Small Craft Advisory 993, NWS Anchorage, AK

AREA FORECAST DISCUSSION
SOUTHCENTRAL AND SOUTHWEST ALASKA
500 PM ADT THU OCT 27 2006

.DISCUSSION...BASED ON GFS.

.WEST...THE PREDOMINATE WEATHER SYSTEM IS MOVING INTO THE CENTRAL
BERING THIS EVENING. ALTHOUGH CENTRAL PRESSURE IS IN THE VICINITY OF
990 MB...STRONG HIGH PRESSURE OVER ALONG 160W WILL MAKE FOR A TIGHT
PRESSURE GRADIENT.  THIS SYSTEM SHOULD MOVER ONSHORE SATURDAY EVENING
NEAR HOOPER BAY AS 500 MB TROUGH ATTEMPTS TO FORM A CUTOFF LOW.
SUBSEQUENTLY THIS SYSTEM MOVES WESTWARD ON SUNDAY..EVENTUALLY
REACHING MIDDLETON ISLAND MONDAY NIGHT.  COOLER AIR..PROBABLY COOLER
THAN INDICATED IN GFS..MOVING INTO WESTERN AK SUNDAY AS SYSTEM MOVES
WESTWARD. TRACK OF THIS STORM SEEMS REASONABLE. WIDESPREAD RAIN AND
SNOW ACROSS THE SOUTHWEST THIS WEEKEND.

.EAST...LOW IN NORTHERN GULF OF ALASKA WILL CONTINUE TO DISSIPATE AND
MOVER OVER SE SATURDAY. EXCEPTING SUN EAST OF THE ALASKA RANGE
SATURDAY MORNING BUT INCREASING CLOUDS THROUGHOUT THE DAY AS CLOUDS
AND MOISTURE MOVE UP THE WEST SIDE OF THE RIDGE. SNOW SATURDAY NIGHT
OVER COOK INLET POSSIBLY MIXED WITH RAIN ON SUNDAY.

.AER/ALU...WATCH/WARNING SUMMARY
PUBLIC...HIGH WIND WARNING ZONES 187 AND 191.
MARINE...COASTAL FLOOD ADVISORY ZONES 155 AND 161
FIRE WEATHER...NONE.

RMC OCT 06