Gale Warning 201, NWS Anchorage, AK

907 
FZAK62 PAFC 221153
OFFALU

OFFSHORE WATERS FORECAST
NATIONAL WEATHER SERVICE ANCHORAGE AK
400 AM AKDT MON MAR 22 2010

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.

PKZ499-230200-
400 AM AKDT MON MAR 22 2010
.SYNOPSIS FOR CENTRAL BERING SEA...

HIGH PRESSURE OVER THE CENTRAL BERING WILL SHIFT EAST THROUGH
TUE...THEN WEAKEN TUE NIGHT. A FRONT WILL MOVE ACROSS THE WESTERN
ALEUTIANS MONDAY TO THE CENTRAL ALEUTIANS MON NIGHT. A 996 MB LOW
WILL DEVELOP ALONG THE FRONT NEAR 53N 175W TUE AFTERNOON AND
STRENGTHEN TO 988MB AT 54N 169W TUE NIGHT.

$$

PKZ411-230200-
BERING SEA OFFSHORE WEST OF 180 AND EAST OF THE INTERNATIONAL
DATELINE
400 AM AKDT MON MAR 22 2010

...STORM WARNING TODAY...

.TODAY...SE WIND 40 TO 50 KT. SEAS 20 FT. PATCHY FOG. RAIN AND SNOW. 
.TONIGHT...SE TO S WIND 35 TO 45 KT. SEAS 20 FT. PATCHY FOG. SNOW
SHOWERS AND RAIN. 
.TUE...SE TO SW WIND 20 TO 30 KT. SEAS 12 TO 19 FT. SNOW.
.TUE...NW WIND 20 KT. SEAS 17 FT. 
.WED...N WIND 20 KT. SEAS 14 FT. 
.THU AND FRI...N WIND 20 KT. SEAS 9 FT. 

$$

PKZ412-230200-
BERING SEA OFFSHORE 171W TO 180 AND NORTH OF 56N
400 AM AKDT MON MAR 22 2010

...GALE WARNING THROUGH TONIGHT...
...HEAVY FREEZING SPRAY WARNING TUESDAY...

.TODAY...W OF 175W...SE WIND 25 TO 35 KT. SEAS 6 TO 12 FT. E OF
175W...E WIND 15 KT. SEAS 5 FT. 
.TONIGHT...W OF 175W...SE WIND 30 TO 40 KT. SEAS 9 TO 14 FT. PATCHY
FOG. FREEZING SPRAY. E OF 175W... E WIND 10 TO 20 KT. SEAS 5 TO 8 FT.
FREEZING SPRAY. 
.TUE...E WIND 20 TO 30 KT. SEAS 9 TO 12 FT. PATCHY FOG. SNOW. HEAVY
FREEZING SPRAY. 
.TUE NIGHT...NE WIND 25 KT. SEAS 12 FT. 
.WED AND THU...NE WIND 20 KT. SEAS 11 FT. 
.FRI...N WIND 20 KT. SEAS 6 FT.  

$$

PKZ413-230200-
BERING SEA OFFSHORE 171W TO 180 AND SOUTH OF 56N
400 AM AKDT MON MAR 22 2010

...GALE WARNING THROUGH TONIGHT...

.TODAY...W OF 175W...SE WIND 25 TO 35 KT. SEAS 6 TO 9 FT. PATCHY FOG.
E OF 175W...SE WIND 15 KT. SEAS 6 FT. 
.TONIGHT...W OF 175W...SE WIND 30 TO 40 KT. SEAS 13 FT. PATCHY FOG. 
E OF 175W...SE WIND 10 TO 20 KT. SEAS 7 FT. 
.TUE...VARIABLE WIND 15 TO 25 KT. SEAS 7 TO 13 FT. PATCHY FOG. SNOW
SHOWERS AND RAIN.
.TUE NIGHT THROUGH THU...NW TO N WIND 20 TO 25 KT. SEAS 12 FT. 
.FRI...N WIND 20 KT. SEAS 7 FT.  

$$

PKZ414-230200-
BERING SEA OFFSHORE EAST OF 171W
400 AM AKDT MON MAR 22 2010

.TODAY...N WIND 15 KT. SEAS IN ICE FREE WATERS 4 FT. FREEZING SPRAY.
.TONIGHT AND TUE...VARIABLE WIND 10 KT. SEAS IN ICE FREE WATERS 3 FT.
.TUE NIGHT...NE WIND 15 KT. SEAS IN ICE FREE WATERS 5 FT. 
.WED...NE WIND 20 KT. SEAS IN ICE FREE WATERS 9 FT. 
.THU...NE WIND 15 KT. SEAS IN ICE FREE WATERS 8 FT. 
.FRI...N WIND 25 KT. SEAS IN ICE FREE WATERS 6 FT.  

$$

625 
FZAK62 PAFC 222342
OFFALU

OFFSHORE WATERS FORECAST
NATIONAL WEATHER SERVICE ANCHORAGE AK
400 PM AKDT MON MAR 22 2010

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.

PKZ499-231400-
400 PM AKDT MON MAR 22 2010
.SYNOPSIS FOR CENTRAL BERING SEA...
HIGH PRESSURE OVER THE EASTERN BERING WILL WEAKEN THROUGH TUE. A
WEATHER FRONT OVER THE WESTERN ALEUTIANS WILL MOVE INTO THE EASTERN
ALEUTIANS TUE NIGHT AND INTO THE ALASKA PENINSULA WED AFTERNOON. A
998 MB LOW WILL DEVELOP ALONG THE FRONT NEAR 55N 180 TUE MORNING AND
WILL STRENGTHEN TO 988 MB NEAR 55N 169W WED AFTERNOON.
$$

PKZ411-231400-
BERING SEA OFFSHORE WEST OF 180 AND EAST OF THE INTERNATIONAL
DATELINE
400 PM AKDT MON MAR 22 2010

...GALE WARNING THROUGH TUESDAY...

.TONIGHT...SE TO S WIND 30 TO 40 KT. SEAS 18 FT. PATCHY FOG. RAIN 
AND SNOW SHOWERS. 
.TUE...S TO SW WIND 25 TO 35 KT. SEAS 18 FT. SNOW SHOWERS. 
.TUE NIGHT...NW WIND 25 KT. SEAS 17 FT. FREEZING SPRAY N OF 55N. 
.WED...N WIND 25 KT. SEAS 14 FT. 
.WED NIGHT THROUGH SAT...N WIND 20 KT. SEAS 9 FT. 

$$

PKZ412-231400-
BERING SEA OFFSHORE 171W TO 180 AND NORTH OF 56N
400 PM AKDT MON MAR 22 2010

...GALE WARNING TONIGHT...
...HEAVY FREEZING SPRAY WARNING TUESDAY AND TUESDAY NIGHT...

.TONIGHT...E WIND 25 TO 35 KT. SEAS 9 FT. PATCHY FOG. FREEZING SPRAY.

.TUE...E WIND 20 TO 30 KT. SEAS 11 FT. PATCHY FOG. SNOW. HEAVY
FREEZING SPRAY. 
.TUE NIGHT...E WIND 25 KT. SEAS 12 FT. PATCHY FOG. HEAVY FREEZING
SPRAY. 
.WED...NE WIND 20 KT. SEAS 12 FT. 
.WED NIGHT...VARIABLE WIND 10 KT. SEAS 9 FT. 
.THU AND FRI...N WIND 20 KT. SEAS 8 FT. 
.SAT...NE WIND 20 KT. SEAS 6 FT.  

$$

PKZ413-231400-
BERING SEA OFFSHORE 171W TO 180 AND SOUTH OF 56N
400 PM AKDT MON MAR 22 2010

...GALE WARNING TONIGHT...

.TONIGHT...W OF 175 W...SE WIND 40 KT. SEAS 12 FT. E OF 175W...SE
WIND 10 TO 20 KT. SEAS 6 FT. PATCHY FOG. RAIN.
.TUE...SE TO SW WIND 30 KT. SEAS 12 FT. PATCHY FOG. SNOW AND RAIN
SHOWERS.
.TUE NIGHT...NW WIND 30 KT. SEAS 13 FT. PATCHY FOG. SNOW SHOWERS. 
.WED...N WIND 25 KT. SEAS 12 FT. 
.WED NIGHT THROUGH FRI...N WIND 20 KT. SEAS 10 FT. 
.SAT...N WIND 15 KT. SEAS 6 FT.  

$$

PKZ414-231400-
BERING SEA OFFSHORE EAST OF 171W
400 PM AKDT MON MAR 22 2010

.TONIGHT...N WIND 15 KT. SEAS IN ICE FREE WATERS 4 FT. PATCHY FOG.
FREEZING SPRAY. 
.TUE AND TUE NIGHT...NE WIND 15 KT. SEAS IN ICE FREE WATERS 4 FT.
PATCHY FOG. FREEZING SPRAY.
.WED...E WIND 20 KT. SEAS IN ICE FREE WATERS 8 FT. 
.WED NIGHT AND THU...NE WIND 15 KT. SEAS IN ICE FREE WATERS 7 FT. 
.FRI...N WIND 25 KT. SEAS IN ICE FREE WATERS 6 FT. 
.SAT...N WIND 20 KT. SEAS IN ICE FREE WATERS 6 FT.  

$$

705 
FZAK62 PAFC 231125
OFFALU

OFFSHORE WATERS FORECAST
NATIONAL WEATHER SERVICE ANCHORAGE AK
400 AM AKDT TUE MAR 23 2010

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.

PKZ499-240200-
400 AM AKDT TUE MAR 23 2010
.SYNOPSIS FOR CENTRAL BERING SEA...

A WEATHER FRONT OVER THE WESTERN ALEUTIANS WILL MOVE TO THE CENTRAL
ALEUTIANS TUE EVENING AND TO THE ALASKA PENINSULA WED MORNING. A 
995 MB LOW FORMS NEAR 54N 180W TUE MORNING AND STRENGTHENS TO 985 MB
AT 55N 176W WED MORNING. THE LOW MOVES TO 56N 173W AT 984 MB WED
NIGHT.

$$

PKZ411-240200-
BERING SEA OFFSHORE WEST OF 180 AND EAST OF THE INTERNATIONAL
DATELINE
400 AM AKDT TUE MAR 23 2010

.TODAY...N OF 56N...E WIND 20 TO 30 KT. SEAS 13 TO 18 FT. SNOW
SHOWERS. FREEZING SPRAY. S OF 56N...W WIND 15 TO 25 KT. SEAS 10 TO 
18 FT. SNOW SHOWERS. 
.TONIGHT AND WED...N OF 56N...NE WIND 15 TO 25 KT. FREEZING SPRAY. S
OF 56N...W WIND 10 TO 20 KT. SEAS 10 TO 16 FT.
.WED NIGHT...N WIND 15 KT. SEAS 12 FT. 
.THU AND FRI...N WIND 20 KT. SEAS 9 FT. 
.SAT...NE WIND 25 KT. SEAS 8 FT.  

$$

PKZ412-240200-
BERING SEA OFFSHORE 171W TO 180 AND NORTH OF 56N
400 AM AKDT TUE MAR 23 2010

...HEAVY FREEZING SPRAY WARNING THROUGH WEDNESDAY...

.TODAY...E WIND 20 TO 30 KT. SEAS 6 TO 11 FT. PATCHY FOG. SNOW. 
HEAVY FREEZING SPRAY. 
.TONIGHT AND WED...NE WIND 15 TO 25 KT. SEAS 7 TO 12 FT. PATCHY FOG.
HEAVY FREEZING SPRAY. 
.WED NIGHT...NE WIND 15 KT. SEAS 10 FT. 
.THU AND FRI...NE WIND 20 KT. SEAS 8 FT. 
.SAT...NE WIND 25 KT. SEAS 7 FT.  

$$

PKZ413-240200-
BERING SEA OFFSHORE 171W TO 180 AND SOUTH OF 56N
400 AM AKDT TUE MAR 23 2010

.TODAY...SE WIND 20 TO 30 KT. SEAS 7 TO 13 FT. PATCHY FOG. SNOW AND
RAIN SHOWERS. 
.TONIGHT...N OF 55N...E WIND 15 TO 25 KT. SEAS 7 TO 13 FT. S OF
55N...W WIND 30 KT. SEAS 13 FT. PATCHY FOG. SNOW SHOWERS. 
.WED...W WIND 25 KT. SEAS 13 FT. FREEZING SPRAY. 
.WED NIGHT AND THU...NW WIND 20 KT. SEAS 9 TO 12 FT. 
.FRI AND SAT...N TO NE WIND 20 KT. SEAS 7 TO 10 FT. 

$$

PKZ414-240200-
BERING SEA OFFSHORE EAST OF 171W
400 AM AKDT TUE MAR 23 2010

.TODAY...VARIABLE WIND 15 KT. SEAS IN ICE FREE WATERS 2 FT. PATCHY
FOG. 
.TONIGHT...E WIND 10 TO 20 KT. SEAS IN ICE FREE WATERS 2 TO 5 FT.
PATCHY FOG. FREEZING SPRAY. 
.WED...VARIABLE WIND 15 KT. SEAS IN ICE FREE WATERS 8 FT. 
PATCHY FOG.
.WED NIGHT...SE WIND 15 KT. SEAS IN ICE FREE WATERS 8 FT. 
.THU...NE WIND 15 KT. SEAS IN ICE FREE WATERS 7 FT.
.FRI...N WIND 15 KT. SEAS IN ICE FREE WATERS 6 FT. 
.SAT...N WIND 25 KT. SEAS IN ICE FREE WATERS 5 FT.  

$$

AREA FORECAST DISCUSSION
SOUTHCENTRAL AND SOUTHWEST ALASKA
140 PM AKDT SUN MAR 21 2010

.ANALYSIS AND UPPER LEVELS...
HIGH AMPLITUDE TROUGH OVER EASTERN SIBERIA RESULTING IN A DOWNSTREAM
RIDGE CENTERED OVER THE WESTERN BERING SEA. A BROAD TROUGH PERSISTS
OVER MUCH OF MAINLAND ALASKA WITH THE ANCHOR LOW LOCATED WELL SOUTH
OF OUR FORECAST AREA OVER THE NORTH PACIFIC. AT THE SURFACE...HIGH
PRESSURE CONTINUES TO DOMINATE THE EASTERN BERING SEA...SURROUNDED BY
TWO WEAK SURFACE TROUGHS WITH LITTLE TO NO PRECIPITATION ASSOCIATED
WITH THEM.

.MODEL DISCUSSION...
MODELS HAVE BEEN INCONSISTENT WITH THE WEAK SURFACE PATTERN ALTHOUGH
UPPER LEVELS AND SYNOPTICALLY LOOKING SIMILAR. THE 12Z RUNS ARE IN
FAIR AGREEMENT...ALTHOUGH GIVE A SLIGHT EDGE TO THE NAM BASED ON RUN
TO RUN CONSISTENCY AND CONTINUITY.

.SHORT TERM FORECAST...
PRECIPITATION LIMITED TO THE COASTAL AREAS THIS AFTERNOON. THE
COVERAGE WILL INCREASE OVERNIGHT AS A SHORT WAVE ROTATES SOUTHWARD
OUT OF BRISTOL BAY INTO THE WESTERN GULF OF ALASKA. AT THE SAME
TIME...ANOTHER SHORT WAVE IS DROPPING OUT OF THE NORTHERN YUKON
TERRITORY. THE TWO SHORT WAVES COUPLED WITH SOME JET SUPPORT FROM THE
NORTHERN PACIFIC WILL HELP DEVELOP A SURFACE LOW MONDAY THAT WILL
BRING GALE FORCE WINDS ALONG THE NORTH GULF COAST MONDAY NIGHT.
CLOUDS AND PRECIPITATION SHOULD REMAIN ALONG THE COASTAL SECTIONS AND
UPSLOPE MOUNTAIN RANGES BUT CAN NOT RULE OUT A STRAY SHOWER OVER
INLAND AREAS GIVEN THE WEAK PRESSURE PATTERN AND ABUNDANCE OF
CYCLONIC CIRCULATION ALOFT.

THE MOSTLY CLOUDY AND SHOWERY REGIME CONTINUES THROUGH MID WEEK WHILE
THE UPPER PATTERN MAKES VERY LITTLE PROGRESS...MAINTAINING THE LONG
WAVE AXIS NEAR THE ALASKA PENINSULA.

SOUTHWEST ALASKA...
LIKEWISE WILL SEE GENERALLY INCREASING CLOUDS WITH SCATTERED SHOWERS
THROUGH EARLY NEXT WEEK. TEMPERATURES WILL REMAIN AT OR ABOVE
CLIMATOLOGICAL NORM FOR THIS TIME OF YEAR. THE WEAK PRESSURE GRADIENT
AND ABUNDANT LOW LEVEL MOISTURE COULD LEND ITSELF TO EXTENSIVE FOG
ALONG THE COAST AND IN LOW LYING AREAS.

ALEUTIANS/BERING SEA...
A STORM FORCE FRONT IS APPROACHING THE WESTERN ALEUTIANS BUT WILL
WEAKEN RAPIDLY AS IT ENCOUNTERS THE HIGH PRESSURE OVER THE CENTRAL
BERING SEA. A WEAK SURFACE OCCLUSION WILL DEVELOP ALONG THE WEAKENING
BOUNDARY AROUND THE CENTRAL ALEUTIANS TUESDAY...AND THEN CONTINUE TO
FILL AS IT BECOMES A VERTICALLY STACKED LOW NEAR THE ALASKA PENINSULA
BY MID WEEK.

.AER/ALU...WATCH/WARNING SUMMARY
PUBLIC...NONE.
MARINE...STORM WARNING 176
         GALE WARNING 172 175.
FIRE WEATHER...NONE.

AB MAR 10