Wind Advisory 42, NWS Fairbanks, AK

691 
WWAK73 PAFG 222228
NPWAFG

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE FAIRBANKS AK
128 PM AKST FRI NOV 22 2013

AKZ223-230300-
/X.CON.PAFG.WI.Y.0042.000000T0000Z-131123T0300Z/
DELTANA AND TANANA FLATS-
INCLUDING...SALCHA...DELTA JUNCTION...FORT GREELY...
HARDING/BIRCH LAKE...DRY CREEK...DOT LAKE...HEALY LAKE
128 PM AKST FRI NOV 22 2013

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

* LOCATION...NEAR DELTA JUNCTION.

* WINDS...EAST WITH GUSTS UP TO 60 MPH.

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

* TIMING...WINDS WILL DIMINISH LATE THIS AFTERNOON.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WIND ADVISORY MEANS THAT STRONG WINDS ARE OCCURRING OR
EXPECTED. TRAVEL MAY BE DIFFICULT. SECURE LOOSE OBJECTS WHICH MAY
BE BLOWN ABOUT BY THE WIND.

&&

$$

805 
WWAK73 PAFG 230237
NPWAFG

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE FAIRBANKS AK
537 PM AKST FRI NOV 22 2013

AKZ223-230345-
/X.CAN.PAFG.WI.Y.0042.000000T0000Z-131123T0300Z/
DELTANA AND TANANA FLATS-
INCLUDING...SALCHA...DELTA JUNCTION...FORT GREELY...
HARDING/BIRCH LAKE...DRY CREEK...DOT LAKE...HEALY LAKE
537 PM AKST FRI NOV 22 2013

...WIND ADVISORY IS CANCELLED...

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

WINDS ARE NOW DECREASING.

$$

NORTHERN ALASKA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE FAIRBANKS AK
629 AM AKST FRI NOV 22 2013

.DISCUSSION...
IN THE UPPER LEVELS THE SOUTHERN HALF OF THE STATE IS DOMINATED BY
SOUTHERLY FLOW WITH THE UPPER LEVEL LOW LOCATED NEAR BETHEL SEEN
VIA IR SATELLITE IMAGERY. THIS HAS ALLOWED STRONG WINDS CHINOOK
WINDS TO DEVELOP ALONG THE ALASKA RANGE WITH DECENT MOISTURE BEING
PULLED IN FROM THE GULF FOR SOUTH FACING SLOPES OF THE ALASKA
RANGE. THE UPPER LEVEL LOW WILL MEANDER AROUND THE YUKON DELTA
AREA BEFORE FINALLY PUSHING INTO CENTRAL INTERIOR BY SATURDAY
AFTERNOON AND THEN QUICKLY MOVE NORTHEAST ACROSS THE STATE TOWARDS
THE EASTERN BROOKS RANGE BY SUNDAY AFTERNOON.

AT THE SURFACE...AS PREVIOUSLY MENTIONED THE SURFACE LOW SPLITS
WITH ONE MOVING NORTHEAST TOWARDS THE ALCAN BORDER BY SATURDAY
AFTERNOON AND THE SECOND SURFACE LOW OVER THE YUKON DELTA AREA
BROADENING AND WEAKENING TO A LOW PRESSURE TROUGH NEAR NORTON
SOUND. THE GRADIENT BETWEEN THIS LOW AND THE SURFACE HIGH PRESSURE
OVER THE CHUKOTSK PENINSULA WILL ALLOW FOR TIGHTENING PRESSURE
GRADIENT AND STRONGER WINDS ALONG THE BERING AND CHUKCHI SEAS. THE
HIGH PRESSURE OVER THE ARCTIC COAST GETS PUSHED QUICKLY NORTH AND
REPLACED BY A SURFACE OVER THE EASTERN BROOKS RANGE.

MODELS IN GENERAL HAVE REASONABLE AGREEMENT WITH THE BROADER
SYNOPTIC SCALE IN THE SHORT TERM...BUT ON THE FINER DETAILS THERE
ARE STILL SOME INCONSISTENCIES. AS WE MOVE INTO THE MEDIUM AND
LONGER RANGE FORECAST...THE GFS AND ECMWF START TO REALLY DIVERGE.
ESPECIALLY LOOKING AT THE 850 MB TEMPERATURES WHERE THE GFS WANTS
TO BRING COLDER AIR WITH MINUS 16C AND ECMWF MUCH WARMER WITH
MINUS 3C IN THE INTERIOR. CONTINUE TO USE THE WPC APPROACH WITH
USE OF THE ECMWF ENSEMBLE MEAN.

NORTH SLOPE...STRONG WIND WILL DEVELOP ACROSS THE ARCTIC COAST AND
OFFSHORE LATER THIS MORNING AS THE GRADIENT BEGINS TO TIGHTEN
ACROSS THE NORTH SLOPE AND A SURFACE LOW DEVELOPS AS THE SURFACE
HIGH RIDGE GETS PUSHED NORTHWARD. MAIN CONCERN IS WITH THE
BLIZZARD CONDITIONS THAT CAN DEVELOP ALONG THE ARCTIC COAST FROM
DEADHORSE WEST TOWARD BARTER ISLAND. THE ONLY HESITATION IS THAT
THE EAST TO NORTHEAST WINDS DO NOT NECESSARILY FAVOR THE
CONDITIONS THE EXTREME CONDITIONS THAT WAS JUST EXPERIENCED FROM
LAST WEEKS BLIZZARD EVENT. ALSO THE WINDS WILL BE DEVELOPING LATER
THIS MORNING WITH THE SNOW NOT COMING INTO THE AREA UNTIL EARLY
MORNING SATURDAY INTO SATURDAY...WHEN THE PRESSURE GRADIENT
RELAXES SLIGHTLY. THIS DOES NOT MEAN THE WIND GUSTS AND BLOWING
SNOW WILL NOT OCCUR AS THEY WILL INDEED...BUT PERHAPS TO THE NOT
THE BLIZZARD CONDITIONS AS RECENTLY EXPERIENCED. THUS HAVE KEPT
THE BLIZZARD GOING FOR THE ARCTIC COAST WEST OF DEADHORSE...BUT
THIS MAY NEED TO WATCHED TO SEE IF VISIBILITY CRITERIA WILL BE MET
TO THE QUARTER OF A MILE OR LESS.

WEST COAST AND WESTERN INTERIOR...THE TIGHTENING PRESSURE GRADIENT
CONTINUES THROUGH THE DAY TODAY OVER THE BERING STRAIT AS THE
SURFACE LOW DEVELOPS OVER THE YUKON DELTA TODAY. SEVERAL LOCATIONS
HAVE STRONG WIND HEADLINES ALONG THE COAST WHERE GALE FORCE WINDS
ARE ALSO ANTICIPATED OVER THE MARINE ZONE TODAY. WINDS WILL
INCREASE FROM THE BERING STRAIT NORTHWARD. OVERNIGHT WINDS AT
GAMBELL RANGED FROM 45 TO 50 MPH. ALTHOUGH SUOMI VIIR DAY NIGHT
BAND FROM YESTERDAY EVENING INDICATED LARGE ICE GROWTH FROM
KOTZEBUE SOUND NORTHWARD ALONG THE CHUCKCHI SEA...AND EVEN WITH
SOME ICE GROWTH IN NORTON BAY...THERE IS STILL DECENT OPEN WATER
TO ALLOW FOR HIGH SURF ALONG NORTH SHORE OF ST LAWRENCE ISLAND
TODAY. THE WINDS WILL SLOWLY DIMINISH IN THE EVENING AND EXPECT
THE HIGH SURF TO DIMINISH AS WELL WITH THE ADVISORY ENDING AT
MIDNIGHT. SNOW AS WE MOVE INTO THE WESTERN INTERIOR THE WINTER
WEATHER ADVISORIES HAVE BEEN POSTED THROUGH TOMORROW WITH HEAVIEST
SNOW ALONG NULATO HILLS...PARTICULARLY IN THE LOWER KOYUKUK AND
MIDDLE YUKON VALLEYS. SNOW AND BLOWING SNOW IS ALSO SPREADING
ACROSS THE YUKON DELTA AND SEWARD PENINSULA THIS MORNING.

CENTRAL AND EASTERN INTERIOR...WIND CHILL ADVISORIES HAVE BEEN
CANCELLED AS THE WINDS AS WELL AS TEMPERATURES HAVE INCREASED
ACROSS THE AREA FOR BOTH DELTA JUNCTION AND EAGLE. RATHER
INTERESTING VIEWING THE SUOMI NPP VIIRS IR IMAGERY AS WATCHED THE
THE TANANA VALLEY JET START TO INCREASE AND THE ASSOCIATED
TEMPERATURE DIFFERENCES FROM THE VALLEYS AND WARMING OF THE HIGHER
ELEVATIONS. HOWEVER THIS MORNING CAN SEE THE CLOUD COVER MOVED
OVER THE AREA AS SNOW HAS DEVELOPED JUST NORTH AND EAST OF
FAIRBANKS WHERE THE CHINOOK WINDS DO NOT HAVE AN IMPACT AND SNOW
CAN BE ENHANCED DUE TO OROGRAPHICS. HOWEVER...THE WINDS WERE A BIT
STRONGER WINDS THAN ANTICIPATED ACROSS THE DELTA JUNCTION AREA AS
WIND ADVISORY WAS UPGRADED TO HIGH WIND WARNING YESTERDAY EVENING.
OVERNIGHT THERE TWO SEPARATE REPORTS OF TREES BLOWN OVER...ONE OF
WHICH WAS A TREE BLOWN OVER A POWER LINE WITH POWER OUT FROM
PUBLIC SPOTTER AT 1 AM AKST. THE HIGH WIND WARNING IS ONLY
ANTICIPATED THROUGH NOON TODAY WITH THE STRONGEST WINDS...BUT
STILL EXPECT WINDS TO CONTINUE THROUGH FRIDAY EVENING WITH AREAS
OF BLOWING SNOW. FURTHER NORTH...THE WIND ADVISORIES WILL
CONTINUE THROUGH EARLY SATURDAY MORNING. ALTHOUGH THE WINDS AND
BLOWING SNOW CONDITIONS ARE EXPECTED TO DIMINISH AS WINDS DECREASE
THROUGH THE EVENING OVER SUMMIT LOCATIONS...THE EVENT WILL
TRANSITION INTO AN ACCUMULATION OF SNOW WITH LOCATIONS SUCH AS THE
UPPER KOYUKUK VALLEY AND YUKON FLATS AND SURROUNDING UPLANDS
MEETING ADVISORY CRITERIA OF 4 TO 7 INCHES.

COASTAL HAZARD POTENTIAL DAYS 3 AND 4...NONE

&&

.AFG WATCHES/WARNINGS/ADVISORIES...
WIND CHILL ADVISORY FOR AKZ223-AKZ224.

HIGH SURF ADVISORY FOR AKZ213.

HIGH WIND WARNING FOR AKZ223.

BLIZZARD WARNING FOR AKZ203-AKZ204-AKZ225-AKZ226.

WINTER WEATHER ADVISORY FOR AKZ215-AKZ216-AKZ218-AKZ219-AKZ220-
AKZ221-AKZ222.

HEAVY FREEZING SPRAY WARNING FOR PKZ200-PKZ210-PKZ220-PKZ225.

GALE WARNING FOR PKZ200-PKZ210-PKZ235-PKZ240-PKZ245.

SMALL CRAFT ADVISORY FOR PKZ220.

BRISK WIND ADVISORY FOR PKZ215-PKZ225-PKZ230-PKZ235-PKZ240-
PKZ245.
&&

MAK NOV 13