Small Craft Advisory 1063, NWS Anchorage, AK

AREA FORECAST DISCUSSION
SOUTHCENTRAL AND SOUTHWEST ALASKA
400 PM AST SUN DEC 18 2005

.DISCUSSION...
IT APPEARS THAT MOST OF THE MODELS ARE IN DECENT AGREEMENT WITH THE
EXCEPTION OF THE ETA MODEL. THE ETA MODEL IS MOVING A DEVELOPING LOW
OVER THE EASTERN PACIFIC FASTER THAN THE OTHERS.

CURRENT SATELLITE PICTURES SHOW AREA OF CLEAR SKIES OVER SOUTHEAST
ALASKA MOVING INTO THE EASTERN GULF. MODELS ARE PROJECTING THE
CLEARING TO SPREAD TO THE REST OF THE GULF BY MONDAY AFTERNOON AND
INTO SOUTH CENTRAL ALASKA MONDAY NIGHT.

UPPER AIR...RIDGE OF HIGH PRESSURE OVER BRITISH COLUMBIA WILL MERGE
WITH A RIDGE BUILDING OVER THE WESTERN CONUS MONDAY. ANOTHER RIDGE OF
HIGH PRESSURE ACROSS THE COPPER RIVER BASIN, TANANA VALLEY AND THE
NORTHWEST INTERIOR WILL PERSIST BUT SHIFT INTO THE NORTHERN INTERIOR
BY WEDNESDAY. THE UPPER LOW SOUTH OF THE ALEUTIANS WEAKEN INTO THE
THAT EXTENDS FROM THE CENTRAL ALEUTIANS TO THE PACIFIC NORTHWEST
TONIGHT. THE TROUGH OVER THE EASTERN PACIFIC WILL SHIFT NORTH INTO
THE GULF OF ALASKA WEDNESDAY. THIS PATTERN WILL KEEP THE SOUTHERN
MAINLAND IN A WARMER EAST TO SOUTHEAST FLOW THROUGH WEDNESDAY.

AT THE SURFACE...
MOST OF SOUTHERN ALASKA AND THE BERING SEA WILL REMAIN IN A EAST TO
SOUTHEAST FLOW THROUGH WEDNESDAY. A LOW SOUTH OF THE CENTRAL
ALEUTIANS DISSIPATE INTO A TROUGH MONDAY. ANOTHER MODERATE LOW EAST
OF JAPAN WILL MOVE EAST TO ABOUT 300 NM SOUTH OF THE EASTERN
ALEUTIANS WEDNESDAY.

A LOW DEVELOPING OFF OF THE PACIFIC NORTHWEST MONDAY WILL MOVE INTO
THE WESTERN GULF WEDNESDAY. THE ASSOCIATED FRONT WILL MOVE INTO THE
GULF TUESDAY NIGHT AND MOVE INTO SHORE ALONG THE GULF COAST
WEDNESDAY.

.AER/ALU...WATCH/WARNING SUMMARY
PUBLIC...NONE.
MARINE...SEE MARINE FORECAST.
FIRE WEATHER...NONE.

NM DEC 05