Brisk Wind Advisory 232, NWS Fairbanks, AK

NORTHERN ALASKA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE FAIRBANKS AK
116 PM AKST TUE DEC 30 2014

.DISCUSSION...

UPPER AIR...
RIDGE CURRENTLY EXTENDS FROM AROUND 75N/175E TO THE PANHANDLE AND
SOUTHEASTWARD. IT WILL WEAKEN SUBSTANTIALLY BY WED MORNING AS A
SHORT WAVE TROUGH MOVING UP THE WEST COAST PUNCHES THROUGH THE TOP
OF THE RIDGE. THE SHORT WAVE TROUGH AXIS CURRENTLY EXTENDS FROM
NEAR ST MATTHEW ISLAND EASTWARD TO THE WEST COAST. THE WAVE WILL
MOVE NORTHWARD TO THE CHUKOTSK PENINSULA BY WED MORNING...MORPHING
INTO A WEAK CLOSED LOW CENTER. THIS LOW WILL MOVE TO NORTHWEST
ALASKA BY WED EVENING...THEN DISSIPATE. AN UPPER RIDGE OVER THE
WESTERN BERING SEA WILL BUILD SOME AS IT MOVES EASTWARD TO THE
EASTERN BERING SEA BY WED EVENING. A HIGH CENTER WILL SPLIT OFF
FROM THE RIDGE LATE WED NIGHT WITH THE CENTER OVER THE CHUKOTSK
PENINSULA. THE HIGH CENTER WILL BECOME MORE EXPANSIVE AS THE
CENTER MOVES EASTWARD TO NEAR 73N/155W BY LATE THU NIGHT. STRONG
SOUTHERLY FLOW ACROSS THE ALASKA RANGE WILL DECREASE RAPIDLY
AND BECOME SOUTHWESTERLY LATER TONIGHT. AFTER THE INITIAL RIDGE
WEAKENS...TEMPERATURES ALOFT WILL COOL TO NEAR SEASONAL NORMALS BY
LATE IN THE WEEK. OVER THE WEEKEND...THE HIGH PRESSURE CENTER WILL
DRIFT SLOWLY SOUTHWARD TO BE PREDOMINANT OVER THE NORTHERN ALASKA
MAINLAND THROUGH THE WEEKEND INTO EARLY NEXT WEEK...WITH
TEMPERATURES ALOFT WARMING SLIGHTLY.

SURFACE...
986 MB LOW CENTERED ABOUT 100 MILES WEST OF NUNIVAK ISLAND AT
18Z THIS MORNING WILL MOVE TO NEAR CAPE LISBURNE BY WED
EVENING...FILLING TO AROUND 1012 MB. 1042 MB HIGH CENTERED NEAR
78N/160W WILL DRIFT SOUTHEASTWARD TO THE NORTHERN YUKON
TERRITORY BY LATE THU NIGHT. STRONG CHINOOK WINDS IN THE ALASKA
RANGE ARE EXPECTED TO DECREASE LATER TONIGHT AS THE STRONG FLOW
ALOFT DECREASES AND THE LEESIDE SURFACE TROUGH NORTH OF THE ALASKA
RANGE DISSIPATES. POTENTIAL FOR FREEZING RAIN IN THE WESTERN
INTERIOR WILL END BY LATE TONIGHT AS TEMPERATURES IN THE LOWER
LEVELS COOL TO ENTIRELY BELOW FREEZING. SNOW WILL DEVELOP IN AREAS
OF THE CENTRAL INTERIOR THIS EVENING...SPREADING TO THE NORTHERN
INTERIOR AND PARTS OF THE EASTERN INTERIOR...CENTRAL AND EASTERN
BROOKS RANGE... AND MOST OF THE ARCTIC SLOPE LATER TONIGHT. THE
SNOW WILL TAPER OFF RAPIDLY FROM THE SOUTHWEST WED AFTERNOON AND
EVENING. IN THE FAIRBANKS AREA...LOOKING FOR A CHANCE OF FREEZING
RAIN TONIGHT...BEST CHANCE APPEARS TO BE IN THE EVENING WHEN THERE
IS STILL A SUBSTANTIAL ABOVE FREEZING LAYER....MODEL SOUNDINGS
INDICATING LOWER LEVEL TEMPERATURES WILL ALMOST TOTALLY BELOW
FREEZING BY WED MORNING...COOLING TO WELL BELOW FREEZING WED
NIGHT AND THU.

EASTERLY GALES WITH LOCAL BLIZZARD CONDITIONS EXPECTED TO
EXPAND OVER THE ARCTIC COAST TONIGHT...CONTINUING OVER THE
CENTRAL AND EASTERN PARTS OF THE ARCTIC COAST THROUGH WED.

COASTAL HAZARD POTENTIAL DAYS 3 AND 4...NONE

&&

.AFG WATCHES/WARNINGS/ADVISORIES...
WIND ADVISORY FOR AKZ223.

WINTER STORM WARNING FOR AKZ201-AKZ202-AKZ203-AKZ204-AKZ206-
AKZ215-AKZ216.

HIGH WIND WARNING FOR AKZ225-AKZ226-AKZ227.

GALE WARNING FOR PKZ210-PKZ230-PKZ235-PKZ240-PKZ245.

BRISK WIND ADVISORY FOR PKZ200-PKZ215-PKZ220-PKZ225-PKZ235-
PKZ240-PKZ245.
&&

DEC 14