Storm Warning 134, NWS Anchorage, AK

000 
FZAK62 PAFC 091156
OFFALU

OFFSHORE WATERS FORECAST
NATIONAL WEATHER SERVICE ANCHORAGE AK
400 AM AKDT WED SEP 9 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.

PKZ499-100200-
400 AM AKDT WED SEP 9 2009
.SYNOPSIS FOR CENTRAL BERING SEA...
A RIDGE OF HIGH PRESSURE WILL MOVE INTO THE CENTRAL BERING BY
THURSDAY MORNING.  ON THURSDAY AFTERNOON A 980 MB LOW WILL MOVE TO
50N 172E.  IT WILL MAINTAIN STRENGTH AND MOVE TO 57N 176E BY FRIDAY
MORNING.
$$

PKZ411-100200-
BERING SEA OFFSHORE WEST OF 180 AND EAST OF THE INTERNATIONAL
DATELINE
400 AM AKDT WED SEP 9 2009

...STORM WARNING THURSDAY...

.TODAY...W WIND 20 KT. SEAS 6 FT. PATCHY FOG. 
.TONIGHT...S WIND 15 KT BECOMING SE 25 KT AFTER MIDNIGHT. SEAS 6 
BUILDING TO 10 FT. PATCHY FOG. 
.THU...SE WIND 35 KT INCREASING TO 50 KT IN THE AFTERNOON. SEAS
13 FT BUILDING TO 18 FT. PATCHY FOG. RAIN.
.THU NIGHT...S WIND 40 KT. SEAS 22 FT. 
.FRI...SW WIND 35 KT. SEAS 18 FT. 
.SAT...NW WIND 30 KT. SEAS 14 FT. 
.SUN...SW WIND 30 KT. SEAS 13 FT.  

$$

PKZ412-100200-
BERING SEA OFFSHORE 171W TO 180 AND NORTH OF 56N
400 AM AKDT WED SEP 9 2009

.TODAY...NW WIND 30 KT...EXCEPT 20 KT WEST OF 175W. SEAS 6 TO 10 FT. 
.TONIGHT...N WIND 25 KT...EXCEPT VARIABLE 15 KT WEST OF 175W.  SEAS 9
FT. PATCHY FOG. 
.THU...WEST OF 175W...E WIND 25 KT. SEAS 9 FT. EAST OF 175W...
VARIABLE WIND 15 KT BECOMING SOUTHEAST 25 KT AFTER MIDNIGHT. SEAS 9
FT. PATCHY FOG. 
.THU NIGHT...SE WIND 35 KT. SEAS BUILDING TO 14 FT. 
.FRI...S WIND 25 KT. SEAS 11 FT. 
.SAT...NW WIND 30 KT. SEAS 13 FT. 
.SUN...N WIND 35 KT. SEAS 14 FT.  

$$

PKZ413-100200-
BERING SEA OFFSHORE 171W TO 180 AND SOUTH OF 56N
400 AM AKDT WED SEP 9 2009

...GALE WARNING THURSDAY...

.TODAY...NW WIND 30 KT. SEAS 11 FT. PATCHY FOG. 
.TONIGHT...NW WIND 25 KT...BECOMING VARIABLE 15 KT AFTER MIDNIGHT.
SEAS 9 FT. PATCHY FOG. 
.THU...E WIND 20 KT BECOMING SE 35 KT IN THE AFTERNOON. SEAS 9 FT
BUILDING TO 13 FT. PATCHY FOG. 
.THU NIGHT...S WIND 35 KT. SEAS 14 FT. 
.FRI...SW WIND 30 KT. SEAS 14 FT. 
.SAT...W WIND 30 KT. SEAS 15 FT. 
.SUN...NW WIND 40 KT. SEAS 15 FT.  

$$

PKZ414-100200-
BERING SEA OFFSHORE EAST OF 171W
400 AM AKDT WED SEP 9 2009

...STORM WARNING TODAY...

.TODAY...N WIND 50 KT...DIMINISHING TO 40 KT DURING THE AFTERNOON.
SEAS 14 TO 18 FT. RAIN SHOWERS. 
.TONIGHT...NW WIND 35 KT. SEAS 15 FT. 
.THU...N WIND 25 KT. SEAS 11 FT. 
.THU NIGHT...W WIND 20 KT. SEAS 7 FT. 
.FRI...SW WIND 25 KT. SEAS 7 FT. 
.SAT...SW WIND 30 KT. SEAS 11 FT. 
.SUN...N WIND 40 KT. SEAS 14 FT.  

$$

000 
FZAK62 PAFC 091228 CCA
OFFALU

OFFSHORE WATERS FORECAST...CORRECTED
NATIONAL WEATHER SERVICE ANCHORAGE AK
400 AM AKDT WED SEP 9 2009

CORRECTED TYPO ZONE 411

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.

PKZ499-100200-
400 AM AKDT WED SEP 9 2009
.SYNOPSIS FOR CENTRAL BERING SEA...
A RIDGE OF HIGH PRESSURE WILL MOVE INTO THE CENTRAL BERING BY
THURSDAY MORNING.  ON THURSDAY AFTERNOON A 980 MB LOW WILL MOVE TO
50N 172E.  IT WILL MAINTAIN STRENGTH AND MOVE TO 57N 176E BY FRIDAY
MORNING.
$$

PKZ411-100200-
BERING SEA OFFSHORE WEST OF 180 AND EAST OF THE INTERNATIONAL
DATELINE
400 AM AKDT WED SEP 9 2009

...STORM WARNING THURSDAY...

.TODAY...W WIND 20 KT. SEAS 6 FT. PATCHY FOG. 
.TONIGHT...S WIND 15 KT BECOMING SE 25 KT AFTER MIDNIGHT. SEAS 6 FT
BUILDING TO 10 FT. PATCHY FOG. 
.THU...SE WIND 35 KT INCREASING TO 50 KT IN THE AFTERNOON. SEAS
13 FT BUILDING TO 18 FT. PATCHY FOG. RAIN.
.THU NIGHT...S WIND 40 KT. SEAS 22 FT. 
.FRI...SW WIND 35 KT. SEAS 18 FT. 
.SAT...NW WIND 30 KT. SEAS 14 FT. 
.SUN...SW WIND 30 KT. SEAS 13 FT.  

$$

PKZ412-100200-
BERING SEA OFFSHORE 171W TO 180 AND NORTH OF 56N
400 AM AKDT WED SEP 9 2009

.TODAY...NW WIND 30 KT...EXCEPT 20 KT WEST OF 175W. SEAS 6 TO 10 FT. 
.TONIGHT...N WIND 25 KT...EXCEPT VARIABLE 15 KT WEST OF 175W.  SEAS 9
FT. PATCHY FOG. 
.THU...WEST OF 175W...E WIND 25 KT. SEAS 9 FT. EAST OF 175W...
VARIABLE WIND 15 KT BECOMING SOUTHEAST 25 KT AFTER MIDNIGHT. SEAS 9
FT. PATCHY FOG. 
.THU NIGHT...SE WIND 35 KT. SEAS BUILDING TO 14 FT. 
.FRI...S WIND 25 KT. SEAS 11 FT. 
.SAT...NW WIND 30 KT. SEAS 13 FT. 
.SUN...N WIND 35 KT. SEAS 14 FT.  

$$

PKZ413-100200-
BERING SEA OFFSHORE 171W TO 180 AND SOUTH OF 56N
400 AM AKDT WED SEP 9 2009

...GALE WARNING THURSDAY...

.TODAY...NW WIND 30 KT. SEAS 11 FT. PATCHY FOG. 
.TONIGHT...NW WIND 25 KT...BECOMING VARIABLE 15 KT AFTER MIDNIGHT.
SEAS 9 FT. PATCHY FOG. 
.THU...E WIND 20 KT BECOMING SE 35 KT IN THE AFTERNOON. SEAS 9 FT
BUILDING TO 13 FT. PATCHY FOG. 
.THU NIGHT...S WIND 35 KT. SEAS 14 FT. 
.FRI...SW WIND 30 KT. SEAS 14 FT. 
.SAT...W WIND 30 KT. SEAS 15 FT. 
.SUN...NW WIND 40 KT. SEAS 15 FT.  

$$

PKZ414-100200-
BERING SEA OFFSHORE EAST OF 171W
400 AM AKDT WED SEP 9 2009

...STORM WARNING TODAY...

.TODAY...N WIND 50 KT...DIMINISHING TO 40 KT DURING THE AFTERNOON.
SEAS 14 TO 18 FT. RAIN SHOWERS. 
.TONIGHT...NW WIND 35 KT. SEAS 15 FT. 
.THU...N WIND 25 KT. SEAS 11 FT. 
.THU NIGHT...W WIND 20 KT. SEAS 7 FT. 
.FRI...SW WIND 25 KT. SEAS 7 FT. 
.SAT...SW WIND 30 KT. SEAS 11 FT. 
.SUN...N WIND 40 KT. SEAS 14 FT.  

$$

000 
FZAK62 PAFC 092313
OFFALU

OFFSHORE WATERS FORECAST
NATIONAL WEATHER SERVICE ANCHORAGE AK
400 PM AKDT WED SEP 9 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.

PKZ499-101400-
400 PM AKDT WED SEP 9 2009
.SYNOPSIS FOR CENTRAL BERING SEA...

A 980 MB LOW NEAR 43N 163E MAINTAINS STRENGTH AS IT MOVES TO 52N 
174E THU AFTERNOON. THIS LOW THEN WEAKENS TO 987 MB AS IT MOVES TO
58N 179E FRI AFTERNOON. A 974 MB LOW NEAR 49N 151W MOVES TO 58N 145W
FRI AFTERNOON AT 988 MB.  

$$

PKZ411-101400-
BERING SEA OFFSHORE WEST OF 180 AND EAST OF THE INTERNATIONAL
DATELINE
400 PM AKDT WED SEP 9 2009

...GALE WARNING THURSDAY AND THURSDAY NIGHT...

.TONIGHT...SE WIND INCREASING TO 15 TO 25 KT AFTER MIDNIGHT. SEAS 6
FT. PATCHY FOG. 
.THU...SE WIND 35 TO 45 KT. SEAS 13 TO 17 FT. PATCHY FOG. RAIN.
.THU NIGHT...SE WIND 30 TO 40 KT BECOMING S 25 KT AFTER MIDNIGHT.
SEAS 18 FT SUBSIDING TO 15 FT. PATCHY FOG. RAIN.
.FRI...SW WIND 35 KT. SEAS 15 FT. 
.FRI NIGHT THROUGH SAT...NW WIND 30 KT. SEAS 14 FT. 
.SUN...S WIND 35 KT. SEAS 12 FT. 
.MON...E WIND 35 KT. SEAS 11 FT.  

$$

PKZ412-101400-
BERING SEA OFFSHORE 171W TO 180 AND NORTH OF 56N
400 PM AKDT WED SEP 9 2009

...GALE WARNING THURSDAY NIGHT...

.TONIGHT...NW WIND 15 TO 25 KT. SEAS 4 TO 9 FT. PATCHY FOG. 
.THU...VARIABLE WIND 10 TO 20 KT. SEAS 4 TO 8 FT. PATCHY FOG. 
.THU NIGHT...SE WIND INCREASING TO 25 TO 35 KT. SEAS 8 TO 12 FT.
PATCHY FOG.
.FRI...S WIND 25 KT. SEAS 11 FT. 
.FRI NIGHT...SW WIND 30 KT. SEAS 13 FT. 
.SAT...NW WIND 30 KT. SEAS 13 FT. 
.SUN...N WIND 35 KT. SEAS 13 FT. 
.MON...NE WIND 20 KT. SEAS 9 FT.  

$$

PKZ413-101400-
BERING SEA OFFSHORE 171W TO 180 AND SOUTH OF 56N
400 PM AKDT WED SEP 9 2009

...GALE WARNING THURSDAY AND THURSDAY NIGHT...

.TONIGHT...NW WIND 25 TO 35 KT DIMINISHING TO 15 TO 25 KT BY
MIDNIGHT. SEAS 8 TO 12 FT. PATCHY FOG. 
.THU...SE WIND INCREASING TO 25 TO 35 KT IN THE AFTERNOON. SEAS 9 TO
12 FT. PATCHY FOG. 
.THU NIGHT...S WIND 25 TO 35 KT. SEAS 12 FT. PATCHY FOG. RAIN.
.FRI AND FRI NIGHT...SW WIND 35 KT. SEAS 15 FT. 
.SAT...W WIND 35 KT. SEAS 15 FT. 
.SUN...NW WIND 35 KT. SEAS 15 FT. 
.MON...E WIND 30 KT. SEAS 10 FT.  

$$

PKZ414-101400-
BERING SEA OFFSHORE EAST OF 171W
400 PM AKDT WED SEP 9 2009

...GALE WARNING TONIGHT...

.TONIGHT...NW WIND 35 KT. SEAS 15 FT. 
.THU...N WIND 25 KT. SEAS 11 FT. 
.THU NIGHT...NW WIND 20 KT. SEAS 7 FT. PATCHY FOG. 
.FRI...SW WIND 20 KT. SEAS 6 FT. 
.FRI NIGHT...SW WIND 30 KT. SEAS 10 FT. 
.SAT...SW WIND 30 KT. SEAS 12 FT. 
.SUN...N WIND 30 KT. SEAS 12 FT. 
.MON...N WIND 15 KT. SEAS 9 FT.  

$$

AREA FORECAST DISCUSSION
SOUTHCENTRAL AND SOUTHWEST ALASKA
200 PM AKDT TUE SEP 8 2009

.ANALYSIS AND UPPER LEVELS...
ALOFT...THE UPPER LOW SOUTH OF THE AKPEN CONTINUES TO WEAKEN WHILE AN
ARCTIC UPPER LOW DIGS SOUTHWARD. THIS LOW WILL DEEPEN THE LONGWAVE
TROUGH OVER MAINLAND ALASKA AND BECOME ONE OF THE MAIN FEATURES OF
INTEREST AS WE HEAD THROUGH THE COMING WEEK.

AT THE SURFACE...A WEAKENING LOW IS IN THE CENTRAL GULF OF AK WITH AN
ASSOCIATED WEATHER FRONT WASHING OUT ALONG THE NORTHERN GULF COAST.
THE OLD PARENT LOW IS STATIONARY OVER THE AKPEN...AND WILL EVENTUALLY
BE ABSORBED INTO A DEVELOPING NORTH PACIFIC LOW LATE WEDNESDAY.
ELSEWHERE...HIGH PRESSURE IS IN PLACE OVER THE WESTERN ALEUTIANS.
BETWEEN THESE TWO SYSTEMS...STRONG NORTHERLY WINDS ARE OCCURRING
ACROSS THE EASTERN BERING SEA AND ALEUTIANS.

.MODEL DISCUSSION...
MODELS ARE IN GENERAL AGREEMENT ON THE OVERALL FEATURES THROUGH LATE
THURSDAY...ALTHOUGH DETAILS REMAIN CLOUDY WITH REGARDS TO INTENSITY
AND POSITIONING OF INDIVIDUAL SURFACE LOWS. EXPECT THE DIGGING UPPER
LOW TO MOVE INTO THE GULF...DEEPENING THE DEVELOPING NORTH PACIFIC
SURFACE LOW MOVING INTO THE GULF OF ALASKA ON THURSDAY. THIS LOW WILL
THEN FILL IN THE GULF THROUGH THE REMAINDER OF THE WEEK. THE NEXT
AREA OF CONCERN PERTAINS TO THE REMNANTS OF FORMER TROPICAL CYCLONE
DUJUAN AS IT MOVES INTO THE BERING SEA LATE WEEK. MODEL DISAGREEMENT
CONTINUES WITH THIS FEATURE...BUT ANOTHER ROUND OF RAIN AND GALE TO
STORM FORCE WINDS CAN BE EXPECTED FOR THE WESTERN ALEUTIANS BY THE
END OF THE WORKWEEK.

.SHORT TERM FORECAST...
.SOUTHCENTRAL...
THE WEAKENING WEATHER FRONT WILL CONTINUE TO SPREAD SHOWERS ACROSS
COASTAL AREAS THIS AFTERNOON INTO TONIGHT...WITH THE HEAVIEST RAIN
ALONG THE IMMEDIATE GULF COAST. THE AFOREMENTIONED LOW WILL MOVE
NORTHWEST TO NEAR KODIAK ISLAND BEFORE DISSIPATING...RESULTING IN A
TIGHTENING GRADIENT AND GUSTY WINDS FOR THE NORTHERN GULF COAST AND
COOK INLET REGION THIS EVENING AND TONIGHT. AMPLE MOISTURE AND
VARIOUS SHORTWAVES ROTATING AROUND THE DIGGING UPPER LOW WILL KEEP
PRECIPITATION ALONG THE COAST TOMORROW AS WELL. BY LATE WEDNESDAY THE
DEEPENING SURFACE LOW MOVING INTO THE GULF WILL BEGIN TO IMPACT THE
REGION. MAIN CONCERNS INCLUDE GALE TO STORM FORCE WINDS ALONG THE
COASTAL AND OFFSHORE WATERS WITH HEAVY PRECIPITATION AS WELL. INLAND
LOCATIONS WILL REMAIN RELATIVELY DRY...WITH TYPICAL DOWNSLOPED AREAS
EXPERIENCING MINIMAL PRECIPITATION. THURSDAY IS EXPECTED TO BRING THE
MOST IMPACT TO THE REGION...WITH KODIAK ISLAND TAKING THE BRUNT FOR
LAND AREAS. STRONG WINDS CAN BE EXPECTED THROUGH CHANNELED AND HIGH
TERRAIN FARTHER INLAND WITH THIS SYSTEM AS WELL.

.SOUTHWEST...
SHOWERS WILL CONTINUE ACROSS THE REGION THROUGH EARLY THURSDAY AS THE
DIGGING UPPER LOW AND VARIOUS WAVES ROTATE AROUND THE AREA. AS THE
LOW MOVING INTO THE GULF SLIPS EASTWARD...BRISK NORTHERLY FLOW WILL
BE DEVELOPING ON THURSDAY. THIS WILL LEAD TO A DRYING TREND ACROSS
THE AREA THROUGHOUT THE DAY THURSDAY...WITH GUSTY WINDS POSSIBLE
PARTICULARLY ALONG THE AKPEN.

.BERING SEA AND ALEUTIANS...
STRONG NORTHERLY FLOW CONTINUES ACROSS THE EASTERN BERING AND
ALEUTIANS AS THE LOW WEAKENS IN THE GULF. EXPECTING THE GRADIENT TO
STRENGTHEN ONCE AGAIN TOMORROW AS THE LARGE NORTH PACIFIC LOW MOVES
INTO THE GULF. SUBSEQUENTLY...COLD AIR WILL BE FILTERING INTO THE
REGION WITH SCATTERED SHOWERS THROUGH THURSDAY. PROGRESSIVE HIGH
PRESSURE CURRENTLY OVER THE WESTERN ALEUTIANS WILL SLIDE
SOUTHEASTWARD THROUGH THURSDAY...KEEPING LOW CLOUDS AND FOG OVER THE
AREA. EARLY THURSDAY FOCUS SHIFTS TOWARDS THE REMNANTS OF TROPICAL
CYCLONE DUJUAN. WHILE THE DETAILS ARE DIFFICULT TO RESOLVE AT THIS
POINT...EXPECT UNSETTLED WEATHER AND STRONG WINDS TO RETURN TO THE
WESTERN BERING BY LATE WEEK.

.LONG TERM FORECAST...
UPPER FLOW IS EXPECTED TO BECOME MORE ZONAL ACROSS THE REGION THIS
WEEKEND. THERE IS ALSO GENERAL AGREEMENT ON AN UPPER LOW DIGGING FROM
BRISTOL BAY INTO THE GULF OF ALASKA...WHICH MEANS CONTINUED UNSETTLED
WEATHER AND SLIGHTLY BELOW NORMAL TEMPERATURES ACROSS MAINLAND ALASKA
AS WE HEAD INTO NEXT WEEK.

.AER/ALU...WATCH/WARNING SUMMARY
PUBLIC...NONE
MARINE...GALE 120 130 132 150 155 165 170 171 172 176 179 180
         STORM 170
FIRE WEATHER...NONE

NRH SEP 09