STRONGEST SOUTH OF 56N. 
SEAS IN ICE FREE WATERS 7 FT. FREEZING SPRAY. 
.SAT...E WIND 15 TO 30 KT...STRONGEST SOUTH OF 56N. 
SEAS IN ICE FREE WATERS 9 FT. FREEZING SPRAY. 
.SAT NIGHT...E WIND 30 KT. SEAS IN ICE FREE WATERS 9 FT. 
.SUN...E WIND 35 KT. SEAS IN ICE FREE WATERS 9 FT. 
.MON...E WIND 30 KT. SEAS IN ICE FREE WATERS 9 FT. 
.TUE...NE WIND 20 KT. SEAS IN ICE FREE WATERS 5 FT.  
$$

802 
FZAK62 PAFC 152355
OFFALU

OFFSHORE WATERS FORECAST
NATIONAL WEATHER SERVICE ANCHORAGE AK
400 PM AKDT FRI APR 15 2011

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.

PKZ499-161500-
400 PM AKDT FRI APR 15 2011
.SYNOPSIS FOR CENTRAL BERING SEA...

A 1009 MB LOW NEAR 51N 166W WILL DISSIPATE AS IT TRACKS NEAR 
52N 173W SAT AFTERNOON. A PACIFIC LOW WILL TRACK TO 48N 172W 
SUN AFTERNOON.

$$

PKZ411-161500-
BERING SEA OFFSHORE WEST OF 180 AND EAST OF THE INTERNATIONAL
DATELINE
400 PM AKDT FRI APR 15 2011

.TONIGHT...NE WIND 20 KT. SEAS 7 FT. 
.SAT...NE WIND 25 KT. SEAS 9 FT. 
.SAT NIGHT...NE WIND 30 KT. SEAS 11 FT. 
.SUN...NE WIND 25 KT. SEAS 12 FT. 
.SUN NIGHT THROUGH WED...NE WIND 30 KT. SEAS 12 FT. 

$$

PKZ412-161500-
BERING SEA OFFSHORE 171W TO 180 AND NORTH OF 56N
400 PM AKDT FRI APR 15 2011

.TONIGHT...NE WIND 20 KT. SEAS 7 FT. FREEZING SPRAY E OF 174W. 
.SAT...NE WIND 25 KT. SEAS 9 FT. FREEZING SPRAY E OF 174W. 
.SAT NIGHT...NE WIND 25 KT. SEAS 9 FT. FREEZING SPRAY E OF 174W. 
.SUN AND SUN NIGHT...E WIND 25 KT. SEAS 9 FT. 
.MON...E WIND 30 KT. SEAS 10 FT. 
.TUE...E WIND 25 KT. SEAS 9 FT. 
.WED...NE WIND 30 KT. SEAS 9 FT.  

$$

PKZ413-161500-
BERING SEA OFFSHORE 171W TO 180 AND SOUTH OF 56N
400 PM AKDT FRI APR 15 2011

...GALE WARNING SATURDAY...

.TONIGHT...NE WIND INCREASING TO 25 KT. SEAS 10 FT. 
.SAT...NE WIND 25 TO 35 KT. SEAS 13 FT. 
.SAT NIGHT...E WIND 20 TO 30 KT. SEAS 13 FT. 
.SUN...E WIND 30 KT. SEAS 12 FT. 
.SUN NIGHT...E WIND 35 KT. SEAS 15 FT. 
.MON AND TUE...E WIND 35 KT. SEAS 13 FT. 
.WED...NE WIND 35 KT. SEAS 13 FT.  

$$

PKZ414-161500-
BERING SEA OFFSHORE EAST OF 171W
400 PM AKDT FRI APR 15 2011

.TONIGHT...NE WIND 20 TO 30 KT. SEAS IN ICE FREE WATERS 6 FT.
FREEZING SPRAY N OF 56N. 
.SAT...NE WIND 20 TO 30 KT. SEAS IN ICE FREE WATERS 8 FT. FREEZING
SPRAY N OF 56N. 
.SAT NIGHT...E WIND 15 TO 25 KT. SEAS IN ICE FREE WATERS 8 FT.
FREEZING SPRAY N OF 56N. 
.SUN THROUGH MON...E WIND 30 KT. SEAS IN ICE FREE WATERS 8 FT. 
.TUE...NE WIND 20 KT. SEAS IN ICE FREE WATERS 5 FT. 
.WED...NE WIND 30 KT. SEAS IN ICE FREE WATERS 7 FT.  

$$

238 
FZAK62 PAFC 161111
OFFALU

OFFSHORE WATERS FORECAST
NATIONAL WEATHER SERVICE ANCHORAGE AK
400 AM AKDT SAT APR 16 2011

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.

PKZ499-170300-
400 AM AKDT SAT APR 16 2011
.SYNOPSIS FOR CENTRAL BERING SEA...
A 1011 MB LOW AT 52N 168W WILL MOVE TO 51N 177W THIS EVENING AND
DISSIPATE TONIGHT. A 998 MB LOW AT 46N 170W LATE TONIGHT WILL MOVE 
TO 50N 172W BY LATE SUN NIGHT. 
$$

PKZ411-170300-
BERING SEA OFFSHORE WEST OF 180 AND EAST OF THE INTERNATIONAL
DATELINE
400 AM AKDT SAT APR 16 2011

.TODAY...NE WIND 25 KT. SEAS 9 FT. 
.TONIGHT AND SUN...NE WIND 30 KT. SEAS 12 FT. 
.SUN NIGHT AND MON...NE WIND 25 TO 35 KT. SEAS 13 FT. 
.TUE...E WIND 30 KT. SEAS 14 FT. 
.WED...NE WIND 30 KT. SEAS 13 FT.  

$$

PKZ412-170300-
BERING SEA OFFSHORE 171W TO 180 AND NORTH OF 56N
400 AM AKDT SAT APR 16 2011

.TODAY...NE WIND 30 KT. SEAS 9 FT. FREEZING SPRAY E OF 174W. 
.TONIGHT...NE WIND 30 KT. SEAS 9 FT. FREEZING SPRAY E OF 174W. 
.SUN...E WIND 25 KT. SEAS 8 FT. FREEZING SPRAY E OF 174W. 
.SUN NIGHT AND MON...E WIND 30 KT. SEAS 10 FT. 
.TUE...E WIND 25 KT. SEAS 9 FT. 
.WED...NE WIND 25 KT. SEAS 8 FT.  

$$

PKZ413-170300-
BERING SEA OFFSHORE 171W TO 180 AND SOUTH OF 56N
400 AM AKDT SAT APR 16 2011

...GALE WARNING THROUGH SUNDAY...

.TODAY...NE WIND 25 TO 35 KT. SEAS 12 FT. SNOW SHOWERS.
.TONIGHT...NE WIND 25 TO 35 KT. SEAS 13 FT. 
.SUN...E WIND 25 TO 35 KT. SEAS 12 FT. 
.SUN NIGHT AND MON...E WIND 40 KT. SEAS 15 FT. 
.TUE...E WIND 30 KT. SEAS 14 FT. 
.WED...NE WIND 30 KT. SEAS 10 FT.  

$$

PKZ414-170300-
BERING SEA OFFSHORE EAST OF 171W
400 AM AKDT SAT APR 16 2011

...GALE WARNING TODAY...

.TODAY...NE WIND 25 KT EXCEPT E 35 KT S OF 56N. SEAS IN ICE FREE
WATERS 9 FT. 
.TONIGHT AND SUN...E WIND 20 TO 30 KT. SEAS IN ICE FREE WATERS 9 FT. 
.SUN NIGHT AND MON...E WIND 35 KT. SEAS IN ICE FREE WATERS 9 FT. 
.TUE...E WIND 20 KT. SEAS IN ICE FREE WATERS 5 FT. 
.WED...NE WIND 30 KT. SEAS IN ICE FREE WATERS 8 FT.  

$$

JAM APR 11

057 
FZAK62 PAFC 162346
OFFALU

OFFSHORE WATERS FORECAST
NATIONAL WEATHER SERVICE ANCHORAGE AK
400 PM AKDT SAT APR 16 2011

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.

PKZ499-171500-
400 PM AKDT SAT APR 16 2011
.SYNOPSIS FOR CENTRAL BERING SEA...
A 1009 MB LOW NEAR 51N 175W WILL WEAKEN OVER THE NORTH PACIFIC 
SAT EVENING. A 998 MB LOW NEAR 42N 172W WILL MOVE TO 50N 173W 
MON AFTERNOON WITH LITTLE CHANGE IN STRENGTH.  

$$

PKZ411-171500-
BERING SEA OFFSHORE WEST OF 180 AND EAST OF THE INTERNATIONAL
DATELINE
400 PM AKDT SAT APR 16 2011

.TONIGHT...NE WIND 30 KT. SEAS 12 FT. 
.SUN AND SUN NIGHT...NE WIND 30 KT. SEAS 11 FT. 
.MON THROUGH TUE...NE WIND 30 KT. SEAS 12 FT. 
.WED...NE WIND 30 KT. SEAS 12 FT. 
.THU...NE WIND 25 KT. SEAS 8 FT. 

$$

PKZ412-171500-
BERING SEA OFFSHORE 171W TO 180 AND NORTH OF 56N
400 PM AKDT SAT APR 16 2011

.TONIGHT...NE WIND 30 KT. SEAS 9 FT. FREEZING SPRAY EAST OF 174W. 
.SUN...E WIND 25 KT. SEAS 8 FT. FREEZING SPRAY EAST OF 174W. 
.SUN NIGHT...E WIND 30 KT. SEAS 9 FT. 
.MON AND MON NIGHT...E WIND 35 KT. SEAS 11 FT. 
.TUE...E WIND 25 KT. SEAS 8 FT. 
.WED AND THU...NE WIND 25 KT. SEAS 8 FT. 

$$

PKZ413-171500-
BERING SEA OFFSHORE 171W TO 180 AND SOUTH OF 56N
400 PM AKDT SAT APR 16 2011

...GALE WARNING THROUGH SUNDAY NIGHT...

.TONIGHT...NE WIND 25 TO 35 KT. SEAS 13 FT. 
.SUN...E WIND 25 TO 35 KT. SEAS 12 FT. 
.SUN NIGHT...E WIND 40 KT. SEAS 15 FT. 
.MON AND MON NIGHT...E WIND 40 KT. SEAS 14 FT. 
.TUE...E WIND 30 KT. SEAS 13 FT. 
.WED AND THU...NE WIND 25 KT. SEAS 10 FT. 

$$

PKZ414-171500-
BERING SEA OFFSHORE EAST OF 171W
400 PM AKDT SAT APR 16 2011

...GALE WARNING SUNDAY NIGHT...

.TONIGHT...E WIND 25 KT. SEAS IN ICE FREE WATERS 8 FT. 
.SUN...E WIND 30 KT. SEAS IN ICE FREE WATERS 8 FT. 
.SUN NIGHT...E WIND 40 KT. SEAS IN ICE FREE WATERS 10 FT.
.MON...E WIND 40 KT. SEAS IN ICE FREE WATERS 10 FT. 
.MON NIGHT AND TUE...E WIND 25 KT. SEAS IN ICE FREE WATERS 6 FT. 
.WED AND THU...NE WIND 30 KT. SEAS IN ICE FREE WATERS 8 FT. 

$$

708 
FZAK62 PAFC 171116
OFFALU

OFFSHORE WATERS FORECAST
NATIONAL WEATHER SERVICE ANCHORAGE AK
400 AM AKDT SUN APR 17 2011

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.

PKZ499-180300-
400 AM AKDT SUN APR 17 2011
.SYNOPSIS FOR CENTRAL BERING SEA...
A 1000 MB LOW AT 49N 175W WILL MOVE TO 49N 175E LATE TONIGHT THEN
DISSIPATE BY MON AFTERNOON. A 996 MB LOW AT 45N 170W WILL MOVE TO 
49N 172W AT 994 MB LATE TONIGHT THEN TO 50N 170W AT 998 MB LATE MON
NIGHT.
$$

PKZ411-180300-
BERING SEA OFFSHORE WEST OF 180 AND EAST OF THE INTERNATIONAL
DATELINE
400 AM AKDT SUN APR 17 2011

.TODAY...NE WIND 30 KT. SEAS 12 FT. 
.TONIGHT AND MON...NE WIND 30 KT. SEAS 11 FT. 
.MON NIGHT...NE WIND 30 KT. SEAS 12 FT. 
.TUE...E WIND 30 KT. SEAS 12 FT. 
.WED...NE WIND 25 KT. SEAS 10 FT. 
.THU...NE WIND 20 KT. SEAS 9 FT. 

$$

PKZ412-180300-
BERING SEA OFFSHORE 171W TO 180 AND NORTH OF 56N
400 AM AKDT SUN APR 17 2011

.TODAY...E WIND 25 KT. SEAS 8 FT. 
.TONIGHT AND MON...E WIND 30 KT. SEAS 10 FT. 
.MON NIGHT...E WIND 30 KT. SEAS 11 FT. 
.TUE...E WIND 25 KT. SEAS 9 FT. 
.WED AND THU...NE WIND 25 KT. SEAS 10 FT. 

$$

PKZ413-180300-
BERING SEA OFFSHORE 171W TO 180 AND SOUTH OF 56N
400 AM AKDT SUN APR 17 2011

...GALE WARNING THROUGH MONDAY...

.TODAY...E WIND 25 TO 35 KT. SEAS 12 FT. 
.TONIGHT...E WIND 40 KT. SEAS 15 FT. 
.MON...NE WIND 35 KT. SEAS 17 FT. 
.MON NIGHT AND TUE...E WIND 30 KT. SEAS 13 FT. 
.WED AND THU...NE WIND 30 KT. SEAS 12 FT. 

$$

PKZ414-180300-
BERING SEA OFFSHORE EAST OF 171W
400 AM AKDT SUN APR 17 2011

...GALE WARNING TONIGHT AND MONDAY...

.TODAY...E WIND 20 TO 30 KT. SEAS IN ICE FREE WATERS 7 FT. PATCHY
FOG.
.TONIGHT AND MON...E WIND 25 TO 35 KT. SEAS IN ICE FREE WATERS 7 TO
11 FT. PATCHY FOG.
.MON NIGHT...E WIND 30 KT. SEAS IN ICE FREE WATERS 8 FT. 
.TUE...NE WIND 20 KT. SEAS IN ICE FREE WATERS 6 FT. 
.WED AND THU...NE WIND 30 KT. SEAS IN ICE FREE WATERS 11 FT. 

$$

JAM APR 11

873 
FZAK62 PAFC 172346
OFFALU

OFFSHORE WATERS FORECAST
NATIONAL WEATHER SERVICE ANCHORAGE AK
400 PM AKDT SUN APR 17 2011

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.

PKZ499-181500-
400 PM AKDT SUN APR 17 2011
.SYNOPSIS FOR CENTRAL BERING SEA...
A 993 MB LOW NEAR 48N 173W WILL REMAIN NEARLY STATIONARY AND WEAKEN
TO 1000 MB NEAR 50N 175W TUE AFTERNOON.

$$

PKZ411-181500-
BERING SEA OFFSHORE WEST OF 180 AND EAST OF THE INTERNATIONAL
DATELINE
400 PM AKDT SUN APR 17 2011

.TONIGHT...E WIND 30 KT. EXCEPT NORTH OF 56N...NE WIND 25 KT. SEAS 11
FT. 
.MON AND MON NIGHT...NE WIND 30 KT. SEAS 11 FT. 
.TUE...E WIND 25 KT. SEAS 12 FT. 
.TUE NIGHT AND WED...NE WIND 30 KT. SEAS 11 FT. 
.THU AND FRI...NE WIND 20 KT. SEAS 8 FT.

$$

PKZ412-181500-
BERING SEA OFFSHORE 171W TO 180 AND NORTH OF 56N
400 PM AKDT SUN APR 17 2011

.TONIGHT...E WIND 25 KT. SEAS 8 FT. AREAS OF FOG. 
.MON AND MON NIGHT...E WIND 30 KT. SEAS 11 FT. AREAS OF FOG. 
.TUE THROUGH WED...NE WIND 25 KT. SEAS 9 FT. 
.THU AND FRI...NE WIND 25 KT. SEAS 9 FT. 

$$

PKZ413-181500-
BERING SEA OFFSHORE 171W TO 180 AND SOUTH OF 56N
400 PM AKDT SUN APR 17 2011

...GALE WARNING THROUGH MONDAY...

.TONIGHT...NE WIND 35 KT. SEAS 15 FT. 
.MON...NE WIND 35 KT. SEAS 16 FT. 
.MON NIGHT...E WIND 30 KT. SEAS 13 FT. 
.TUE...E WIND 25 KT. SEAS 13 FT. 
.TUE NIGHT AND WED...NE WIND 30 KT. SEAS 10 FT. 
.THU...NE WIND 30 KT. SEAS 13 FT. 
.FRI...NE WIND 20 KT. SEAS 9 FT.  

$$

PKZ414-181500-
BERING SEA OFFSHORE EAST OF 171W
400 PM AKDT SUN APR 17 2011

...GALE WARNING THROUGH MONDAY...

.TONIGHT...E WIND 35 KT. EXCEPT NORTH OF 56N...E WIND 25 KT. SEAS IN
ICE FREE WATERS 10 FT. AREAS OF FOG. 
.MON...E WIND 35 KT. EXCEPT NORTH OF 56N...E WIND 25 KT. SEAS IN ICE
FREE WATERS 11 FT. AREAS OF FOG. 
.MON NIGHT...NE WIND 30 KT. SEAS IN ICE FREE WATERS 9 FT. 
.TUE AND TUE NIGHT...NE WIND 20 KT. SEAS IN ICE FREE WATERS 6 FT. 
.WED...NE WIND 30 KT. SEAS IN ICE FREE WATERS 9 FT. 
.THU...NE WIND 30 KT. SEAS IN ICE FREE WATERS 12 FT. 
.FRI...N WIND 25 KT. SEAS IN ICE FREE WATERS 9 FT.  

$$

927 
FZAK62 PAFC 181136
OFFALU

OFFSHORE WATERS FORECAST
NATIONAL WEATHER SERVICE ANCHORAGE AK
400 AM AKDT MON APR 18 2011

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.

PKZ499-190300-
400 AM AKDT MON APR 18 2011
.SYNOPSIS FOR CENTRAL BERING SEA...
A 994 MB LOW NEAR 48N 172W WILL MOVE TO 44N 174W AND STRENGTHEN TO
989 MB TUE NIGHT.
$$

PKZ411-190300-
BERING SEA OFFSHORE WEST OF 180 AND EAST OF THE INTERNATIONAL
DATELINE
400 AM AKDT MON APR 18 2011

.TODAY...E WIND 25 KT. SEAS 10 FT. PATCHY FOG. 
.TONIGHT AND TUE...NE WIND 30 KT. SEAS 12 FT. 
.TUE NIGHT THROUGH THU...NE WIND 30 KT. SEAS 11 FT. 
.FRI...N WIND 20 KT. SEAS 9 FT.  

$$

PKZ412-190300-
BERING SEA OFFSHORE 171W TO 180 AND NORTH OF 56N
400 AM AKDT MON APR 18 2011

.TODAY...E WIND 30 KT. SEAS 10 FT. PATCHY FOG. 
.TONIGHT...E WIND 30 KT. SEAS 11 FT. PATCHY FOG. 
.TUE...NE WIND 30 KT. SEAS 10 FT. 
.TUE NIGHT AND WED...NE WIND 25 KT. SEAS 8 FT. 
.THU...NE WIND 35 KT. SEAS 11 FT. 
.FRI...N WIND 30 KT. SEAS 10 FT.  

$$

PKZ413-190300-
BERING SEA OFFSHORE 171W TO 180 AND SOUTH OF 56N
400 AM AKDT MON APR 18 2011

...GALE WARNING TODAY...

.TODAY...NE WIND 35 KT. SEAS 14 FT. 
.TONIGHT...NE WIND 30 KT. SEAS 13 FT. 
.TUE...E WIND 30 KT. SEAS 12 FT. 
.TUE NIGHT...E WIND 30 KT. SEAS 11 FT. 
.WED...NE WIND 30 KT. SEAS 11 FT. 
.THU...NE WIND 35 KT. SEAS 14 FT. 
.FRI...N WIND 30 KT. SEAS 14 FT.  

$$

PKZ414-190300-
BERING SEA OFFSHORE EAST OF 171W
400 AM AKDT MON APR 18 2011

...GALE WARNING TODAY...

.TODAY...E WIND 25 KT...EXCEPT 35 KT S OF 56N. SEAS IN ICE FREE
WATERS 10 FT. 
.TONIGHT...NE WIND 30 KT. SEAS IN ICE FREE WATERS 9 FT. 
.TUE...NE WIND 25 KT. SEAS IN ICE FREE WATERS 6 FT. 
.TUE NIGHT...NE WIND 20 KT. SEAS IN ICE FREE WATERS 5 FT. 
.WED...NE WIND 30 KT. SEAS IN ICE FREE WATERS 8 FT. 
.THU...NE WIND 35 KT. SEAS IN ICE FREE WATERS 11 FT. 
.FRI...N WIND 35 KT. SEAS IN ICE FREE WATERS 12 FT.  

$$

JAM APR 11

148 
FZAK62 PAFC 182357
OFFALU

OFFSHORE WATERS FORECAST
NATIONAL WEATHER SERVICE ANCHORAGE AK
400 PM AKDT MON APR 18 2011

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.

PKZ499-191500-
400 PM AKDT MON APR 18 2011
.SYNOPSIS FOR CENTRAL BERING SEA...
HIGH PRESSURE PERSISTS OVER THE NORTHERN BERING THROUGH THE FORECAST
PERIOD. A 998 MB LOW NEAR 49N 170W MOVES TO 50N 175W LATE WED MORNING
AT 994 MB AND THEN MERGES WITH A DEVELOPING LOW TO THE EAST. A 988 MB
LOW NEAR 45N 168W LATE WED MORNING MOVES TO 49N 175W LATE WED NIGHT
AT 983 MB.
$$

PKZ411-191500-
BERING SEA OFFSHORE WEST OF 180 AND EAST OF THE INTERNATIONAL
DATELINE
400 PM AKDT MON APR 18 2011

.TONIGHT...NE WIND 30 KT. SEAS 11 FT. 
.TUE AND TUE NIGHT...NE WIND 25 KT. SEAS 11 FT. 
.WED THROUGH THU...NE WIND 30 KT. SEAS 11 FT. 
.FRI...N WIND 25 KT. SEAS 10 FT. 
.SAT...N WIND 20 KT. SEAS 6 FT.  

$$

PKZ412-191500-
BERING SEA OFFSHORE 171W TO 180 AND NORTH OF 56N
400 PM AKDT MON APR 18 2011

.TONIGHT...E WIND 30 KT. SEAS 11 FT. PATCHY FOG. 
.TUE AND TUE NIGHT...NE WIND 25 KT. SEAS 10 FT. 
.WED AND WED NIGHT...NE WIND 25 KT. SEAS 8 FT. 
.THU...NE WIND 35 KT. SEAS 11 FT. 
.FRI...N WIND 30 KT. SEAS 11 FT. 
.SAT...N WIND 25 KT. SEAS 8 FT.  

$$

PKZ413-191500-
BERING SEA OFFSHORE 171W TO 180 AND SOUTH OF 56N
400 PM AKDT MON APR 18 2011

.TONIGHT...NE WIND 30 KT. SEAS 13 FT. 
.TUE AND TUE NIGHT...NE WIND 30 KT. SEAS 12 FT. 
.WED AND WED NIGHT...NE WIND 30 KT. SEAS 11 FT. 
.THU...NE WIND 35 KT. SEAS 14 FT. 
.FRI...N WIND 30 KT. SEAS 14 FT. 
.SAT...N WIND 25 KT. SEAS 10 FT.  

$$

PKZ414-191500-
BERING SEA OFFSHORE EAST OF 171W
400 PM AKDT MON APR 18 2011

.TONIGHT...NE WIND 30 KT. SEAS IN ICE FREE WATERS 9 FT. 
.TUE AND TUE NIGHT...NE WIND 25 KT. SEAS IN ICE FREE WATERS 7 FT. 
.WED AND WED NIGHT...NE WIND 30 KT. SEAS IN ICE FREE WATERS 7 FT. 
.THU...NE WIND 35 KT. SEAS IN ICE FREE WATERS 11 FT. 
.FRI...N WIND 35 KT. SEAS IN ICE FREE WATERS 12 FT. 
.SAT...N WIND 30 KT. SEAS IN ICE FREE WATERS 9 FT.  

$$

SOUTHCENTRAL AND SOUTHWEST ALASKA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE ANCHORAGE AK
1220 PM AKDT THU APR 14 2011

.ANALYSIS AND UPPER LEVELS...A HIGH AMPLITUDE RIDGE IS PARKED OVER
THE WESTERN BERING/EASTERN RUSSIA. THE HIGH CENTER HAS BECOME
CLOSED OFF AND IS BEGINNING TO MOVE NORTHWARD OVER EASTERN RUSSIA.
DOWNSTREAM OF THE RIDGE IS A LARGE BROAD CLOSED LOW EXTENDING FROM
THE EASTERN BERING TO SOUTHEAST ALASKA. MULTIPLE LOW CENTERS AND
SHORT-WAVES ARE EMBEDDED WITHIN THE BROADER CIRCULATION. THERE ARE
TWO FEATURES OF NOTE THIS MORNING. A SHORT-WAVE AND WEAK SURFACE
LOW ARE DROPPING SOUTHWARD ACROSS THE CENTRAL BERING WITH ARCTIC
AIR FEEDING IN BEHIND. THIS IS PRODUCING AN AREA OF SNOW FROM THE
PRIBILOFS SOUTHWARD TO THE CENTRAL AND EASTERN ALEUTIANS. WELL TO
THE EAST...A WEAK SHORT-WAVE IS TRACKING WESTWARD ACROSS PRINCE
WILLIAM SOUND AND THE KENAI PENINSULA. RADAR IMAGERY AND OBSERVATIONS
SHOW THE BULK OF PRECIP FALLING OVER WESTERN PRINCE WILLIAM SOUND.
THE AIR MASS ON THE WEST SIDE OF THE CHUGACH AND KENAI MOUNTAINS
IS VERY DRY WITH DEW POINT DEPRESSIONS OF 10 TO 20 DEGREES...SO
DON'T EXPECT MORE THAN A FEW SHOWERS TO SURVIVE THE JOURNEY ACROSS
THE MOUNTAINS.

.MODEL DISCUSSION...MODELS ARE IN DECENT AGREEMENT THROUGH THE NEXT
FEW DAYS. THERE ARE SOME MINOR DIFFERENCES IN LOW POSITIONS SOUTH
OF THE ALEUTIANS OVER THE WEEKEND. WILL GO WITH AN AVERAGE POSITION
AND STRENGTH UNTIL MODELS COME INTO BETTER AGREEMENT.

.SHORT TERM FORECAST...

SOUTHERN MAINLAND...SHORT-WAVE WILL WEAKEN AS IT CONTINUES WESTWARD
ACROSS THE KENAI PENINSULA THIS AFTERNOON AND THEN INTO SOUTHWEST
ALASKA TONIGHT AND DON'T EXPECT MORE THAN SCATTERED SHOWERS FOR
THE AREAS IN ITS TRACK. THE PATTERN WILL THEN BEGIN TO EVOLVE THE
NEXT FEW DAYS AS THE RIDGE OVER THE WESTERN BERING/EASTERN RUSSIA
BUILDS EASTWARD OVER TOP OF THE LOW COMPLEX WHILE AN UPPER LOW
CURRENTLY OVER BRISTOL BAY TRACKS WESTWARD ALONG THE ALEUTIANS
UNDERNEATH THE RIDGE. A COUPLE UPPER LEVEL SHORT-WAVES WILL DROP
DOWN FROM THE NORTH PRIOR TO THE RIDGE BUILDING INTO SOUTHCENTRAL.
THE FIRST WILL MOVE THROUGH SATURDAY AFTERNOON DURING MAXIMUM
HEATING. AS IS TYPICAL THIS TIME OF YEAR EXPECT CONVECTION TO
FORM PRIMARILY OVER THE MOUNTAINS. WEAK NORTHERLY FLOW IN THIS CASE
WILL THEN CAUSE SHOWERS TO MOVE SLOWLY SOUTHWARD OFF THE MOUNTAINS.
MODELS INDICATE TOTAL TOTALS IN THE 50 TO 60 RANGE ALONG THE
MOUNTAINS ALONG WITH 100 TO 200 J/KG CAPE ALONG THE ALASKA RANGE.
THIS INDICATES THERE MIGHT BE JUST ENOUGH INSTABILITY TO SEE AN
ISOLATED LIGHTNING STRIKE. IN ANY CASE...INSTABILITY WILL NOT BE
WIDESPREAD ENOUGH TO PRODUCE MORE THAN SCATTERED SHOWERS. ANOTHER
SHORT-WAVE WILL MOVE ACROSS THE SOUTHERN MAINLAND SATURDAY AFTERNOON
AND EVENING...SO WILL LIKELY SEE SCATTERED CONVECTION ONCE AGAIN.
STRONG RIDGE WITH MUCH MORE STABLE AIR WILL MOVE IN BEHIND THIS
SHORT-WAVE SO CONVECTION WILL BE MUCH LESS LIKELY ON SUNDAY.
MEANWHILE...WITH QUITE A BIT OF SUN EACH DAY AND OFFSHORE FLOW
TEMPERATURES WILL APPROACH 50 DEGREES EACH AFTERNOON OVER INLAND
LOCATIONS WHILE NIGHTTIME TEMPERATURES WILL CONTINUE TO BOTTOM OUT
NEAR OR BELOW FREEZING.

BERING SEA/ALEUTIANS...THE SURFACE LOW OVER THE SOUTH CENTRAL BERING
SEA WILL DROP SOUTH OF THE ALEUTIANS TONIGHT AND THEN WILL BE CARRIED
WESTWARD ALONG THE ALEUTIANS BY THE UPPER LOW CENTER FRIDAY NIGHT
AND SATURDAY. MEANWHILE...COLD AIR ADVECTION MOVING IN BEHIND THE
LOW TODAY WILL SPREAD SOUTH AND WEST ACROSS THE BERING SEA THE NEXT
COUPLE DAYS PRODUCING LOCALLY GUSTY WINDS AND SNOW SHOWERS. THE
LOCATION OF THE RIDGE OVER THE WESTERN BERING WILL FORCE THE LOW
SOUTHWARD AS IT REACHES THE WESTERN ALEUTIANS. THIS IN TURN WILL
PULL A PACIFIC LOW NORTHWARD TOWARD THE ALEUTIANS ON SUNDAY. WITH
THE RIDGE RE-CENTERING ITSELF TO THE NORTH BY THIS TIME...EXPECT
THE BULK OF PRECIP AND WINDS TO REMAIN RIGHT ALONG THE ALEUTIANS.

.LONG TERM FORECAST...UPPER RIDGE WILL BECOME VERY NARROW AND
ELONGATED BY THE BEGINNING OF NEXT WEEK AND WILL RECEDE BACK TO
EASTERN RUSSIA AS WE HEAD THROUGH THE WEEK. NORTHERLY FLOW ALOFT
WILL DOMINATE THE MAINLAND NEXT WEEK. UNDER THIS REGIME EXPECT
DIURNAL CONVECTION TO BECOME THE NORM. OUT WEST...THE LOW ALONG THE
ALEUTIANS AT THE END OF THE SHORT-TERM WILL WEAKEN EARLY NEXT WEEK.
HOWEVER...A BROAD ELONGATED TROUGH WILL REMAIN IN PLACE ALONG AND
SOUTH OF THE ALEUTIANS...SO EXPECT ADDITIONAL LOWS TO AFFECT THE
REGION THROUGH THE WEEK...BUT NONE OF THESE IS EXPECTED TO VERY
STRONG.

.AER/ALU...WATCH/WARNING SUMMARY
PUBLIC...NONE.
MARINE...NONE.
FIRE WEATHER...NONE.

SEB APR 11