Gale Warning 912, NWS Anchorage, AK

000 
FZAK62 PAFC 031300
OFFALU

OFFSHORE WATERS FORECAST
NATIONAL WEATHER SERVICE ANCHORAGE AK
400 AM AKST THU DEC 3 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.

PKZ499-040300-
400 AM AKST THU DEC 3 2009
.SYNOPSIS FOR CENTRAL BERING SEA...

A 965 MB LOW AT 46N 171W WILL MOVE TO 53N 177W FRI AFTERNOON THEN TO
55N 180 LATE FRI NIGHT AT 955 MB. 

$$

PKZ411-040300-
BERING SEA OFFSHORE WEST OF 180 AND EAST OF THE INTERNATIONAL
DATELINE
400 AM AKST THU DEC 3 2009

...STORM WARNING FRIDAY...

.TODAY...E WIND 20 TO 30 KT. SEAS 8 TO 11 FT. FREEZING SPRAY. 
.TONIGHT...NE WIND 30 KT INCREASING TO 40 KT AFTER MIDNIGHT. SEAS
BUILDING TO 14 FT. FREEZING SPRAY. 
.FRI...NE WIND 50 KT. SEAS 23 FT. SNOW SHOWERS. FREEZING SPRAY. 
.FRI NIGHT...N WIND 60 KT. SEAS 31 FT. 
.SAT...NW WIND 50 KT. SEAS 32 FT. 
.SUN...N WIND 30 KT. SEAS 21 FT. 
.MON...NE WIND 35 KT. SEAS 20 FT.  

$$

PKZ412-040300-
BERING SEA OFFSHORE 171W TO 180 AND NORTH OF 56N
400 AM AKST THU DEC 3 2009

...STORM WARNING TONIGHT AND FRIDAY...

.TODAY...NE WIND 20 KT. SEAS 8 FT. FREEZING SPRAY. 
.TONIGHT...NE WIND 40 KT INCREASING TO 50 KT AFTER MIDNIGHT. SEAS
10 FT BUILDING TO 15 FT AFTER MIDNIGHT. SNOW. FREEZING SPRAY. 
.FRI...NE WIND 50 KT. SEAS 22 FT. SNOW AND RAIN.  
.FRI NIGHT...E WIND 55 KT. SEAS 26 FT. 
.SAT...SE WIND 45 KT. SEAS 27 FT. 
.SUN...E WIND 35 KT. SEAS 17 FT. 
.MON...E WIND 40 KT. SEAS 22 FT.  

$$

PKZ413-040300-
BERING SEA OFFSHORE 171W TO 180 AND SOUTH OF 56N
400 AM AKST THU DEC 3 2009

...STORM WARNING TONIGHT AND FRIDAY...

.TODAY...NE WIND 10 TO 20 KT INCREASING TO 25 TO 35 KT IN THE
AFTERNOON. SEAS BUILDING TO 10 TO 13 FT. SNOW. FREEZING SPRAY. 
.TONIGHT...NE WIND 50 KT. SEAS 20 FT. SNOW AND RAIN. 
.FRI...E WIND 50 KT DIMINISHING TO 40 KT IN THE AFTERNOON. SEAS
23 FT. RAIN AND SNOW. 
.FRI NIGHT...E WIND 40 KT. SEAS 23 FT. 
.SAT...SE WIND 40 KT. SEAS 20 FT. 
.SUN...E WIND 35 KT. SEAS 19 FT. 
.MON...E WIND 40 KT. SEAS 20 FT.  

$$

PKZ414-040300-
BERING SEA OFFSHORE EAST OF 171W
400 AM AKST THU DEC 3 2009

...STORM WARNING FRIDAY...

.TODAY...N OF 57N...VARIABLE WIND 10 TO 20 KT. SEAS 4 TO 7 FT.
FREEZING SPRAY.  S OF 57N...VARIABLE WIND 10 KT INCREASING TO NE
25 TO 35 KT. SEAS BUILDING TO 7 TO 12 FT. FREEZING SPRAY. 
.TONIGHT...E WIND 35 TO 45 KT. SEAS 13 TO 16 FT. SNOW AND RAIN.
FREEZING SPRAY. 
.FRI...E WIND 50 KT. SEAS 20 FT. RAIN AND SNOW. 
.FRI NIGHT...SE WIND 50 KT. SEAS 22 FT. 
.SAT...SE WIND 40 KT. SEAS 21 FT. 
.SUN AND MON...E WIND 40 KT. SEAS 18 FT. 

$$

AREA FORECAST DISCUSSION
SOUTHCENTRAL AND SOUTHWEST ALASKA
1203 PM AKST WED DEC 2 2009

.MODEL DISCUSSION...GFS AND NAM IN REASONABLE AGREEMENT ON PRIMARY
WEATHER FEATURES.  CURRENT SURFACE LOW OVER BRISTOL BAY IS PROG BY
BOTH MODELS TO MOVE INTO NORTON SOUND TONIGHT ALTHOUGH THE GFS IS A
BIT STRONGER WITH THE SURFACE GRADIENT...THE GENERAL IMPLICATIONS ARE
SIMILAR.  WITH REGARD TO THE DEEP NORTH PACIFIC LOW MOVING ACROSS THE
CENTRAL ALEUTIANS BOTH MODELS ARE SIMILAR WITH THE GFS SOME 200 NM TO
THE WEST AND 5 TO 7 MB DEEPER.

.ANALYSIS AND UPPER LEVELS...CURRENTLY A BROAD TROUGH EXISTS ACROSS
THE SOUTHWEST AND SOUTHCENTRAL WITH COOL AIR WEST OF THE ALASKA
RANGE. WIDE SPREAD SHOWERS OVER MOST OF THE REGION WILL CONTINUE
THROUGH THURSDAY MORNING.

.SHORT TERM FORECAST...SNOW SHOWERS POSSIBLY MIXED WITH SOME RAIN
SHOWERS OVER SOUTHCENTRAL THROUGH THURSDAY MORNING.  SNOW SHOWERS IN
THE SOUTHWEST ZONES THROUGH MIDDAY THURSDAY WITH AIR TEMPS IN THE
TEENS. RIDGE BUILDS OVER THE GULF OF ALASKA ON THURSDAY. EXPECT
NORTHWEST FLOW OVER THE BERING TO CONTINUE THROUGH TONIGHT. MAJOR
NORTH PACIFIC LOW STARTING TO IMPACT CENTRAL ALEUTIANS TO AK PEN
THURSDAY AFTERNOON. PLENTY OF WIND AND RAIN CAN BE EXPECTED WITH THIS
SYSTEM.

.LONG TERM FORECAST...WITH RIDGE OVER THE GULF MAIN INTEREST WILL BE
IN THE BERING. EXPECT HEAVY RAIN FROM SAND POINT TO KODIAK ISLAND AND
VERY STRONG SOUTH TO EAST WINDS CONTINUING EAST OF 175W FRIDAY NIGHT
THROUGH SAT MORNING. STRONG NORTH WINDS FRIDAY ADAK WEST.

.AER/ALU...WATCH/WARNING SUMMARY
PUBLIC...NONE
MARINE...SEE PACKAGE FOR DETAILS
FIRE WEATHER...NONE

JMP DEC 09