Storm Warning 141, NWS Anchorage, AK

Issued

Sep 18, 2010, 4:00 PM AKDT (00:00 UTC)

Expired

Sep 19, 2010, 4:00 AM AKDT

In force

12 hr

Issued by

NWS Anchorage, AK

276 
FZAK52 PAFC 182313
CWFALU

COASTAL WATERS FORECAST
NATIONAL WEATHER SERVICE ANCHORAGE ALASKA
400 PM AKDT SAT SEP 18 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.

PKZ199-191200-
400 PM AKDT SAT SEP 18 2010
.SYNOPSIS FOR SOUTHWEST ALASKA+BRISTOL BAY+THE ALASKA
PENINSULA WATERS AND THE ALEUTIAN ISLANDS...

A 972 MB LOW 150 NM WEST OF ATTU MOVES OVER KISKA SUNDAY EVENING AT
975 MB AND THEN WEAKENS TO 980 MB MONDAY EVENING 200 NM SOUTHWEST OF
ST GEORGE ISLAND. A WEATHER FRONT MOVES THROUGH THE WESTERN ALEUTIANS
TONIGHT AND INTO THE CENTRAL ALEUTIANS SUNDAY MORNING.

$$

PKZ150-191200-
COASTAL WATERS SOUTH OF THE ALASKA PENINSULA SITKINAK TO CASTLE
CAPE
400 PM AKDT SAT SEP 18 2010

.TONIGHT...SE WIND 20 KT. SEAS 7 FT. PATCHY FOG. 
.SUN...SE WIND 20 KT. SEAS 7 FT. PATCHY FOG. 
.SUN NIGHT...SE WIND 20 KT. SEAS 7 FT. PATCHY FOG. RAIN.
.MON AND MON NIGHT...SE WIND 20 KT. SEAS 7 FT. 
.TUE...E WIND 25 KT. SEAS 6 FT. 
.WED...NE WIND 20 KT. SEAS 7 FT. 
.THU...E WIND 25 KT. SEAS 8 FT.  

$$

PKZ155-191200-
COASTAL WATERS SOUTH OF THE ALASKA PENINSULA CASTLE CAPE TO CAPE
SARICHEF
400 PM AKDT SAT SEP 18 2010

...SMALL CRAFT ADVISORY THROUGH SUNDAY NIGHT...

.TONIGHT...SE WIND 30 KT DIMINISHING TO 20 KT AFTER MIDNIGHT. SEAS 11
FT. PATCHY FOG. RAIN.
.SUN...SE WIND 20 KT. SEAS 9 FT. PATCHY FOG. RAIN.
.SUN NIGHT...SE WIND 20 KT. SEAS 8 FT. PATCHY FOG. 
.MON...S WIND 15 KT. SEAS 7 FT. 
.MON NIGHT...SE WIND 15 KT. SEAS 7 FT. 
.TUE...SW WIND 15 KT. SEAS 11 FT. 
.WED...NW WIND 20 KT. SEAS 11 FT. 
.THU...SE WIND 25 KT. SEAS 10 FT.  

$$

PKZ160-191200-
BRISTOL BAY WATERS CAPE NEWENHAM TO PORT HEIDEN
400 PM AKDT SAT SEP 18 2010

...SMALL CRAFT ADVISORY THROUGH SUNDAY NIGHT...

.TONIGHT...E WIND 25 KT. SEAS 6 FT. 
.SUN AND SUN NIGHT...SE WIND 25 KT. SEAS 6 FT. 
.MON AND MON NIGHT...SE WIND 20 KT. SEAS 5 FT. 
.TUE...E WIND 25 KT. SEAS 6 FT. 
.WED...E WIND 20 KT. SEAS 6 FT. 
.THU...E WIND 25 KT. SEAS 7 FT.  

$$

PKZ165-191200-
PORT HEIDEN TO CAPE SARICHEF
400 PM AKDT SAT SEP 18 2010

...SMALL CRAFT ADVISORY TONIGHT...

.TONIGHT...SE WIND 25 KT. GUSTS TO 40 KT IN THE EVENING OUT OF BAYS
AND PASSES. SEAS 7 FT. PATCHY FOG. 
.SUN THROUGH MON NIGHT...SE WIND 20 KT. SEAS 5 FT. 
.TUE...S WIND 20 KT. SEAS 8 FT. 
.WED...VARIABLE WIND 10 KT. SEAS 8 FT. 
.THU...E WIND 25 KT. SEAS 8 FT.  

$$

PKZ180-191200-
SOUTHWEST ALASKA WATERS CAPE NEWENHAM TO DALL POINT
400 PM AKDT SAT SEP 18 2010

...SMALL CRAFT ADVISORY THROUGH SUNDAY NIGHT...

.TONIGHT...SE WIND 25 KT. SEAS 8 FT. 
.SUN...SE WIND 25 KT. SEAS 7 FT. 
.SUN NIGHT...SE WIND 25 KT. SEAS 7 FT. RAIN.
.MON...SE WIND 20 KT. SEAS 6 FT. 
.MON NIGHT...SE WIND 25 KT. SEAS 7 FT. 
.TUE...E WIND 25 KT. SEAS 7 FT. 
.WED...SE WIND 20 KT. SEAS 6 FT. 
.THU...E WIND 25 KT. SEAS 6 FT.  

$$

PKZ170-191200-
EASTERN ALEUTIANS CAPE SARICHEF TO NIKOLSKI
400 PM AKDT SAT SEP 18 2010

...SMALL CRAFT ADVISORY THROUGH SUNDAY...

.TONIGHT...SE WIND 20 KT. SEAS 9 FT PACIFIC SIDE...4 FT BERING SIDE.
PATCHY FOG. 
.SUN...S WIND 20 KT. SEAS 8 FT PACIFIC SIDE...4 FT BERING SIDE.
PATCHY FOG. 
.SUN NIGHT...S WIND 20 KT. SEAS 7 FT PACIFIC SIDE...4 FT BERING SIDE.
RAIN.
.MON...S WIND 25 KT. SEAS 8 FT. 
.MON NIGHT...S WIND 25 KT. SEAS 11 FT. 
.TUE AND WED...SW WIND 25 KT. SEAS 12 FT. 
.THU...W WIND 30 KT. SEAS 9 FT.  

$$

PKZ171-191200-
UNALASKA BAY
400 PM AKDT SAT SEP 18 2010

.TONIGHT...SE WIND 10 KT. SEAS 2 FT. PATCHY FOG. 
.SUN...SE WIND 15 KT. GUSTS TO 25 KT IN THE AFTERNOON. SEAS 2 FT.
PATCHY FOG. 
.SUN NIGHT...S WIND 15 KT BECOMING SW 10 KT AFTER MIDNIGHT. SEAS
2 FT. RAIN.
.MON AND MON NIGHT...S WIND 20 KT. SEAS 3 FT. 
.TUE AND WED...SW WIND 15 KT. SEAS 2 FT.
.THU...SW WIND 20 KT. SEAS 3 FT.  

$$

PKZ172-191200-
EASTERN ALEUTIANS NIKOLSKI TO ADAK
400 PM AKDT SAT SEP 18 2010

...GALE WARNING SUNDAY NIGHT...

.TONIGHT...SE WIND 10 KT...INCREASING TO 25 KT W OF SEGUAM ISLAND
AFTER MIDNIGHT. SEAS 7 FT. PATCHY FOG. RAIN.
.SUN...SW WIND 30 KT. SEAS 9 FT. PATCHY FOG. RAIN.
.SUN NIGHT...SW WIND 35 KT. SEAS 13 FT. 
.MON...SW WIND 40 KT. SEAS 21 FT. 
.MON NIGHT...SW WIND 30 KT. SEAS 21 FT. 
.TUE...W WIND 30 KT. SEAS 17 FT. 
.WED...SW WIND 30 KT. SEAS 11 FT. 
.THU...W WIND 30 KT. SEAS 12 FT.  

$$

PKZ175-191200-
WESTERN ALEUTIANS ADAK TO KISKA
400 PM AKDT SAT SEP 18 2010

...GALE WARNING THROUGH SUNDAY NIGHT...

.TONIGHT...SE WIND 35 KT BECOMING W AFTER MIDNIGHT. SEAS 8 FT. PATCHY
FOG. RAIN.
.SUN...SW WIND 40 KT. SEAS 12 FT BUILDING TO 17 FT IN THE AFTERNOON.
RAIN SHOWERS. 
.SUN NIGHT...SW WIND 45 KT. BERING SIDE...SEAS 17 FT. PACIFIC SIDE...
SEAS 23 FT BUILDING TO 29 FT AFTER MIDNIGHT. RAIN SHOWERS. 
.MON...W WIND 40 KT. SEAS 26 FT. 
.MON NIGHT...W WIND 30 KT. SEAS 18 FT. 
.TUE...W WIND 30 KT. SEAS 14 FT. 
.WED...SW WIND 30 KT. SEAS 12 FT. 
.THU...W WIND 30 KT. SEAS 15 FT.  

$$

PKZ176-191200-
WESTERN ALEUTIANS KISKA TO ATTU
400 PM AKDT SAT SEP 18 2010

...STORM WARNING SUNDAY...

.TONIGHT...SE WIND 40 KT BECOMING W BY LATE EVENING. SEAS 15 FT.
PATCHY FOG. RAIN.
.SUN...SW WIND 30 KT BERING SIDE...SW 50 KT PACIFIC SIDE. BERING
SIDE... SEAS 20 FT. PACIFIC SIDE...SEAS 22 FT BUILDING TO 28 FT IN
THE AFTERNOON. RAIN SHOWERS. 
.SUN NIGHT...BERING SIDE...NW WIND 35 KT DIMINISHING TO 25 KT AFTER
MIDNIGHT. PACIFIC SIDE...W WIND 45 KT. SEAS 21 FT BERING SIDE...31 FT
PACIFIC SIDE. RAIN SHOWERS. 
.MON...NW WIND 35 KT. SEAS 20 FT. 
.MON NIGHT...W WIND 30 KT. SEAS 14 FT. 
.TUE...SW WIND 30 KT. SEAS 11 FT. 
.WED...SW WIND 30 KT. SEAS 15 FT. 
.THU...W WIND 35 KT. SEAS 17 FT.  

$$

PKZ185-191200-
ST MATTHEW ISLAND WATERS
400 PM AKDT SAT SEP 18 2010

...SMALL CRAFT ADVISORY THROUGH SUNDAY NIGHT...

.TONIGHT...E WIND 30 KT. SEAS 8 FT. PATCHY FOG. RAIN.
.SUN...E WIND 25 KT. SEAS 9 FT. PATCHY FOG. 
.SUN NIGHT...E WIND 25 KT. SEAS 9 FT. PATCHY FOG. RAIN.
.MON...SE WIND 25 KT. SEAS 11 FT. 
.MON NIGHT...E WIND 25 KT. SEAS 13 FT. 
.TUE...E WIND 25 KT. SEAS 10 FT. 
.WED...E WIND 25 KT. SEAS 7 FT. 
.THU...E WIND 30 KT. SEAS 8 FT.  

$$

PKZ179-191200-
PRIBILOF ISLANDS NEAR-SHORE WATERS
400 PM AKDT SAT SEP 18 2010

...SMALL CRAFT ADVISORY SUNDAY AND SUNDAY NIGHT...

.TONIGHT...SE WIND 15 KT. SEAS 7 FT. PATCHY FOG. 
.SUN...SE WIND 25 KT. SEAS 7 FT. PATCHY FOG. 
.SUN NIGHT...SE WIND 25 KT. SEAS 7 FT. PATCHY FOG. RAIN.
.MON...SE WIND 30 KT. SEAS 8 FT. 
.MON NIGHT...SE WIND 30 KT. SEAS 13 FT. 
.TUE...SE WIND 25 KT. SEAS 12 FT. 
.WED...S WIND 20 KT. SEAS 6 FT. 
.THU...E WIND 25 KT. SEAS 7 FT.  

$$

NWS Anchorage, AK wrote its last area forecast discussion before this storm warning went out at Sep 18, 1:00 PM AKDT, 3 hours earlier.

AREA FORECAST DISCUSSION
SOUTHCENTRAL AND SOUTHWEST ALASKA
100 PM AKDT SAT SEP 18 2010

.MODEL DISCUSSION...GFS AND NAM AS WELL AS OLDER ECMWF IN PRETTY GOOD
AGREEMENT ON PRIMARY WEATHER FEATURES.  GFS RUNNING 3 TO 5 MB DEEPER
ON BERING SYSTEMS.

.ANALYSIS AND UPPER LEVELS...NORTHWEST TO SOUTHEAST ORIENTED RIDGE
OVER MAINLAND AND GULF WILL PERSIST.  WIDESPREAD FOG AND STRATUS OVER
NORTHERN GULF SHOULD ALSO CONTINUE. ACTIVE WEATHER IS IN THEIR BERING
SEA.  A WEAKENING LOW SOUTH OF THE EASTERN ALEUTIANS IS ABSORBED INTO
A DEEPER SYSTEM OVER THE WESTERN ALEUTIANS.  A STRONG FRONT OVER THE
WESTERN ALEUTIANS TONIGHT WILL MOVE INTO THE CENTRAL ALEUTIANS SUNDAY
MORNING.

.SHORT TERM FORECAST...MAIN LOW JUST WEST OF ATTU THIS AFTERNOON
SLOWLY MOVES OVER THE NEXT SEVERAL DAYS INTO THE CENTRAL BERING AS IT
WEAKENS.  DUE TO PERSIST RIDGE OVER THE GULF THIS SYSTEM IS PROGED TO
NEVER MOVE EAST OF 170W.  PLENTY OF SOUTHWEST WINDS ASSOCIATED WITH
THIS SYSTEM AS IT MOVES OVER ALEUTIAN CHAIN.

.LONG TERM FORECAST...YET ANOTHER PACIFIC STORM MOVES OVER THE
WESTERN ALEUTIANS LATE TUESDAY NIGHT AND THEN INTO THE CENTRAL BERING
ON FRIDAY...A SIMILAR TRACK AS TO THE PREVIOUS EVENT WITH
CONSIDERABLE WEST WINDS.  UPPER LEVEL RIDGE SHOWS SIGNS OF MOVING
TOWARD THE CHUKCHI SEA LATER IN THE WEEK ALLOWING WEAK SYSTEMS TO
MOVE INTO THE SOUTHERN GULF.

.AER/ALU...WATCH/WARNING SUMMARY
PUBLIC...NONE
MARINE...STORMS 176    GALES 175 172
FIRE WEATHER...NONE

JMP SEP 10

Storm Warnings in Alaska, 2010Every storm 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.