Wind Advisory 36, NWS Fairbanks, AK

000 
WWAK72 PAFG 051333
NPWWCZ

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE FAIRBANKS AK
433 AM AKST SAT DEC 5 2009

AKZ227-060000-
/X.EXB.PAFG.WI.Y.0036.000000T0000Z-091206T1500Z/
UPPER KUSKOKWIM VALLEY-
INCLUDING...MCGRATH...NIKOLAI...TAKOTNA...FAREWELL LAKE
433 AM AKST SAT DEC 5 2009

...WIND ADVISORY IN EFFECT UNTIL 6 AM AKST SUNDAY NEAR THE 
ALASKA RANGE...

THE NATIONAL WEATHER SERVICE IN FAIRBANKS HAS ISSUED A WIND
ADVISORY...WHICH IS IN EFFECT UNTIL 6 AM AKST SUNDAY. 

A STRONG LOW PRESSURE SYSTEM IS MOVING NORTHWEST INTO THE BERING
SEA. THIS COMBINED WITH A STRONG RIDGE OF HIGH PRESSURE TO THE
EAST IS CREATING A STRONG PRESSURE GRADIENT OVER MANY AREAS IN
WESTERN ALASKA.

SOUTHEAST WINDS WILL GUST REACHING 50 MPH NEAR THE ALASKA RANGE. THESE
CONDITIONS WILL THROUGH TONIGHT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WIND ADVISORY FOR THIS REGION MEANS THAT WINDS OF AT LEAST
40 MPH ARE EITHER OCCURRING OR ARE EXPECTED TO OCCUR.

&&

$$

AKZ215-060000-
/X.CON.PAFG.WI.Y.0036.000000T0000Z-091206T0300Z/
LOWER YUKON VALLEY-
INCLUDING...MARSHALL...RUSSIAN MISSION...HOLY CROSS...GRAYLING...
SHAGELUK...ANVIK..FLAT
433 AM AKST SAT DEC 5 2009

...WIND ADVISORY REMAINS IN EFFECT UNTIL 6 PM AKST THIS EVENING...

A WIND ADVISORY REMAINS IN EFFECT UNTIL 6 PM AKST THIS EVENING. 

A STRONG LOW PRESSURE SYSTEM IS MOVING NORTHWEST INTO THE BERING
SEA. THIS COMBINED WITH A STRONG RIDGE OF HIGH PRESSURE TO THE
EAST IS CREATING A STRONG PRESSURE GRADIENT OVER MANY AREAS IN
WESTERN ALASKA.

EAST WINDS WILL INCREASE TONIGHT TO BETWEEN 20 AND 40 MPH WITH
SOME LOCAL GUSTS REACHING 50 MPH. THESE CONDITIONS WILL LIKELY
CONTINUE THROUGH MUCH OF THE DAY ON SATURDAY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WIND ADVISORY FOR THIS REGION MEANS THAT WINDS OF AT LEAST
40 MPH ARE EITHER OCCURRING OR ARE EXPECTED TO OCCUR.

&&

$$
RT DEC 09

000 
WWAK72 PAFG 052316
NPWWCZ

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE FAIRBANKS AK
216 PM AKST SAT DEC 5 2009

AKZ227-060700-
/X.UPG.PAFG.WI.Y.0036.000000T0000Z-091206T1500Z/
/X.NEW.PAFG.HW.W.0013.091205T2316Z-091206T1500Z/
UPPER KUSKOKWIM VALLEY-
INCLUDING...MCGRATH...NIKOLAI...TAKOTNA...FAREWELL LAKE
216 PM AKST SAT DEC 5 2009

...HIGH WIND WARNING IN EFFECT UNTIL 6 AM AKST SUNDAY NEAR THE
ALASKA RANGE...

THE NATIONAL WEATHER SERVICE IN FAIRBANKS HAS ISSUED A HIGH WIND
WARNING...WHICH IS IN EFFECT UNTIL 6 AM AKST SUNDAY. THE WIND
ADVISORY IS NO LONGER IN EFFECT. 

A STRONG LOW PRESSURE SYSTEM IS MOVING NORTHWEST IN THE BERING
SEA. THIS COMBINED WITH VERY STRONG HIGH PRESSURE TO THE EAST IS
CREATING STRONG SOUTH WINDS THROUGH THE ALASKA RANGE INTO THE
UPPER KUSKOKWIM VALLEY. THE STRONGEST WINDS ARE IN ALASKA RANGE
PASSES AND ON THE NORTHWEST SLOPES OF THE MOUNTAINS.

SOUTHEAST WINDS TO 60 MPH WILL BLOW OVER THE ALASKA RANGE. THESE
CONDITIONS WILL LAST THROUGH TONIGHT. THE WIND IS EXPECTED TO
DIMINISH SUNDAY MORNING.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A HIGH WIND WARNING MEANS HAZARDOUS HIGH WINDS ARE EXPECTED. TAKE
PRECAUTIONS TO PROTECT LIFE AND PREVENT PROPERTY DAMAGE. 

&&

$$

AKZ215-060700-
/X.EXT.PAFG.WI.Y.0036.000000T0000Z-091206T0900Z/
LOWER YUKON VALLEY-
INCLUDING...MARSHALL...RUSSIAN MISSION...HOLY CROSS...GRAYLING...
SHAGELUK...ANVIK..FLAT
216 PM AKST SAT DEC 5 2009

...WIND ADVISORY NOW IN EFFECT UNTIL MIDNIGHT AKST TONIGHT...

THE WIND ADVISORY IS NOW IN EFFECT UNTIL MIDNIGHT AKST TONIGHT. 

A STRONG LOW PRESSURE SYSTEM IS MOVING NORTHWEST IN THE BERING
SEA. THIS COMBINED WITH VERY STRONG HIGH PRESSURE TO THE EAST IS
CREATING STRONG SOUTHEAST WINDS OVER THE LOWER YUKON VALLEY. THE
STRONGEST WINDS WILL BLOW OVER THE UPLANDS AND THE NORTHWEST
SLOPES OF HILLS.

IN THESE AREAS...EAST WINDS TO 40 MPH WILL BLOW THROUGH THE
NIGHT. THE WIND IS EXPECTED TO DIMINISH SUNDAY MORNING.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WIND ADVISORY FOR THIS REGION MEANS THAT WINDS OF AT LEAST
40 MPH ARE EITHER OCCURRING OR ARE EXPECTED TO OCCUR.

&&

$$

000 
WWAK72 PAFG 060224 AAA
NPWWCZ

URGENT - WEATHER MESSAGE...UPDATED
NATIONAL WEATHER SERVICE FAIRBANKS AK
524 PM AKST SAT DEC 5 2009

UPDATED ZONE 227 

AKZ227-060900-
/X.CON.PAFG.HW.W.0013.000000T0000Z-091206T1500Z/
UPPER KUSKOKWIM VALLEY-
INCLUDING...MCGRATH...NIKOLAI...TAKOTNA...FAREWELL LAKE
524 PM AKST SAT DEC 5 2009

...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 6 AM AKST SUNDAY
NEAR THE ALASKA RANGE...

A HIGH WIND WARNING REMAINS IN EFFECT UNTIL 6 AM AKST SUNDAY. 

A STRONG LOW PRESSURE SYSTEM IS MOVING NORTHWEST IN THE BERING
SEA. THIS COMBINED WITH VERY STRONG HIGH PRESSURE TO THE EAST IS
CREATING STRONG SOUTH WINDS THROUGH THE ALASKA RANGE INTO THE
UPPER KUSKOKWIM VALLEY. THE STRONGEST WINDS ARE IN ALASKA RANGE
PASSES AND ON THE NORTHWEST SLOPES OF THE MOUNTAINS.

SOUTHEAST WINDS TO 80 MPH WILL BLOW OVER THE ALASKA RANGE. THESE
CONDITIONS WILL LAST THROUGH TONIGHT. THE WIND IS EXPECTED TO
DIMINISH SUNDAY MORNING.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A HIGH WIND WARNING MEANS HAZARDOUS HIGH WINDS ARE EXPECTED. TAKE
PRECAUTIONS TO PROTECT LIFE AND PREVENT PROPERTY DAMAGE.

&&

$$

AKZ215-060900-
/X.CON.PAFG.WI.Y.0036.000000T0000Z-091206T0900Z/
LOWER YUKON VALLEY-
INCLUDING...MARSHALL...RUSSIAN MISSION...HOLY CROSS...GRAYLING...
SHAGELUK...ANVIK..FLAT
524 PM AKST SAT DEC 5 2009

...WIND ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT AKST TONIGHT...

A WIND ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT AKST TONIGHT. 

A STRONG LOW PRESSURE SYSTEM IS MOVING NORTHWEST IN THE BERING
SEA. THIS COMBINED WITH VERY STRONG HIGH PRESSURE TO THE EAST IS
CREATING STRONG SOUTHEAST WINDS OVER THE LOWER YUKON VALLEY. THE
STRONGEST WINDS WILL BLOW OVER THE UPLANDS AND THE NORTHWEST
SLOPES OF HILLS.

IN THESE AREAS...EAST WINDS TO 40 MPH WILL BLOW THROUGH THE
NIGHT. THE WIND IS EXPECTED TO DIMINISH SUNDAY MORNING.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WIND ADVISORY FOR THIS REGION MEANS THAT WINDS OF AT LEAST
40 MPH ARE EITHER OCCURRING OR ARE EXPECTED TO OCCUR.

&&

$$

000 
WWAK72 PAFG 060531
NPWWCZ

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE FAIRBANKS AK
831 PM AKST SAT DEC 5 2009

AKZ215-060645-
/X.CAN.PAFG.WI.Y.0036.000000T0000Z-091206T0900Z/
LOWER YUKON VALLEY-
INCLUDING...MARSHALL...RUSSIAN MISSION...HOLY CROSS...GRAYLING...
SHAGELUK...ANVIK..FLAT
831 PM AKST SAT DEC 5 2009

...WIND ADVISORY IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN FAIRBANKS HAS CANCELLED THE WIND
ADVISORY. 

THE WIND WILL CONTINUE TO GUST TO AROUND 35 MPH IN SPOTS
OVERNIGHT...BUT WIND GUSTS OVER 40 MPH ARE NO LONGER EXPECTED. 

$$

AKZ227-061500-
/X.CON.PAFG.HW.W.0013.000000T0000Z-091206T1500Z/
UPPER KUSKOKWIM VALLEY-
INCLUDING...MCGRATH...NIKOLAI...TAKOTNA...FAREWELL LAKE
831 PM AKST SAT DEC 5 2009

...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 6 AM AKST SUNDAY
NEAR THE ALASKA RANGE...

A HIGH WIND WARNING REMAINS IN EFFECT UNTIL 6 AM AKST SUNDAY. 

A STRONG LOW PRESSURE SYSTEM IS MOVING NORTHWEST IN THE BERING
SEA. THIS COMBINED WITH VERY STRONG HIGH PRESSURE TO THE EAST IS
CREATING STRONG SOUTH WINDS THROUGH THE ALASKA RANGE INTO THE
UPPER KUSKOKWIM VALLEY. THE STRONGEST WINDS ARE IN ALASKA RANGE
PASSES AND ON THE NORTHWEST SLOPES OF THE MOUNTAINS.

SOUTH WINDS 30 TO 45 MPH WITH LOCAL GUSTS TO 80 MPH WILL CONTINUE
OVER THE ALASKA RANGE. THESE CONDITIONS WILL LAST THROUGH TONIGHT.
THE WIND IS EXPECTED TO DIMINISH SUNDAY MORNING.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A HIGH WIND WARNING MEANS HAZARDOUS HIGH WINDS ARE EXPECTED. TAKE
PRECAUTIONS TO PROTECT LIFE AND PREVENT PROPERTY DAMAGE.

&&

$$

NORTHERN ALASKA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE FAIRBANKS AK
417 PM AKST FRI DEC 4 2009

.DISCUSSION...
TWO STRONG LOW PRESSURE SYSTEMS ARE MOVING NORTHWESTWARD AT
AROUND 30 KNOTS INTO THE SOUTH BERING SEA. THE FIRST IS ABOUT 200
MILES NORTHWEST OF ADAK. THE SECOND IS ABOUT 300 MILES SOUTHEAST
OF ADAK. THE CENTRAL PRESSURE OF THE FIRST LOW IS 970 MILLIBARS
AND THAT OF THE SECOND LOW IS 962 MILLIBARS. WITH STRONG HIGH
PRESSURE OF 1042 TO 1046 MILLIBARS OVER THE EASTERN MAINLAND AND
SOUTHEAST ALASKA THIS IS A FINE RECIPE FOR STRONG WINDS...RANGING
FROM 35 TO 60 KNOTS...IN A LONG FETCH FROM THE WEST GULF OF
ALASKA INTO THE EAST BERING SEA.

BLIZZARD CONDITIONS ARE DEVELOPING ON MUCH OF THE BERING SEA COAST
FROM THE YUKON DELTA UP TO BERING STRAIT. AS TEMPERATURES WARM
OVER THE YUKON DELTA...RAIN IS EXPECTED TO BE MIXED WITH THE SNOW
IN THE AFTER NOON. GIVEN THE LONG AND STRONG SOUTHEASTERLY INFLOW
OF MARITIME AIR...THE LARGEST SNOWFALLS WILL BE ON THE SOUTHEAST
SLOPES OF HILLS. THE TURBULENCE IN THE STRONG SOUTHEAST FLOW HAS
THOROUGHLY MIXED THE BOUNDARY LAYER...PREVENTING STRONG MARITIME
FLOW ALOFT OVER A DEEP FROZEN BOUNDARY LAYER. FOR THIS REASON...NO
FREEZING RAIN HAS OCCURRED. THE TRANSITION FROM SNOW TO RAIN IN
THE SOUTHEAST BERING SEA HAS BEEN SHARP AND FAST.

AFTERNOON POLAR ORBITING SATELLITE IMAGERY SHOWS CLEAR SKY OVER
MOST OF THE ARCTIC AND BROOKS RANGE...AND THE NORTHEAST INTERIOR.
ASIDE FROM A LITTLE FOG AT A FEW LOCATIONS...THE ARCTIC HAS
CLEARED OUT. THE REST OF THE REALM LIES UNDER DEEP...SOLID
OVERCAST.

THE TWO STRONG LOWS ARE FORECAST TO CONSOLIDATE OVER THE SOUTH
BERING SEA NEAR 177 DEGREES EAST ON SATURDAY. AS THIS HAPPENS THE
WINDS OVER THE WEST HALF OF THE REALM WILL COME DOWN SOME LATE
SATURDAY AND SATURDAY NIGHT.

THIS WILL NOT BE THE END OF DYNAMIC WEATHER. A STRENGTHENING LOW
NEAR 42 NORTH 175 DEGREES EAST IS FORECAST TO BE APPROACHING THE
CENTRAL ALEUTIANS ON SUNDAY. THE PATH OF THIS SYSTEM WILL BE WEST
OF THAT OF ITS PREDECESSORS AND THE FLOW OVER THE WEST HALF OF
NORTHERN ALASKA WILL BE MORE OFFSHORE THAN IT IS NOW...SO
PRECIPITATION WITH THIS SYSTEM WILL PROBABLY BE LIMITED TO THE
YUKON DELTA AND SAINT LAWRENCE ISLAND.

THE GFS AND EUROPEAN MODELS BOTH FORECAST THE VERY STRONG HIGH
PRESSURE AREA ALOFT TO BUILD UP OVER THE EASTERN MAINLAND THROUGH
WEDNESDAY. FOLLOWING THIS...BOTH MODELS FORECAST AN OUTBREAK OF
COLD ARCTIC FLOW INTO NORTHWEST CANADA AND THE ALASKA MAINLAND
STARTING THURSDAY. THE EUROPEAN MODEL FORECASTS A CONSIDERABLY
COLDER AND MORE EXTENSIVE ARCTIC AIRSTREAM OVER ALASKA THAN DOES
THE GFS MODEL. BY NEXT SATURDAY THE MODEL FORECASTS RAPIDLY
DIVERGE. THE GFS FORECASTS RETURN FLOW STARTING SUNDAY WHILE THE
EUROPEAN MODEL FORECASTS A VERY COLD LOW ALOFT TO SETTLE OVER THE
CENTRAL YUKON TERRITORY.

THE ONLY SIMILARITY IN THE FORECASTS IS THE GREAT STRENGTH OF THE
GFS LOW ALOFT OVER THE EASTERN BERING SEA AND THE EUROPEAN MODEL
LOW ALOFT OVER THE CENTRAL YUKON. THE CENTRAL HEIGHT VALUE IS NEAR
4750 METERS...AN ASTOUNDING DECREASE OF ABOUT 1000 METERS FROM THE
FORECAST HEIGHTS OVER SOUTHEAST INTERIOR THIS WEEKEND TO MONDAY
THE 14TH. THE MEDIUM RANGE MODEL OUTPUT STATISTICS SEEM OUT OF
TOUCH WITH THESE FORECASTS...THE MOS TEMPERATURE FORECASTS FOR
LATE NEXT WEEK ARE ABOVE SEASONAL NORMALS WHEREAS THE CIRCULATION
FORECAST BY THE COMPUTER MODELS SUGGESTS PLENTY OF 30 TO 50 BELOW
WEATHER. IF THE FORECASTS OF CIRCULATION COME CLOSE TO TRUE...THE
MODEL OUTPUT STATISTICS FORECASTS FOR LATE NEXT WEEK WILL BE 40
TO 60 DEGREES OFF.

COASTAL HAZARD POTENTIAL DAYS 3 AND 4...NONE

&&

.AFG WATCHES/WARNINGS/ADVISORIES...
BLIZZARD WARNING FOR AKZ211-AKZ213-AKZ214.

GALE WARNING FOR PKZ200-PKZ210-PKZ220.

BRISK WIND ADVISORY FOR PKZ200-PKZ215-PKZ220-PKZ225.
&&

TF DEC 09