Gale Warning 652, NWS Anchorage, AK

Issued

Sep 13, 2010, 4:00 AM AKDT (12:00 UTC)

Expired

Sep 13, 2010, 4:00 PM AKDT

In force

12 hr

Issued by

NWS Anchorage, AK

772 
FZAK52 PAFC 131144
CWFALU

COASTAL WATERS FORECAST
NATIONAL WEATHER SERVICE ANCHORAGE ALASKA
400 AM AKDT MON SEP 13 2010

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.

PKZ199-140000-
400 AM AKDT MON SEP 13 2010
.SYNOPSIS FOR SOUTHWEST ALASKA+BRISTOL BAY+THE ALASKA
PENINSULA WATERS AND THE ALEUTIAN ISLANDS...

A STRONG FRONT OVER THE EASTERN BERING WILL DISSIPATE LATER TODAY. A
982 MB NORTH PACIFIC LOW MOVES TO 220 NM SOUTH OF AMCHITKA ISLAND BY
WED MORNING.

$$

PKZ150-140000-
COASTAL WATERS SOUTH OF THE ALASKA PENINSULA SITKINAK TO CASTLE
CAPE
400 AM AKDT MON SEP 13 2010

.TODAY...VARIABLE WIND 10 KT. SEAS 3 FT. PATCHY FOG. 
.TONIGHT AND TUE...VARIABLE WIND 10 KT. SEAS 3 FT. PATCHY FOG. 
.TUE NIGHT THROUGH FRI...VARIABLE WIND 10 KT. SEAS 3 FT. 

$$

PKZ155-140000-
COASTAL WATERS SOUTH OF THE ALASKA PENINSULA CASTLE CAPE TO CAPE
SARICHEF
400 AM AKDT MON SEP 13 2010

...SMALL CRAFT ADVISORY THROUGH TUESDAY...

.TODAY...SE WIND 30 KT EXCEPT S 15 KT FROM THE SHUMAGIN ISLANDS E.
SEAS 8 FT. PATCHY FOG. RAIN.
.TONIGHT...SE WIND 25 KT. SEAS 9 FT. PATCHY FOG. 
.TUE...SE WIND 20 KT. SEAS 8 FT. PATCHY FOG. 
.TUE NIGHT...SE WIND 15 KT. SEAS 7 FT. 
.WED...S WIND 20 KT. SEAS 6 FT. 
.THU...SE WIND 20 KT. SEAS 6 FT. 
.FRI...E WIND 20 KT. SEAS 7 FT.  

$$

PKZ160-140000-
BRISTOL BAY WATERS CAPE NEWENHAM TO PORT HEIDEN
400 AM AKDT MON SEP 13 2010

...SMALL CRAFT ADVISORY TODAY...

.TODAY...SE WIND 25 KT. SEAS 6 FT. PATCHY FOG. 
.TONIGHT...SE WIND 20 KT. SEAS 5 FT. PATCHY FOG. 
.TUE...S WIND 20 KT. SEAS 4 FT. AREAS OF FOG. 
.TUE NIGHT...SW WIND 15 KT. SEAS 3 FT. 
.WED...S WIND 15 KT. SEAS 3 FT. 
.THU...SE WIND 15 KT. SEAS 3 FT. 
.FRI...E WIND 10 KT. SEAS 2 FT.  

$$

PKZ165-140000-
PORT HEIDEN TO CAPE SARICHEF
400 AM AKDT MON SEP 13 2010

...SMALL CRAFT ADVISORY THROUGH TONIGHT...

.TODAY...SE WIND 30 KT. SEAS 8 FT. PATCHY FOG. RAIN.
.TONIGHT...SE WIND 25 KT. SEAS 7 FT. PATCHY FOG. 
.TUE...SE WIND 20 KT. SEAS 5 FT. PATCHY FOG. 
.TUE NIGHT...SE WIND 15 KT. SEAS 4 FT. 
.WED AND THU...SE WIND 20 KT. SEAS 5 FT. 
.FRI...E WIND 15 KT. SEAS 4 FT.  

$$

PKZ180-140000-
SOUTHWEST ALASKA WATERS CAPE NEWENHAM TO DALL POINT
400 AM AKDT MON SEP 13 2010

...GALE WARNING TODAY...

.TODAY...SE WIND 35 KT. SEAS 11 FT. PATCHY FOG. RAIN.
.TONIGHT...S WIND 30 KT. SEAS 10 FT. PATCHY FOG. RAIN.
.TUE...S WIND 25 KT. SEAS 8 FT. PATCHY FOG. 
.TUE NIGHT...S WIND 20 KT. SEAS 7 FT. 
.WED AND THU...SE WIND 20 KT. SEAS 5 FT. 
.FRI...SE WIND 15 KT. SEAS 4 FT.  

$$

PKZ170-140000-
EASTERN ALEUTIANS CAPE SARICHEF TO NIKOLSKI
400 AM AKDT MON SEP 13 2010

...GALE WARNING TODAY...

.TODAY...SE WIND 35 KT. SEAS 12 FT. PATCHY FOG. RAIN.
.TONIGHT...N WIND 20 KT EXCEPT SE 30 KT FROM UNALASKA E. SEAS 12 FT.
PATCHY FOG. RAIN.
.TUE...N WIND 15 KT EXCEPT SE 25 KT FROM UNALASKA E. SEAS 11 FT.
PATCHY FOG. RAIN SHOWERS. 
.TUE NIGHT...SE WIND 20 KT. SEAS 9 FT. 
.WED AND THU...SE WIND 25 KT. SEAS 10 FT. 
.FRI...E WIND 25 KT. SEAS 11 FT.  

$$

PKZ171-140000-
UNALASKA BAY
400 AM AKDT MON SEP 13 2010

...SMALL CRAFT ADVISORY TODAY...

.TODAY...SE WIND 25 KT WITH GUSTS TO 35 KT. SEAS 3 FT. PATCHY FOG.
RAIN.
.TONIGHT...SE WIND 15 KT DIMINISHING TO 10 KT AFTER MIDNIGHT. SEAS
2 FT. PATCHY FOG. RAIN.
.TUE...SE WIND 15 KT DIMINISHING TO 10 KT IN THE AFTERNOON. SEAS
2 FT. PATCHY FOG. RAIN SHOWERS. 
.TUE NIGHT...SE WIND 10 KT. SEAS 2 FT. 
.WED AND THU...SE WIND 20 KT. SEAS 3 FT. 
.FRI...E WIND 15 KT. SEAS 2 FT.  

$$

PKZ172-140000-
EASTERN ALEUTIANS NIKOLSKI TO ADAK
400 AM AKDT MON SEP 13 2010

...SMALL CRAFT ADVISORY TODAY...

.TODAY...W WIND 15 KT. SEAS 10 FT. PATCHY FOG. 
.TONIGHT...SW WIND 20 KT. SEAS 7 FT. PATCHY FOG. 
.TUE...SW WIND 20 KT. SEAS 6 FT. PATCHY FOG. 
.TUE NIGHT...SE WIND 25 KT. SEAS 7 FT. 
.WED...SE WIND 35 KT. SEAS 10 FT. 
.THU...SE WIND 25 KT. SEAS 14 FT. 
.FRI...E WIND 25 KT. SEAS 14 FT.  

$$

PKZ175-140000-
WESTERN ALEUTIANS ADAK TO KISKA
400 AM AKDT MON SEP 13 2010

...SMALL CRAFT ADVISORY THROUGH TUESDAY...

.TODAY...SW WIND 25 KT. SEAS 8 FT. PATCHY FOG. 
.TONIGHT...S WIND 25 KT. SEAS 8 FT. PATCHY FOG. 
.TUE...SW WIND 20 KT. SEAS 9 FT. PATCHY FOG. 
.TUE NIGHT...SE WIND 40 KT. SEAS 9 FT. 
.WED...SE WIND 45 KT. SEAS 14 FT. 
.THU...N WIND 25 KT. SEAS 12 FT. 
.FRI...N WIND 15 KT. SEAS 7 FT.  

$$

PKZ176-140000-
WESTERN ALEUTIANS KISKA TO ATTU
400 AM AKDT MON SEP 13 2010

...SMALL CRAFT ADVISORY THROUGH TUESDAY...

.TODAY...SW WIND 25 KT. SEAS 9 FT. PATCHY FOG. 
.TONIGHT...SW WIND 25 KT. SEAS 10 FT. PATCHY FOG. 
.TUE...SW WIND 20 KT. SEAS 9 FT. PATCHY FOG. 
.TUE NIGHT...SE WIND 35 KT. SEAS 9 FT. 
.WED...N WIND 45 KT. SEAS 12 FT. 
.THU...N WIND 25 KT. SEAS 12 FT. 
.FRI...VARIABLE WIND 10 KT. SEAS 6 FT.  

$$

PKZ185-140000-
ST MATTHEW ISLAND WATERS
400 AM AKDT MON SEP 13 2010

...GALE WARNING TODAY...

.TODAY...S WIND 40 KT DIMINISHING TO 30 KT IN THE AFTERNOON. SEAS
17 FT. PATCHY FOG. RAIN.
.TONIGHT...S WIND 20 KT. SEAS 11 FT. PATCHY FOG. 
.TUE...S WIND 20 KT. SEAS 8 FT. PATCHY FOG. 
.TUE NIGHT...S WIND 20 KT. SEAS 7 FT. 
.WED AND THU...SE WIND 20 KT. SEAS 7 FT. 
.FRI...SE WIND 15 KT. SEAS 6 FT.  

$$

PKZ179-140000-
PRIBILOF ISLANDS NEAR-SHORE WATERS
400 AM AKDT MON SEP 13 2010

...SMALL CRAFT ADVISORY THROUGH TONIGHT...

.TODAY...S WIND 30 KT BECOMING W 15 KT IN THE AFTERNOON. SEAS 13 FT.
PATCHY FOG. 
.TONIGHT...VARIABLE WIND 10 KT. SEAS 8 FT. PATCHY FOG. 
.TUE...VARIABLE WIND 10 KT. SEAS 6 FT. PATCHY FOG. 
.TUE NIGHT...VARIABLE WIND 10 KT. SEAS 5 FT. 
.WED AND THU...SE WIND 25 KT. SEAS 7 FT. 
.FRI...E WIND 20 KT. SEAS 6 FT.  

$$

NWS Anchorage, AK wrote its last area forecast discussion before this gale warning went out at Sep 12, 12:05 PM AKDT, 15 hours 55 minutes earlier.

AREA FORECAST DISCUSSION
SOUTHCENTRAL AND SOUTHWEST ALASKA
1205 PM AKDT SUN SEP 12 2010

.ANALYSIS AND UPPER LEVELS...SATELLITE IMAGERY SHOWS A STRONG
LATE SUMMER/EARLY FALL STORM RAPIDLY TRACKING NORTHWARD ACROSS
THE WESTERN BERING SEA THIS MORNING DUE TO A 100+ KT UPPER JET.
DOWNSTREAM RIDGE CONTINUES TO STRENGTHEN OVER MAINLAND ALASKA AND
CONTRIBUTE TO AN ESPECIALLY TIGHT PRESSURE GRADIENT OUT AHEAD OF
THE BERING SYSTEM. THERE IS AN ESTIMATED 400 MILE WIDE SWATH OF
GALE TO STORM FORCE WINDS ACROSS THE CENTRAL BERING AND ALEUTIANS.
SEAS ARE ALSO SIGNIFICANT WITH 18+ FEET AT BUOY 46035. WITH THE
LOW TRACKING NORTHWARD AND STRONG RIDGE TO THE EASTWARD MOVEMENT
OF THE FRONT IS VERY SLOW. MAINLAND ALASKA IS PRIMARILY CLEAR WITH
THE EXCEPTION OF A FEW AREAS OF STRATUS AND FOG...PRIMARILY ALONG
THE COAST.

.MODEL DISCUSSION...MODELS REMAIN IN EXCELLENT AGREEMENT THROUGH
THE NEXT FEW DAYS. THERE HAS BEEN A TREND TOWARD SLOWER PROGRESSION
OF THE BERING SEA FRONT AND TOWARD DISSIPATING THE FRONT FARTHER
WEST. THIS MAKES A LOT OF SENSE CONSIDERING THE STRENGTH OF THE
DOWNSTREAM RIDGE SO FORECASTS WILL BE ADJUSTED ACCORDINGLY.

.SHORT TERM FORECAST...BLOCKING RIDGE WILL MAINTAIN DRY AND (MOSTLY)
CLEAR SKIES ACROSS MAINLAND ALASKA. THE ONE EXCEPTION TO THIS WILL
BE THE PRESENCE OF AREAS OF LOW CLOUDS AND FOG ESPECIALLY ALONG
THE COAST. THE BERING SEA FRONT WILL BE STRETCHED APART ALONG THE
WEST SIDE OF THE RIDGE...DISSIPATING TONIGHT AND MONDAY OVER THE
EASTERN BERING SEA. A STRONG SHORT-WAVE DROPPING OUT OF EASTERN
ASIA WILL THEN TRIGGER DEVELOPMENT OF ANOTHER STRONG PACIFIC SURFACE
LOW WHICH IS EXPECTED TO ARRIVE AT THE WESTERN ALEUTIANS BY MID
WEEK. MODELS INDICATE THAT THIS SYSTEM WILL BECOME CUT-OFF FROM
THE FLOW AND REMAIN SOUTH OF THE ALEUTIANS. THIS WOULD THEN ALLOW
HIGH PRESSURE TO BUILD NORTH AND EAST OF THE SYSTEM OVER MUCH OF
THE BERING SEA.

.LONG TERM FORECAST...CONFIDENCE IN EXTENDED FORECAST IS ABOVE
AVERAGE WITH THE BLOCKING RIDGE EXPECTED TO HOLD OVER MAINLAND
ALASKA THROUGH THE WEEK AND INTO NEXT WEEKEND. CONFIDENCE IS
LOWER OUT WEST WITH DETAILS OF SYSTEM...BUT MODELS SHOW SAME
GENERAL IDEA. THE SYSTEM ALONG THE ALEUTIANS MID WEEK WILL
STALL WEST OF THE RIDGE AND WEAKEN. ANOTHER SYSTEM WILL THEN
DROP OUT OF ASIA AND MOVE TO THE ALEUTIANS SOMETIME NEXT WEEKEND.

.AER/ALU...WATCH/WARNING SUMMARY
PUBLIC...NONE.
MARINE...STORM WARNING 185.
         GALE WARNING...165 170 179 180.
FIRE WEATHER...NONE.

SEB SEP 10

Gale Warnings in Alaska, 2010Every gale warning in 2010

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text.