High Wind Watch 10, NWS Anchorage, AK

059 
WWAK71 PAFC 111248
NPWAER

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE ANCHORAGE AK
448 AM AKDT MON MAR 11 2013

AKZ131-120200-
/X.UPG.PAFC.HW.A.0010.130312T0600Z-130313T1400Z/
/X.NEW.PAFC.HW.W.0009.130312T0200Z-130313T0800Z/
NORTHEAST PRINCE WILLIAM SOUND-
INCLUDING THE CITIES OF...VALDEZ...THOMPSON PASS
448 AM AKDT MON MAR 11 2013

...HIGH WIND WARNING IN EFFECT FROM 6 PM THIS EVENING TO MIDNIGHT
AKDT TUESDAY NIGHT THROUGH THOMPSON PASS...

THE NATIONAL WEATHER SERVICE IN ANCHORAGE HAS ISSUED A HIGH WIND
WARNING...WHICH IS IN EFFECT FROM 6 PM THIS EVENING TO MIDNIGHT
AKDT TUESDAY NIGHT. THE HIGH WIND WATCH IS NO LONGER IN EFFECT. 

* LOCATION...THOMPSON PASS.

* WIND...NORTH WIND 40 TO 60 MPH WITH FREQUENT GUSTS TO 75 MPH.

* VISIBILITY...REDUCED TO ONE MILE OR LESS AT TIMES IN BLOWING SNOW.

* TIMING...STEADILY INCREASING WINDS WILL REACH WARNING LEVEL THIS
  EVENING AND PERSIST THROUGH LATE TUESDAY EVENING BEFORE VERY
  SLOWLY DIMINISHING TOWARD WEDNESDAY 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.

&&

$$

AKZ135-120200-
/X.NEW.PAFC.HW.W.0009.130312T0800Z-130313T0800Z/
SOUTHEAST PRINCE WILLIAM SOUND-
INCLUDING THE CITY OF...CORDOVA
448 AM AKDT MON MAR 11 2013

...HIGH WIND WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO MIDNIGHT
AKDT TUESDAY NIGHT THROUGH THE COPPER RIVER DELTA...

THE NATIONAL WEATHER SERVICE IN ANCHORAGE HAS ISSUED A HIGH WIND
WARNING...WHICH IS IN EFFECT FROM MIDNIGHT TONIGHT TO MIDNIGHT
AKDT TUESDAY NIGHT. 

* LOCATION...THROUGH THE COPPER RIVER DELTA.

* WIND...NORTH WIND 40 TO 60 MPH WITH FREQUENT GUSTS TO 75 MPH.

* TIMING...STEADILY INCREASING WINDS WILL REACH WARNING LEVEL
  OVERNIGHT TONIGHT AND PERSIST THROUGH LATE TUESDAY EVENING.

* IMPACTS...TRAVEL MAY BE DIFFICULT. 

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
500 AM AKDT SUN MAR 10 2013

.MODEL DISCUSSION...
MODELS IN DECENT AGREEMENT IN THE SHORT TERM WITH THE NAM SLIGHTLY
MORE NORTHWEST THAN THE OTHER MODELS WITH THE LOW MOVING INTO THE
GULF TODAY. AS THIS LOW WEAKENS AND IS ABSORBED INTO ANOTHER LOW
SOUTH OF THE GULF THE MODELS START TO STRUGGLE WITH PLACEMENT. THIS
CONTINUES INTO THE EXTENDED FORECAST WHERE THE LONG RANGE MODELS
STRUGGLE WITH PLACEMENT OF THE MAJOR FEATURES.

.ANALYSIS AND UPPER LEVELS...
AN UPPER LEVEL TROUGH IS PUSHING SOUTHEAST ACROSS THE SOUTHWEST PART
OF MAINLAND ALASKA. THE SURFACE LOW AND FRONT ASSOCIATED WITH THIS
FEATURE ARE BRINGING SNOW AND BLOWING SNOW TO AREAS AROUND BRISTOL
BAY. JUST TO THE EAST WEAK RIDGING IS MAKING ITS WAY INTO THE
SOUTHCENTRAL WITH AREAS OF SHOWERY PRECIP OUT AHEAD OF IT. OUT WEST
HIGH PRESSURE IS BUILDING IN OVER THE ALEUTIANS AND BERING SEA. THIS
HIGH PRESSURE IS STALLING OUT A FRONT THAT IS OVER THE WESTERN
ALEUTIANS.

.SHORT TERM FORECAST...
SOUTHCENTRAL...THE WEAK HIGH PRESSURE MOVING INTO THE AREA WILL HAVE
MINIMAL IMPACT AS THE LOW OVER THE SOUTHWEST WILL MAKE ITS WAY INTO
THE SOUTHCENTRAL BY MIDDAY. THIS LOW WILL BRING LIGHT SNOW
ACCUMULATIONS TO MANY AREAS IN THE SOUTHCENTRAL. AS THE LOW MOVES OFF
INTO THE GULF HIGH PRESSURE WILL BUILD IN BEHIND IT. WITH THE HIGH
PRESSURE WILL COME COLDER TEMPERATURES FROM THE NORTH. THE COLDEST
WILL BE IN THE COPPER RIVER BASIN AND THIS THERMAL GRADIENT COMBINED
WITH A MODERATE PRESSURE GRADIENT AND SINKING AIR OVER THE AREA WILL
BRING STRONGER WINDS TO LOCATIONS AROUND EASTERN PRINCE WILLIAM SOUND
MONDAY NIGHT AND INTO TUESDAY.

SOUTHWEST ALASKA AND ALEUTIAN ISLANDS...THE FRONT THAT IS MOVING
THROUGH THE AREA WILL PUSH OFF TO THE SOUTHEAST BY THIS AFTERNOON
WITH A COLDER NORTH WIND FOLLOWING BEHIND. THE RIDGING BUILDING INTO
THE BERING WILL KEEP THE NORTHERLY FLOW FOR THE NEXT SEVERAL DAYS.
SIMILARLY FOR MUCH OF THE ALEUTIANS AND BERING SEA HIGH PRESSURE WILL
DOMINATE FOR SEVERAL DAYS. THE EXCEPTION IS THE WESTERN ALEUTIANS
WHERE THE HIGH PRESSURE IS CAUSING A FRONT TO STALL OUT OVER THE
AREA. WITH THE HIGH PRESSURE BUILDING AND A SERIES OF LOWS TRACKING
OFF TO THE WEST THE WESTERN ALEUTIANS WILL BE UNDER A TIGHT PRESSURE
GRADIENT PRODUCING STRONG SOUTHERLY FLOW WELL INTO TUESDAY.

.LONG TERM FORECAST...
THE AMPLIFIED PATTERN THAT IS SETTING UP WITH THE BUILDING HIGH
PRESSURE OVER THE BERING WILL BREAK DOWN AND BECOME MORE ZONAL AS WE
MOVE LATER INTO THE WEEK. THIS WILL RESULT IN A MORE ACTIVE PATTERN
WITH LOWS TRACKING ACROSS THE REGION FROM WEST TO EAST. IT WILL ALSO
CAUSE THE TEMPERATURES TO BECOME MORE MODERATE FOR THE AREAS IN THE
EAST THAT WILL HAVE SEEN THE COLDER TEMPERATURES MID WEEK.

.AER/ALU...WATCH/WARNING SUMMARY
PUBLIC...NONE
MARINE...GALES...352 130 132 411 412 413 150 172 175 176 185
         HEAVY FREEZING SPRAY...160
FIRE WEATHER...NONE

DK MAR 13

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ANCHORAGE AK
125 PM AKDT SUN MAR 10 2013

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1245 PM     SNOW             5 S ANCHORAGE           61.15N 149.89W
03/10/2013  M2.0 INCH                           AK   NWS EMPLOYEE

1230 PM     SNOW             1 W GLEN ALPS           61.10N 149.72W
03/10/2013  M3.0 INCH                           AK   CO-OP OBSERVER

1205 PM     SNOW             5 SW ANCHORAGE          61.16N 149.98W
03/10/2013  M2.0 INCH                           AK   OFFICIAL NWS OBS

1130 AM     SNOW             1 E EAGLE RIVER         61.32N 149.54W
03/10/2013  M1.5 INCH                           AK   NWS EMPLOYEE

&&

DSTRICKL

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ANCHORAGE AK
249 PM AKDT SUN MAR 10 2013

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0248 PM     SNOW             5 SSE ANCHORAGE         61.15N 149.81W
03/10/2013  M4.5 INCH                           AK   MESONET

            NEAR LORE RD, AND ELMORE RD.

&&

DSTRICKL

PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE ANCHORAGE AK
335 PM AKDT SUN MAR 10 2013

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0245 AM     SNOW             1 W GLEN ALPS           61.10N 149.72W
03/10/2013  M7.0 INCH                           AK   CO-OP OBSERVER

&&

DSTRICKL