Gale Warning 993, NWS Anchorage, AK

460 
FZAK62 PAFC 041234
OFFALU

OFFSHORE WATERS FORECAST
NATIONAL WEATHER SERVICE ANCHORAGE AK
400 AM AKST SAT DEC 4 2010

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 SAT DEC 4 2010
.SYNOPSIS FOR CENTRAL BERING SEA...

A 988 MB LOW NEAR 60N 163W MOVES TO 56N 154W AT 997 MB SUN MORNING
AND DISSIPATES. HIGH PRESSURE OVER THE WESTERN BERING MOVES INTO THE
CENTRAL BERING BY SUN AFTERNOON.

$$

PKZ411-050300-
BERING SEA OFFSHORE WEST OF 180 AND EAST OF THE INTERNATIONAL
DATELINE
400 AM AKST SAT DEC 4 2010

.TODAY...NW WIND 30 KT. SEAS 20 FT. FREEZING SPRAY. 
.TONIGHT...S WIND 25 KT. SEAS 14 FT. 
.SUN AND SUN NIGHT...S WIND 35 KT. SEAS 14 FT.  
.MON...W WIND 30 KT. SEAS 14 FT. 
.TUE...NW WIND 20 KT. SEAS 10 FT. 
.WED...VARIABLE WIND 10 KT. SEAS 7 FT.  

$$

PKZ412-050300-
BERING SEA OFFSHORE 171W TO 180 AND NORTH OF 56N
400 AM AKST SAT DEC 4 2010

...GALE WARNING THROUGH TONIGHT...

.TODAY...NW WIND 45 KT. SEAS 25 FT. FREEZING SPRAY. 
.TONIGHT...NW WIND 35 KT. SEAS 22 FT. FREEZING SPRAY. 
.SUN...E OF 176W...NW WIND 30 KT. SEAS 18 FT. W OF 176W...S WIND 15
KT. SEAS 11 FT. FREEZING SPRAY. 
.SUN NIGHT...S WIND 25 KT. SEAS 12 FT. 
.MON...SW WIND 30 KT. SEAS 12 FT. 
.TUE...NW WIND 25 KT. SEAS 10 FT. 
.WED...N WIND 30 KT. SEAS 11 FT.  

$$

PKZ413-050300-
BERING SEA OFFSHORE 171W TO 180 AND SOUTH OF 56N
400 AM AKST SAT DEC 4 2010

...GALE WARNING THROUGH TONIGHT...

.TODAY...NW WIND 40 KT. SEAS 23 FT. 
.TONIGHT...E OF 176W...NW WIND 35 KT. SEAS 21 FT. W OF 176W...NW WIND
15 KT. SEAS 16 FT.
.SUN...E OF 176W...NW WIND 30 KT. SEAS 20 FT. W OF 176W...S WIND 15
KT. SEAS 12 FT.
.SUN NIGHT...SW WIND 25 KT. SEAS 14 FT. 
.MON...W WIND 25 KT. SEAS 9 FT. 
.TUE...NW WIND 25 KT. SEAS 8 FT. 
.WED...N WIND 30 KT. SEAS 11 FT.  

$$

PKZ414-050300-
BERING SEA OFFSHORE EAST OF 171W
400 AM AKST SAT DEC 4 2010

...GALE WARNING THROUGH SUNDAY...

.TODAY...NW WIND 45 KT. SEAS 25 FT. 
.TONIGHT...NW WIND 40 KT. SEAS 25 FT. FREEZING SPRAY. 
.SUN...N WIND 40 KT. SEAS 19 FT. FREEZING SPRAY. 
.SUN NIGHT...N WIND 35 KT. SEAS 17 FT. 
.MON AND TUE...N WIND 30 KT. SEAS 10 FT.  
.WED...N WIND 35 KT. SEAS 14 FT.  

$$

380 
FZAK62 PAFC 050009
OFFALU

OFFSHORE WATERS FORECAST
NATIONAL WEATHER SERVICE ANCHORAGE AK
400 PM AKST SAT DEC 4 2010

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.

PKZ499-051500-
400 PM AKST SAT DEC 4 2010
.SYNOPSIS FOR CENTRAL BERING SEA...

A 990 MB LOW AT 58N 160W WEAKENS TO 999 MB AT 54N 155W SUN MORNING
AND THEN DISSIPATES. HIGH PRESSURE BUILDS OVER CENTRAL AND WESTERN
BERING THROUGH MON AFTERNOON. 
$$

PKZ411-051500-
BERING SEA OFFSHORE WEST OF 180 AND EAST OF THE INTERNATIONAL
DATELINE
400 PM AKST SAT DEC 4 2010

...GALE WARNING SUNDAY NIGHT...

.TONIGHT...NW WIND 15 KT BECOMING S 25 KT AFTER MIDNIGHT. SEAS 9 FT.
.SUN...S WIND 30 KT. SEAS 11 FT. 
.SUN NIGHT...S WIND 35 KT. SEAS 14 FT. 
.MON...SW WIND 30 KT. SEAS 14 FT. 
.MON NIGHT...W WIND 25 KT. SEAS 12 FT. 
.TUE...NW WIND 20 KT. SEAS 9 FT. 
.WED...VARIABLE WIND 10 KT. SEAS 7 FT. 
.THU...NE WIND 15 KT. SEAS 5 FT. 

$$

PKZ412-051500-
BERING SEA OFFSHORE 171W TO 180 AND NORTH OF 56N
400 PM AKST SAT DEC 4 2010

...GALE WARNING TONIGHT...

.TONIGHT...NW WIND 35 KT. SEAS 17 FT. FREEZING SPRAY. 
.SUN...NW WIND 30 KT. SEAS 14 FT. FREEZING SPRAY. 
.SUN NIGHT...S WIND 25 KT. SEAS 10 FT. 
.MON...S WIND 30 KT. SEAS 11 FT. 
.MON NIGHT...W WIND 20 KT. SEAS 11 FT. 
.TUE...NW WIND 25 KT. SEAS 10 FT. 
.WED...N WIND 30 KT. SEAS 11 FT. 
.THU...N WIND 25 KT. SEAS 9 FT.  

$$

PKZ413-051500-
BERING SEA OFFSHORE 171W TO 180 AND SOUTH OF 56N
400 PM AKST SAT DEC 4 2010

...GALE WARNING TONIGHT...

.TONIGHT...NW WIND 35 TO 45 KT. SEAS 20 FT. 
.SUN...NW WIND 30 KT. SEAS 16 FT. 
.SUN NIGHT...SW WIND 25 KT. SEAS 11 FT. 
.MON...SW WIND 25 KT. SEAS 9 FT. 
.MON NIGHT...W WIND 20 KT. SEAS 8 FT. 
.TUE...NW WIND 25 KT. SEAS 8 FT. 
.WED AND THU...N WIND 30 KT. SEAS 11 FT.  

$$

PKZ414-051500-
BERING SEA OFFSHORE EAST OF 171W
400 PM AKST SAT DEC 4 2010

...GALE WARNING THROUGH SUNDAY NIGHT...

.TONIGHT...NW WIND 45 KT. SEAS 21 FT. FREEZING SPRAY. 
.SUN...N WIND 40 KT. SEAS 19 FT. FREEZING SPRAY. 
.SUN NIGHT...N WIND 35 KT. SEAS 15 FT. FREEZING SPRAY. 
.MON...N WIND 30 KT. SEAS 11 FT. 
.MON NIGHT...NW WIND 25 KT. SEAS 7 FT. 
.TUE...N WIND 30 KT. SEAS 9 FT. 
.WED AND THU...N WIND 35 KT. SEAS 14 FT.  

$$

672 
FZAK62 PAFC 051224
OFFALU

OFFSHORE WATERS FORECAST
NATIONAL WEATHER SERVICE ANCHORAGE AK
400 AM AKST SUN DEC 5 2010

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.

PKZ499-060300-
400 AM AKST SUN DEC 5 2010
.SYNOPSIS FOR CENTRAL BERING SEA...

A 997 MB LOW NEAR 56N 154W WILL DISSIPATE SUN MORNING. A FRONT
APPROACHING THE WESTERN BERING WILL SLOWLY TRACK NORTHEAST TO THE
NORTHERN BERING EARLY TUE MORNING AND WEAKEN. AN AREA OF HIGH
PRESSURE WILL PERSIST OVER THE SOUTHERN BERING THROUGH MON AND THEN
BUILD INTO THE WESTERN BERING ON TUE.

$$

PKZ411-060300-
BERING SEA OFFSHORE WEST OF 180 AND EAST OF THE INTERNATIONAL
DATELINE
400 AM AKST SUN DEC 5 2010

...GALE WARNING TONIGHT...

.TODAY...S WIND 20 TO 30 KT. SEAS 13 FT. 
.TONIGHT...S WIND 35 KT. SEAS 14 FT. 
.MON...SW WIND 30 KT. SEAS 14 FT. 
.MON NIGHT...W WIND 25 KT. SEAS 14 FT. 
.TUE...NW WIND 20 KT. SEAS 10 FT. 
.WED...VARIABLE WIND 10 KT. SEAS 7 FT. 
.THU...NE WIND 15 KT. SEAS 6 FT. 

$$

PKZ412-060300-
BERING SEA OFFSHORE 171W TO 180 AND NORTH OF 56N
400 AM AKST SUN DEC 5 2010

.TODAY...E OF 176W...NW WIND 30 KT. SEAS 18 FT. W OF 176W...SW WIND
15 KT. SEAS 11 FT. FREEZING SPRAY. 
.TONIGHT...W OF 176W...S WIND 25 KT. E OF 176W...NW WIND 15 KT. SEAS
12 FT. 
.MON...S WIND 30 KT. SEAS 11 FT. 
.MON NIGHT...W WIND 25 KT. SEAS 12 FT. 
.TUE...NW WIND 30 KT. SEAS 11 FT. 
.WED...N WIND 30 KT. SEAS 12 FT. 
.THU...N WIND 25 KT. SEAS 9 FT.  

$$

PKZ413-060300-
BERING SEA OFFSHORE 171W TO 180 AND SOUTH OF 56N
400 AM AKST SUN DEC 5 2010

...GALE WARNING TODAY...

.TODAY...E OF 176W...NW WIND 40 KT DIMINISHING TO 30 KT LATE THIS
MORNING. SEAS 21 FT SUBSIDING TO 15 FT THIS AFTERNOON. W OF 176W...S
WIND 10 KT. SEAS 12 FT.
.TONIGHT...E OF 176W...NW WIND 25 KT. W OF 176W...SW WIND 25 KT. SEAS
14 FT. 
.MON...SW WIND 25 KT. SEAS 10 FT. 
.MON NIGHT...W WIND 20 KT. SEAS 9 FT. 
.TUE...N WIND 30 KT. SEAS 9 FT. 
.WED AND THU...N WIND 30 KT. SEAS 12 FT.   

$$

PKZ414-060300-
BERING SEA OFFSHORE EAST OF 171W
400 AM AKST SUN DEC 5 2010

...GALE WARNING THROUGH TONIGHT...

.TODAY...N WIND 40 KT. SEAS 21 FT. FREEZING SPRAY. 
.TONIGHT...N WIND 35 KT. SEAS 17 FT. FREEZING SPRAY. 
.MON...N WIND 30 KT. SEAS 13 FT. FREEZING SPRAY. 
.MON NIGHT...NW WIND 25 KT. SEAS 9 FT. 
.TUE...N WIND 30 KT. SEAS 10 FT. 
.WED AND THU...N WIND 35 KT. SEAS 15 FT.   

$$

999
FZAK62 PAFC 060008
OFFALU

OFFSHORE WATERS FORECAST
NATIONAL WEATHER SERVICE ANCHORAGE AK
400 PM AKST SUN DEC 5 2010

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.

PKZ499-061500-
400 PM AKST SUN DEC 5 2010
.SYNOPSIS FOR CENTRAL BERING SEA...

A FRONT APPROACHING THE WESTERN BERING WILL SLOWLY TRACK NORTHEAST 
TO THE NORTHERN BERING EARLY TUE MORNING AND WEAKEN. AN AREA OF HIGH
PRESSURE WILL PERSIST OVER THE SOUTHERN BERING THROUGH MON AND THEN
BUILD INTO THE WESTERN BERING ON TUE. 
$$

PKZ411-061500-
BERING SEA OFFSHORE WEST OF 180 AND EAST OF THE INTERNATIONAL
DATELINE
400 PM AKST SUN DEC 5 2010

...GALE WARNING TONIGHT...

.TONIGHT...S WIND 35 KT. SEAS 14 FT. 
.MON...SW WIND 30 KT. SEAS 12 FT. 
.MON NIGHT...W WIND 25 KT. SEAS 10 FT. 
.TUE...W WIND 20 KT. SEAS 8 FT. 
.TUE NIGHT...W WIND 15 KT. SEAS 7 FT. 
.WED...VARIABLE WIND 10 KT. SEAS 6 FT. 
.THU...NE WIND 15 KT. SEAS 6 FT.
.FRI...VARIABLE WIND 10 KT. SEAS 5 FT.  
$$

PKZ412-061500-
BERING SEA OFFSHORE 171W TO 180 AND NORTH OF 56N
400 PM AKST SUN DEC 5 2010

.TONIGHT...S WIND 25 KT. SEAS 12 FT. 
.MON...S WIND 30 KT. SEAS 12 FT. 
.MON NIGHT...W WIND 25 KT. SEAS 10 FT. 
.TUE AND TUE NIGHT...NW WIND 25 KT. SEAS 9 FT. 
.WED AND THU...N WIND 25 KT. SEAS 8 FT. 
.FRI...NW WIND 15 KT. SEAS 5 FT.  

$$

PKZ413-061500-
BERING SEA OFFSHORE 171W TO 180 AND SOUTH OF 56N
400 PM AKST SUN DEC 5 2010

.TONIGHT...N WIND 25 KT EXCEPT S 25 KT W OF 175W. SEAS 14 FT. 
.MON...SW WIND 25 KT. SEAS 10 FT. 
.MON NIGHT...W WIND 20 KT. SEAS 8 FT. 
.TUE...NW WIND 25 KT. SEAS 9 FT. 
.TUE NIGHT THROUGH THU...N WIND 30 KT. SEAS 11 FT. 
.FRI...N WIND 20 KT. SEAS 7 FT.  

$$

PKZ414-061500-
BERING SEA OFFSHORE EAST OF 171W
400 PM AKST SUN DEC 5 2010

...GALE WARNING TONIGHT...

.TONIGHT...N WIND 35 KT. SEAS 17 FT. FREEZING SPRAY. 
.MON...N WIND 30 KT. SEAS 13 FT. FREEZING SPRAY. 
.MON NIGHT...NW WIND 25 KT. SEAS 9 FT. FREEZING SPRAY. 
.TUE AND TUE NIGHT...NW WIND 30 KT. SEAS 11 FT. 
.WED AND THU...N WIND 35 KT. SEAS 15 FT. 
.FRI...N WIND 25 KT. SEAS 11 FT.  

$$

SOUTHCENTRAL AND SOUTHWEST ALASKA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE ANCHORAGE AK
500 AM AKST FRI DEC 3 2010

.MODEL DISCUSSION...00Z MODELS IN BASIC AGREEMENT ON DEPICTION
OF DEEP VERTICALLY STACKED LOW CURRENTLY JUST W OF PRIBILOFS.
AND WITH MOVEMENT THROUGH SHORT TERM OF IT AND STRONG OCCLUDED
FRONTAL SYSTEM...AIDED BY 150KT SWRLY JET JUST S OF EASTERN
ALEUTIANS/AK PEN. USED NAM FOR IT'S HANDLING OF TRIPLE POINT
LOW FORECAST TO MOVE NE UP COOK INLET LATER TODAY/TONIGHT.

.ANALYSIS AND UPPER LEVELS...500 DM UPPER LOW NEAR PRIBILOFS
TO SLOWLY MOVE E TODAY/TONIGHT...MOVING ASHORE OVER Y-K DELTA
12Z SAT. IT WILL THEN WEAKEN SIGNIFICANTLY AND DROP S INTO WRN
GULF AK AND N PAC SAT NIGHT/SUN AS UPPER RIDGING AMPLIFIES N
OVER BC AND SE AK. OCCLUDED FRONT STALLS OVER ERN GULF COAST
SAT...THEN ROLLS BACK W AS A WARM FRONT SAT NIGHT/SUN AS UPPER
RIDGING AMPLIFIES TO THE E.

.SHORT TERM FORECAST...BLIZZARD CONDITIONS SW MAINLAND ENDING
QUICKLY BY THIS AFTERNOON AS FRONT MOVES E. INCREASING WINDS AND
SNOW S CENTRAL TODAY...HEAVIEST AMOUNTS SUSITNA VALLEY W OF
PARKS HIGHWAY. STRONG WINDS LIKELY TURNAGAIN ARM AND ANCHORAGE
HILLSIDE LATER TODAY AND THIS EVENING. AIRMASS REMAINING COLD
ENOUGH FOR SNOW AND WIND TO COMBINE FOR BLIZZARD CONDITIONS
HOMER BENCH TODAY...AND THIS AFTERNOON/EVENING PRINCE WILLIAM
SOUND...PORTAGE VALLEY...AND EASTERN TURNAGAIN ARM. SNOW WILL
DIMINISH ALL AREAS EXCEPT SUSITNA VALLEY W OF THE PARKS HIGHWAY
THIS EVENING AS FRONT MOVES E. SCATTERED SNOW SHOWERS ALL AREAS
SAT...MIXED WITH RAIN IN KODIAK. PRECIP. WILL START AS SNOW IN
KODIAK THIS MORNING...BUT WILL QUICKLY CHANGE TO RAIN. INCREASING
-SHRASN ERN ALEUTIANS AND AK PEN TODAY...CHANGING TO ALL SNOW BY
LATE TONIGHT AS COLD ADVECTION AND GUSTY NW WINDS ON BACK SIDE
OF LOW MOVE IN...CONTINUING THROUGH SAT.

.LONG TERM FORECAST...RIDGING BUILDS IN OVER SE AK...S-CENTRAL
AND ERN INTERIOR SUN-TUE. WEAK UPPER TROUGHING REMAINS OVER SW
AND WRN MAINLAND AK. UPPER RIDGING BUILDING N OVER WRN ALEUTIANS
LATE SAT/SUN REMAINS NEARLY STATIONARY AND FORMS CLOSED CENTER
BY TUE. RAIN/SNOW WILL ROLL BACK W ALONG GULF COAST TO PRINCE
WILLIAM SOUND SUN...AND KENAI SUN NIGHT...AND KODIAK MON. LIGHTER
PRECIP. LIKELY INLAND S-CENTRAL AND COPPER RIVER BASIN SUN AND
SUN NIGHT. SHOULD BE COLD ENOUGH FOR SNOW MOST AREAS S-CENTRAL.
SNOW SHOWERS WITH STRONG NRLY WINDS ERN ALEUTIANS/AK PEN SUN
WILL DIMINISH MON AS UPPER RIDGING BUILDS IN FROM THE W.

.AER/ALU...WATCH/WARNING SUMMARY
PUBLIC...BLIZZARD WARNING 121 125 131 135 161
         HIGH WIND WARNING 101
         WINTER STORM WARNING HEAVY SNOW 145
MARINE...STORM 120 125 130
          GALE 150 155 160 165 170 171 172 175 176 179 180 185
               129 132 138 140 141 411 412 413 414 351 352 127
               128
          HEAVY FREEZING SPRAY 127

FIRE WEATHER...NONE

MAR DEC 10

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ANCHORAGE AK
1140 AM AKST FRI DEC 3 2010

AKZ101-040400-

...HAZARDOUS WINTER CONDITIONS IN ANCHORAGE LATER TODAY...

A LOW PRESSURE SYSTEM TRACKING NORTH UP COOK INLET TODAY HAS THE
POTENTIAL TO BRING A SHORT PERIOD OF HAZARDOUS CONDITIONS TO THE
ANCHORAGE AREA LATE THIS AFTERNOON. WINDS HAVE INCREASED RAPIDLY TO
NEAR 80 MPH ALONG TURNAGAIN ARM AND PORTIONS OF THE HILLSIDE THIS
MORNING...AND WILL CONTINUE THROUGH EARLY EVENING. AS THE LOW TRACKS
CLOSER TO ANCHORAGE IN THE EARLY AFTERNOON HOURS...WINDS WILL SPREAD
NORTHWARD AND AFFECT THE ANCHORAGE BOWL. SOUTHEAST WINDS OF 20 TO 30
MPH WITH GUSTS TO 45 MPH ARE POSSIBLE BY LATER IN THE AFTERNOON AND
INTO THE EVENING. WIDESPREAD SNOW WILL ALSO DEVELOP AROUND THE TIME
THESE WINDS MOVE INTO THE ANCHORAGE AREA...CREATING THE POTENTIAL FOR
BLOWING SNOW AND SIGNIFICANTLY REDUCED VISIBILITY DURING THE
AFTERNOON RUSH HOUR.

ANY STRONG WINDS IN ANCHORAGE WILL BE SHORT LIVED...DECLINING
SIGNIFICANTLY AND SWITCHING TO THE SOUTH BY MID EVENING.
HOWEVER...DURING THIS TIME SNOW WILL INCREASE IN
INTENSITY...ACCUMULATING SEVERAL INCHES BY MIDNIGHT...BEFORE TAPERING
OFF TO SNOW SHOWERS IN THE EARLY MORNING HOURS.

MANY OF THE IMPACTS WITH THIS STORM SYSTEM WILL DEPEND ON THE EXACT
TRACK OF THE LOW...WHICH STILL INCLUDES SOME UNCERTAINTY. STAY TUNED
TO NOAA WEATHER RADIO OR YOUR LOCAL MEDIA OUTLETS FOR THE LATEST
DETAILS ON THIS STORM. THIS INFORMATION CAN ALSO BE OBTAINED ONLINE
AT WWW.WEATHER.GOV/ANCHORAGE.

AMD/KS/JHW/BH