Hurricane Force Wind Warning 4, NWS Anchorage, AK

490 
FZAK62 PAFC 182359
OFFALU

OFFSHORE WATERS FORECAST
NATIONAL WEATHER SERVICE ANCHORAGE AK
400 PM AKST MON FEB 18 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.

PKZ499-191500-
400 PM AKST MON FEB 18 2013
.SYNOPSIS FOR CENTRAL BERING SEA...

A 956 MB LOW NEAR 56N 179E MOVES TO 59N 168W AND WEAKENS TO 977 MB
EARLY WED MORNING. A SECONDARY 984 MB LOW MOVES TO 57N 174E
WED AFTERNOON. 

$$

PKZ411-191500-
BERING SEA OFFSHORE WEST OF 180 AND EAST OF THE INTERNATIONAL
DATELINE
400 PM AKST MON FEB 18 2013

...STORM WARNING TONIGHT...

.TONIGHT...E WIND 50 KT. S OF 58N...SW WIND 45 KT. SEAS 19 TO 26 FT.
SNOW SHOWERS. FREEZING SPRAY W OF 178E. 
.TUE...SW WIND 40 KT BECOMING S 30 KT IN THE AFTERNOON. SEAS 19 FT.
FREEZING SPRAY W OF 178E IN THE MORNING. 
.TUE NIGHT...S WIND 25 KT. SEAS 15 FT. 
.WED...S WIND 25 KT. SEAS 12 FT. 
.WED NIGHT...SW WIND 20 KT. SEAS 10 FT. 
.THU...SW WIND 35 KT. SEAS 12 FT. 
.FRI...N WIND 30 KT. SEAS 16 FT. 
.SAT...N WIND 25 KT. SEAS 14 FT.  

$$

PKZ412-191500-
BERING SEA OFFSHORE 171W TO 180 AND NORTH OF 56N
400 PM AKST MON FEB 18 2013

...STORM WARNING TONIGHT...

.TONIGHT...S WIND 40 TO 50 KT. SEAS IN ICE FREE WATERS 25 FT. SNOW.
.TUE...S WIND 25 TO 35 KT. SEAS IN ICE FREE WATERS 15 TO 22 FT. 
.TUE NIGHT...SE WIND 25 KT. SEAS IN ICE FREE WATERS 14 FT. 
.WED...SE WIND 20 KT. SEAS IN ICE FREE WATERS 11 FT. 
.WED NIGHT...S WIND 20 KT. SEAS IN ICE FREE WATERS 9 FT. 
.THU...S WIND 25 KT. SEAS IN ICE FREE WATERS 11 FT. 
.FRI...E WIND 35 KT. SEAS IN ICE FREE WATERS 15 FT. 
.SAT...N WIND 30 KT. SEAS IN ICE FREE WATERS 14 FT.  

$$

PKZ413-191500-
BERING SEA OFFSHORE 171W TO 180 AND SOUTH OF 56N
400 PM AKST MON FEB 18 2013

...STORM WARNING TONIGHT...

.TONIGHT...SW WIND 40 TO 50 KT DIMINISHING TO 20 TO 35 KT AFTER
MIDNIGHT. SEAS 15 TO 24 FT. 
.TUE...SW WIND 25 TO 35 KT. SEAS 10 TO 18 FT. 
.TUE NIGHT...S WIND 20 KT. SEAS 13 FT. 
.WED AND WED NIGHT...SW WIND 25 KT. SEAS 11 FT. 
.THU...SW WIND 35 KT. SEAS 13 FT. 
.FRI...W WIND 35 KT. SEAS 18 FT. 
.SAT...NW WIND 30 KT. SEAS 17 FT.  

$$

PKZ414-191500-
BERING SEA OFFSHORE EAST OF 171W
400 PM AKST MON FEB 18 2013

...GALE WARNING TONIGHT...

.TONIGHT...S WIND 35 KT BECOMING VARIABLE 15 KT AFTER MIDNIGHT. SEAS
IN ICE FREE WATERS 14 FT SUBSIDING TO 8 FT AFTER MIDNIGHT. SNOW.
.TUE...NE WIND 30 KT. W OF 167W...VARIABLE WIND 15 KT. SEAS IN ICE
FREE WATERS 10 FT. FREEZING SPRAY NEAR THE ICE EDGE. 
.TUE NIGHT...VARIABLE WIND 15 KT. SEAS IN ICE FREE WATERS 9 FT. 
.WED...NW WIND 20 KT. SEAS IN ICE FREE WATERS 8 FT. 
.WED NIGHT...SE WIND 15 KT. SEAS IN ICE FREE WATERS 7 FT. 
.THU...W WIND 30 KT. SEAS IN ICE FREE WATERS 11 FT. 
.FRI...SE WIND 40 KT. SEAS IN ICE FREE WATERS 19 FT. 
.SAT...NW WIND 35 KT. SEAS IN ICE FREE WATERS 19 FT.  

$$

SOUTHCENTRAL AND SOUTHWEST ALASKA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE ANCHORAGE AK
200 PM AKST SUN FEB 17 2013

SOUTHERN AND FASTER PORTION OF UPPER TROF MOVING EAST OUT OF BRISTOL
BAY AND IS NOW ENTERING THE GULF OF ALASKA. THIS FEATURE WILL QUICKLY
MOVE SOUTHEAST OUT OF THE FORECAST AREA TONIGHT. WINDIER,DRIER AND
COLDER CONDITIONS FOLLOWING IN BEHIND. AXIS OF THE MUCH SLOWER
NORTHERN PORTION OF THE TROF NOT EXPECTED TO CROSS 150 W UNTIL MID
DAY MON, WHICH MEANS SNOW WILL BE SLOW TO END ACROSS SOUTH CENTRAL
ALASKA WITH THE HEAVIEST AMOUNTS OCCURRING LATER TONIGHT. SNOW ACROSS
THE SUSITNA VALLEY AND KENAI PENINSULA WILL END MONDAY MORNING AS
HIGH PRESSURE BUILDS IN FROM THE WEST. SNOWFALL OVER ZONE 141 MAY NOT
END UNTIL LATE MON EVE. WINDS WILL BE SLOW TO INCREASE OVER SUN NIGHT
THEN SHOULD INCREASE AND BECOME RATHER STRONG MON AND MON EVE WHEN
UPPER SUPPORT IS BEST. GALES ALREADY BEGINNING ACROSS THE KODIAK
MARINE ZONES AS THE FASTER SOUTHERN TROF MOVES OUT.

HIGH PRESSURE MOVES ACROSS SOUTHERN ALASKA MON NIGHT AHEAD OF NEXT
BERING STORM. THE ASSOCIATED FRONT SHOULD MAKE LANDFALL MON EVENING.
WAVE FORMING ALONG THE FRONT FORECAST BY THE GFS TO DEVELOP INTO A
MODERATE 978 MB STORM AND BRING MORE RAIN SNOW AND WIND TO THE ALASKA
PENINSULA, KODIAK ISLAND AND BRISTOL BAY ON LATE MON AND TUE. THIS
LOW SHOULD DROP INTO THE GULF LATE TUE AND WED AS HIGH PRESSURE ONCE
AGAIN BUILDS OVER THE EASTERN BERING SEA ALONG 165W. SEVERAL WEAKER
SYSTEMS WILL MOVE EASTWARD ALONG THE SOUTHERN BERING SEA WED THU AND
FRI AND WILL DISSIPATE AS THEY RUN INTO THE RIDGE OVER EASTERN
BRISTOL BAY AND KODIAK ISLAND. A STRONGER STORM WILL BRING GALES BACK
TO THE ALEUTIANS LATE IN THE WEEK AS A 972 MB CENTER MOVES TO NEAR
ADAK MIDDAY FRIDAY.

NO CHANGE THE NEXT 5 TO 7 DAYS AS THE PATTERN STAYS RATHER
PROGRESSIVE WITH NO SIGN OF ANY KIND OF BLOCK OCCURRING.

.AER/ALU...WATCH/WARNING SUMMARY
PUBLIC...BLIZZARD WATCH 131 AND 195.
MARINE...STORM AREAS 130 179 185 411 412 413 414.
GALE AREAS 120 127 132 136 137 138 140 150 160 165 170 180 171 172
175 176.
HEAVY FREEZING SPRAY AREAS 121 127 129 130 138 140 150 155 165.
FIRE WEATHER...NONE.

DP FEB 13