High Wind Watch 22, NWS Anchorage, AK

525 
WWAK72 PAFC 020306
NPWALU

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE ANCHORAGE AK
706 PM AKDT WED JUN 1 2011

...A STRONG LATE SPRING STORM LOOKS TO BRING HURRICANE
FORCE WINDS THURSDAY TO THE ALASKA PENINSULA...

AKZ181-030300-
/X.UPG.PAFC.HW.A.0022.110602T1600Z-110603T0000Z/
/X.NEW.PAFC.HW.W.0027.110602T1600Z-110603T0300Z/
ALASKA PENINSULA-
INCLUDING THE CITIES OF...COLD BAY...SAND POINT
706 PM AKDT WED JUN 1 2011

...HIGH WIND WARNING IN EFFECT FROM 8 AM TO 7 PM AKDT THURSDAY FOR
CHANNELED TERRAIN...

THE NATIONAL WEATHER SERVICE IN ANCHORAGE HAS ISSUED A HIGH WIND
WARNING...WHICH IS IN EFFECT FROM 8 AM TO 7 PM AKDT THURSDAY. THE
HIGH WIND WATCH IS NO LONGER IN EFFECT. 

AN AREA OF LOW PRESSURE OVER THE NORTH PACIFIC WILL APPROACH THE
EASTERN ALEUTIAN CHAIN THURSDAY MORNING. A STRONG FRONT WILL NEAR
THE WESTERN ALASKA PENINSULA WITH RAIN AND SOUTHEAST WINDS OF 55
TO 65 MPH. THROUGH CHANNELED TERRAIN...EXPECT DAMAGING WIND GUSTS
OF 75 TO 85 MPH. WINDS THEN LOOK TO DIMINISH AS THE FRONT MOVES
OFF TO THE EAST AND THE LOW WEAKENS OVER THE EASTERN BERING
THURSDAY EVENING.

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.

&&

$$


JAM

273 
WWAK72 PAFC 021659
NPWALU

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE ANCHORAGE AK
859 AM AKDT THU JUN 2 2011

...STRONG LATE-SPRING STORM IMPACTING THE ALASKA PENINSULA WITH
HURRICANE FORCE WINDS THROUGH THIS EVENING...

AKZ181-030300-
/X.UPG.PAFC.HW.A.0022.000000T0000Z-110603T0000Z/
/X.NEW.PAFC.HW.W.0027.110602T1659Z-110603T0300Z/
ALASKA PENINSULA-
INCLUDING THE CITIES OF...COLD BAY...SAND POINT
859 AM AKDT THU JUN 2 2011

...HIGH WIND WARNING IN EFFECT UNTIL 7 PM AKDT THIS EVENING
THROUGH CHANNELED TERRAIN...

THE NATIONAL WEATHER SERVICE IN ANCHORAGE HAS ISSUED A HIGH WIND
WARNING...WHICH IS IN EFFECT UNTIL 7 PM AKDT THIS EVENING. THE
HIGH WIND WATCH IS NO LONGER IN EFFECT. 

AN AREA OF LOW PRESSURE OVER THE SOUTHERN BERING SEA WILL MOVE
SLOWLY NORTHWARD THROUGHOUT THE DAY. A STRONG FRONT OVER THE
ALASKA PENINSULA WILL BRING HEAVY RAIN AND SOUTHEAST WINDS OF 50
TO 60 MPH WITH GUSTS TO 80 MPH THROUGH CHANNELED TERRAIN.
CONDITIONS WILL IMPROVE THIS EVENING AS THE LOW IN THE BERING SEA
WEAKENS AND THE ASSOCIATED FRONT WEAKENS AND MOVES TO THE
EAST.

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 AKDT TUE MAY 31 2011

.ANALYSIS AND UPPER LEVELS...
WEATHER PATTERN CURRENTLY BEING DOMINATED BY A LARGE LOW PRESSURE
SYSTEM AND ASSOCIATED WEATHER FRONT IN THE CENTRAL/EASTERN BERING
SEA. THE 975 MB LOW IS NEAR THE PRIBILOF ISLANDS EARLY THIS AFTERNOON
WHILE HIGH PRESSURE BUILDS AHEAD OF THE SYSTEM OVER SOUTHCENTRAL
ALASKA. THE THERMAL TROUGH THAT HAS BEEN SO PREVALENT THE LAST
SEVERAL DAYS NEAR THE ALASKA RANGE HAS RETREATED NORTH NEAR THE YUKON
RIVER VALLEY.

.MODEL DISCUSSION...VERY FEW DIFFERENCES IN THE MODEL SOLUTIONS
TODAY. THE 12Z GFS INITIALIZED BETTER EARLY THIS MORNING ON THE
STRONG SOUTHEASTERLY WINDS ALONG THE FRONTAL BOUNDARY AS WELL AS
DISPLAYING SLIGHTLY BETTER RUN TO RUN CONSISTENCY.

.SHORT TERM FORECAST...LOW STILL DEEPENING OUT WEST AS THE FRONTAL
BOUNDARY APPROACHES THE NORTHWEST GULF COAST. A POTENT SHORTWAVE
EMBEDDED IN THE SOUTHERLY FLOW WILL HELP DEVELOP THE TRIPLE POINT LOW
NEAR KODIAK ISLAND LATER THIS EVENING. DEPENDING ON THE STRENGTH OF
THAT TRIPLE POINT FEATURE...IT COULD PLAY HAVOC WITH THE EXPECTED
WINDS OUT OF TURNAGAIN ARM AND THE KNIK RIVER VALLEY. AT THIS TIME WE
BELIEVE THE UPSTREAM RIDGE AND APPROACHING SYSTEM WILL TIGHTEN THE
GRADIENT...INCREASING THE WINDS THROUGH CHANNELED TERRAIN.
SOUTHEASTERLY WINDS ARE EXPECTED TO INCREASE ACROSS SOUTH AND WEST
ANCHORAGE LATER THIS AFTERNOON.

THESE SAME WINDS ARE ALREADY CAUSING RED FLAG CONDITIONS OVER THE
COPPER RIVER BASIN WHERE DRIER AIR ALOFT MIXED DOWN TO THE SURFACE.
WILL HAVE TO MONITOR THE MATANUSKA VALLEY FOR SIMILAR CONDITIONS BUT
BELIEVE THAT THE INCREASING CLOUDS WILL HELP MITIGATE ANY POTENTIAL
LATER THIS AFTERNOON/EVENING.

SHOWERS WILL CONTINUE TO SPREAD INLAND THIS EVENING AND LAST THROUGH
TOMORROW AFTERNOON. THE DISSIPATING FRONTAL BOUNDARY WILL STALL OVER
THE KENAI PENINSULA THANKS TO HIGH PRESSURE. BY WEDNESDAY
NIGHT...SHOWERS WILL DISSIPATE ACROSS THE REGION AS THE THERMAL
TROUGH STRENGTHENS NEAR THE ALASKA RANGE. RELATIVELY WARM AIR ALOFT
AND STRONG SUBSIDENCE SHOULD BE ENOUGH TO PREVENT THUNDERSTORMS FROM
DEVELOPING THROUGH MID WEEK.

FURTHER WEST...WINDY AND WET CONDITIONS TODAY EVENTUALLY GIVE WAY TO
BUILDING HIGH PRESSURE OVER THE NEXT 48 HOURS. ANOTHER LARGE NORTH
PACIFIC LOW DEVELOPS SOUTH OF THE CHAIN AND SENDS A FRONTAL BOUNDARY
ACROSS THE ALASKA PENINSULA THURSDAY NIGHT INTO FRIDAY...A SIMILAR
SETUP FROM TODAYS WEATHER. THIS LOW SLOWLY WEAKENS AND STAYS NEARLY
STATIONARY OVER THE CENTRAL/EASTERN BERING INTO THE WEEKEND...KEEPING
MOIST SOUTH TO SOUTHWESTERLY FLOW OVER MUCH OF OUR FORECAST AREA OF
RESPONSIBILITY.

.AER/ALU...WATCH/WARNING SUMMARY
PUBLIC...NONE.
MARINE...GALE WARNING...155 170 172 179 180 185 411 412 413 414.
FIRE WEATHER...RED FLAG WARNING 141.

AB MAY 11