000 
FXUS66 KPQR 281559
AFDPQR

NORTHWEST OREGON AND SOUTHWEST WASHINGTON FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PORTLAND OR
900 AM PDT THU AUG 28 2003

.SYNOPSIS...WARM AND DRY WEATHER WILL CONTINUE THROUGH THE WEEK WITH
HIGH PRESSURE ALOFT AND AT THE SURFACE.

.DISCUSSION...
.SHORT TERM...ALL MODELS IN REASONABLE AGREEMENT IN THE SHORT TERM.
UPPER LEVEL LOW APPROACHING THE WEST COAST NEAR 41 N THIS MORNING.
WATER VAPOR IMAGERY SHOWS PLENTY OF HIGH LEVEL MOISTURE AHEAD OF THE
SYSTEM WITH GOOD CIRCULATION. HOWEVER...MODEL CROSS SECTIONS INDICATE
LITTLE IN THE WAY OF MID LEVEL MOISTURE. THIS LOW WILL MOVE OVER NRN
CA LATE TODAY AND OVER NRN NV BY FRI MORNING. ENOUGH INSTABILITY WITH
LOW TO GIVE SLIGHT RISK OF TSTMS FAR S MOUNTAINS. SHALLOW MARINE AIR
NRN COAST THIS MORNING WITH LIGHT ONSHORE FLOW BURNS OFF QUICKLY. AS
UPR LOW MOVES E TONIGHT UPR RIDGE BUILDS OFF COAST BY FRI MORNING.
ONSHORE FLOW A LITTLE STRONGER PUTS MORE MARINE CLOUDS ALONG COAST
FRI MORNING WITH MORE INLAND PENETRATION DOWN COL RIVER. UPR RIDGE
BUILDS INTO WRN ORE FRI AND TURNS LOW LEVEL FLOW NORTHERLY CLEARING
ALL CLOUDS. THERMAL TROUGH SHIFTS TO COAST FRI NIGHT. MARINE AMS VERY
SHALLOW POSSIBLE AREAS OF FOG. UPR RIDGE MOVES TO ERN WA SAT. THERMAL
TROUGH SHIFTS TO SRN CASCADES WITH LOW LEVEL FLOW WARM AND NORTHERLY. 


.LONG TERM...NO CHANGES. PREVIOUS DISCUSSION FOLLOWS...
EXTENDED MODELS CLOSE THOUGH EURO/CANADIAN STRONGER ON
UPR RIDGE TUE/WED.  SYSTEM MOVING BY TO N SUN INCREASES ONSHORE FLOW
SO TEMPS COOL DOWN SOME FROM SAT WITH AREAS OF MARINE CLOUDS COAST
AND N INTERIOR.  UPR RIDGE RETURNS ON MON WITH MARINE CLOUDS ONLY ON
NRN COAST AS FLOW STARTS TURNING N.  COMPROMISE BETWEEN
GFS/EURO/CANADIAN SHOWS VERY WARM TEMPS TUE/WED WITH STRONG UPR
RIDGE.

AST 00000  PDX 00000  SLE 00000  EUG 00000

.PQR...NONE.

$$