Gale Warning 843, NWS Anchorage, AK

000 
FZAK62 PAFC 040028
OFFALU

OFFSHORE WATERS FORECAST
NATIONAL WEATHER SERVICE ANCHORAGE AK
400 PM AKST TUE DEC 3 2013

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.

PKZ499-041500-
400 PM AKST TUE DEC 3 2013
.SYNOPSIS FOR CENTRAL BERING SEA...
A 995 MB LOW NEAR 53N 171W WILL STRENGTHEN TO 987 MB AS TO MOVES TO
58N 178E BY WED AFTERNOON. A 990 MB LOW AROUND 42N 166W WILL
MOVE TO 52N 168W BY MID DAY WED. THIS LOW THEN MOVES TO 55N 170W LATE
WED NIGHT AND WEAKENS TO 1004 MB AS IT MOVES TO 59N 172W THU
AFTERNOON.
$$

PKZ411-041500-
BERING SEA OFFSHORE WEST OF 180 AND EAST OF THE INTERNATIONAL
DATELINE
400 PM AKST TUE DEC 3 2013

.TONIGHT...NE WIND 15 TO 30 KT. SEAS 5 TO 10 FT. 
.WED...VARIABLE WIND TO 20 KT. SEAS 10 FT. PATCHY FOG. RAIN AND SNOW.
.WED NIGHT...SW WIND 15 TO 25 KT. SEAS 9 FT. 
.THU THROUGH FRI...SW WIND 30 KT. SEAS 14 FT. 
.SAT...SW WIND 20 KT. SEAS 10 FT.
.SUN...S WIND 25 KT. SEAS 14 FT.  

$$

PKZ412-041500-
BERING SEA OFFSHORE 171W TO 180 AND NORTH OF 56N
400 PM AKST TUE DEC 3 2013

...GALE WARNING TONIGHT...

.TONIGHT...NE WIND 20 TO 35 KT. SEAS 12 FT. PATCHY FOG. RAIN AND
SNOW. 
.WED...SE WIND 15 TO 30 KT. SEAS 12 FT. PATCHY FOG. RAIN.
.WED NIGHT...SW TO SE WIND 10 TO 20 KT. SEAS 9 FT. PATCHY FOG. RAIN
AND SNOW. 
.THU AND THU NIGHT...SW WIND 25 KT. SEAS 10 FT. 
.FRI...W WIND 25 KT. SEAS 12 FT. 
.SAT AND SUN...SW WIND 15 KT. SEAS 8 FT. 

$$

PKZ413-041500-
BERING SEA OFFSHORE 171W TO 180 AND SOUTH OF 56N
400 PM AKST TUE DEC 3 2013

.TONIGHT...NE TO SE WIND 15 TO 30 KT. SEAS 10 FT. PATCHY FOG. RAIN.
.WED...SW WIND 10 TO 20 KT. SEAS 9 FT. PATCHY FOG. RAIN AND SNOW. 
.WED NIGHT...W WIND 15 TO 25 KT. SEAS 8 FT. 
.THU AND THU NIGHT...W WIND 25 KT. SEAS 10 FT. 
.FRI...NW WIND 35 KT. SEAS 12 FT. 
.SAT AND SUN...W WIND 20 KT. SEAS 8 FT. 

$$

PKZ414-041500-
BERING SEA OFFSHORE EAST OF 171W
400 PM AKST TUE DEC 3 2013

...GALE WARNING TONIGHT...

.TONIGHT...E WIND 25 TO 35 KT. SEAS 13 FT. PATCHY FOG. 
.WED...SE WIND 20 TO 30 KT. SEAS 11 FT. PATCHY FOG. RAIN.
.WED NIGHT...SE WIND 15 TO 30 KT. SEAS 9 FT. PATCHY FOG.
.THU...S WIND 30 KT. SEAS 11 FT. 
.THU NIGHT...N WIND 30 KT. SEAS 7 FT. 
.FRI...NE WIND 35 KT. SEAS 11 FT. 
.SAT...N WIND 20 KT. SEAS 10 FT. 
.SUN...NW WIND 15 KT. SEAS 6 FT.  

$$

000 
FZAK62 PAFC 041141
OFFALU

OFFSHORE WATERS FORECAST
NATIONAL WEATHER SERVICE ANCHORAGE AK
400 AM AKST WED DEC 4 2013

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.

PKZ499-050300-
400 AM AKST WED DEC 4 2013
.SYNOPSIS FOR CENTRAL BERING SEA...

A 994 MB LOW NEAR 55N 176W WILL MOVE TO EASTERN RUSSIA AND INTENSIFY
TO 987 MB THU MORNING. A 994 MB LOW NEAR 48N 166W WILL MOVE TO 61N
171W AND WEAKEN TO 1004 MB THU AFTERNOON. A WEATHER FRONT WILL SPREAD
NORTH INTO THE EASTERN ALEUTIANS THU NIGHT.

$$

PKZ411-050300-
BERING SEA OFFSHORE WEST OF 180 AND EAST OF THE INTERNATIONAL
DATELINE
400 AM AKST WED DEC 4 2013

.TODAY...NW WIND 15 TO 25 KT. SEAS 7 TO 10 FT. PATCHY FOG. RAIN AND
SNOW. 
.TONIGHT...SW WIND 25 KT. SEAS 10 FT. 
.THU...SW WIND 20 TO 30 KT. SEAS 9 TO 14 FT. 
.THU NIGHT AND FRI...SW WIND 30 KT. SEAS 16 FT. 
.SAT...S WIND 20 KT. SEAS 9 FT. 
.SUN...SE WIND 30 KT. SEAS 14 FT.  

$$

PKZ412-050300-
BERING SEA OFFSHORE 171W TO 180 AND NORTH OF 56N
400 AM AKST WED DEC 4 2013

.TODAY...SE WIND 20 TO 30 KT. SEAS 9 TO 13 FT. PATCHY FOG. RAIN.
.TONIGHT...SW WIND 10 TO 20 KT. SEAS 6 TO 9 FT. PATCHY FOG. RAIN.
.THU...W WIND 20 KT. SEAS 8 FT. 
.THU NIGHT...SW WIND 20 KT. SEAS 10 FT. 
.FRI...W WIND 25 KT. SEAS 11 FT. 
.SAT...N WIND 25 KT. SEAS 11 FT. 
.SUN...E WIND 15 KT. SEAS 6 FT.  

$$

PKZ413-050300-
BERING SEA OFFSHORE 171W TO 180 AND SOUTH OF 56N
400 AM AKST WED DEC 4 2013

.TODAY...SW WIND 20 KT. SEAS 9 FT. PATCHY FOG. RAIN AND SNOW. 
.TONIGHT...W WIND 20 KT. SEAS 9 FT. RAIN AND SNOW. 
.THU...W WIND 15 TO 25 KT. SEAS 9 FT. 
.THU NIGHT...W WIND 25 KT. SEAS 10 FT. 
.FRI AND SAT...NW WIND 30 KT. SEAS 13 FT. 
.SUN...E WIND 20 KT. SEAS 8 FT.  

$$

PKZ414-050300-
BERING SEA OFFSHORE EAST OF 171W
400 AM AKST WED DEC 4 2013

.TODAY...SE WIND 20 TO 30 KT. SEAS 7 TO 11 FT. PATCHY FOG. RAIN.
.TONIGHT...SE WIND 15 TO 30 KT. SEAS 6 TO 11 FT. PATCHY FOG. 
.THU...S WIND 20 TO 30 KT. SEAS 6 TO 10 FT. PATCHY FOG. 
.THU NIGHT...NE WIND 30 KT. SEAS 9 FT. 
.FRI...NE WIND 40 KT. SEAS 15 FT. 
.SAT...NE WIND 30 KT. SEAS 12 FT. 
.SUN...NE WIND 15 KT. SEAS 6 FT.  

$$

SOUTHCENTRAL AND SOUTHWEST ALASKA FORECAST DISCUSSION...CORRECTED
NATIONAL WEATHER SERVICE ANCHORAGE AK
645 PM AKST MON DEC 2 2013

.ANALYSIS AND UPPER LEVELS...
THE OMEGA BLOCK CURRENTLY CENTERED OVER THE WESTERN INTERIOR
CONTINUES TO SLOWLY SLIDE TO THE EAST. TO THE WEST OF THIS RIDGE...A
WEAKENING LOW IN THE EXTREME WESTERN BERING IS ALLOWING MID TO HIGH
LEVEL CLOUD COVER TO SPILL OVER THE WEST COAST TO THE WESTERN
CONFINES OF THE RIDGE. THE NEXT ALEUTIAN LOW IS DEVELOPING SOUTH OF
ADAK...BUT IS ALREADY BRINGING THE NEXT ROUND OF RAIN AND GUSTY
SOUTHEASTERLY WINDS TO THE EASTERN ALEUTIANS AND AKPEN. THIS SYSTEM
WILL CONTINUE MOVING NORTH AND MOVE INTO THE CENTRAL BERING BY MID
WEEK.

.MODEL DISCUSSION...
THE MODELS ARE IN GOOD OVERALL SYNOPTIC AGREEMENT INTO TOMORROW WHEN
THEY BEGIN TO HAVE DISAGREEMENT WITH HOW QUICKLY TO DEVELOP THE
PACIFIC LOW AS IT MOVES INTO THE CENTRAL BERING. THE GFS/EC ARE IN
AGREEMENT THAT THIS LOW WILL FURTHER INTENSIFY JUST WEST OF THE
PRIBILOF ISLANDS...WHILE THE NAM IS MUCH WEAKER WITH THIS SYSTEM AND
WAS TREATED AS AN OUTLIER.
THE MODELS ARE NOT BREAKING DOWN THE UPPER LEVEL RIDGE AS FAST AS
PREVIOUS RUNS. THIS WILL KEEP PRECIPITATION CONFINED TO KODIAK ISLAND
AND WESTWARD FOR THE REMAINDER OF THE WEEK. SOUTH CENTRAL ALASKA
SHOULD REMAIN PRECIPITATION FREE.

.SHORT TERM FORECAST...
SOUTHCENTRAL...NOW THAT GAP WINDS ALONG THE GULF COAST HAVE
DISSIPATED...THE FORECAST FOCUS IN THE EARLY TERM SHIFTS TO THE FOG
POSSIBILITY ALONG COOK INLET. THE 00Z ANCHORAGE SOUNDING INDICATES
THAT THE INVERSION HAS STRENGTHENED SO MUCH THAT THERE IS NOW A LAYER
ABOVE FREEZING STARTING AROUND 1700 FT STRETCHING TO 7000 FT.
TEMPERATURES IN THE ANCHORAGE BOWL ARE NEAR ZERO.
AREAS OF FOG AND LOW CLOUDS ALONG COOK INLET SHOULD BE EXPECTED
OVERNIGHT AND INTO TOMORROW MORNING. AN INCREASE IN CLOUD COVER ON
WEDNESDAY WILL HELP BRING A SLIGHT WARM UP TO THE AREA AND END THE
FOG.

SOUTHWEST ALASKA/BERING SEA/ALEUTIAN CHAIN...A LOW IN THE NORTH
PACIFIC WILL MOVE NORTHWARD INTO THE CENTRAL BERING TUE NIGHT THROUGH
THU...WHILE HIGH PRESSURE BECOMES MORE ELONGATED OVER THE MAINLAND
AND EASTERN PACIFIC. PRECIPITATION WILL ACCOMPANY THE LOW...HOWEVER
INLAND AREAS OF THE SOUTHWEST MAINLAND MAY VERY WELL NOT SEE MUCH AT
ALL. A SECOND LOW WILL FOLLOW BEHIND ON WEDNESDAY...BRINGING ANOTHER
ROUND OF PRECIPITATION TO THE REGION.

.LONG TERM FORECAST...AS THE UPPER RIDGE MOVES OFF TO THE
EAST...TEMPERATURES WILL MODERATE ACROSS THE MAINLAND. MODELS DIVERGE
FOR THIS WEEKEND...HOWEVER IT LOOKS LIKE THERE WILL BE SOME CHANCES
FOR PRECIPITATION ESPECIALLY WEST OF THE COOK INLET REGION FOR THE
WEEKEND INTO EARLY NEXT WEEK.

.AER/ALU...WATCH/WARNING SUMMARY
PUBLIC...FREEZING RAIN ADVISORY 152 155 161.
MARINE...GALE 150 155 180 195.
FIRE WEATHER...NONE

DEC 13