AREA FORECAST DISCUSSION
NWS SEATTLE WA
AFDSEW 315 PM PST THU FEB 15 2001
LATEST RUN OF MESO ETA BRINGS PRECIP N A LITTLE FASTER THAN MM5 AND
OTHER MODELS AND ALSO MODELS SURFACE FEATURES BETTER WITH LOW OFF
VANCOUVER ISLAND AND LITTLE LOW DEVELOPING BY 06Z OFF MOUTH OF
COLUMBIA RIVER. MESOETA ALSO BRINGS SOUTHERLY WIND FLOW AT BOUNDARY
LAYER MORE RAPIDLY NORTHWARD INTO INTERIOR PUGET SOUND OVERNIGHT.
BOUNDARY LAYER MOSTLY N WINDS AND FAIRLY LOW DEWPOINTS AND ACARS
SOUNDINGS AS WELL AS SEA PROFILER SHOW LIGHT N WINDS TO 3000 FEET OR
SO. THUS AT LEAST A MIX OF RAIN/SNOW OVERNIGHT IN W WA EXCEPT FOR
S/CENTRAL COAST WHERE MOSTLY RAIN SHOULD OCCUR. STILL FAVOR COLD AIR
POOLING OVER E SIDE OF OLYMPICS IN KITSAP PENINSULA AND HOOD CANAL
AND THIS SHOULD BE AREA WHERE MORE SNOW ACCUMULATION POTENTIAL
EXISTS. WILL INDICATE WITH A SPECIAL WEATHER STATEMENT POSSIBLE
ACCUMULATIONS OF 1 OR 2 INCHES THERE. WILL INDICATE A SNOW ADVISORY
FOR CASCADES WHERE WEST SLOPES WILL GET UP TO 6 INCHES WHILE MOST
SNOW SHOULD OCCUR ON THE EAST SLOPES.
TROUGH OFFSHORE SPINS WARMER SWLY FLOW ALOFT INTO WA BY SAT HOWEVER
BOUNDARY LYR WINDS E TO NE.
.EXTENDED...MRF KEEPS SOME FORM OF UPPER TROUGH OFFSHORE THROUGH THE
PERIOD. ART
UIL 6988 SEA 7755 OLM 7755
.SEW...GALE WARNING ENTRANCES TO STRAIT JUAN DE FUCA AND CAMANO
ISLAND TO PT ROBERTS.
.SMALL CRAFT ADVISORY COAST AND ADMIRALTY INLET.
.SNOW ADVISORY FOR W SLOPES CASCADES.
.KATX...VCP31/CSR31...OPERATIONAL.