Storm Warning 126, NWS Anchorage, AK

000 
FZAK62 PAFC 252359
OFFALU

OFFSHORE WATERS FORECAST
NATIONAL WEATHER SERVICE ANCHORAGE AK
400 PM AKDT TUE AUG 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.

PKZ499-261400-
400 PM AKDT TUE AUG 25 2009
.SYNOPSIS FOR CENTRAL BERING SEA...
A 994 MB LOW NEAR 51N 168E WILL STRENGTHEN TO 982 MB NEAR 55N 174W
WED AFTERNOON. THIS LOW WILL THEN STRENGTHEN TO 978 MB NEAR 50N 162W
THU AFTERNOON. HIGH PRESSURE WILL BUILD OVER THE WESTERN BERING THU.
$$

PKZ411-261400-
BERING SEA OFFSHORE WEST OF 180 AND EAST OF THE INTERNATIONAL
DATELINE
400 PM AKDT TUE AUG 25 2009

...GALE WARNING THROUGH WEDNESDAY NIGHT...

.TONIGHT...SE WIND 25 KT INCREASING TO 40 KT THIS EVENING. 
SEAS 13 FT. RAIN AND FOG. 
.WED...N WIND 45 KT DIMINISHING TO 35 KT IN THE AFTERNOON. SEAS 16
FT. RAIN SHOWERS IN THE MORNING.
.WED NIGHT...N WIND 35 KT DIMINISHING TO NW 25 KT AFTER MIDNIGHT.
SEAS 14 FT.  
.THU...W WIND 15 KT. SEAS 12 FT. 
.THU NIGHT AND FRI...SW WIND 20 KT. SEAS 10 FT. 
.SAT...SW WIND 20 KT. SEAS 7 FT.
.SUN...SW WIND 30 KT. SEAS 10 FT.  

$$

PKZ412-261400-
BERING SEA OFFSHORE 171W TO 180 AND NORTH OF 56N
400 PM AKDT TUE AUG 25 2009

...STORM WARNING WEDNESDAY NIGHT...

.TONIGHT...SE WIND 20 KT INCREASING TO 40 KT AFTER MIDNIGHT. SEAS
11 FT. AREAS OF FOG. 
.WED...E WIND 45 KT. SEAS 17 FT. RAIN AND FOG.
.WED NIGHT...NE WIND 50 KT DIMINISHING TO N 40 KT AFTER MIDNIGHT.
SEAS 19 FT. RAIN AND FOG.
.THU...NW WIND 30 KT. SEAS 14 FT. 
.THU NIGHT...NW WIND 20 KT. SEAS 11 FT. 
.FRI...W WIND 20 KT. SEAS 8 FT. 
.SAT...SW WIND 20 KT. SEAS 6 FT.
.SUN...S WIND 30 KT. SEAS 10 FT.  

$$

PKZ413-261400-
BERING SEA OFFSHORE 171W TO 180 AND SOUTH OF 56N
400 PM AKDT TUE AUG 25 2009

...STORM WARNING WEDNESDAY AND WEDNESDAY NIGHT...

.TONIGHT...SE WIND 25 KT INCREASING TO 45 KT THIS EVENING. SEAS 13
FT. RAIN. 
.WED...S WIND 45 KT BECOMING W 50 KT IN THE AFTERNOON. SEAS 19 FT.
RAIN.
.WED NIGHT...N WIND 60 KT. SEAS 22 FT. RAIN.
.THU...N WIND 40 KT. SEAS 20 FT. 
.THU NIGHT...NW WIND 25 KT. SEAS 15 FT. 
.FRI...W WIND 20 KT. SEAS 10 FT. 
.SAT...SW WIND 15 KT. SEAS 6 FT.
.SUN...SW WIND 30 KT. SEAS 9 FT.  

$$

PKZ414-261400-
BERING SEA OFFSHORE EAST OF 171W
400 PM AKDT TUE AUG 25 2009

...GALE WARNING WEDNESDAY AND WEDNESDAY NIGHT...

.TONIGHT...N WIND 15 KT BECOMING E 20 KT AFTER MIDNIGHT. SEAS 7 FT.
AREAS OF FOG. 
.WED...SE WIND 45 KT. SEAS 13 FT. RAIN.
.WED NIGHT...E WIND 45 KT. SEAS 18 FT. RAIN.
.THU...N WIND 45 KT. SEAS 17 FT. 
.THU NIGHT...N WIND 35 KT. SEAS 13 FT. 
.FRI...NW WIND 30 KT. SEAS 12 FT. 
.SAT...W WIND 25 KT. SEAS 10 FT. 
.SUN...SW WIND 30 KT. SEAS 8 FT.  

$$

000 
FZAK62 PAFC 261154
OFFALU

OFFSHORE WATERS FORECAST
NATIONAL WEATHER SERVICE ANCHORAGE AK
400 AM AKDT WED AUG 26 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.

PKZ499-270200-
400 AM AKDT WED AUG 26 2009
.SYNOPSIS FOR CENTRAL BERING SEA...

A 984 MB LOW AT 53N 176W MOVES TO 50N 161W THURSDAY AFTERNOON AT 977
MB. A RIDGE OF HIGH PRESSURE FORMS OVER THE WESTERN ALEUTIANS
WEDNESDAY EVENING AND PERSISTS THROUGH FRIDAY.

$$

PKZ411-270200-
BERING SEA OFFSHORE WEST OF 180 AND EAST OF THE INTERNATIONAL
DATELINE
400 AM AKDT WED AUG 26 2009

...GALE WARNING THROUGH TONIGHT...

.TODAY...N WIND 40 KT. GUSTS TO 55 KT. SEAS 15 FT. RAIN.
.TONIGHT...N WIND 35 KT BECOMING NW 25 KT AFTER MIDNIGHT. SEAS
13 FT. 
.THU...W WIND 15 KT. SEAS 10 FT. PATCHY FOG. 
.THU NIGHT THROUGH FRI...SW WIND 20 KT. SEAS 7 FT. 
.SAT...SW WIND 25 KT. SEAS 8 FT.
.SUN...SW WIND 25 KT. SEAS 10 FT.  

$$

PKZ412-270200-
BERING SEA OFFSHORE 171W TO 180 AND NORTH OF 56N
400 AM AKDT WED AUG 26 2009

...STORM WARNING TONIGHT...

.TODAY...E WIND INCREASING TO 45 KT. SEAS 15 FT. PATCHY FOG. RAIN.
.TONIGHT...NE WIND 50 KT BECOMING N 40 KT AFTER MIDNIGHT. SEAS
17 FT. PATCHY FOG. RAIN.
.THU...N WIND 30 KT. SEAS 12 FT. 
.THU NIGHT...NW WIND 20 KT. SEAS 8 FT. 
.FRI...W WIND 15 KT. SEAS 7 FT. 
.SAT...SW WIND 20 KT. SEAS 6 FT.
.SUN...SW WIND 30 KT. SEAS 10 FT.  

$$

PKZ413-270200-
BERING SEA OFFSHORE 171W TO 180 AND SOUTH OF 56N
400 AM AKDT WED AUG 26 2009

...STORM WARNING TODAY AND TONIGHT...

.TODAY...SE TO SW WIND 30 TO 40 KT BECOMING W 50 KT IN THE 
AFTERNOON. GUSTS TO 65 KT IN THE AFTERNOON. SEAS 17 FT. PATCHY FOG.
RAIN.
.TONIGHT...N WIND 60 KT. SEAS 20 FT. RAIN.
.THU...N WIND 40 KT DIMINISHING TO 30 KT IN THE AFTERNOON. SEAS
17 FT. 
.THU NIGHT...NW WIND 25 KT. SEAS 13 FT. 
.FRI...W WIND 20 KT. SEAS 8 FT. 
.SAT...SW WIND 20 KT. SEAS 5 FT.
.SUN...SW WIND 30 KT. SEAS 9 FT.  

$$

PKZ414-270200-
BERING SEA OFFSHORE EAST OF 171W
400 AM AKDT WED AUG 26 2009

...GALE WARNING THROUGH THURSDAY...

.TODAY...E WIND INCREASING TO 30 TO 40 KT. SEAS 12 FT. PATCHY FOG.
RAIN.
.TONIGHT...E WIND 45 KT. SEAS 17 FT. PATCHY FOG. RAIN.
.THU...NE WIND 45 KT BECOMING N 35 KT IN THE AFTERNOON. SEAS 15 FT.
PATCHY FOG. RAIN.
.THU NIGHT...N WIND 30 KT. SEAS 13 FT. 
.FRI...NW WIND 35 KT. SEAS 11 FT. 
.SAT...NW WIND 25 KT. SEAS 7 FT.
.SUN...SW WIND 30 KT. SEAS 8 FT.  

$$

000 
FZAK62 PAFC 262353
OFFALU

OFFSHORE WATERS FORECAST
NATIONAL WEATHER SERVICE ANCHORAGE AK
400 PM AKDT WED AUG 26 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.

PKZ499-271400-
400 PM AKDT WED AUG 26 2009
.SYNOPSIS FOR CENTRAL BERING SEA...
A 983 MB LOW AT 54N 173W WILL MOVE TO NEAR 51N 163W AT 980 MB THU
AFTERNOON. THIS LOW WILL THEN WEAKEN OVER THE NORTH PACIFIC. HIGH
PRESSURE RIDGING WILL BUILD OVER THE WESTERN BERING SEA THU THROUGH
FRI.
$$

PKZ411-271400-
BERING SEA OFFSHORE WEST OF 180 AND EAST OF THE INTERNATIONAL
DATELINE
400 PM AKDT WED AUG 26 2009

...GALE WARNING TONIGHT...

.TONIGHT...N WIND 40 KT DIMINISHING TO 30 KT THIS EVENING. 
SEAS 14 FT. 
.THU...NW WIND 20 KT. SEAS 12 FT.  
.THU NIGHT...W WIND 20 KT. SEAS 10 FT.  
.FRI THROUGH SAT...SW WIND 20 KT. SEAS 8 FT. 
.SUN AND MON...SW WIND 25 KT. SEAS 13 FT. 

$$

PKZ412-271400-
BERING SEA OFFSHORE 171W TO 180 AND NORTH OF 56N
400 PM AKDT WED AUG 26 2009

...STORM WARNING TONIGHT...

.TONIGHT...NE WIND 50 KT DIMINISHING TO N 40 KT AFTER MIDNIGHT. SEAS
18 FT. RAIN.
.THU...N WIND 35 KT. SEAS 14 FT. 
.THU NIGHT...NW WIND 25 KT. SEAS 10 FT. 
.FRI AND FRI NIGHT...W WIND 20 KT. SEAS 8 FT. 
.SAT...SW WIND 25 KT. SEAS 8 FT. 
.SUN AND MON...SW WIND 30 KT. SEAS 12 FT. 

$$

PKZ413-271400-
BERING SEA OFFSHORE 171W TO 180 AND SOUTH OF 56N
400 PM AKDT WED AUG 26 2009

...STORM WARNING TONIGHT...

.TONIGHT...NW WIND 55 KT DIMINISHING TO N 45 KT AFTER MIDNIGHT. 
SEAS 21 FT. RAIN.
.THU...N WIND 45 KT DIMINISHING TO 35 KT IN THE AFTERNOON. SEAS
19 FT. 
.THU NIGHT...NW WIND 30 KT. SEAS 15 FT. 
.FRI AND FRI NIGHT...W WIND 20 KT. SEAS 9 FT. 
.SAT...SW WIND 20 KT. SEAS 6 FT. 
.SUN AND MON...SW WIND 30 KT. SEAS 11 FT. 

$$

PKZ414-271400-
BERING SEA OFFSHORE EAST OF 171W
400 PM AKDT WED AUG 26 2009

...STORM WARNING TONIGHT...

.TONIGHT...NE WIND 35 KT INCREASING TO 50 KT THIS EVENING. 
SEAS 18 FT. RAIN.
.THU...NE WIND 45 KT. SEAS 17 FT. RAIN.
.THU NIGHT...N WIND 35 KT. SEAS 15 FT. 
.FRI AND FRI NIGHT...NW WIND 30 KT. SEAS 13 FT. 
.SAT...NW WIND 25 KT. SEAS 8 FT. 
.SUN AND MON...SW WIND 30 KT. SEAS 10 FT. 

$$

000 
FZAK62 PAFC 271203
OFFALU

OFFSHORE WATERS FORECAST
NATIONAL WEATHER SERVICE ANCHORAGE AK
400 AM AKDT THU AUG 27 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.

PKZ499-280200-
400 AM AKDT THU AUG 27 2009
.SYNOPSIS FOR CENTRAL BERING SEA...

A 979 MB LOW AT 53N 168W MOVES TO 50N 160W FRIDAY MORNING AT 984 MB.
HIGH PRESSURE FORMING OVER THE WESTERN BERING SEA WILL SPREAD OVER
THE ENTIRE REGION BY FRIDAY NIGHT.

$$

PKZ411-280200-
BERING SEA OFFSHORE WEST OF 180 AND EAST OF THE INTERNATIONAL
DATELINE
400 AM AKDT THU AUG 27 2009

.TODAY...W WIND 20 KT. SEAS 10 FT. PATCHY FOG. 
.TONIGHT...SW WIND 20 KT. SEAS 9 FT. PATCHY FOG. 
.FRI...SW WIND 20 KT. SEAS 8 FT. PATCHY FOG. 
.FRI NIGHT...SW WIND 20 KT. SEAS 7 FT. 
.SAT...SW WIND 25 KT. SEAS 7 FT. 
.SUN...SW WIND 30 KT. SEAS 14 FT. 
.MON...SW WIND 25 KT. SEAS 13 FT.  

$$

PKZ412-280200-
BERING SEA OFFSHORE 171W TO 180 AND NORTH OF 56N
400 AM AKDT THU AUG 27 2009

...GALE WARNING TODAY...

.TODAY...N WIND 25 TO 35 KT. SEAS 12 FT. 
.TONIGHT...NW WIND 15 TO 25 KT. SEAS 9 FT. 
.FRI...W WIND 20 KT. SEAS 7 FT. PATCHY FOG. 
.FRI NIGHT THROUGH SAT...W WIND 20 KT. SEAS 6 FT. 
.SUN...SW WIND 35 KT. SEAS 12 FT. 
.MON...SW WIND 25 KT. SEAS 14 FT.  

$$

PKZ413-280200-
BERING SEA OFFSHORE 171W TO 180 AND SOUTH OF 56N
400 AM AKDT THU AUG 27 2009

...STORM WARNING TODAY...

.TODAY...N WIND 40 TO 50 KT DIMINISHING TO 25 TO 35 KT IN THE
AFTERNOON. SEAS 14 TO 17 FT. 
.TONIGHT...NW WIND 20 TO 30 KT. SEAS 14 FT. 
.FRI...NW WIND 20 KT. SEAS 9 FT. PATCHY FOG. 
.FRI NIGHT THROUGH SAT...W WIND 15 KT. SEAS 5 FT. 
.SUN...SW WIND 30 KT. SEAS 9 FT. 
.MON...SW WIND 25 KT. SEAS 11 FT.  

$$

PKZ414-280200-
BERING SEA OFFSHORE EAST OF 171W
400 AM AKDT THU AUG 27 2009

...GALE WARNING THROUGH FRIDAY...

.TODAY...NE WIND 35 TO 45 KT. SEAS 15 FT. PATCHY FOG. RAIN.
.TONIGHT...N WIND 25 TO 35 KT. SEAS 14 FT. 
.FRI...N WIND 25 TO 35 KT. SEAS 12 FT. 
.FRI NIGHT...NW WIND 30 KT. SEAS 8 FT. 
.SAT...NW WIND 20 KT. SEAS 6 FT. 
.SUN...W WIND 25 KT. SEAS 7 FT. 
.MON...SW WIND 30 KT. SEAS 10 FT.  

$$

AREA FORECAST DISCUSSION
SOUTHCENTRAL AND SOUTHWEST ALASKA
500 PM AKDT MON AUG 24 2009

.ANALYSIS AND UPPER LEVELS...
.UPPER LEVEL...THE UPPER TROUGH REMAINS OVER WESTERN ALASKA AND HAS
EXTENDED SOUTHEASTWARD TO LINK UP WITH AN UPPER LOW OVER THE
SOUTHEASTERN GULF. A BROAD UPPER RIDGE HAS MOVES INTO THE WESTERN
BERING SEA AND CONTINUES TO DRIFT EAST.

.AT THE SURFACE...THE MODERATE LOW JUST SOUTH OF THE EASTERN GULF IS
VERTICALLY STACKED UNDER THE UPPER LOW AND IS SLOWLY MOVING NORTH. A
WEAK WEATHER FRONT MOVING THROUGH THE COPPER RIVER BASIN AND PRINCE
WILLIAM SOUND HAS PRODUCED RAIN OVER THESE AREAS. ANOTHER MODERATE
LOW NEAR DUTCH HARBOR WILL CONTINUE TO MOVE SOUTHEAST INTO THE NORTH
PACIFIC TONIGHT. A RIDGE OVER THE WESTERN BERING IS LINKED TO THE
UPPER RIDGE IN ABOUT THE SAME POSITION AND WILL CONTINUE TO MOVE
WEST.

.MODEL DISCUSSION...
THE MODELS ARE IN VERY GOOD AGREEMENT AND HAD COME TO A BETTER
CONSENSUS ON FORMER TYPHOON VAMCO, THOUGH GFS AND NAM STRENGTHENS THE
STORM MORE THAN THE EUROPEAN MODEL AS IT MOVES ACROSS THE BERING
TUESDAY NIGHT THROUGH WEDNESDAY NIGHT.

.SHORT TERM FORECAST...
.UPPER LEVELS...THE UPPER TROUGH WILL REMAIN OVER WESTERN ALASKA
THROUGH WEDNESDAY. AN UPPER SHORT WAVE ALONG THE WEST SIDE OF THE
TROUGH WILL MOVE THROUGH SOUTHWEST ALASKA THROUGH TUESDAY AND INTO
THE SUSITNA VALLEY AND COOK INLET WEDNESDAY. THE UPPER LOW MOVING UP
THE EASTERN GULF TONIGHT WILL DISSIPATE OVER NORTHEASTERN GULF
TUESDAY EVENING. THE UPPER RIDGE OVER THE WESTERN BERING WILL MOVE
EAST INTO SOUTHWEST ALASKA WEDNESDAY.

.SOUTH CENTRAL ALASKA AND THE GULF...THE WEAKENING FRONT OVER THE
COPPER RIVER BASIN WILL DISSIPATE TONIGHT. RAIN OVER PRINCE WILLIAM
SOUND AND THE SOUTHEAST MAINLAND WILL BECOME SCATTERED SHOWER LATE
TONIGHT. ISOLATED SHOWERS WILL PERSIST OVER THE KENAI PENINSULA,
ANCHORAGE, MATANUSKA AND SUSITNA VALLEY THROUGH WEDNESDAY.

SOUTHWEST ALASKA...SCATTERED SHOWERS WILL PERSIST OVER THE AREA
THROUGH TUESDAY NIGHT THEN END FROM THE WEST AS THE RIDGE MOVES
INTO THE AREA. RAIN ALONG THE ALASKA PENINSULA WILL BECOME SHOWERS
TONIGHT AS THE LOW CENTERED NEAR DUTCH HARBOR MOVES INTO THE NORTH
PACIFIC TONIGHT.

BERING SEA...THE RIDGE MOVING THROUGH THE BERING SEA WILL KEEP AREAS
OF LOW CLOUDS AND FOG OVER MOST OF THE AREA THROUGH TUESDAY. THE
EXTRA-TROPICAL STORM OVER THE NORTHWEST PACIFIC WILL MOVE INTO THE
WESTERN ALEUTIANS TUESDAY EVENING AND STRENGTHEN AS IT MOVES INTO THE
CENTRAL BERING WEDNESDAY. CURRENT MODELS SHOW STORM FORCE WINDS ARE
POSSIBLE AROUND THIS STORM WEDNESDAY.

.LONG TERM FORECAST...
THE UPPER TROUGH OVER WESTERN ALASKA WILL BEGIN TO FILL AS THE UPPER
RIDGE MOVES INTO WESTERN AND CENTRAL MAINLAND WEDNESDAY NIGHT AND
THURSDAY. SKIES OVER WESTERN ALASKA SHOULD BEGIN TO IMPROVE THROUGH
THE LATTER HALF OF THE WEEK. A SURFACE TROUGH OVER THE GULF OF ALASKA
WILL MAINTAIN SOUTH TO SOUTHEAST FLOW ALONG THE CENTRAL GULF COAST
THROUGH THE REST OF THE WEEK. OCCASIONAL RAIN AND SCATTERED SHOWERS
WILL CONTINUE OVER SOUTH-CENTRAL ALASKA THROUGH THE REST OF THE WEEK.

.AER/ALU...WATCH/WARNING SUMMARY
PUBLIC...NONE.
MARINE...GALES 172 175 AND 176.
FIRE WEATHER...NONE.

NM AUG 09