Gale Warning 150, NWS Anchorage, AK

820 
FZAK61 PAFC 160014
OFFAER

OFFSHORE WATERS FORECAST
NATIONAL WEATHER SERVICE ANCHORAGE AK
400 PM AKST TUE FEB 15 2011

OFFSHORE WATERS FORECAST FOR THE GULF OF ALASKA WEST OF 144W

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.

PKZ399-161500-
400 PM AKST TUE FEB 15 2011
.SYNOPSIS FOR THE WESTERN GULF OF ALASKA...
A TROUGH OF LOW PRESSURE ALONG THE NORTH GULF COAST WILL PERSIST
THROUGH THU. 
$$

PKZ351-161500-
GULF OF ALASKA OFFSHORE NORTH OF 57N AND WEST OF 144W
400 PM AKST TUE FEB 15 2011

...GALE WARNING WEDNESDAY AND WEDNESDAY NIGHT...

.TONIGHT...NW WIND 15 KT. SEAS 7 FT. 
.WED AND WED NIGHT...NW WIND 15 KT. W OF 148W...NW WIND 25 TO 40 KT.
SEAS 10 FT. 
.THU...W WIND 15 TO 25 KT. SEAS 9 FT. 
.THU NIGHT...W WIND 30 KT. SEAS 12 FT. 
.FRI AND SAT...W WIND 35 KT. SEAS 14 FT. 
.SUN...NW WIND 25 KT. SEAS 12 FT.  

$$

PKZ352-161500-
GULF OF ALASKA OFFSHORE SOUTH OF 57N NORTH OF 55N AND WEST OF 144W
400 PM AKST TUE FEB 15 2011

...GALE WARNING WEDNESDAY AND WEDNESDAY NIGHT...

.TONIGHT...W WIND 15 KT...BECOMING NW 25 KT W OF 150W AFTER 
MIDNIGHT. SEAS 9 FT. RAIN AND SNOW. 
.WED...NW WIND 20 TO 30 KT INCREASING TO 30 TO 45 KT IN THE
AFTERNOON. SEAS 9 FT BUILDING TO 16 FT IN THE AFTERNOON. 
.WED NIGHT...NW WIND 30 TO 45 KT. SEAS 17 FT. 
.THU...W WIND 30 KT. SEAS 14 FT. 
.THU NIGHT THROUGH SAT...W WIND 35 KT. SEAS 14 FT. 
.SUN...NW WIND 25 KT. SEAS 12 FT.  

$$

969 
FZAK61 PAFC 161248
OFFAER

OFFSHORE WATERS FORECAST
NATIONAL WEATHER SERVICE ANCHORAGE AK
400 AM AKST WED FEB 16 2011

OFFSHORE WATERS FORECAST FOR THE GULF OF ALASKA WEST OF 144W

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.

PKZ399-170300-
400 AM AKST WED FEB 16 2011
.SYNOPSIS FOR THE WESTERN GULF OF ALASKA...
A TROUGH OF LOW PRESSURE ALONG THE NORTH GULF COAST WILL PERSIST
THROUGH THU AFTERNOON AND THEN WEAKEN. A 1009 MB LOW WILL DEVELOP
NEAR 59N 149W EARLY FRI MORNING.
$$

PKZ351-170300-
GULF OF ALASKA OFFSHORE NORTH OF 57N AND WEST OF 144W
400 AM AKST WED FEB 16 2011

...GALE WARNING THROUGH TONIGHT...

.TODAY...NW WIND 35 KT. SEAS 11 FT. 
.TONIGHT...N WIND 40 KT. SEAS 11 FT. 
.THU...NW WIND 25 KT. SEAS 10 FT. 
.THU NIGHT...W WIND 30 KT. SEAS 13 FT. 
.FRI...W WIND 35 KT. SEAS 15 FT. 
.SAT...NW WIND 40 KT. SEAS 18 FT. 
.SUN...NW WIND 30 KT. SEAS 14 FT.  

$$

PKZ352-170300-
GULF OF ALASKA OFFSHORE SOUTH OF 57N NORTH OF 55N AND WEST OF
144W
400 AM AKST WED FEB 16 2011

...GALE WARNING THROUGH TONIGHT...

.TODAY...NW WIND 35 KT INCREASING TO 45 KT IN THE AFTERNOON. SEAS
10 FT BUILDING TO 16 FT IN THE AFTERNOON. 
.TONIGHT...NW WIND 45 KT. SEAS 18 FT. 
.THU...W WIND 30 KT. SEAS 15 FT. 
.THU NIGHT...W WIND 35 KT. SEAS 13 FT. 
.FRI...W WIND 35 KT. SEAS 13 FT. 
.SAT...NW WIND 40 KT. SEAS 21 FT. 
.SUN...NW WIND 30 KT. SEAS 16 FT.  

$$

663 
FZAK61 PAFC 170003
OFFAER

OFFSHORE WATERS FORECAST
NATIONAL WEATHER SERVICE ANCHORAGE AK
400 PM AKST WED FEB 16 2011

OFFSHORE WATERS FORECAST FOR THE GULF OF ALASKA WEST OF 144W

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.

PKZ399-171500-
400 PM AKST WED FEB 16 2011
.SYNOPSIS FOR THE WESTERN GULF OF ALASKA...
A TROUGH OF LOW PRESSURE ALONG THE NORTH GULF COAST WILL PERSIST
THROUGH THU AFTERNOON. A 1009 MB LOW WILL DEVELOP NEAR 59N 145W 
FRI MORNING.
$$

PKZ351-171500-
GULF OF ALASKA OFFSHORE NORTH OF 57N AND WEST OF 144W
400 PM AKST WED FEB 16 2011

...GALE WARNING TONIGHT...

.TONIGHT...W OF 148W...NW WIND 35 KT. ELSEWHERE...NW WIND 
15 TO 25 KT. SEAS 7 TO 12 FT. 
.THU...NW WIND 25 KT BECOMING W 20 KT IN THE AFTERNOON. 
SEAS 6 TO 10 FT. 
.THU NIGHT...W WIND 30 KT. SEAS BUILDING TO 12 FT. 
.FRI...W WIND 35 KT. SEAS 13 FT. 
.FRI NIGHT...W WIND 35 KT. SEAS 15 FT. 
.SAT...NW WIND 40 KT. SEAS 18 FT. 
.SUN...NW WIND 30 KT. SEAS 14 FT. 
.MON...W WIND 30 KT. SEAS 11 FT.  

$$

PKZ352-171500-
GULF OF ALASKA OFFSHORE SOUTH OF 57N NORTH OF 55N AND WEST OF 144W
400 PM AKST WED FEB 16 2011

...GALE WARNING TONIGHT...

.TONIGHT...NW WIND 35 TO 45 KT. SEAS 17 FT. 
.THU...NW WIND 25 KT. SEAS 15 FT. 
.THU NIGHT...W WIND 30 KT. SEAS 12 FT. 
.FRI AND FRI NIGHT...W WIND 35 KT. SEAS 13 FT. 
.SAT...NW WIND 40 KT. SEAS 21 FT. 
.SUN...NW WIND 30 KT. SEAS 16 FT. 
.MON...W WIND 30 KT. SEAS 10 FT.  

$$

851 
FZAK61 PAFC 171231
OFFAER

OFFSHORE WATERS FORECAST
NATIONAL WEATHER SERVICE ANCHORAGE AK
400 AM AKST THU FEB 17 2011

OFFSHORE WATERS FORECAST FOR THE GULF OF ALASKA WEST OF 144W

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.

PKZ399-180300-
400 AM AKST THU FEB 17 2011
.SYNOPSIS FOR THE WESTERN GULF OF ALASKA...
A TROUGH OF LOW PRESSURE ALONG THE NORTH GULF COAST WILL WEAKEN THU
AFTERNOON. A 1009 MB LOW WILL DEVELOP NEAR 60N 147W FRI MORNING AND
MOVE TO AROUND 60N 144W AT 1003 MB EARLY SAT MORNING.
$$

PKZ351-180300-
GULF OF ALASKA OFFSHORE NORTH OF 57N AND WEST OF 144W
400 AM AKST THU FEB 17 2011

.TODAY...NW WIND 20 KT. SEAS 10 FT. 
.TONIGHT...SW WIND 30 KT. SEAS 7 FT BUILDING TO 11 FT AFTER
MIDNIGHT. 
.FRI...W WIND 30 KT. SEAS 12 FT. RAIN.
.FRI NIGHT...W WIND 30 KT. SEAS 12 FT. 
.SAT...NW WIND 40 KT. SEAS 17 FT. 
.SUN...NW WIND 35 KT. SEAS 14 FT. 
.MON...W WIND 35 KT. SEAS 14 FT.  

$$

PKZ352-180300-
GULF OF ALASKA OFFSHORE SOUTH OF 57N NORTH OF 55N AND WEST OF
144W
400 AM AKST THU FEB 17 2011

.TODAY...NW WIND 25 KT. SEAS 15 FT. 
.TONIGHT...W WIND 25 KT. SEAS 10 FT. 
.FRI...W WIND 30 KT. SEAS 11 FT. RAIN.
.FRI NIGHT...W WIND 30 KT. SEAS 11 FT. 
.SAT...NW WIND 40 KT. SEAS 19 FT. 
.SUN...NW WIND 35 KT. SEAS 17 FT. 
.MON...W WIND 30 KT. SEAS 13 FT.  

$$

SOUTHCENTRAL AND SOUTHWEST ALASKA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE ANCHORAGE AK
400 PM AKST MON FEB 14 2011

.ANALYSIS AND UPPER LEVELS...
ANOTHER COLD AND DRY DAY CONTINUES ACROSS THE MAINLAND WITH AN ARCTIC
AIR MASS FIRMLY SITUATED OVER MUCH OF THE STATE AND AN UPPER LEVEL
RIDGE BUILDING IN FROM THE WEST. WARNING LEVEL GAP WINDS ARE
OCCURRING THROUGH THE COPPER RIVER DELTA AND AND OTHER FAVORABLE
NORTH-SOUTH PASSES ALONG THE NORTH GULF COAST SUCH AS THOMPSON PASS.
BREEZY CONDITIONS ARE ALSO PREVALENT ALONG COOK INLET AND THE
MATANUSKA VALLEY AS DUE TO A PRESSURE GRADIENT BETWEEN A DEPARTING
LOW IN THE SOUTHERN GULF AND HIGHER PRESSURE INLAND. THE UPPER LEVEL
JET ASSOCIATED WITH THE AFOREMENTIONED RIDGE IS CURRENTLY LOCATED
ALONG A LINE FROM BARROW TO KODIAK.

CONDITIONS ARE CALM OVER THE EASTERN BERING SEA AS WELL WITH THE
REGION DOMINATED BY BOTH THE UPPER LEVEL AND SURFACE BASED HIGH
PRESSURE AREAS. WINDS HAVE DIMINISHED OVER THE AKPEN AND EASTERN
ALEUTIANS AS THE UPPER LEVEL JET SHIFTS EASTWARD INTO SOUTHWEST
ALASKA. A FEW STRAY COLD AIR ADVECTION SHOWERS ARE AFFECTING THE
PRIBILOFS AND AKPEN...BUT THESE ARE QUICKLY DISSIPATING AS THE
NORTHERLY FLOW LESSENS. A WEATHER FRONT IS PRESSING EASTWARD OVER THE
WESTERN AND CENTRAL ALEUTIANS ON THE BACKSIDE OF THE UPPER LEVEL
RIDGE.

.MODEL DISCUSSION...
MODELS ARE IN VERY GOOD AGREEMENT SYNOPTICALLY WITH REGARDS TO THE
PROGRESSION AND STRENGTH OF THE UPPER LEVEL RIDGE THROUGH THE END OF
THE WEEK. MODELS ALSO INITIALIZED WELL WITH TWO SUBTLE UPPER LEVEL
SHORT WAVES CURRENTLY OVER SOUTHCENTRAL ALASKA THAT ARE ENHANCING THE
GAP WINDS ALONG THE COAST AND THE MAT VALLEY. THERE ARE SOME
DISCREPANCIES WITH THE TIMING OF A DECAYING WEATHER FRONT THAT MOVES
INTO SOUTHWEST ALASKA ON TUESDAY AFTERNOON...BUT THESE SHOULD HAVE
LITTLE IMPACT ON THE FORECAST.

.SHORT TERM FORECAST...HIGH WIND WARNINGS FROM THE EASTERN HALF OF
PRINCE WILLIAM SOUND THROUGH THE COPPER RIVER DELTA REMAIN IN EFFECT
TROUGH THE NIGHT. STRONG WINDS WILL REMAIN ALONG THE NORTH GULF COAST
INTO THE DAY TUESDAY AND THEN FINALLY TAPER OFF AS THE PRESSURE
GRADIENT SIGNIFICANTLY WEAKENS. WHILE THE NORTH GULF COAST WILL BE
THE WINDIEST PLACE THERE WILL BE CONTINUED STRONG WINDS THROUGH THE
NIGHT AROUND KODIAK ISLAND NORTHWARD THROUGH THE MAT-SU VALLEY. WIND
CHILLS ARE ALSO A CONCERN WITH WIND CHILL ADVISORIES FOR 40 BELOW
ZERO AND COLDER WIND CHILLS ARE IN EFFECT IN PORTIONS OF THE SUSITNA
VALLEY AS WELL AS THE COPPER RIVER BASIN AND THOMPSON PASS. THE
STRONG NORTHERLY WINDS WILL HELP KEEP SKIES CLEAR OVER THE NEXT FEW
DAYS FOR AREAS FROM THE ALASKA RANGE EAST.
SOUTHWEST ALASKA...ANOTHER COLD NIGHT TONIGHT BEFORE CLOUDS MOVE IN
AND TEMPERATURES MODERATE IN THE SOUTHERLY FLOW.
A LARGE STORM SYSTEM WILL IMPACT THE WESTERN ALEUTIANS AND WESTERN
BERING SEA FROM TUESDAY NIGHT INTO WEDNESDAY NIGHT.

.LONG TERM FORECAST...CONSIDERABLE DIVERGENCE IN MODELS SOLUTIONS
THIS WEEKEND MAKES THE LONG TERM FORECAST QUITE UNCERTAIN AT THIS
TIME. PROJECTED UPPER LEVEL PATTERNS ARE QUITE DIFFERENT WHICH
TRANSLATES TO VERY DIFFERENT FORECAST SOLUTIONS.

.AER/ALU...WATCH/WARNING SUMMARY
PUBLIC...HIGH WIND WARNING 131 135. WIND CHILL ADVISORY 131 141 145.
MARINE...GALE 121 129 130 132 150 155 165 170 171 172 175 179 180
185.
STORM WARNING 176.
HEAVY FREEZING SPRAY ALL GULF COAST AREAS AND AREAS 150 160 185.
FIRE WEATHER...NONE.

FEB 11