Small Craft Advisory 521, NWS Anchorage, AK

Issued

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

Expired

Jul 13, 2010, 4:00 PM AKDT

In force

12 hr

Issued by

NWS Anchorage, AK

200 
FZAK51 PAFC 131143
CWFAER

COASTAL WATERS FORECAST
NATIONAL WEATHER SERVICE ANCHORAGE ALASKA
400 AM AKDT TUE JUL 13 2010

COASTAL WATERS FORECAST FOR THE NORTHERN GULF OF ALASKA COAST
UP TO 100 NM OUT INCLUDING KODIAK ISLAND AND COOK INLET.

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.

PKZ197-140000-
400 AM AKDT TUE JUL 13 2010
.SYNOPSIS FOR THE NORTH GULF COAST+KODIAK ISLAND WATERS+
COOK INLET...
A 1005 MB LOW OVER KODIAK ISLAND MOVES TO 140 NM SOUTHEAST OF
MIDDLETON ISLAND AT 1011 MB WED MORNING AND WEAKENS TO 1020 MB 
NEAR PORT ALEXANDER THU MORNING. A WEATHER FRONT OVER THE NORTHERN
GULF MOVES NORTH AND DISSIPATES ALONG THE GULF COAST THIS AFTERNOON.
$$

PKZ120-140000-
CAPE SUCKLING TO GORE POINT
400 AM AKDT TUE JUL 13 2010

...SMALL CRAFT ADVISORY THROUGH WEDNESDAY...

.TODAY...E WIND 25 KT BECOMING S 20 KT IN THE AFTERNOON. 
SEAS BUILDING TO 7 FT. RAIN AND FOG.
.TONIGHT...SE WIND 20 KT. SEAS 9 FT. AREAS OF FOG. 
.WED...VARIABLE WIND 10 KT. SEAS 9 FT. 
.WED NIGHT...SW WIND 15 KT. SEAS 6 FT. 
.THU...S WIND 15 KT. SEAS 6 FT. 
.FRI...VARIABLE WIND 10 KT. SEAS 5 FT. 
.SAT...SW WIND 15 KT. SEAS 4 FT.  

$$

PKZ121-140000-
RESURRECTION BAY
400 AM AKDT TUE JUL 13 2010

.TODAY...VARIABLE WIND 10 KT OR LESS. SEAS 2 FT. 
HIGHER WINDS AND SEAS S OF CAINES HEAD. RAIN.
.TONIGHT...VARIABLE WIND LESS THAN 10 KT. SEAS 2 FT. 
HIGHER SEAS S OF CAINES HEAD. AREAS OF FOG. 
.WED...VARIABLE WIND LESS THAN 10 KT BECOMING S 15 KT 
IN THE AFTERNOON. SEAS BUILDING TO 3 FT.  
.WED NIGHT AND THU...S WIND 15 KT. SEAS 3 FT. 
.FRI...S WIND 10 KT. SEAS 2 FT. 
.SAT...S WIND 15 KT. SEAS 3 FT.  

$$

PKZ125-140000-
PRINCE WILLIAM SOUND
400 AM AKDT TUE JUL 13 2010

...SMALL CRAFT ADVISORY TODAY...

.TODAY...E WIND 15 KT INCREASING TO 25 KT LATE THIS MORNING. 
SEAS 2 FT BUILDING TO 4 FT. RAIN.
.TONIGHT...E WIND 20 KT DIMINISHING TO 10 KT AFTER MIDNIGHT. 
SEAS 4 FT SUBSIDING TO 2 FT. RAIN SHOWERS AND FOG. 
.WED AND WED NIGHT...VARIABLE WIND 10 KT. SEAS 2 FT. 
.THU...E WIND 15 KT. SEAS 3 FT. 
.FRI AND SAT...S WIND 10 KT. SEAS 2 FT. 

$$

PKZ129-140000-
PASSAGE CANAL
400 AM AKDT TUE JUL 13 2010

.TODAY...E WIND INCREASING TO 15 KT BY LATE MORNING. SEAS 2 FT. RAIN.
.TONIGHT...E WIND 15 KT IN THE EVENING BECOMING VARIABLE LESS THAN
10 KT. SEAS 2 FT. RAIN SHOWERS AND FOG. 
.WED AND WED NIGHT...VARIABLE WIND LESS THAN 10 KT. SEAS 1 FOOT. 
.THU THROUGH SAT...E WIND 10 KT. SEAS 2 FT. 

$$

PKZ130-140000-
BARREN ISLANDS AND KAMISHAK BAY WATERS
400 AM AKDT TUE JUL 13 2010

...SMALL CRAFT ADVISORY THROUGH TONIGHT...

.TODAY...NE WIND 30 KT BECOMING NW 20 KT IN THE AFTERNOON. 
SEAS BUILDING TO 7 FT. RAIN AND FOG.
.TONIGHT...NW WIND 15 KT. SEAS 8 FT. AREAS OF FOG. 
.WED...VARIABLE WIND 10 KT. SEAS 6 FT. 
.WED NIGHT...S WIND 15 KT. SEAS 5 FT. 
.THU...SW WIND 20 KT. SEAS 6 FT. 
.FRI...W WIND 15 KT. SEAS 5 FT. 
.SAT...SW WIND 15 KT. SEAS 4 FT.  

$$

PKZ132-140000-
SHUYAK ISLAND TO SITKINAK
400 AM AKDT TUE JUL 13 2010

...SMALL CRAFT ADVISORY THROUGH TONIGHT...

.TODAY...SW WIND 30 KT. SEAS 12 FT. AREAS OF FOG. RAIN.
.TONIGHT...W WIND 25 KT. SEAS 10 FT. AREAS OF FOG. 
.WED...W WIND 20 KT. SEAS 7 FT. 
.WED NIGHT...SW WIND 20 KT. SEAS 7 FT. 
.THU...SW WIND 25 KT. SEAS 7 FT. 
.FRI...W WIND 20 KT. SEAS 6 FT. 
.SAT...SW WIND 20 KT. SEAS 6 FT.  

$$

PKZ138-140000-
SHELIKOF STRAIT
400 AM AKDT TUE JUL 13 2010

.TODAY...NE WIND 20 KT BECOMING NW 15 KT OR LESS IN THE AFTERNOON.
SEAS 4 FT. RAIN AND FOG.
.TONIGHT THROUGH THU...SW WIND 20 KT. SEAS 5 FT. 
.FRI AND SAT...SW WIND 15 KT. SEAS 4 FT. 

$$

PKZ140-140000-
COOK INLET NORTH OF KAMISHAK BAY AND ENGLISH BAY
400 AM AKDT TUE JUL 13 2010

.TODAY...N WIND 10 KT INCREASING TO 20 KT IN THE AFTERNOON. 
SEAS 2 FT BUILDING TO 4 FT. RAIN.
.TONIGHT...N WIND 20 KT BECOMING VARIABLE 10 KT AFTER MIDNIGHT. 
SEAS 4 FT SUBSIDING TO 2 FT. RAIN SHOWERS. 
.WED...S WIND 10 KT INCREASING TO 20 KT IN THE AFTERNOON. 
SEAS 2 FT BUILDING TO 4 FT. 
.WED NIGHT...S WIND 20 KT. SEAS 5 FT. 
.THU...SW WIND 25 KT. SEAS 6 FT. 
.FRI AND SAT...SW WIND 15 KT. SEAS 4 FT. 

$$

PKZ141-140000-
KACHEMAK BAY
400 AM AKDT TUE JUL 13 2010

.TODAY...VARIABLE WIND 10 KT. SEAS 2 FT. RAIN.
.TONIGHT...W WIND 10 KT IN THE EVENING BECOMING VARIABLE 
LESS THAN 10 KT. SEAS 2 FT. RAIN SHOWERS. 
.WED...S WIND 10 KT INCREASING TO 15 KT IN THE AFTERNOON. 
SEAS 2 FT.
.WED NIGHT...S WIND 15 KT. SEAS 2 FT. 
.THU...SW WIND 20 KT. SEAS 5 FT. 
.FRI AND SAT...SW WIND 15 KT. SEAS 4 FT. 

$$

NWS Anchorage, AK wrote its last area forecast discussion before this small craft advisory went out at Jul 13, 2:00 AM AKDT, 2 hours earlier.

AREA FORECAST DISCUSSION
SOUTHCENTRAL AND SOUTHWEST ALASKA
200 AM AKDT TUE JUL 13 2010

.ANALYSIS AND UPPER LEVELS...
MAIN FEATURE OF INTEREST IS A VERTICALLY STACKED LOW PRESSURE OVER
KODIAK ISLAND THIS MORNING...RIDING THE UPPER LEVEL JET STREAM. THIS
LOW WILL LOSE ITS UPPER LEVEL JET SUPPORT TODAY AND WEAKEN AS IT
MOVES EAST THROUGH THE GULF OF ALASKA. HIGH PRESSURE...STRONGEST AT
UPPER LEVELS...RESIDES OVER THE WESTERN BERING/ALEUTIANS. THIS HIGH
WILL MOVE EAST TO THE CENTRAL BERING/ALEUTIANS WEDNESDAY AS A FRONT
MOVES INTO THE WESTERN ALEUTIANS. A STRONG...COLD UPPER LEVEL LOW
EXISTS OVER THE HIGH ARCTIC AND WILL SEND SEVERAL SHORTWAVES THROUGH
THE SOUTHERN MAINLAND LATER THIS WEEK IN STRONG WESTERLY FLOW.

.MODEL DISCUSSION...
MODELS ARE IN GOOD AGREEMENT OVERALL.

.SHORT TERM FORECAST...
SOUTHCENTRAL...
LOW PRESSURE IS OVER KODIAK ISLAND THIS MORNING WITH A FRONT MOVING
OUT AHEAD OF THE LOW...MAKING LANDFALL ALONG THE NORTH GULF COAST
THIS MORNING AND FALLING APART THIS AFTERNOON. THIS FRONT WILL BRING
A SHOT OF RAIN TO MOST AREAS TODAY...THOUGH NOT EXPECTING ANYTHING
TOO HEAVY OR WINDS THAT STRONG. RAIN WILL GRADUALLY TAPER OFF LATE
TODAY THROUGH WEDNESDAY MORNING AS A WEAK SHORTWAVE RIDGE MOVES IN
FROM THE WEST. HOWEVER...A FAIRLY POTENT SHORTWAVE TROUGH WILL RACE
IN FROM THE NORTHWEST AND CROSS THE ALASKA RANGE WEDNESDAY
NIGHT...BRINGING INCREASED CLOUDCOVER AND A CHANCE OF RAIN WEDNESDAY
NIGHT THROUGH THURSDAY NIGHT.

SOUTHWEST MAINLAND...
THE LOW PRESSURE AROUND KODIAK IS SENDING RAIN OVER THE MOUNTAINS AND
INTO EASTERN BRISTOL BAY...NORTH TO THE ALASKA RANGE EAST OF
SLEETMUTE. THE RAIN WILL TAPER OFF TONIGHT. HOWEVER...A SHORTWAVE
TROUGH WILL MOVE IN FROM THE NORTHWEST LATE WEDNESDAY THROUGH
THURSDAY MORNING...BRINGING A CHANCE OF RAIN OVER THE KUSKOKWIM
DELTA AND VALLEY...BUT BRISTOL BAY SHOULD STAY DRY. WITH THE
WESTERLY FLOW PERSISTING FOR THE NEXT FEW DAYS...WATCH OUT FOR FOG
ESPECIALLY NEAR THE COAST AND ESPECIALLY IN THE MORNING HOURS.

BERING/ALEUTIANS/ALASKA PENINSULA...
HIGH PRESSURE OVER THE WESTERN BERING/ALEUTIANS WILL MOVE TO THE
CENTRAL BERING/ALEUTIANS WEDNESDAY AND REMAIN THERE THROUGH
THURSDAY...WHICH MEANS ABUNDANT LOW CLOUDS AND FOG. A FRONT MOVING
IN FROM THE SOUTHWEST WILL BRING INCREASING RAIN AND WINDS TO THE
WESTERN ALEUTIANS TONIGHT THROUGH THURSDAY AS THE FRONT NEARLY
STALLS OUT.

.LONG TERM FORECAST...
THE CENTRAL BERING/ALEUTIAN HIGH PRESSURE WILL GRADUALLY BREAK DOWN
THROUGH THE WEEKEND...ALLOWING UNSETTLED WEATHER TO RETURN TO THE
ENTIRE REGION. FOR THE MAINLAND...LOOK FOR UNSETTLED WESTERLY FLOW
TO PERSIST THROUGH EARLY NEXT WEEK. MOST OF THE PRECIPITATION FROM
FRIDAY ONWARD WILL BE ALONG AND NORTH OF THE ALASKA RANGE...ALTHOUGH
A BIT OF RAIN COULD SNEAK SOUTH OF THE ALASKA RANGE FROM TIME TO
TIME.

.AER/ALU...WATCH/WARNING SUMMARY
PUBLIC...NONE
MARINE...GALE WARNING ZONE 352
FIRE WEATHER...NONE

FOISY JUL 10

Small Craft Advisories in Alaska, 2010Every small craft advisory in 2010

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