Gale Warning 910, NWS Anchorage, AK

000 
FZAK62 PAFC 030015
OFFALU

OFFSHORE WATERS FORECAST FOR THE BERING SEA
NATIONAL WEATHER SERVICE ANCHORAGE AK
400 PM AST SUN DEC 2 2007

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.

PKZ499-031500-
.SYNOPSIS FOR CENTRAL BERING SEA...
A 991 MB LOW NEAR 56N 149W WILL MOVE TO NEAR 56N 155W AND STRENGTHEN
TO 975 MB MON EVENING THEN WILL DISSIPATE 58N 157W TUE AFTERNOON. A
984 MB WILL DEVELOP NEAR 56N 165W THEN MOVE NORTHWEST AND DISSIPATE
NEAR 60N 177W TUE AFTERNOON. A 1003 MB LOW NEAR JAPAN WILL DEEPEN TO
954 MB NEAR 53N 171E TUE AFTERNOON.
$$

PKZ411-031500-
BERING SEA OFFSHORE WEST OF 180 AND EAST OF THE INTERNATIONAL
DATELINE
400 PM AST SUN DEC 2 2007

...GALE WARNING MONDAY NIGHT...

.TONIGHT...SE WIND 25 KT. SEAS 10 FT. 
.MON...VARIABLE WIND 10 KT BECOMING W WIND 25 KT BY AFTERNOON. SEAS 8
FT. SNOW AND RAIN. 
.MON NIGHT...W WIND 20 KT BECOMING SE 35 TOWARD MORNING. SEAS 12 FT. 
.TUE...SE WIND 40 KT SEAS 18 FT. 
.TUE NIGHT...S WIND 40 KT BECOMING NW 45 KT AFTER MIDNIGHT. SEAS 20
FT. 
.WED...W WIND 40 KT. SEAS 23 FT. 
.THU...SW WIND 30 KT. SEAS 16 FT. 
.FRI...W WIND 20 KT. SEAS 10 FT.  

$$

PKZ412-031500-
BERING SEA OFFSHORE 171W TO 180 AND NORTH OF 56N
400 PM AST SUN DEC 2 2007

...GALE WARNING TONIGHT...

.TONIGHT...N WIND 35 KT. SEAS 12 FT. 
.MON...N WIND 30 KT. SEAS 13 FT. 
.MON NIGHT...NW WIND 30 KT. SEAS 12 FT. FREEZING SPRAY. 
.TUE...SW WIND 25 KT. SEAS 11 FT. 
.TUE NIGHT...S WIND 45 KT. SEAS 14 FT. 
.WED...SW WIND 45 KT. SEAS 26 FT. 
.THU...SW WIND 45 KT. SEAS 24 FT. 
.FRI...SE WIND 30 KT. SEAS 14 FT.  

$$

PKZ413-031500-
BERING SEA OFFSHORE 171W TO 180 AND SOUTH OF 56N
400 PM AST SUN DEC 2 2007

...GALE WARNING THROUGH MONDAY NIGHT...

.TONIGHT...NW WIND 35 KT. SEAS 13 FT. 
.MON...NW WIND 35 KT. SEAS 15 FT. 
.MON NIGHT...NW WIND 40 KT. SEAS 18 FT. 
.TUE...SW WIND 45 KT. SEAS 16 FT. 
.TUE NIGHT...S WIND 50 KT. SEAS 23 FT. 
.WED...SW WIND 40 KT. SEAS 23 FT. 
.THU...W WIND 35 KT. SEAS 20 FT. 
.FRI...SE WIND 30 KT. SEAS 11 FT.  

$$

PKZ414-031500-
BERING SEA OFFSHORE EAST OF 171W
400 PM AST SUN DEC 2 2007

...GALE WARNING TONIGHT...

.TONIGHT...N WIND 35 KT. SEAS 13 FT. 
.MON...N WIND 30 KT. SEAS 12 FT.
.MON NIGHT...NW WIND 25 KT. SEAS 10 FT. FREEZING SPRAY. 
.TUE...W WIND 25 KT. SEAS 10 FT. 
.TUE NIGHT...S WIND 40 KT. SEAS 15 FT. 
.WED...SW WIND 40 KT. SEAS 17 FT. 
.THU...SW WIND 35 KT. SEAS 15 FT. 
.FRI...E WIND 40 KT. SEAS 13 FT.  

$$

000 
FZAK62 PAFC 031252
OFFALU

OFFSHORE WATERS FORECAST FOR THE BERING SEA
NATIONAL WEATHER SERVICE ANCHORAGE AK
400 AM AST MON DEC 3 2007

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.

PKZ499-040300-
.SYNOPSIS FOR CENTRAL BERING SEA...
A 982 MB LOW NEAR 55N 162W INTENSIFIES TO 972 MB MON EVENING NEAR 55N
157W THEN MOVES INTO SHELIKOF STRAIT AND WEAKENS. A NORTH PACIFIC LOW
CROSSES ATTU TUE MORNING AND INTENSIFIES TO 952 MB TUE EVENING NEAR
55N 177E. THIS LOW THEN WEAKENS TO 955 MB TUE NIGHT NEAR 56N 180.
$$

PKZ411-040300-
BERING SEA OFFSHORE WEST OF 180 AND EAST OF THE INTERNATIONAL
DATELINE
400 AM AST MON DEC 3 2007

...GALE WARNING TUESDAY...

.TODAY...NW WIND 30 KT. SEAS 10 FT. SNOW SHOWERS. 
.TONIGHT...W WIND 30 KT. SEAS 11 FT. 
.TUE...E WIND 40 KT. SEAS 14 FT. RAIN AND SNOW. 
.TUE NIGHT...N WIND 50 KT. SEAS 20 FT. 
.WED...W WIND 40 KT. SEAS 20 FT. 
.THU...SW WIND 40 KT. SEAS 16 FT. 
.FRI...NW WIND 30 KT. SEAS 11 FT.  

$$

PKZ412-040300-
BERING SEA OFFSHORE 171W TO 180 AND NORTH OF 56N
400 AM AST MON DEC 3 2007

.TODAY...N WIND 30 KT. SEAS 13 FT. 
.TONIGHT...N WIND 30 KT. SEAS 12 FT. FREEZING SPRAY. 
.TUE...W WIND 15 KT BECOMING S 25 KT IN THE AFTERNOON. SEAS 12 FT.
SNOW. 
.TUE NIGHT...S WIND 45 KT. SEAS 19 FT. 
.WED...SW WIND 45 KT. SEAS 28 FT. 
.THU...SW WIND 45 KT. SEAS 24 FT. 
.FRI...SE WIND 30 KT. SEAS 15 FT.  

$$

PKZ413-040300-
BERING SEA OFFSHORE 171W TO 180 AND SOUTH OF 56N
400 AM AST MON DEC 3 2007

...GALE WARNING THROUGH TUESDAY...

.TODAY...NW WIND 35 KT. SEAS 16 FT. SNOW.
.TONIGHT...NW WIND 35 KT. GUSTS TO 50 KT. SEAS 16 FT.
.TUE...SW WIND 30 KT BECOMING S 40 KT IN THE AFTERNOON. SEAS 15 FT.
RAIN AND SNOW. 
.TUE NIGHT...SW WIND 55 KT. SEAS 27 FT. 
.WED...SW WIND 50 KT. SEAS 31 FT. 
.THU...SW WIND 35 KT. SEAS 21 FT. 
.FRI...E WIND 35 KT. SEAS 14 FT.  

$$

PKZ414-040300-
BERING SEA OFFSHORE EAST OF 171W
400 AM AST MON DEC 3 2007

.TODAY...N WIND 30 KT. SEAS 14 FT. FREEZING SPRAY. 
.TONIGHT...NW WIND 25 KT EXCEPT SE 30 KT EAST OF 167W. SEAS 12 FT.
SNOW. 
.TUE...SW WIND 25 KT. SEAS 11 FT. 
.TUE NIGHT...S WIND 45 KT. SEAS 14 FT. 
.WED...S WIND 40 KT. SEAS 20 FT. 
.THU...SW WIND 40 KT. SEAS 24 FT. 
.FRI...E WIND 50 KT. SEAS 17 FT.  

$$

AREA FORECAST DISCUSSION
SOUTHCENTRAL AND SOUTHWEST ALASKA
200 PM AST SAT DEC 1 2007

.MODEL DISCUSSION...12Z GFS RUN IS CLOSING IN ON THE ECMWF LATEST
RUN. THE MOST NOTABLE IS THE TIMING AND INTENSITY OF NEXT LOW
ENTERING THE BERING SEA MON NIGHT AND TUE. SO WILL LEAN TOWARD THE
NEW GFS OUT WEST TO ACCOUNT FOR DEEPER AND FASTER MOVEMENT.

.ANALYSIS AND UPPER LEVELS...
.EAST...BLOCKING UPPER HIGH OVER THE MAINLAND IS EVIDENT ON THE
AFTERNOON IR SAT PICTURE. MORNING SOUNDINGS FROM PAFA...PANC...AND
PAYA SHOW THAT THE 300 MB JET WAS A LITTLE OVER DONE ON EARLIER MODEL
PROJECTIONS. UPPER JET SHOULD INTENSIFY SOME AS FORECAST AND SHIFT
OVER THE CENTRAL AND WESTERN MAINLAND TONIGHT AND SUN AS UPPER HIGH
MOVES TO THE ARCTIC OCEAN AND LOW MOVES INTO THE EASTERN GULF.
GENERALLY COLD TEMPS WERE OBSERVED OVER THE EASTERN MAINLAND AND
WESTERN CANADA OVERNIGHT WITH CLEARING. NE FLOW AROUND UPPER HIGH
SPREADS COLD AIR ACROSS MAINLAND ALASKA STARTING TODAY AND CONTINUING
THROUGH MON. THE WARMER AIR SPREADS TO THE SOUTHERN MAINLAND TUE AND
WED AS THE FLOW SHIFTS TO THE SOUTH. PRESSURE/TEMPERATURE GRADIENTS
INCREASE ACROSS THE REGION TODAY AND CONTINUE FAIRLY STRONG INTO MON.
EXPECT COMBINATION OF STRONG TEMP/PRESSURE GRADIENTS COMBINED WITH
UPPER JET SUPPORT WILL PRODUCE HIGH WIND WARNING CONDITIONS FOR ZONES
131 AND 135 TONIGHT AND SUN AND 111 SUN. WIND WARNING CONDITIONS
SHOULD DIMINISH OVER THESE AREAS MON AS UPPER FLOW WEAKENS AND SHIFTS
EASTERLY. ELSEWHERE...LOCALIZED STRONG GAP AND ENHANCED DRAINAGE
WINDS LIKELY THROUGH MON NIGHT. LOCALIZED WIND CHILL CONDITIONS WILL
ALSO BE A CONCERN THROUGH MON.

.WEST...OLD FRONTAL BOUNDARY IS CONTINUING TO WEAKEN AND WILL SHIFT
WSW AND DISSIPATE WITH ONSET OF NE UPPER FLOW. DRY AND COLDER AIR
LIKELY OVER THE WESTERN MAINLAND WITH SOME LOCALLY GUSTY WINDS
THROUGH MON. EXPECT CLOUDS WITH A CHANCE OF SNOW TO SPREAD TO SW
ALASKA MON NIGHT/TUE AS A LOW PRESSURE TROUGH PUSHES INTO THE EASTERN
BERING SEA/BRISTOL BAY. DEVELOPING STORM OVER THE NORTH PACIFIC IS
FORECAST TO MOVE TO THE WESTERN ALEUTIANS TUE EVENING AND TO THE
EASTERN BERING SEA ON WED EVENING. THIS TRACK IS FASTER ON THE 12Z
RUN OF THE GFS AND IS IN GOOD AGREEMENT WITH THE ECMWF TREND.

.AER/ALU...WATCH/WARNING SUMMARY
PUBLIC...UPGRADE HIGH WIND WATCHES TO WARNINGS FOR ZONES 101 111 AND
         135.
MARINE...GALES 120 129 130 132 138 140 150 155 160 165 170 AND 172.
FIRE WEATHER...NONE.

RMC DEC 07