Winter Weather Advisory 1, NWS Anchorage, AK

SOUTHCENTRAL AND SOUTHWEST ALASKA FORECAST DISCUSSION...CORRECTION
NATIONAL WEATHER SERVICE ANCHORAGE AK
500 PM AKST SUN JAN 1 2012

CORRECTED TYPOS

.MODEL DISCUSSION...
MODELS ARE IN MUCH BETTER AGREEMENT TODAY. THE NAM STILL DOES A
BETTER JOB IN THE FIRST 24 HOURS OVER THE GULF BUT BEYOND THAT POINT
PREFERENCE SWITCHES TO THE GFS.

.ANALYSIS AND UPPER LEVELS...AN UPPER LOW IS STILL POSITIONED OVER
THE SEWARD PENINSULA/NORTON SOUND AREA. AN UPPER TROUGH EXTENDS SOUTH
INTO BRISTOL BAY. ANOTHER TROUGH OVER COOK INLET AND KENAI PENINSULA
HAD WEAKENED OVERNIGHT. A SURFACE LOW 160 MILES SOUTHEAST OF
MIDDLETON ISLAND CONTINUES TO MOVE NORTH TOWARD THE CENTRAL GULF
COAST. AREAS OF SNOW HAVE MOVE ONTO THE COAST EAST OF PRINCE WILLIAM
SOUND THIS MORNING. ANOTHER LOW 60 MILES SOUTH OF CAPE NEWENHAM
CONTINUES TO MOVE EAST INTO BRISTOL BAY. MORE CLOUDS AND AREAS OF
SNOW HAVE MOVED OVER SOUTHWEST ALASKA OVERNIGHT. THE BROAD AREA OF
HIGH PRESSURE OVER NORTHERN ALASKA CONTINUES TO WEAKEN AS THE STRONG
LOW APPROACHES FROM THE SOUTH.

.SHORT TERM FORECAST...
.SOUTHCENTRAL ALASKA...THE LOW IN THE GULF WILL MOVE ONSHORE EAST OF
PRINCE WILLIAM SOUND THIS EVENING AND MOVE INTO THE YUKON TERRITORY
MONDAY MORNING. SNOW WILL TAPER OFF OVERNIGHT TO SCATTERED SNOW
SHOWERS BY MONDAY. MOSTLY CLEAR TO PARTLY CLOUDY SKIES WEST OF THE
TALKEETNA MOUNTAINS WILL SPREAD EAST MONDAY NIGHT AND TUESDAY.
LOCALLY GUSTY WINDS AROUND PRINCE WILLIAM SOUND WILL END LATE TONIGHT
AND EARLY MONDAY MORNING.

.SOUTHWEST ALASKA...THE LOW OVER WESTERN BRISTOL BAY WILL MOVE EAST
AND DISSIPATE AS IT MAKES LANDFALL NEAR EGEGIK THIS EVENING. AREAS OF
SNOW MAINLY ALONG THE BRISTOL BAY COAST WILL BECOME SCATTERED SNOW
SHOWERS THIS EVENING. SKIES WILL BECOME MOSTLY CLEAR. VERY COLD
TEMPERATURES WILL PERSIST THROUGH TUESDAY.

.BERING SEA...A WEAK LOW DEVELOPING OVER THE WESTERN BERING WILL MOVE
INTO THE SOUTHCENTRAL BERING TUESDAY. A DEVELOPING WEATHER FRONT
EXTENDING SOUTH OF THE LOW INTO THE WESTERN ALEUTIANS WILL WILL MOVE
THROUGH ADAK MONDAY NIGHT.

.LONG TERM FORECAST...
THE LONG RANGE MODELS REMAIN IN FAIRLY GOOD AGREEMENT. ANOTHER LARGE
LOW SOUTH OF THE GULF TUESDAY WILL MOVE INTO THE EASTERN GULF TUESDAY
NIGHT THEN INTO NORTHWEST CANADA WEDNESDAY NIGHT AND THURSDAY. THE
LOW OVER THE SOUTHCENTRAL BERING WILL CONTINUE TO MOVE EAST INTO
BRISTOL BAY WEDNESDAY NIGHT THEN DISSIPATE NEAR KING SALMON THURSDAY.

.AER/ALU...WATCH/WARNING SUMMARY
PUBLIC...BLIZZARD WARNING FOR 131 THOMPSON PASS.
         BLIZZARD WARNING FOR 155 COASTAL AREAS
MARINE...GALE WARNINGS...120 121 129 130
         HEAVY FREEZING SPRAY WARNINGS...121 129 130 138 140 141 150
            155 160 165 179 185
FIRE WEATHER...NONE.

NM JAN 12