Gale Warning 589, NWS Anchorage, AK

741 
FZAK62 PAFC 131153
OFFALU

OFFSHORE WATERS FORECAST
NATIONAL WEATHER SERVICE ANCHORAGE AK
400 AM AKDT TUE SEP 13 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.

PKZ499-140300-
400 AM AKDT TUE SEP 13 2011
.SYNOPSIS FOR CENTRAL BERING SEA...

A 987 MB LOW NEAR 54N 177E MOVES TO 58N 161W LATE THU MORNING AT 
989 MB. A WEATHER FRONT MOVES INTO THE WESTERN ALEUTIANS EARLY THU
MORNING.

$$

PKZ411-140300-
BERING SEA OFFSHORE WEST OF 180 AND EAST OF THE INTERNATIONAL
DATELINE
400 AM AKDT TUE SEP 13 2011

.TODAY...VARIABLE WIND 10 TO 20 KT. SEAS 5 TO 8 FT. 
.TONIGHT AND WED..NW WIND 15 TO 25 KT. SEAS 5 TO 9 FT. PATCHY FOG. 
.WED NIGHT...W WIND 25 KT. SEAS 9 FT. 
.THU...NW WIND 25 KT. SEAS 9 FT.
.FRI AND SAT...N WIND 15 KT. SEAS 5 FT. 

$$

PKZ412-140300-
BERING SEA OFFSHORE 171W TO 180 AND NORTH OF 56N
400 AM AKDT TUE SEP 13 2011

.TODAY...VARIABLE WIND 10 KT BECOMING SE 10 TO 20 KT IN THE
AFTERNOON. SEAS 5 TO 8 FT. PATCHY FOG. 
.TONIGHT...NE WIND 10 TO 20 KT. SEAS 4 TO 7 FT. PATCHY FOG. RAIN.
.WED...NW WIND 15 TO 25 KT. SEAS 5 TO 9 FT. RAIN SHOWERS. 
.WED NIGHT AND THU...NW WIND 20 KT. SEAS 7 FT. 
.FRI AND SAT...N WIND 15 KT. SEAS 7 FT. 

$$

PKZ413-140300-
BERING SEA OFFSHORE 171W TO 180 AND SOUTH OF 56N
400 AM AKDT TUE SEP 13 2011

...GALE WARNING TONIGHT...

.TODAY...S WIND 15 TO 25 KT. SEAS 5 TO 8 FT. RAIN SHOWERS. 
.TONIGHT...W WIND 25 TO 35 KT. SEAS 9 TO 14 FT. PATCHY FOG. RAIN.
.WED...W WIND 20 TO 30 KT. SEAS 7 TO 12 FT. PATCHY FOG. 
.WED NIGHT AND THU...W WIND 25 KT. SEAS 9 FT. 
.FRI...NW WIND 15 KT. SEAS 6 FT. 
.SAT...N WIND 15 KT. SEAS 7 FT.  

$$

PKZ414-140300-
BERING SEA OFFSHORE EAST OF 171W
400 AM AKDT TUE SEP 13 2011

.TODAY...W WIND 10 TO 20 KT. SEAS 4 TO 7 FT. PATCHY FOG. 
.TONIGHT...S WIND 15 TO 25 KT. SEAS 5 TO 9 FT. PATCHY FOG. RAIN.
.WED...S WIND 20 TO 30 KT. SEAS 8 TO 12 FT. RAIN.
.WED NIGHT...SW WIND 25 KT. SEAS 11 FT. 
.THU...W WIND 25 KT. SEAS 10 FT. 
.FRI...W WIND 20 KT. SEAS 8 FT. 
.SAT...VARIABLE WIND 10 KT. SEAS 4 FT.  

$$

590 
FZAK62 PAFC 132301
OFFALU

OFFSHORE WATERS FORECAST
NATIONAL WEATHER SERVICE ANCHORAGE AK
400 PM AKDT TUE SEP 13 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.

PKZ499-141500-
400 PM AKDT TUE SEP 13 2011
.SYNOPSIS FOR CENTRAL BERING SEA...

A 990 MB LOW OVER BRISTOL BAY WEAKENS AND MOVES INLAND TONIGHT.
A 991 MB LOW NEAR 60N 171W MOVES TO 58N 177W WED NIGHT. A 986 MB LOW
NEAR 55N 178E MOVES TO 58N 165W AT 990 MB LATE WED NIGHT. THIS LOW
THEN MOVES INLAND ALONG KUSKOKWIM BAY LATE THU MORNING.

$$

PKZ411-141500-
BERING SEA OFFSHORE WEST OF 180 AND EAST OF THE INTERNATIONAL
DATELINE
400 PM AKDT TUE SEP 13 2011

.TONIGHT...NW WIND 20 KT. SEAS 7 FT. PATCHY FOG. 
.WED...NW WIND 25 KT. SEAS 8 FT. PATCHY FOG. 
.WED NIGHT...W WIND 25 KT. SEAS 9 FT. PATCHY FOG. 
.THU...W WIND 25 KT. SEAS 9 FT. 
.THU NIGHT...NW WIND 15 KT. SEAS 7 FT. 
.FRI...N WIND 15 KT. SEAS 6 FT. 
.SAT...N WIND 15 KT. SEAS 6 FT. 
.SUN...SE WIND 20 KT. SEAS 9 FT.  

$$

PKZ412-141500-
BERING SEA OFFSHORE 171W TO 180 AND NORTH OF 56N
400 PM AKDT TUE SEP 13 2011

.TONIGHT...E WIND 20 KT. SEAS 6 FT. RAIN SHOWERS. 
.WED...NW WIND 25 KT. SEAS 7 FT. RAIN SHOWERS. 
.WED NIGHT...NW WIND 25 KT. SEAS 7 FT. PATCHY FOG. 
.THU...NW WIND 20 KT. SEAS 8 FT. 
.THU NIGHT...NW WIND 15 KT. SEAS 7 FT. 
.FRI AND SAT...N WIND 15 KT. SEAS 6 FT. 
.SUN...E WIND 20 KT. SEAS 6 FT.  

$$

PKZ413-141500-
BERING SEA OFFSHORE 171W TO 180 AND SOUTH OF 56N
400 PM AKDT TUE SEP 13 2011

...GALE WARNING THROUGH WEDNESDAY...

.TONIGHT...W WIND 25 TO 35 KT. SEAS 10 FT. RAIN.
.WED...NW WIND 35 KT. SEAS 12 FT. PATCHY FOG. RAIN SHOWERS. 
.WED NIGHT...W WIND 30 KT. SEAS 10 FT. PATCHY FOG. 
.THU AND THU NIGHT...W WIND 25 KT. SEAS 10 FT. 
.FRI...NW WIND 15 KT. SEAS 8 FT. 
.SAT...N WIND 15 KT. SEAS 8 FT. 
.SUN...SW WIND 15 KT. SEAS 7 FT.  

$$

PKZ414-141500-
BERING SEA OFFSHORE EAST OF 171W
400 PM AKDT TUE SEP 13 2011

.TONIGHT...S WIND 25 KT. SEAS 7 FT. PATCHY FOG. RAIN. 
.WED...SW WIND 20 TO 30 KT. SEAS 9 FT. RAIN. 
.WED NIGHT...W WIND 20 TO 30 KT. SEAS 10 FT. PATCHY FOG. 
RAIN SHOWERS. 
.THU...W WIND 30 KT. SEAS 10 FT. 
.THU NIGHT...W WIND 25 KT. SEAS 9 FT. 
.FRI...W WIND 20 KT. SEAS 9 FT. 
.SAT...VARIABLE WIND 10 KT. SEAS 5 FT. 
.SUN...N WIND 15 KT. SEAS 5 FT.  

$$

800 
FZAK62 PAFC 141106
OFFALU

OFFSHORE WATERS FORECAST
NATIONAL WEATHER SERVICE ANCHORAGE AK
400 AM AKDT WED SEP 14 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.

PKZ499-150300-
400 AM AKDT WED SEP 14 2011
.SYNOPSIS FOR CENTRAL BERING SEA...

A 985 MB LOW NEAR 55N 174W MOVES TO 59N 163W LATE THU MORNING AT 
990 MB AND THEN MOVES ONSHORE. A 991 MB LOW NEAR 60N 180 EARLY THU
MOVES TO 58N 177W AT 992 MB FRI AFTERNOON. A WEATHER FRONT MOVES
ACROSS THE CENTRAL BERING THU NIGHT.

$$

PKZ411-150300-
BERING SEA OFFSHORE WEST OF 180 AND EAST OF THE INTERNATIONAL
DATELINE
400 AM AKDT WED SEP 14 2011

.TODAY...W WIND 25 KT. SEAS 8 FT. PATCHY FOG. 
.TONIGHT AND THU...W WIND 25 KT. SEAS 9 FT. PATCHY FOG. 
.THU NIGHT...W WIND 20 KT. SEAS 8 FT. 
.FRI...NW WIND 20 KT. SEAS 7 FT. 
.SAT...NW WIND 15 KT. SEAS 6 FT.
.SUN...E WIND 15 KT. SEAS 5 FT.  

$$

PKZ412-150300-
BERING SEA OFFSHORE 171W TO 180 AND NORTH OF 56N
400 AM AKDT WED SEP 14 2011

.TODAY...NW TO NE WIND 15 TO 25 KT. SEAS 5 TO 8 FT. RAIN SHOWERS. 
.TONIGHT AND THU...W WIND 15 TO 25 KT. SEAS 6 TO 9 FT. PATCHY FOG. 
.THU NIGHT...SW WIND 15 KT. SEAS 6 FT. 
.FRI...VARIABLE WIND 10 KT. SEAS 5 FT. 
.SAT...VARIABLE WIND 10 KT. SEAS 4 FT. 
.SUN...NE WIND 15 KT. SEAS 6 FT.  

$$

PKZ413-150300-
BERING SEA OFFSHORE 171W TO 180 AND SOUTH OF 56N
400 AM AKDT WED SEP 14 2011

.TODAY...NW WIND 20 TO 30 KT. SEAS 17 TO 12 FT. PATCHY FOG. RAIN
SHOWERS. 
.TONIGHT...W WIND 30 KT. SEAS 13 FT. PATCHY FOG. 
.THU...W WIND 25 KT. SEAS 10 FT. PATCHY FOG. 
.THU NIGHT...SW WIND 20 KT. SEAS 9 FT. 
.FRI...W WIND 15 KT. SEAS 7 FT. 
.SAT...NW WIND 15 KT. SEAS 6 FT.
.SUN...W WIND 20 KT. SEAS 7 FT.  

$$

PKZ414-150300-
BERING SEA OFFSHORE EAST OF 171W
400 AM AKDT WED SEP 14 2011

.TODAY...E TO S WIND 15 TO 25 KT. SEAS 5 TO 9 FT. RAIN.
.TONIGHT...E OF 166W...VARIABLE WIND 10 TO 20 KT. SEAS 4 TO 7 FT.
PATCHY FOG. RAIN. W OF 166W...W WIND 20 TO 30 KT. SEAS 7 TO 11 FT.
PATCHY FOG. RAIN SHOWERS. 
.THU...W WIND 15 TO 25 KT. SEAS 5 TO 10 FT. PATCHY FOG. 
.THU NIGHT...W WIND 25 KT. SEAS 10 FT. 
.FRI...SW WIND 20 KT. SEAS 8 FT. 
.SAT...VARIABLE WIND 10 KT. SEAS 5 FT. 
.SUN...N WIND 20 KT. SEAS 7 FT.  

$$

SOUTHCENTRAL AND SOUTHWEST ALASKA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE ANCHORAGE AK
200 PM AKDT MON SEP 12 2011

.MODEL DISCUSSION...THE MODEL INITIALIZATIONS WERE REASONABLE.
SYNOPTIC FORECAST TRENDS ARE IN GENERAL AGREEMENT AND SOMEWHAT
REASONABLE. GENERALLY FORECAST PACKAGES WILL BE BASED IN PART ON A
NAM/ECMWF BLEND WITH THE FIRST 48 TO 60HRS...THEN A GFS/ECMWF BLEND
TO 84 HRS (THU AFTERNOON).

UPPER LEVELS...
A BROAD UPPER LEVEL TROUGH EXTENDS FROM EASTERN RUSSIA TO AN OLD
CUT-OFF CENTER OVER THE NORTH PACIFIC. THE LONG WAVE TO THE NORTH
BECOMES NEGATIVELY TILTED AS IT DIGS SE TO THE NE PACIFIC. THE
CUT-OFF CENTER WHICH HAS STARTED TO MOVE NORTH WEAKENS AS IT MOVES TO
THE NORTHERN GULF TONIGHT. A LOW CENTER FORMING OVER THE WESTERN
BERING MOVES TO THE EASTERN BERING WED AND ACTS AS THE FOCAL POINT
FOR WAVES ROTATING NORTH THROUGH THE GULF OF ALASKA.

.SHORT TERM FORECAST...

.SOUTHCENTRAL ALASKA...
A SERIES OF WAVES MOVE NORTH ACROSS THE GULF OF ALASKA OVER THE NEXT
COUPLE OF DAYS. THE STRONGER OF THE WAVES MOVES NORTH TONIGHT AND
BRINGS GALE FORCE WINDS TO MUCH OF THE GULF OVERNIGHT AND TUE. WINDS
IN GENERAL OVER THE GULF SHOULD START DIMINISHING TUE AFTERNOON.
HOWEVER...PRESSURE DRIVEN WINDS ACROSS THE KENAI PEN/ANCHORAGE
BOWL...WILL REMAIN RELATIVELY STRONG THROUGH TUE NIGHT AS THE HIGH
BUILDS ACROSS THE NORTH GULF. BRISK SOUTH WINDS ARE ALSO EXPECTED
ALONG THE COPPER RIVER BASIN TUE.  GAP FLOWS WILL DIMINISH WED AS
GRADIENTS RELAX. THE MAJORITY OF THE RAIN WILL BE CAUGHT BY THE
COASTS AS WAVES MOVE THROUGH THE GULF OVER THE NEXT COUPLE OF DAYS.

SOUTHWEST ALASKA...A FRONTAL TROUGH MOVING WEST ACROSS THE SW
MAINLAND THIS AFTERNOON WEAKENS. A SECONDARY TROUGH EXTENDING ACROSS
THE AK PEN MOVES TO ALONG THE SW AK COAST AS A LOWS MOVES TO NEAR
BRISTOL BAY AND NEAR NUNIVAK ISLAND TONIGHT. THE TROUGH MOVES THROUGH
SW ALASKA WED. EXPECT RAIN WITH THE FEATURE. STRONG WINDS ACROSS
BRISTOL BAY TODAY WILL DIMINISH TUE AS PRESSURE GRADIENTS WEAKEN. A
DEVELOPING CENTER MOVING EAST ACROSS THE BERING SEA BRINGS WINDY
CONDITIONS AND RAIN TO THE AK PEN WED AND SW ALASKA WED NIGHT.

BERING SEA AND ALEUTIANS...A LOW CENTER DEVELOPING OVER THE WEST
ALEUTIANS TONIGHT MOVES TO SOUTH OF THE PRIBILOFS WED MORNING WITH A
PRESSURE IN THE 980S. THIS CENTER THEN WEAKENS AS IT MOVES TO BRISTOL
BAY WED NIGHT. EXPECT WINDY CONDITIONS AND RAIN AS THE LOW MOVES
RAPIDLY EAST ACROSS THE BERING.

.LONG TERM FORECAST...
BY LATE WEEK THE UPPER LEVEL PATTERN WILL FEATURE A BROAD UPPER LEVEL
LOW PRESSURE CENTERED IN THE VICINITY OF THE PRIBILOF ISLANDS
ENCOMPASSING MUCH OF THE BERING SEA. THE ENHANCED WESTERLIES TO THE
SOUTH OF THE TROUGH WILL HARBOR DIFFICULT TO TIME DISTURBANCES MOVING
FROM THE ALEUTIANS INTO THE GULF OF ALASKA. DETAILS OF THE FORECAST
WILL BECOME CLEARER WITH TIME BUT THE ACTIVE WEATHER FOR SOUTHERN
ALASKA LOOKS TO CONTINUE.

.AER/ALU...WATCH/WARNING SUMMARY
PUBLIC...NONE.
MARINE...GALES 120 125 130 138 140 172 175 413.
FIRE WEATHER...NONE.

RMC SEP 11