Gale Warning 450, NWS Anchorage, AK

000 
FZAK62 PAFC 312346
OFFALU

OFFSHORE WATERS FORECAST
NATIONAL WEATHER SERVICE ANCHORAGE AK
400 PM AKDT TUE JUL 31 2012

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.

PKZ499-011500-
400 PM AKDT TUE JUL 31 2012
.SYNOPSIS FOR CENTRAL BERING SEA...
A 988 MB LOW NEAR 57N 176W WEAKENS TO 995 MB AS IT MOVES ONSHORE NEAR
THE KUSKOKWIM DELTA WED EVENING. A 1010 MB LOW MOVES TO NEAR 49N 179W
THU AFTERNOON. 
$$

PKZ411-011500-
BERING SEA OFFSHORE WEST OF 180 AND EAST OF THE INTERNATIONAL
DATELINE
400 PM AKDT TUE JUL 31 2012

...GALE WARNING TONIGHT...

.TONIGHT...NW WIND 35 KT DIMINISHING TO 25 KT AFTER MIDNIGHT. SEAS 
14 FT. PATCHY FOG. 
.WED...W WIND 25 KT. SEAS 9 FT. 
.WED NIGHT...SW WIND 25 KT. SEAS 7 FT. 
.THU...SW WIND 20 KT. SEAS 7 FT. 
.THU NIGHT...SW WIND 15 KT. SEAS 5 FT. 
.FRI...VARIABLE WIND 10 KT. SEAS 4 FT. 
.SAT...W WIND 25 KT. SEAS 7 FT. 
.SUN...W WIND 20 KT. SEAS 7 FT.  

$$

PKZ412-011500-
BERING SEA OFFSHORE 171W TO 180 AND NORTH OF 56N
400 PM AKDT TUE JUL 31 2012

.TONIGHT...SW TO NW WIND 30 KT. SEAS 13 FT. PATCHY FOG. RAIN.
.WED...NW WIND 30 KT. SEAS 11 FT. PATCHY FOG. 
.WED NIGHT...W WIND 25 KT. SEAS 9 FT. 
.THU...SW WIND 20 KT. SEAS 7 FT. 
.THU NIGHT...SW WIND 15 KT. SEAS 6 FT. 
.FRI...SE WIND 15 KT. SEAS 5 FT. 
.SAT...SW WIND 30 KT. SEAS 10 FT. 
.SUN...W WIND 25 KT. SEAS 11 FT.  

$$

PKZ413-011500-
BERING SEA OFFSHORE 171W TO 180 AND SOUTH OF 56N
400 PM AKDT TUE JUL 31 2012

...GALE WARNING THROUGH WEDNESDAY...

.TONIGHT...W WIND 35 KT. SEAS 16 FT. AREAS OF FOG. 
.WED...W WIND 35 KT. SEAS 13 FT. 
.WED NIGHT...W WIND 25 KT. SEAS 10 FT. 
.THU...SW WIND 20 KT. SEAS 7 FT. 
.THU NIGHT...S WIND 15 KT. SEAS 5 FT. 
.FRI...E WIND 20 KT. SEAS 5 FT. 
.SAT AND SUN...SW WIND 25 KT. SEAS 8 FT.

$$

PKZ414-011500-
BERING SEA OFFSHORE EAST OF 171W
400 PM AKDT TUE JUL 31 2012

...GALE WARNING TONIGHT...

.TONIGHT...SW WIND 25 TO 35 KT. SEAS 12 FT. AREAS OF FOG. RAIN.
.WED...SW WIND 30 KT. SEAS 13 FT. AREAS OF FOG. 
.WED NIGHT...W WIND 25 KT. SEAS 10 FT. PATCHY FOG. 
.THU...W WIND 20 KT. SEAS 8 FT. 
.THU NIGHT...SW WIND 15 KT. SEAS 6 FT. 
.FRI...SE WIND 20 KT. SEAS 7 FT. 
.SAT...SW WIND 20 KT. SEAS 9 FT.
.SUN...SW WIND 25 KT. SEAS 9 FT.  

$$

JM

SOUTHCENTRAL AND SOUTHWEST ALASKA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE ANCHORAGE AK
440 PM AKDT MON JUL 30 2012

.ANALYSIS AND UPPER LEVELS...
MUCH OF MAINLAND ALASKA IS UNDER THE INFLUENCE OF A NEGATIVELY TILTED
LONG WAVE UPPER LEVEL TROUGH WHICH EXTENDS FROM THE CHUKCHI SEA INTO
THE WESTERN GULF OF ALASKA. AN ASSOCIATED SURFACE LOW IS LOCATED JUST
EAST OF KODIAK ISLAND. THESE FEATURES ARE SUPPORTING WIDESPREAD
SHOWERS ACROSS SOUTHCENTRAL AK. RAIN HAS ENDED FOR THE TIME BEING
ACROSS THE SOUTHWEST MAINLAND AS THE LOW MOVES OFF TO THE EAST AND
SURFACE AND UPPER LEVEL RIDGING BEGIN TO BUILD IN FROM THE EASTERN
BERING. A LARGE UPPER LEVEL LOW IS LOCATED JUST EAST OF THE KAMCHATKA
PENINSULA AND IS POISED TO DEEPEN AS IT MOVES INTO THE BERING SEA.

.MODEL DISCUSSION...
MODELS ARE IN RELATIVELY GOOD AGREEMENT THROUGH THE SHORT TERM
REGARDING EVOLUTION OF MAIN FEATURES...BRINGING THE LOW PRESSURE
SYSTEM ACROSS THE BERING TO NEAR NUNIVAK ISLAND BY WEDNESDAY
AFTERNOON. WENT WITH THE NAM FOR THE SHORT TERM.

.SHORT TERM FORECAST...
SOUTHCENTRAL ALASKA...
SHOWERS WILL TAPER OFF TONIGHT AS THE LOW PROGRESSES EASTWARD ACROSS
THE GULF. UPPER LEVEL RIDGING WILL BUILD IN AS THE LOW DEPARTS TO THE
EAST...YIELDING PARTLY SUNNY SKIES ON TUESDAY OVER MUCH OF
SOUTHCENTRAL AK. RAIN WILL RETURN LATE TUESDAY NIGHT AS FLOW BECOMES
SOUTHWESTERLY IN ADVANCE OF THE SYSTEM MOVING THROUGH THE BERING.

SOUTHWEST ALASKA...
A RIDGE BUILDING IN FROM THE EASTERN BERING HAS BROUGHT A TEMPORARY
END TO PRECIPITATION OVER THE SOUTHWEST MAINLAND IN THE WAKE OF THE
LOW MOVING INTO THE GULF. IN ADDITION TO THE RIDGING OVERHEAD...AMPLE
LOW LEVEL MOISTURE AND ONSHORE FLOW WILL BE CONDUCIVE TO FOG
DEVELOPMENT TONIGHT IN COASTAL AREAS. RAIN WILL ONCE AGAIN OVERSPREAD
THE REGION ON TUESDAY AS A FRONT ASSOCIATED WITH THE SYSTEM IN THE
BERING APPROACHES THE COAST.

BERING SEA/ALEUTIANS...
THE LARGE UPPER LOW EAST OF THE KAMCHATKA PENINSULA IS POISED TO MOVE
INTO THE BERING...WITH AN ASSOCIATED SURFACE FRONT MOVING THROUGH THE
ALEUTIANS TODAY AND TUESDAY. RAIN WILL SUBSEQUENTLY OVERSPREAD THE
EASTERN ALEUTIANS AND THE AKPEN TONIGHT INTO TUESDAY. STRONG DOWNWARD
VERTICAL MOTION ASSOCIATED WITH A LOW LEVEL JET ON THE SOUTH SIDE OF
THE LOW WILL PRODUCE GALE FORCE GUSTS ACROSS THE WESTERN AND CENTRAL
ALEUTIANS ON TUESDAY...PERSISTING THROUGH WEDNESDAY MORNING IN THE
CENTRAL PART OF THE CHAIN.

.LONG TERM FORECAST...
THE ACTIVE WEATHER PATTERN WILL CONTINUE AS A SERIES OF WAVES MOVE
ACROSS THE REGION...KEEPING A CHANCE OF RAIN OR SHOWERS IN THE
FORECAST FOR MUCH OF THE DOMAIN THROUGH THE END OF THE WEEK.

.AER/ALU...WATCH/WARNING SUMMARY
PUBLIC...NONE
MARINE...GALES 172 175 176 185
FIRE WEATHER...NONE

CB JUL 12