Brisk Wind Advisory 186, NWS Fairbanks, AK

NORTHERN ALASKA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE FAIRBANKS AK
248 PM AKST FRI DEC 14 2012

.DISCUSSION...

COLD AMS COVERS NRN ALASKA AND THIS WILL PERSIST THIS WEEKEND.
BASIC WLY FLOW ALOFT ON THE SOUTH SIDE OF THE DEEP COLD LOW NW OF
WRANGEL ISLAND.

AT THE SURFACE...DVLPG LOW MOVG FROM THE GULF OF ANADYR INTO
CHUKOTKA WILL DEEPEN TO 986 MB BY SAT AFTERNOON OVER THE CHUKCHI
SEA. 1002 MB LOW NOW COMING OFF OF KAMCHATKA WILL MOVE TO NEAR ST.
LAWRENCE ISLAND SAT. MEANWHILE...976 MB LOW IN THE ERN GULF OF
ALASKA WILL REDEVELOP OVER THE SRN YUKON SAT. HIGH PRES OVR ERN
BERING SEA DRFTG EAST TO BE OVR CENTRAL INTERIOR BY SAT NIGHT.

THE MID-RANGE GUIDANCE SHOWS CONSIDERABLE SPREAD HANDLING DEEP
COLD LOW NW OF WRANGEL ISLAND AND ASSOCIATED TROF INTO NW ALASKA.
SOME AGREEMENT IN BUILDING A RIDGE OVR THE BERING SEA MID-WEEK
AHEAD OF A DEEP STORM FARTHER WEST...BUT EVOLUTION BEYOND THAT
COMPLETELY UNCERTAIN.

NORTH SLOPE...LOW OVER THE CHUKCHI SEA WILL BRING A PERIOD OF
BRISK SOUTH WINDS TO WRN ZONES. THIS MIGHT BRING A PERIOD OF
ADVISORY WINTER WX...EITHER SNOW/BLOWING OR WIND CHILLS FOR A SHORT
TIME SAT AND WILL HAVE TO BE WATCHED. REMAINING QUITE COLD ERN ZONES.

WEST COAST...SOME MODERATION IN TEMPS AND A PERIOD OF SNOW ALONG
THE COAST WITH THE QUICK MOVING LOWS THIS WEEKEND. STILL COLD
INLAND.

INTERIOR...WE HAVE CONTINUED THE SNOW ADVISORIES FOR ZONES 224 AND
226. TEMPS REMAIN A BIG FORECAST PROBLEM DUE TO THE SHARP CLOUD
LINE...WITH 40S BELOW IN CLEAR VALLEYS AND TEMPS NOT MUCH BELOW
ZERO IN CLOUDY VALLEYS.

COASTAL HAZARD POTENTIAL DAYS 3 AND 4...NONE

&&

.AFG WATCHES/WARNINGS/ADVISORIES...
WINTER WEATHER ADVISORY FOR AKZ224-AKZ226.

BRISK WIND ADVISORY FOR PKZ210-PKZ225-PKZ230.
&&

RT DEC 12