Storm Warning 48, NWS Anchorage, AK

614 
FZAK52 PAFC 211529 AAA
CWFALU

COASTAL WATERS FORECAST...UPDATED
NATIONAL WEATHER SERVICE ANCHORAGE ALASKA
630 AM AKST THU FEB 21 2013

UPDATED ZONES 150 AND 155

COASTAL WATERS FORECAST FOR SOUTHWEST ALASKA+BRISTOL BAY+THE
ALASKA PENINSULA WATERS AND THE ALEUTIAN ISLANDS UP TO 100 NM OUT.

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.

PKZ199-220300-
400 AM AKST THU FEB 21 2013
.SYNOPSIS FOR SOUTHWEST ALASKA+BRISTOL BAY+THE ALASKA
PENINSULA WATERS AND THE ALEUTIAN ISLANDS...

A 981 MB LOW  150 NM SOUTH OF COLD BAY WILL STRENGTHEN TO 975 MB AS
IT MOVES INTO THE GULF OF ALASKA THU NIGHT. A 974 MB NORTH PACIFIC
LOW WILL MOVE TO 300 NM SOUTHEAST OF SHEMYA THU NIGHT AND WILL
STRENGTHEN TO 967 MB AS IT MOVES TO 120 NM SOUTH OF AMCHITKA FRI
MORNING...AND THEN MOVE TO 90 NM NORTHEAST OF ATKA AT 963 MB. A
COMPLEX LOW WITH A 984 MB CENTER 250 NM NORTH OF SHEMYA WILL
DISSIPATE FRI MORNING.

$$

PKZ150-220300-
COASTAL WATERS SOUTH OF THE ALASKA PENINSULA SITKINAK TO CASTLE
CAPE
630 AM AKST THU FEB 21 2013

...GALE WARNING TONIGHT AND FRIDAY...

.TODAY...NE WIND 15 KT BECOMING NW 35 KT LATE THIS AFTERNOON. 
SEAS 11 FT. FREEZING SPRAY NEAR THE COAST IN THE AFTERNOON. 
.TONIGHT...NW WIND 40 KT. SEAS 13 FT BUILDING TO 17 FT AFTER
MIDNIGHT. FREEZING SPRAY NEAR THE COAST. 
.FRI...W WIND 35 KT BECOMING SW 20 KT IN THE AFTERNOON. SEAS 14 FT.
PATCHY FOG. 
.FRI NIGHT...S WIND 40 KT. SEAS 19 FT. 
.SAT...SW WIND 45 KT. SEAS 25 FT. 
.SUN...W WIND 25 KT. SEAS 22 FT. 
.MON...NE WIND 20 KT. SEAS 11 FT.  

$$

PKZ155-220300-
COASTAL WATERS SOUTH OF THE ALASKA PENINSULA CASTLE CAPE TO CAPE
SARICHEF
630 AM AKST THU FEB 21 2013

...GALE WARNING TODAY AND FRIDAY...

.TODAY...N WIND 40 KT BECOMING NW 30 KT IN THE AFTERNOON. 
SEAS 16 FT. SNOW AND RAIN. 
.TONIGHT...W WIND 30 KT. SEAS 17 FT. 
.FRI...SW WIND 25 KT BECOMING SE 45 KT IN THE AFTERNOON. 
SEAS 16 FT. PATCHY FOG. RAIN AND SNOW. 
.FRI NIGHT...SW WIND 45 KT. SEAS 25 FT. 
.SAT...SW WIND 50 KT. SEAS 32 FT. 
.SUN...W WIND 30 KT. SEAS 19 FT. 
.MON...N WIND 20 KT. SEAS 14 FT.  

$$

PKZ160-220300-
BRISTOL BAY WATERS CAPE NEWENHAM TO PORT HEIDEN
400 AM AKST THU FEB 21 2013

...BRISK WIND ADVISORY TONIGHT AND FRIDAY...

.TODAY...N WIND 10 KT BECOMING W 20 KT IN THE AFTERNOON.  
.TONIGHT...W WIND 20 KT INCREASING TO 30 KT AFTER MIDNIGHT.  
.FRI...W WIND 30 KT BECOMING S 20 KT IN THE AFTERNOON.  
.FRI NIGHT...SE WIND 35 KT. 
.SAT...S WIND 35 KT. 
.SUN...NW WIND 25 KT. 
.MON...NE WIND 20 KT.  

$$

PKZ165-220300-
PORT HEIDEN TO CAPE SARICHEF
400 AM AKST THU FEB 21 2013

...GALE WARNING FRIDAY...

.TODAY...NE WIND 15 KT BECOMING W 25 KT IN THE AFTERNOON...EXCEPT W
15 KT E OF PORT MOLLER. SEAS 3 FT BUILDING TO 6 FT IN THE AFTERNOON.
SNOW AND RAIN SHOWERS. 
.TONIGHT...W WIND 30 KT. SEAS 10 FT. SNOW SHOWERS. 
.FRI...SW WIND 25 KT BECOMING SE 35 KT IN THE AFTERNOON. FROM PORT
MOLLER E...SW WIND 25 KT. SEAS 9 FT. PATCHY FOG. SNOW AND RAIN. 
.FRI NIGHT...S WIND 40 KT. SEAS 15 FT. 
.SAT...W WIND 40 KT. SEAS 16 FT. 
.SUN...NW WIND 25 KT. SEAS 8 FT. 
.MON...N WIND 25 KT. SEAS 7 FT.  

$$

PKZ180-220300-
SOUTHWEST ALASKA WATERS CAPE NEWENHAM TO DALL POINT
400 AM AKST THU FEB 21 2013

.TODAY...VARIABLE WIND 10 KT. 
.TONIGHT...VARIABLE WIND 10 KT BECOMING NW 20 KT AFTER MIDNIGHT. N OF
NUNIVAK ISLAND...VARIABLE WIND LESS THAN 10 KT.  
.FRI...NE WIND 15 KT. 
.FRI NIGHT...NE WIND 30 KT. 
.SAT...N WIND 35 KT. 
.SUN...NW WIND 20 KT. 
.MON...N WIND 15 KT.  

$$

PKZ170-220300-
EASTERN ALEUTIANS CAPE SARICHEF TO NIKOLSKI
400 AM AKST THU FEB 21 2013

...GALE WARNING FRIDAY...

.TODAY...NW WIND 25 KT BECOMING W 30 KT IN THE AFTERNOON. SEAS 9 FT
BERING SIDE...16 FT PACIFIC SIDE. SNOW AND RAIN SHOWERS. 
.TONIGHT...W WIND 30 KT. SEAS 11 FT BERING SIDE...15 FT PACIFIC SIDE.
PATCHY FOG. 
.FRI...S WIND 25 KT INCREASING TO 45 KT IN THE LATE MORNING. SEAS 11
FT BERING SIDE...18 FT PACIFIC SIDE. RAIN AND SNOW. 
.FRI NIGHT...SW WIND 55 KT. SEAS 33 FT. 
.SAT...W WIND 55 KT. SEAS 37 FT. 
.SUN...SE WIND 25 KT. SEAS 13 FT. 
.MON...NW WIND 20 KT. SEAS 17 FT.  

$$

PKZ171-220300-
UNALASKA BAY
400 AM AKST THU FEB 21 2013

...GALE WARNING FRIDAY...

.TODAY...N WIND 15 KT BECOMING W 25 KT IN THE AFTERNOON. SEAS 3 FT.
SNOW AND RAIN SHOWERS. 
.TONIGHT...W WIND 25 KT BECOMING SW 15 KT AFTER MIDNIGHT. SEAS 3 FT.
PATCHY FOG. 
.FRI...SE WIND 20 KT BECOMING S 35 KT IN THE AFTERNOON. GUSTS TO 45
KT IN THE AFTERNOON. SEAS 4 FT. RAIN AND SNOW. 
.FRI NIGHT...SW WIND 40 KT. SEAS 5 FT. 
.SAT...W WIND 40 KT. SEAS 16 FT. 
.SUN...SE WIND 20 KT. SEAS 3 FT. 
.MON...N WIND 15 KT. SEAS 5 FT.  

$$

PKZ172-220300-
EASTERN ALEUTIANS NIKOLSKI TO ADAK
400 AM AKST THU FEB 21 2013

...STORM WARNING FRIDAY...

.TODAY...W WIND 30 KT. SEAS 12 FT BERING SIDE...18 FT PACIFIC SIDE.
PATCHY FOG. 
.TONIGHT...SW WIND 30 KT BECOMING SE 45 KT AFTER MIDNIGHT. E OF
SEGUAM ISLAND...SW WIND 30 KT. SEAS 11 FT BERING SIDE...17 FT 
PACIFIC SIDE. PATCHY FOG. RAIN AND SNOW. 
.FRI...SE WIND 45 KT BECOMING SW 60 KT IN THE AFTERNOON. BERING
SIDE...SEAS 16 FT. PACIFIC SIDE...SEAS 21 FT BUILDING TO 39 FT 
IN THE AFTERNOON...EXCEPT 27 FT E OF SEGUAM ISLAND. SNOW AND RAIN. 
.FRI NIGHT...SW WIND 65 KT. SEAS 43 FT. 
.SAT...NW WIND 55 KT. SEAS 35 FT. 
.SUN...E WIND 25 KT. SEAS 15 FT. 
.MON...NW WIND 25 KT. SEAS 21 FT.  

$$

PKZ175-220300-
WESTERN ALEUTIANS ADAK TO KISKA
400 AM AKST THU FEB 21 2013

...HURRICANE FORCE WIND WARNING FRIDAY...

.TODAY...BERING SIDE...SW WIND 30 KT DIMINISHING TO 20 KT IN THE
AFTERNOON. SEAS 9 FT. PACIFIC SIDE...SW WIND 30 KT. SEAS 16 FT. 
SNOW SHOWERS. 
.TONIGHT...S WIND 30 KT BECOMING E 50 KT AFTER MIDNIGHT. SEAS 12 FT
BERING SIDE...15 FT BUILDING TO 19 FT PACIFIC SIDE. SNOW AND RAIN. 
.FRI...BERING SIDE...E WIND 45 KT BECOMING NW IN THE AFTERNOON...
SEAS 16 FT. PACIFIC SIDE...W WIND 65 KT...SEAS 27 FT BUILDING TO 
40 FT IN THE AFTERNOON. SNOW AND RAIN. 
.FRI NIGHT...NW WIND 65 KT. SEAS 35 FT. 
.SAT...W WIND 40 KT. SEAS 22 FT. 
.SUN...NE WIND 20 KT. SEAS 19 FT. 
.MON...SE WIND 20 KT. SEAS 21 FT.  

$$

PKZ176-220300-
WESTERN ALEUTIANS KISKA TO ATTU
400 AM AKST THU FEB 21 2013

...STORM WARNING FRIDAY...

.TODAY...SW WIND 20 KT. SEAS 13 FT. 
.TONIGHT...SE WIND 20 KT BECOMING NE 35 KT AFTER MIDNIGHT. FROM
SHEMYA W...E WIND 15 KT BECOMING NW 25 KT AFTER MIDNIGHT. SEAS
13 FT. SNOW AND RAIN. 
.FRI...NW WIND 55 KT EXCEPT NW 35 KT FROM SHEMYA W. SEAS 16 FT
BERING SIDE...25 FT PACIFIC SIDE. SNOW AND RAIN. 
.FRI NIGHT...NW WIND 45 KT. SEAS 22 FT. 
.SAT...SW WIND 30 KT. SEAS 18 FT. 
.SUN...VARIABLE WIND 10 KT. SEAS 16 FT. 
.MON...E WIND 20 KT. SEAS 14 FT.  

$$

PKZ185-220300-
ST MATTHEW ISLAND WATERS
400 AM AKST THU FEB 21 2013

...BRISK WIND ADVISORY FRIDAY...

.TODAY...E WIND 20 KT. 
.TONIGHT...NE WIND 20 KT. 
.FRI...NE WIND 25 KT. 
.FRI NIGHT...NE WIND 30 KT. 
.SAT...N WIND 30 KT. 
.SUN...N WIND 15 KT. 
.MON...NE WIND 15 KT.  

$$

PKZ179-220300-
PRIBILOF ISLANDS NEAR-SHORE WATERS
400 AM AKST THU FEB 21 2013

...SMALL CRAFT ADVISORY THROUGH FRIDAY...

.TODAY...VARIABLE WIND 10 KT BECOMING SW 25 KT IN THE AFTERNOON.
SEAS IN ICE FREE WATERS 4 FT BUILDING TO 7 FT. SNOW SHOWERS. 
.TONIGHT...W WIND 30 KT DIMINISHING TO 20 KT NEAR MORNING. 
SEAS IN ICE FREE WATERS 10 FT. 
.FRI...S WIND 20 KT BECOMING E 30 KT IN THE AFTERNOON. 
SEAS IN ICE FREE WATERS 8 FT. SNOW AND RAIN. 
.FRI NIGHT...NE WIND 35 KT. SEAS IN ICE FREE WATERS 13 FT. 
.SAT...NW WIND 35 KT. SEAS IN ICE FREE WATERS 17 FT. 
.SUN...NE WIND 20 KT. SEAS IN ICE FREE WATERS 6 FT. 
.MON...N WIND 20 KT. SEAS IN ICE FREE WATERS 6 FT.  

$$

543 
FZAK52 PAFC 220031
CWFALU

COASTAL WATERS FORECAST
NATIONAL WEATHER SERVICE ANCHORAGE ALASKA
400 PM AKST THU FEB 21 2013

COASTAL WATERS FORECAST FOR SOUTHWEST ALASKA+BRISTOL BAY+THE
ALASKA PENINSULA WATERS AND THE ALEUTIAN ISLANDS UP TO 100 NM OUT.

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.

PKZ199-221500-
400 PM AKST THU FEB 21 2013
.SYNOPSIS FOR SOUTHWEST ALASKA+BRISTOL BAY+THE ALASKA
PENINSULA WATERS AND THE ALEUTIAN ISLANDS...

A 989 MB NORTH PACIFIC LOW WILL MOVE TO 290 NM SOUTHWEST OF ADAK
WHILE STRENGTHENING TO 965 MB LATE THU NIGHT AND THEN MOVE TO 60 NM
NORTH OF ADAK AT 960 MB FRI AFTERNOON...THEN MOVE TO 30 NM NORTHEAST
OF COLD BAY AT 972 MB BY SAT AFTERNOON. A 987 MB LOW 300 NM NORTH OF
SHEMYA WILL DISSIPATE FRI MORNING.

$$

PKZ150-221500-
COASTAL WATERS SOUTH OF THE ALASKA PENINSULA SITKINAK TO CASTLE
CAPE
400 PM AKST THU FEB 21 2013

...GALE WARNING THROUGH FRIDAY NIGHT...

.TONIGHT...NW WIND 25 KT INCREASING TO 35 KT IN THE EVENING. GUSTS TO
45 KT OUT OF BAYS AND PASSES DEVELOPING DURING THE EVENING. SEAS 16
FT. FREEZING SPRAY NEAR THE COAST.
.FRI...W WIND 35 KT BECOMING SW 25 KT IN THE AFTERNOON. SEAS 16 FT. 
.FRI NIGHT...SE WIND 35 KT BECOMING SW 40 KT BY MIDNIGHT. SEAS 13 FT
BUILDING TO 18 FT BY MIDNIGHT. PATCHY FOG. RAIN AND SNOW. 
.SAT...SW WIND 45 KT. SEAS 20 FT. 
.SAT NIGHT...SW WIND 40 KT. SEAS 18 FT. 
.SUN...W WIND 35 KT. SEAS 19 FT. 
.MON...NE WIND 20 KT. SEAS 11 FT. 
.TUE...NW WIND 20 KT. SEAS 11 FT.  

$$

PKZ155-221500-
COASTAL WATERS SOUTH OF THE ALASKA PENINSULA CASTLE CAPE TO CAPE
SARICHEF
400 PM AKST THU FEB 21 2013

...GALE WARNING THROUGH FRIDAY NIGHT...

.TONIGHT...W WIND 35 KT. SEAS 16 FT. 
.FRI...SW WIND 30 KT BECOMING SE 40 KT IN THE AFTERNOON. SEAS 14 FT.
PATCHY FOG. SNOW AND RAIN. 
.FRI NIGHT...SW WIND 45 KT. SEAS 21 FT. PATCHY FOG. RAIN AND SNOW. 
.SAT...SW WIND 50 KT. SEAS 23 FT. 
.SAT NIGHT...W WIND 45 KT. SEAS 24 FT. 
.SUN...W WIND 35 KT. SEAS 26 FT. 
.MON...N WIND 20 KT. SEAS 14 FT. 
.TUE...NW WIND 20 KT. SEAS 16 FT.  

$$

PKZ160-221500-
BRISTOL BAY WATERS CAPE NEWENHAM TO PORT HEIDEN
400 PM AKST THU FEB 21 2013

...GALE WARNING FRIDAY NIGHT...

.TONIGHT...W WIND 20 KT INCREASING TO 30 KT AFTER MIDNIGHT.  
.FRI...W WIND 20 KT BECOMING SE 15 KT IN THE AFTERNOON. 
.FRI NIGHT...E 30 KT BECOMING S 35 KT AFTER MIDNIGHT. SNOW AND RAIN. 
.SAT...S WIND 25 KT. 
.SAT NIGHT...NW WIND 35 KT. 
.SUN...NW WIND 35 KT. 
.MON...NE WIND 20 KT. 
.TUE...N WIND 20 KT.  

$$

PKZ165-221500-
PORT HEIDEN TO CAPE SARICHEF
400 PM AKST THU FEB 21 2013

...GALE WARNING FRIDAY NIGHT...

.TONIGHT...W WIND 30 KT. SEAS 9 FT. SNOW SHOWERS. 
.FRI...SW WIND 20 KT BECOMING SE 30 KT IN THE AFTERNOON. SEAS 8 FT.
PATCHY FOG. SNOW AND RAIN. 
.FRI NIGHT...SW WIND 35 KT EXCEPT SW 25 KT E OF COLD BAY. SEAS 12 FT.
PATCHY FOG. RAIN AND SNOW. 
.SAT...S WIND 30 KT. SEAS 15 FT. 
.SAT NIGHT...NW WIND 40 KT. SEAS 17 FT. 
.SUN...N WIND 30 KT. SEAS 13 FT. 
.MON...N WIND 25 KT. SEAS 7 FT. 
.TUE...N WIND 20 KT. SEAS 5 FT.  

$$

PKZ180-221500-
SOUTHWEST ALASKA WATERS CAPE NEWENHAM TO DALL POINT
400 PM AKST THU FEB 21 2013

...GALE WARNING FRIDAY NIGHT...

.TONIGHT...NE WIND 15 KT EXCEPT VARIABLE WIND 10 KT S OF NUNIVAK
ISLAND.  
.FRI...NE WIND 15 KT BECOMING NE 25 KT IN THE AFTERNOON.  
.FRI NIGHT...NE WIND 35 KT. 
.SAT...N WIND 30 KT. 
.SAT NIGHT...NW WIND 35 KT. 
.SUN...NW WIND 30 KT. 
.MON AND TUE...N WIND 15 KT. 

$$

PKZ170-221500-
EASTERN ALEUTIANS CAPE SARICHEF TO NIKOLSKI
400 PM AKST THU FEB 21 2013

...STORM WARNING FRIDAY NIGHT...

.TONIGHT...SW WIND 30 KT DIMINISHING TO 20 KT AFTER MIDNIGHT. SEAS 16
FT. PATCHY FOG. 
.FRI...SE WIND 35 KT...EXCEPT BECOMING SW 45 KT W OF DUTCH HARBOR IN
THE AFTERNOON. SEAS 15 FT BERING SIDE...20 FT PACIFIC SIDE. PATCHY
FOG. RAIN AND SNOW. 
.FRI NIGHT...BERING SIDE...SW WIND 35 KT.  PACIFIC SIDE...SW 45 KT
INCREASING TO 55 KT BY MIDNIGHT. SEAS 18 FT BERING SIDE...25 FT
PACIFIC SIDE. PATCHY FOG. SNOW AND RAIN. 
.SAT...W WIND 55 KT. SEAS 27 FT. 
.SAT NIGHT...NW WIND 35 KT. SEAS 27 FT. 
.SUN...E WIND 25 KT. SEAS 19 FT. 
.MON...NW WIND 20 KT. SEAS 17 FT. 
.TUE...E WIND 15 KT. SEAS 18 FT.  

$$

PKZ171-221500-
UNALASKA BAY
400 PM AKST THU FEB 21 2013

...GALE WARNING FRIDAY NIGHT...

.TONIGHT...SW WIND 25 KT DIMINISHING TO 15 KT AFTER MIDNIGHT. SEAS 4
FT SUBSIDING TO 2 FT AFTER MIDNIGHT. PATCHY FOG. SNOW SHOWERS.
.FRI...SE WIND 20 KT BECOMING SW 30 KT IN THE AFTERNOON. SEAS 4 FT.
PATCHY FOG. RAIN AND SNOW. 
.FRI NIGHT...SW WIND 35 KT. SEAS 5 FT. PATCHY FOG. RAIN AND SNOW. 
.SAT...W WIND 30 KT. SEAS 11 FT. 
.SAT NIGHT...NW WIND 30 KT. SEAS 11 FT. 
.SUN...E WIND 20 KT. SEAS 3 FT. 
.MON...N WIND 15 KT. SEAS 5 FT. 
.TUE...VARIABLE WIND LESS THAN 10 KT. SEAS 2 FT.  

$$

PKZ172-221500-
EASTERN ALEUTIANS NIKOLSKI TO ADAK
400 PM AKST THU FEB 21 2013

...HURRICANE FORCE WIND WARNING FRIDAY AND FRIDAY NIGHT...

.TONIGHT...SW WIND 25 KT BECOMING SE 45 KT AFTER MIDNIGHT. E OF
SEGUAM ISLAND...SW WIND 30 KT BECOMING SE 25 KT AFTER MIDNIGHT. SEAS
16 FT. PATCHY FOG. RAIN.
.FRI...BERING SIDE...SE WIND 45 KT BECOMING SW 45 KT IN THE
AFTERNOON. SEAS 12 FT BUILDING TO 18 FT IN THE AFTERNOON. PACIFIC
SIDE...SW WIND 65 KT. SEAS 23 FT BUILDING TO 33 FT IN THE AFTERNOON.
PATCHY FOG. RAIN AND SNOW. 
.FRI NIGHT...BERING SIDE...SW WIND 50 KT BECOMING W 40 KT AFTER
MIDNIGHT. PACIFIC SIDE...SW WIND 65 KT BECOMING W 50 KT AFTER
MIDNIGHT. SEAS 25 FT BERING SIDE...36 FT PACIFIC SIDE. SNOW SHOWERS. 
.SAT...NW WIND 50 KT. SEAS 34 FT. 
.SAT NIGHT...NW WIND 30 KT. SEAS 25 FT. 
.SUN...E WIND 30 KT. SEAS 15 FT. 
.MON...NW WIND 25 KT. SEAS 21 FT. 
.TUE...E WIND 15 KT. SEAS 16 FT.  

$$

PKZ175-221500-
WESTERN ALEUTIANS ADAK TO KISKA
400 PM AKST THU FEB 21 2013

...STORM WARNING THROUGH FRIDAY NIGHT...

.TONIGHT...SE WIND 25 KT INCREASING TO 50 KT AFTER MIDNIGHT. SEAS 12
FT BERING SIDE...19 FT PACIFIC SIDE. PATCHY FOG. RAIN AND SNOW. 
.FRI...BERING SIDE...E 35 KT BECOMING N 35 KT IN THE AFTERNOON...SEAS
SEAS 18 FT BUILDING TO 24 FT IN THE AFTERNOON. PACIFIC SIDE...SW WIND
45 KT BECOMING W 60 KT IN THE AFTERNOON...SEAS 28 FT BUILDING TO
35 FT IN THE AFTERNOON. PATCHY FOG. SNOW AND RAIN. 
.FRI NIGHT...BERING SIDE...NW WIND 40 KT DIMINISHING TO 30 KT AFTER
MIDNIGHT. SEAS 27 FT SUBSIDING TO 21 FT AFTER MIDNIGHT. PACIFIC
SIDE...W WIND 60 KT DIMINISHING TO 45 KT AFTER MIDNIGHT. SEAS 36 FT
SUBSIDING TO 31 FT AFTER MIDNIGHT. SNOW SHOWERS. 
.SAT...NW WIND 35 KT. SEAS 23 FT. 
.SAT NIGHT...N WIND 15 KT. SEAS 14 FT. 
.SUN...NE WIND 30 KT. SEAS 19 FT. 
.MON...SE WIND 20 KT. SEAS 21 FT. 
.TUE...NE WIND 25 KT. SEAS 15 FT.  

$$

PKZ176-221500-
WESTERN ALEUTIANS KISKA TO ATTU
400 PM AKST THU FEB 21 2013

...GALE WARNING THROUGH FRIDAY NIGHT...

.TONIGHT...E WIND 40 KT...EXCEPT VARIABLE 15 KT FROM SHEMYA W. SEAS
12 FT. SNOW AND RAIN. 
.FRI...NE WIND 40 KT BECOMING NW 45 KT IN THE AFTERNOON. FROM SHEMYA
W...NE WIND 20 KT BECOMING N 30 KT IN THE AFTERNOON. BERING SIDE...
SEAS 17 FT. PACIFIC SIDE...SEAS 20 FT BUILDING TO 26 FT IN THE
AFTERNOON. SNOW AND RAIN SHOWERS. 
.FRI NIGHT...BERING SIDE...N WIND 30 KT BECOMING NE 20 KT AFTER
MIDNIGHT. PACIFIC SIDE...NW WIND 40 KT. SEAS 18 FT BERING SIDE...25
FT PACIFIC SIDE. SNOW SHOWERS. 
.SAT...N WIND 30 KT. SEAS 18 FT. 
.SAT NIGHT...S WIND 15 KT. SEAS 14 FT. 
.SUN...NE WIND 25 KT. SEAS 16 FT. 
.MON...E WIND 20 KT. SEAS 14 FT. 
.TUE...NE WIND 20 KT. SEAS 15 FT.  

$$

PKZ185-221500-
ST MATTHEW ISLAND WATERS
400 PM AKST THU FEB 21 2013

...GALE WARNING FRIDAY AND FRIDAY NIGHT...

.TONIGHT...NE WIND 20 KT. 
.FRI...NE WIND 35 KT. 
.FRI NIGHT...NE WIND 35 KT. 
.SAT...N WIND 30 KT. 
.SAT NIGHT...NW WIND 25 KT. 
.SUN...NW WIND 20 KT. 
.MON AND TUE...NE WIND 15 KT. 

$$

PKZ179-221500-
PRIBILOF ISLANDS NEAR-SHORE WATERS
400 PM AKST THU FEB 21 2013

...GALE WARNING FRIDAY AND FRIDAY NIGHT...
...HEAVY FREEZING SPRAY WARNING FRIDAY NIGHT...

.TONIGHT...SW WIND 20 KT. SEAS IN ICE FREE WATERS 9 FT. 
.FRI...SE WIND 20 KT BECOMING E 35 KT IN THE AFTERNOON. SEAS IN ICE
FREE WATERS 9 FT. PATCHY FOG. SNOW.
.FRI NIGHT...E WIND 35 KT. SEAS IN ICE FREE WATERS 13 FT. SNOW. 
HEAVY FREEZING SPRAY. 
.SAT...N WIND 35 KT. SEAS IN ICE FREE WATERS 20 FT. 
.SAT NIGHT...NW WIND 30 KT. SEAS IN ICE FREE WATERS 18 FT. 
.SUN...NE WIND 20 KT. SEAS IN ICE FREE WATERS 7 FT. 
.MON...N WIND 20 KT. SEAS IN ICE FREE WATERS 6 FT. 
.TUE...NE WIND 20 KT. SEAS IN ICE FREE WATERS 8 FT.  

$$

SOUTHCENTRAL AND SOUTHWEST ALASKA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE ANCHORAGE AK
420 PM AKST WED FEB 20 2013

.ANALYSIS AND UPPER LEVELS...
A CLOSED UPPER HIGH REMAINS IN PLACE OVER THE CHUKCHI SEA THIS
AFTERNOON...WITH A LARGE UPPER LOW LOCATED TO ITS SOUTHWEST NEAR THE
SOUTHERN KAMCHATKA PENINSULA AND ZONAL FLOW SPANNING MUCH OF THE
NORTHERN PACIFIC. A PAIR OF UPPER LOWS ARE LOCATED OVER THE GULF OF
ALASKA...WITH ONE LOCATED OVER THE NORTHERN GULF NEAR KODIAK ISLAND
AND THE OTHER MOVING RAPIDLY EASTWARD TOWARD THE PANHANDLE AS IT
TRANSITIONS INTO AN OPEN WAVE. A 979 MB LOW IS PRESENT OVER THE
NORTHERN GULF WITH AN ASSOCIATED FRONT EXTENDING EASTWARD FROM THE
CENTER AS THESE FEATURES CONTINUE TO BRING SNOW SHOWERS TO AREAS
ALONG THE COAST.

.MODEL DISCUSSION...
DESPITE SOME VARIATIONS IN STRENGTH AND TIMING OF SYSTEMS...MODELS
ARE IN REASONABLE AGREEMENT THROUGH THE SHORT TERM WITH RESPECT TO
THE OVERALL SYNOPTIC PATTERN. THE CHUKCHI SEA HIGH/KAMCHATKA LOW WILL
BOTH REMAIN IN PLACE THROUGH LATE THURSDAY NIGHT AS A SERIES OF WAVES
CONTINUE TO MOVE RAPIDLY EASTWARD ACROSS THE NORTHERN PACIFIC. THE
KAMCHATKA LOW WILL THEN BEGIN TO WEAKEN ON FRIDAY AS A STRONG NORTH
PACIFIC LOW RAPIDLY DEVELOPS ALONG ITS EASTERN PERIPHERY AND MOVES
INTO THE WESTERN/CENTRAL ALEUTIANS...BRINGING STRONG WINDS AND
PRECIPITATION TO THOSE AREAS. MEANWHILE...THE CHUKCHI HIGH WILL
RETREAT POLEWARD INTO THE ARCTIC AS A CLOSED UPPER LOW DEVELOPS OVER
NORTHERN ALASKA AND SLIDES SOUTHWESTWARD TOWARD THE BERING STRAIT BY
THE END OF THE WEEK.

.SHORT TERM FORECAST...
SOUTHCENTRAL ALASKA...
SNOW WILL BEGIN TO SPREAD INLAND OVER SOUTHCENTRAL ALASKA TONIGHT AND
PERSIST THROUGH THURSDAY NIGHT AS THE LOW OVER THE NORTHERN GULF
BECOMES NEARLY STATIONARY AND THEN MOVES SLOWLY NORTHWARD TOWARD THE
KENAI PENINSULA. SNOW WILL BEGIN TO TAPER OFF ON FRIDAY MORNING AS
THE LOW WEAKENS...HOWEVER A CHANCE OF PRECIPITATION WILL REMAIN IN
THE FORECAST THROUGH THE WEEKEND AS ANOTHER FRONT MOVES INTO THE
GULF.

SOUTHWEST ALASKA...
SCATTERED SNOW SHOWERS WILL CONTINUE THROUGH THURSDAY AND THEN BEGIN
TO TAPER OFF BY FRIDAY MORNING AS TRANSITORY RIDGING MOVES OVERHEAD.
THE BREAK IN PRECIPITATION WILL BE SHORT LIVED AS A FRONT ASSOCIATED
WITH THE STRONG LOW MOVING OVER THE ALEUTIANS WILL REACH THE AKPEN ON
FRIDAY AND APPROACH THE SOUTHWEST MAINLAND ON FRIDAY NIGHT.

ALEUTIANS/BERING SEA...
PERIODS OF RAIN AND SNOW WILL CONTINUE THROUGH THURSDAY ACROSS THE
ALEUTIANS AS ANOTHER SYSTEM TRAVERSES THE NORTHERN PACIFIC. A
POWERFUL LOW WILL THEN MOVE OVER THE WESTERN AND CENTRAL ALEUTIANS BY
FRIDAY MORNING...BRINGING WIDESPREAD PRECIPITATION AND STRONG WINDS
TO THE SOUTHERN BERING AS THE SYSTEM ADVANCES EASTWARD.

.LONG TERM FORECAST...
AN ACTIVE PATTERN WILL CONTINUE INTO THE EXTENDED TERM AS A LONG WAVE
TROUGH REMAINS IN PLACE OVER THE BERING AND SYSTEMS MOVING ACROSS THE
NORTHERN PACIFIC CONTINUE TO BRING PERIODIC CHANCES OF PRECIPITATION
TO SOUTHERN ALASKA.

.AER/ALU...WATCH/WARNING SUMMARY
PUBLIC...NONE
MARINE...GALE WARNING 130 132 136 137 138 150 155
         HEAVY FREEZING SPRAY 130 140 141
FIRE WEATHER...NONE

CB FEB 13