AREA FORECAST DISCUSSION
NWS SEATTLE WA
AFDSEW 910 AM PST TUE FEB 27 2001
FORECASTS ON TRACK THIS MORNING. SATELLITE IMAGERY SHOWS FRONT
OFFSHORE APPROACHING 140W AT OUR LATITUDE. PARENT LOW ASSOCIATED WITH
THE FRONT MOVING NORTH AND ALREADY INTO THE INTERIOR OF ALASKA. UPPER
AIR PATTERN ALONG THE PACIFIC NORTHWEST COAST CONTINUES TO SPLIT.
WITH THE PARENT LOW SO FAR NORTH AND MOVING NORTH COMBINED WITH THE
SPLIT EXPECT FRONT TO WEAKEN SIGNIFICANTLY BEFORE WHAT IS LEFT OF IT
REACHES THE COAST WED AFTERNOON. IN THE MEANTIME...ACARS SOUNDINGS
SHOW INVERSION ABOUT 2000 FEET DEEP THIS MORNING WITH LIGHT EASTERLY
WINDS UP TO 5000 FEET. 850 MB TEMPS UNCHANGED FROM YESTERDAY
AFTERNOON. WITH LITTLE MIXING TODAY PERSISTENCE A GOOD FORECAST.
INCREASING MID/HI LEVEL MOISTURE ON WEDNESDAY AS REMNANTS OF THE
FRONT APPROACH THE AREA. FIRST LOOK AT 12Z MODELS SHOWS THE NEXT
FRONT DUE IN LATE THURSDAY/EARLY FRIDAY HOLDING TOGETHER AS SPLIT
SHIFTS INLAND. LITTLE CHANGE TO CURRENT PACKAGE. FELTON
KUIL 003 KSEA 001 KOLM 001
.SEW...NONE.
.KATX...VCP31/CSR31...OPERATIONAL.