High Wind Watch 17, NWS Anchorage, AK

747 
WWAK71 PAFC 300111
NPWAER

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE ANCHORAGE AK
411 PM AKST THU NOV 29 2012

AKZ131-301415-
/X.UPG.PAFC.HW.A.0017.121130T2100Z-121201T1800Z/
/X.EXB.PAFC.HW.W.0026.121130T1800Z-121201T0900Z/
NORTHEAST PRINCE WILLIAM SOUND-
INCLUDING THE CITIES OF...VALDEZ...THOMPSON PASS
411 PM AKST THU NOV 29 2012

...HIGH WIND WARNING IN EFFECT FROM 9 AM FRIDAY TO MIDNIGHT AKST
FRIDAY NIGHT...

THE NATIONAL WEATHER SERVICE IN ANCHORAGE HAS ISSUED A HIGH WIND
WARNING...WHICH IS IN EFFECT FROM 9 AM FRIDAY TO MIDNIGHT AKST
FRIDAY NIGHT. THE HIGH WIND WATCH IS NO LONGER IN EFFECT. 

* LOCATION...VALDEZ TO THOMPSON PASS.

* WIND...NORTH TO EAST WIND 30 TO 60 MPH WITH GUSTS TO 80 MPH.

* TIMING...WINDS WILL HOLD STEADY OVERNIGHT TONIGHT AND THEN
  INCREASE DURING THE MORNING HOURS ON FRIDAY. THE PEAK WINDS ARE
  EXPECTED LATE FRIDAY MORNING THROUGH LATE FRIDAY EVENING. WINDS
  WILL THEN GRADUALLY DIMINISH FRIDAY NIGHT INTO SATURDAY.

* IMPACTS...TRAVEL MAY BE DIFFICULT. LOOSE DEBRIS CAN BE MOVED 
  AND DAMAGE PROPERTY. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A HIGH WIND WARNING MEANS A HAZARDOUS HIGH WIND EVENT IS EXPECTED
OR OCCURRING. PEOPLE ARE URGED TO SECURE LOOSE OBJECTS THAT COULD
BE BLOWN AROUND OR DAMAGED BY THE WIND.

&&

$$

AKZ111-301415-
/X.EXT.PAFC.HW.W.0026.000000T0000Z-121201T0100Z/
MATANUSKA VALLEY-
INCLUDING THE CITIES OF...PALMER...WASILLA...SUTTON...CHICKALOON
411 PM AKST THU NOV 29 2012

...HIGH WIND WARNING NOW IN EFFECT UNTIL 4 PM AKST FRIDAY...

* LOCATION...MATANUSKA VALLEY WITH THE HIGHEST WINDS THROUGH 
  WASILLA AND PALMER. 

* WIND...NORTHEAST WINDS 25 TO 50 MPH WITH GUSTS TO 60 TO 80 MPH.

* TIMING...HIGH WINDS WILL PERSIST THROUGH FRIDAY AFTERNOON AND
  THEN GRADUALLY DIMINISH FRIDAY NIGHT AND SATURDAY.

* IMPACTS...TRAVEL MAY BE DIFFICULT. TREES MAY BE BLOWN OVER. 
  LOOSE DEBRIS CAN BE MOVED AND DAMAGE PROPERTY. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A HIGH WIND WARNING MEANS A HAZARDOUS HIGH WIND EVENT IS EXPECTED
OR OCCURRING. PEOPLE ARE URGED TO SECURE LOOSE OBJECTS THAT COULD
BE BLOWN AROUND OR DAMAGED BY THE WIND.

&&

$$

AKZ135-301415-
/X.CON.PAFC.HW.W.0026.000000T0000Z-121201T1900Z/
SOUTHEAST PRINCE WILLIAM SOUND-
INCLUDING THE CITY OF...CORDOVA
411 PM AKST THU NOV 29 2012

...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 10 AM AKST SATURDAY
FOR THE COPPER RIVER DELTA...

* LOCATION...COPPER RIVER DELTA.

* WIND...NORTH WIND 65 TO 85 MPH.

* TIMING...WINDS SHOULD DIMINISH BELOW WARNING LEVELS LATE 
  SATURDAY MORNING. 

* IMPACTS...TRAVEL MAY BE DIFFICULT. LOOSE DEBRIS CAN BE MOVED 
  AND DAMAGE PROPERTY. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A HIGH WIND WARNING MEANS A HAZARDOUS HIGH WIND EVENT IS EXPECTED
OR OCCURRING. PEOPLE ARE URGED TO SECURE LOOSE OBJECTS THAT COULD
BE BLOWN AROUND OR DAMAGED BY THE WIND.

&&

$$

SOUTHCENTRAL AND SOUTHWEST ALASKA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE ANCHORAGE AK
200 PM AKST WED NOV 28 2012

.MODEL DISCUSSION...
GUIDANCE IS IN FAIRLY GOOD AGREEMENT TODAY. GENERALLY A PREFERENCE
FOR THE NAM WITH ITS BETTER HANDLING OF THE SMALLER SCALE DETAILS.

.ANALYSIS AND UPPER LEVELS...
THERE IS A LARGE UPPER LEVEL LOW OVER THE NORTHEAST PACIFIC WITH
ANOTHER LOW OVER THE NORTHWEST TERRITORIES OF CANADA. A STRONG RIDGE
ALONG 170 DEGREES WEST LONGITUDE TO 180 LONGITUDE STRETCHES FROM THE
TROPICS TO THE NORTH POLE. AN UPPER LEVEL LOW OVER THE KUSKOKWIM
VALLEY THAT IS SEMI-ATTACHED TO THE NORTHWEST TERRITORIES LOW IS
MOVING SOUTH AND IN THE PROCESS OF BEING "HANDED OFF" TO NORTHEAST
PACIFIC LOW. AN UPPER LEVEL SHORT WAVE OVER NORTHEAST ALASKA IS ALSO
MOVING SOUTHWARD.

.SHORT TERM FORECAST...
THE KUSKOKWIM LOW WILL SLIDE INTO THE WESTERN GULF OF ALASKA BY LATE
TONIGHT. THERE IS VERY LITTLE MOISTURE ASSOCIATED WITH THIS LOW AND
ITS MAIN EFFECT WILL BE TO INCREASE MID LEVEL COLD ADVECTION OVER
SOUTHERN ALASKA AND INCREASE THE SURFACE PRESSURE GRADIENT. THE
NORTHEAST ALASKA SHORT WAVE WILL MOVE INTO SOUTHERN ALASKA THURSDAY
MORNING THEN SLOW CONSIDERABLY OVER SOUTHERN ALASKA AS IT TRIES TO
"PINCH OFF" INTO A CLOSED LOW. THIS WILL BRING SIGNIFICANT MID LEVEL
COLD ADVECTION TO SOUTH CENTRAL ALASKA AND PUSH WINDS UP INTO THE
HIGH WIND CATEGORY OVER THE MATANUSKA VALLEY. BY FRIDAY MORNING THIS
LOW WILL MOVE INTO THE GULF OF ALASKA AND TRANSFER INTO THE GULF
LOW. THIS WILL LEAVE SOUTHERN ALASKA IN BROAD NORTHERLY UPPER LEVEL
FLOW INTO THE WEEKEND.

.LONG TERM FORECAST...
FOR LATER IN THE WEEKEND INTO EARLY NEXT WEEK THE PATTERN WILL
REMAIN BASICALLY THE SAME WITH THE RIDGE AXIS JUST EAST OF 180
DEGREES LONGITUDE. THE SUBTLE DIFFERENCE WILL BE A CARVING OUT OF AN
UPPER LEVEL LOW OVER SOUTHERN ALASKA WHICH WILL THEN MOVE INTO THE
GULF OF ALASKA. BUT THIS WILL INDEED BE SUBTLE FOR PRACTICAL WEATHER
AS GENERALLY DRY AND COLD CONDITIONS WILL CONTINUE FOR MOST OF
SOUTHERN ALASKA.

.AER/ALU...WATCH/WARNING SUMMARY
PUBLIC...HIGH WIND WARNING 111.
MARINE...GALE WARNING 127 128 130 138 140 155 160 180.
FIRE WEATHER...NONE.

LUDWIG NOV 12