Small Craft Advisory 192, NWS Anchorage, AK

AREA FORECAST DISCUSSION
SOUTHCENTRAL AND SOUTHWEST ALASKA
600 PM AST THU FEB 22 2007

.DISCUSSION...
MODELS ARE IN GOOD AGREEMENT.

UPPER AIR...
THE UPPER LOW NEAR THE MCKENZIE DELTA WILL MOVE INTO THE CENTRAL
BEAUFORT SEA WITH A TROUGH OVER THE YUKON TERRITORY SATURDAY
AFTERNOON. THE UPPER RIDGE OVER THE EASTERN BERING SEA WILL FLATTEN
OVER THE SOUTHWEST INTERIOR TONIGHT AND FRIDAY. ANOTHER UPPER LOW
OVER SIBERIA WILL MOVE INTO NORTON SOUND FRI EVENING THEN WEAKEN
SHORT WAVE TROUGH AS IT MOVE THROUGH THE SOUTHWEST INTERIOR FRIDAY
NIGHT AND SATURDAY.

THE 300 MB NORTHERLY JET OVER THE CENTRAL INTERIOR WILL CONTINUE TO
MOVE EAST AND WEAKEN THROUGH TONIGHT AND SATURDAY.

EAST DOMAIN...
A COLD, DRY AIR MASS WILL REMAIN OVER SOUTHCENTRAL ALASKA THROUGH
SATURDAY. THE PRESSURE GRADIENT ALONG THE GULF COAST WILL EASE UP A
BIT TONIGHT BUT WILL REINTENSIFY FRIDAY AND SATURDAY. GUSTY WINDS
WILL CONTINUE TO BLOW OUT OF CHANNELED TERRAIN ALONG THE CHUGACH
MOUNTAINS AND THE ALASKA RANGE FOR AT LEAST A COUPLE MORE DAYS.

WEST DOMAIN...
A WEAK SURFACE LOW OVER SIBERIA WILL MOVE TO NEAR EMMONAK FRIDAY
EVENING AND WILL DISSIPATE OVER SOUTHWEST ALASKA SATURDAY MORNING.
THE WEATHER FRONT, EXTENDING SOUTH OF THE LOW, WILL MOVE INTO THE
KUSKOKWIM DELTA FRIDAY AND WILL DISSIPATE OVER THE SOUTHWEST INTERIOR
FRIDAY NIGHT. CLOUDS AND SOME LIGHT SNOW IS EXPECTED TO MOVE INTO THE
KUSKOKWIM DELTA FRIDAY MORNING AND WILL SPREAD TO THE REST OF
SOUTHWEST ALASKA FRIDAY NIGHT.

ANOTHER WEAK LOW WEST OF ATTU WILL MOVE ALONG THE SOUTH SIDE OF THE
ALEUTIAN CHAIN AND WILL DISSIPATE SOUTH OF ADAK FRIDAY AFTERNOON.

.AER/ALU...WATCH/WARNING SUMMARY
PUBLIC...NONE.
MARINE...HEAVY FREEZING SPRAY...120 121 125 129 130 138 140 141
                                150 160 165 179 180 185
         GALE...120
FIRE WEATHER...NONE.

NM FEB 07