High Wind in Washington, November 15 to 16, 2002

NORTHWEST OREGON AND SOUTHWEST WASHINGTON FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PORTLAND OR
830 AM PST FRI NOV 15 2002

.SYNOPSIS...HIGH PRESSURE OVER IDAHO TODAY MOVES EAST TONIGHT.  WARM
FRONT BRUSHES NORTHWEST CORNER OF AREA LATE TODAY AND THIS EVENING
BEFORE MOVING WELL NORTH LATER TONIGHT.  DEVELOPING LOW PRESSURE
MOVES ASHORE INTO SOUTH END OF VANCOUVER ISLAND LATE SATURDAY.
ASSOCIATED COLD FRONT PUSHES ASHORE AROUND MIDDAY SATURDAY AND MOVES
THROUGH THE AREA DURING THE AFTERNOON.  WEST ONSHORE FLOW MOVES OVER
AREA BEHIND COLD FRONT SATURDAY NIGHT.  ONSHORE FLOW WEAKENS SUNDAY
AND BECOMES NORTHWEST AS HIGH PRESSURE BUILDS OVER AREA.

.DISCUSSION...
.SHORT TERM...HIGH PRES OVER IDA CONTROL WEATHER TODAY FORCING MOST
OF WARM FRONT N OF AREA.  WEAK E OFFSHORE FLOW OVER MOST OF AREA WILL
ALLOW FOG/LOW CLOUDS TO PERSIST OVER WILL VALLEY INTO AFTERNOON AT
LEAST.  WILL BRUSH A CHANCE OF RAIN N COAT AND SW THIS AFTERNOON AND
THIS EVE AS WARM FRONT MOVES BY.  ETA/GFS DIVERGE ON STRENGTH OF
SYSTEM FOR SAT.  WATER VAPOR SHOW INITIAL SHORT WAVE WITH GOOD DRY
SLOT NEAR 140W.  THIS SYSTEM LOOKS TO BE STRETCHING OUT WITH NEXT
STRONG SHORT WAVE TURNING AT BASE OF TROUGH CROSSING 150W AT 35N.
THIS FAVORS STRONGER DEVELOPMENT OF SECONDARY WAVE AS AVN SUGGESTS
WITH INITIAL LOW MOVING TO QUEEN CHARLOTTES TONIGHT.  STRONG S
GRADIENT AHEAD OF COLD FRONT WITH WAVE/LOW MOVING TO SRN BC BY LATE
SAT.  HW WATCH LOOKS GOOD TO GO WARNING THIS AFTERNOON.  FRONT MOVES
ASHORE AROUND MIDDAY SAT AND ACROSS AREA DURING THE AFTERNOON.  SHARP
TROUGH WITH FRONT TURNS S TO SE FLOW AHEAD OF FRONT TO FAIRLY STRONG
WSW FLOW BEHIND FRONT WILL NEED TO BEEF UP WINDS INTERIOR THOUGH NO
HW FOR NOW.  ONSHORE FLOW BEHIND FRONT SAT EVE FORCES SOME HEAVIER
SHOWERS AGAINST CASCADES.  WITH SNOW LEVELS LOWERING A LITTLE MORE
SNOW SOME PROBLEM BUT NOT LONG ENOUGH DURATION FOR MAJOR
ACCUMULATION.  WEAK TROUGH MOVES OVER AREA SUN MORNING CONTINUING A
FEW SHOWERS ESPECIALLY MOUNTAINS AND NRN COAST.  AS TROUGH MOVES
THROUGH HIGH PRES BUILDS DECREASING SHOWERS .

.LONG TERM...NO CHANGES.  KOSOVITZ

AST 33984  PDX 11993  SLE 11993  EUG 00883

.PQR...HIGH WIND WATCH COASTAL ZONES LATE TONIGHT AND SAT.
       GALE WARNING CAPE SHOALWATER TO FLORENCE.

ORZ001>013-WAZ019>023-039-040-161430-

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE PORTLAND OREGON
630 AM PST FRI NOV 15 2002

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHWEST WASHINGTON AND
NORTHWEST OREGON.

.DAY ONE...

A DENSE FOG ADVISORY IS IN EFFECT FOR THE CENTRAL AND SOUTHERN
WILLAMETTE VALLEY...THE GREATER PORTLAND METRO AREA...AND THE GREATER
VANCOUVER AREA THIS MORNING. WIDESPREAD FOG WITH VISIBILITIES 1/4
MILE OR LESS ARE EXPECTED THIS MORNING.

A GALE WARNING IS IN EFFECT FOR COASTAL WATERS TODAY.

A HIGH WIND WATCH IS IN EFFECT FOR LATE TONIGHT FOR THE NORTH AND
CENTRAL OREGON COAST AND THE SOUTHERN WASHINGTON COAST. A COLD FRONT
MOVING INTO THE PACIFIC NORTHWEST SATURDAY MAY BRING VERY WINDY
CONDITIONS TO THE COAST TONIGHT.

.INSTRUCTIONS TO SPOTTERS...

SPOTTER REPORTS OF HIGH WINDS ARE ENCOURAGED TONIGHT.

.DAYS TWO THROUGH SEVEN...

A SERIES OF PACIFIC WEATHER SYSTEMS ARE FORECAST TO AFFECT NORTHWEST
OREGON AND SOUTHWEST WASHINGTON THROUGH WEDNESDAY. THESE WEATHER
SYSTEMS MAY BRING VERY WINDY CONDITIONS TO THE COAST AT TIMES. PLEASE
REFER TO THE HIGH WIND WATCH (NPWPQR) FOR HIGH WINDS ALONG THE COAST
SATURDAY.