802 
FXUS66 KPQR 240406
AFDPQR

NORTHWEST OREGON AND SOUTHWEST WASHINGTON FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PORTLAND OR
900 PM PDT TUE MAY 23 2000

IN THE NEAR TERM...MODELS GENERALLY CONTINUE A ZONAL FLOW EMBEDDED
WITH WEAK SHORT WAVES.  A SHORT WAVE SEEN IN WATER VAPOR IMAGERY
APPROACHING 135W IS FORECAST TO MOVE ACROSS REGION EARLY WED.  A
MOIST STABLE AIRMASS WITH ONSHORE FLOW BELOW 700 MB EXTENDING E-W
ACROSS NORTHERN OREGON KEPT PLENTLY OF CLOUDS IN DURING THE DAY TODAY
...ESP OVER THE MOUNTAINS WITH SOME LIGHT RAIN REPORTED IN THE HIGHER
COAST RANGE.  00Z SLE SOUNDING INDICATES RIDGING AHEAD OF THE SHORT
WAVE THIS AFTERNOON HAS PUSHED THE SUBSIDENCE INVERSION DOWN TO NEAR
800 MB...AND WITH MODELS FORECASTING A WEAKENING ONSHORE FLOW BETWEEN
850 AND 700 MB EXPECT SOME DECREASE IN THE CLOUDINESS OVER MOUNTAINS
BY WED.  IN LOWER ELEVATIONS THOUGH...ONSHORE FLOW REMAINS SO EXPECT
CLOUDS TO REDEVELOP OVERNIGHT WHERE THEY HAVE NOT ALREADY...WITH
PARTIAL CLEARING AGAIN IN AFTERNOON HOURS WED.  ELSON

AST 0011  PDX 0001  SLE 0001  EUG 0001

.PDX...SMALL CRAFT ADVISORY CASCADE HEAD TO FLORENCE.