Gale Warning 598, NWS Anchorage, AK

985 
FZAK62 PAFC 222336
OFFALU

OFFSHORE WATERS FORECAST
NATIONAL WEATHER SERVICE ANCHORAGE AK
400 PM AKDT THU SEP 22 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.

PKZ499-231500-
400 PM AKDT THU SEP 22 2011
.SYNOPSIS FOR CENTRAL BERING SEA...

NORTHWEST FLOW WILL CONTINUE EAST OF 170W THROUGH SAT AFTERNOON. A
993 MB JUST SOUTH OF THE KAMCHATKA PENINSULA WILL MOVE TO NEAR ATTU
AT 996 MB FRI AFTERNOON AND TO 51N 167W NM AT 990 MB SAT AFTERNOON.


$$

PKZ411-231500-
BERING SEA OFFSHORE WEST OF 180 AND EAST OF THE INTERNATIONAL
DATELINE
400 PM AKDT THU SEP 22 2011

.TONIGHT...W WIND 20 KT. SEAS 8 FT. 
.FRI...E WIND 30 KT. SEAS 9 FT. 
.FRI NIGHT...NE WIND 30 KT. SEAS 10 FT. 
.SAT...NW WIND 25 KT. SEAS 11 FT. 
.SAT NIGHT...W WIND 25 KT. SEAS 10 FT. 
.SUN AND MON...W WIND 25 KT. SEAS 10 FT. 
.TUE...W WIND 20 KT. SEAS 9 FT.  

$$

PKZ412-231500-
BERING SEA OFFSHORE 171W TO 180 AND NORTH OF 56N
400 PM AKDT THU SEP 22 2011

.TONIGHT...NW WIND 30 KT. SEAS 11 FT. 
.FRI...NW WIND 25 KT. SEAS 10 FT. 
.FRI NIGHT...N WIND 15 KT. SEAS 7 FT. 
.SAT...NW WIND 25 KT. SEAS 9 FT. 
.SAT NIGHT...NW WIND 30 KT. SEAS 12 FT. 
.SUN...NW WIND 25 KT. SEAS 12 FT. 
.MON AND TUE...SW WIND 25 KT. SEAS 12 FT. 

$$

PKZ413-231500-
BERING SEA OFFSHORE 171W TO 180 AND SOUTH OF 56N
400 PM AKDT THU SEP 22 2011

.TONIGHT...NW WIND 25 KT. SEAS 10 FT. 
.FRI...W WIND 20 KT BECOMING SE IN THE AFTERNOON. SEAS 9 FT. 
.FRI NIGHT...E WIND 25 KT. SEAS 9 FT. RAIN.
.SAT...N WIND 30 KT. SEAS 11 FT. 
.SAT NIGHT...NW WIND 30 KT. SEAS 11 FT. 
.SUN...NW WIND 30 KT. SEAS 10 FT. 
.MON...W WIND 25 KT. SEAS 9 FT. 
.TUE...SW WIND 20 KT. SEAS 9 FT.  

$$

PKZ414-231500-
BERING SEA OFFSHORE EAST OF 171W
400 PM AKDT THU SEP 22 2011

.TONIGHT...NW WIND 30 KT. SEAS 13 FT. 
.FRI...NW WIND 30 KT. SEAS 13 FT. 
.FRI NIGHT...NW WIND 25 KT. SEAS 10 FT. 
.SAT...NW WIND 25 KT. SEAS 8 FT. 
.SAT NIGHT AND SUN...NW WIND 30 KT. SEAS 11 FT. 
.MON AND TUE...W WIND 20 KT. SEAS 9 FT. 

$$

SOUTHCENTRAL AND SOUTHWEST ALASKA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE ANCHORAGE AK
500 PM AKDT WED SEP 21 2011

.ANALYSIS AND UPPER LEVELS...
A BROAD UPPER LOW CURRENTLY CENTERED OVER SOUTHWEST ALASKA COVERS
MOST OF WESTERN AND SOUTHERN ALASKA AND THE BERING SEA. A LARGE
COMPLEX SURFACE LOW, WHICH COVERS WESTERN ALASKA AND THE BERING SEA,
REMAIN NEARLY STATIONARY. ANOTHER LOW OVER THE EASTERN GULF OF ALASKA
CONTINUES TO MOVE NORTH.

.MODEL DISCUSSION...
THE MODELS ARE IN VERY GOOD AGREEMENT FRIDAY OVER MAINLAND ALASKA AND
THE EASTERN BERING SEA. SOME UNCERTAINLY REMAINS OVER THE WESTERN
ALEUTIANS WITH THE APPROACH OF THE FORMER TYPHOON ROKE FRIDAY.

.SHORT TERM FORECAST...
THE UPPER LOW OVER SOUTHWEST ALASKA WILL DRIFT INTO THE WESTERN GULF
FRIDAY. AN UPPER HIGH OVER SIBERIA WILL MOVE INTO THE CHUKCHI SEA AND
BUILD A RIDGE ACROSS NORTHERN ALASKA FRIDAY. THE JET STORM ACROSS THE
NORTHERN PACIFIC AND SOUTHEAST ALASKA WILL REMAIN NEARLY STATIONARY
AND CONTINUE TO STEER THE STORMS INTO WESTERN CANADA.

THE LARGE SURFACE LOW CENTERED OVER SOUTHWEST ALASKA WILL TO SLOWLY
WEAKEN AS THE CENTER DRIFTS INTO SOUTHCENTRAL ALASKA FRIDAY. THE LOW
OVER THE EASTERN GULF WILL WEAKEN OVER THE SOUTHERN YUKON TERRITORY
AMD MERGE WITH THE WESTERN LOW TONIGHT. THIS STORM WILL BREAK UP THE
SOUTHEAST FLOW OVER THE GULF THROUGH TONIGHT AND BRIEFLY DIMINISH THE
RAIN ALONG OVER PRINCE WILLIAM SOUND. THE SOUTHEAST FLOW WILL REFORM
THURSDAY WITH WIDESPREAD RAIN COMING BACK TO THE CENTRAL GULF COAST.
SCATTERED SHOWERS WILL PERSIST OVER THE REST OF SOUTHCENTRAL ALASKA
THROUGH FRIDAY. AREAS OF RAIN OVER SOUTHWEST ALASKA WILL DIMINISH TO
SCATTERED SHOWERS AS THE UPPER LOW MOVES INTO THE GULF. NORTH TO
NORTHWEST WINDS WILL CONTINUE OVER THE EASTERN BERING SEA THROUGH
FRIDAY. RAIN AND GUSTY WINDS WILL MOVE INTO THE WESTERN ALEUTIANS
THURSDAY NIGHT NIGHT AND FRIDAY.

.LONG TERM FORECAST...
THE BROAD SURFACE LOW OVER THE SOUTHERN ALASKA WILL SLOWLY MOVE SOUTH
AND WILL BE ABSORBED BY A STRONGER LOW OVER THE NORTHEAST PACIFIC
SUNDAY. THE SOUTHEAST FLOW OVER THE GULF WILL BECOME EAST AND
NORTHEAST WHICH WILL SHIFT THE FLOW OF MOISTURE AWAY FROM SOUTHERN.
GRADUAL IMPROVEMENT IS EXPECTED THROUGH THE WEEKEND.

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

NM SEP 11