Brisk Wind Advisory 173, NWS Fairbanks, AK

NORTHERN ALASKA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE FAIRBANKS AK
513 AM AST WED NOV 23 2005

.DISCUSSION...

ALOFT...501 DM LOW PRESSURE CENTERED OVER BETHEL STRETCHES
FROM NORTH OF BARROW TO WELL SOUTH OF COLD BAY IN THE PACIFIC AND
COVERS THE AREA BETWEEN A RIDGE OVER THE WESTERN BERING SEA TO
ANOTHER RIDGE OVER WESTERN CANADA. THE LOW WILL DRIFT A LITTLE
EAST AND BE CENTERED JUST WEST OF ANCHORAGE ON SATURDAY. THE RIDGE
TO THE WEST WILL BE OVER THE EASTERN BERING SEA AND THE RIDGE TO
THE EAST WILL BE TRANSFORMED INTO A CLOSED LOW OVER FAR NORTHERN
CANADA. BY EARLY NEXT WEEK THE RIDGE TO THE WEST MAY MOVE SOUTHEAST AND
BE SOUTH OF THE LOW WHICH WILL FORCE THE LOW NORTHWARD OVER
NORTHERN ALASKA.

SURFACE...LOW PRESSURE OVER THE NORTHERN GULF OF ALASKA WILL MOVE
INLAND OVER PRINCE WILLIAM SOUND THIS MORNING THEN EXIT THE STATE
EAST OF THE ALASKA RANGE THIS AFTERNOON. ANOTHER LOW WILL MOVE
NORTH OVER THE GULF ALONG LONGITUDE 140 WEST TONIGHT AND BE OVER
PRINCE WILLIAM SOUND THURSDAY EVENING THEN EXIT THE STATE EAST OF
THE ALASKA RANGE FRIDAY MORNING. THE LOW WILL MOVE NORTHEAST OF
MACKENZIE BAY FRIDAY NIGHT. A WEAK LOW WILL PERSIST OVER THE
NORTHERN GULF OF ALASKA THROUGH THE WEEK END. WITH THE EXCEPTION
OF THE ARCTIC COAST...MUCH OF NORTHERN ALASKA WILL BE UNDER WEAK
FLOW SATURDAY THROUGH MONDAY.

NORTH SLOPE...A WINTER WEATHER ADVISORY FOR THE NORTHEASTERN BROOK
RANGE SHOULD END BY THIS EVENING. SNOW WILL START OVER MOST THE
AREA EAST OF BARROW TODAY THEN BEGIN TAPERING OFF ON THURSDAY AS
LOW PRESSURE MOVES NORTH OVER CANADA THEN NORTH OF BRISTOL BAY. UP
TO 3 INCHES WILL ACCUMULATE. ON FRIDAY...A SIMILAR LOW MAY
SPREAD A ROUND OF LIGHTER SNOW OVER THE AREA. BY SUNDAY...WINDS
WILL LIGHTEN AND SNOW WILL TAPER TO JUST A FEW FLURRIES.

WEST COAST...NORTH WINDS WILL CAUSE BLOWING SNOW OVER SAINT
LAWRENCE ISLAND AND GALES FROM THE CHUKCHI SEA TO THE
SAINT LAWRENCE ISLAND AREA THROUGH TONIGHT. OTHERWISE...SOME LIGHT
ACCUMULATIONS OF SNOW MAY FALL EAST OF THE NULATO HILLS TODAY AND
TONIGHT AS LOW PRESSURE MOVES NORTHEAST OUT OF THE GULF OF ALASKA.
A LITTLE MORE SNOW MAY FALL ON FRIDAY AS A SIMILAR LOW MOVES OUT
OF THE GULF. NORTH WINDS WILL DIMINISH SATURDAY THEN A PERIOD OF
DRY AND SEASONABLY COLD TEMPERATURES WILL OCCUR THROUGH MONDAY.

INTERIOR...MOIST AIR SPREADING NORTH AND WEST OVER THE INTERIOR
TODAY WILL LOOSE ITS MOISTURE IN THE ARCTIC AIR MASS. THE
RESPONSIBLE LOW PRESSURE WILL MOVE NORTHEAST INTO CANADA THIS
EVENING WITH SNOW ENDING OVER ALL OF THE SOUTHEAST. MAXIMUM
ACCUMULATIONS ARE EXPECTED TO BE JUST BELOW ADVISORY LEVELS. A
SECOND LOW WILL FOLLOW MUCH THE SAME PATH THURSDAY NIGHT AND
FRIDAY...BUT SNOWFALL IS EXPECTED TO BE LIGHTER. BY FRIDAY
EVENING...THE INTERIOR WILL WILL BE UNDER A WEAK PRESSURE PATTERN
WHICH WILL PERSIST INTO EARLY NEXT WEEK.

&&

.AFG WATCHES/WARNINGS/ADVISORIES...
WINTER WEATHER ADVISORY FOR AKZ206.

BLOWING SNOW ADVISORY FOR AKZ213.

HEAVY FREEZING SPRAY WARNING FOR PKZ210-PKZ220-PKZ225.

SMALL CRAFT ADVISORY FOR PKZ225.

GALE WARNING FOR PKZ210-PKZ220.
&&

DA NOV 05