FXUS66 KPQR 012231
AFDPQR

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PORTLAND OR
230 PM PST WED DEC 01 2004

.SYNOPSIS.... DRIER WEATHER TONIGHT INTO FRI AS HIGH PRESSURE BUILDS
OVER THE REGION...BUT EXPECT MORE FOG AND LOW CLOUDS. FOG WILL BE
RATHER PERSISTENT ON THU...ESPECIALLY FROM SALEM SOUTHWARD ALONG I-5
CORRIDOR. NEXT SYSTEM ARRIVES LATE FRI AND SAT...WITH WET WEATHER AND
LOW SNOW LEVELS FOR NEXT WEEKEND.
&&

.SHORT TERM...STILL A FEW SHOWERS LEFT OVER THE CASCADES THIS
EVENING...BUT THOSE WILL DISSIPATE DURING THE EVENING AS HIGH
PRESSURE WITH NORTHWESTERLY FLOW ALOFT CONTINUES BUILDING OVER THE
REGION. DRY TONIGHT INTO EARLY FRI...BUT EXPECT PLENTY OF NIGHT TIME
FOG. FOG WILL HAVE A HARD TIME CLEARING OUT OF THE INLAND VALLEYS THU
AFTERNOON ESPECIALLY SOUTH OF SALEM. HAVE TWEAKED FORECASTS TO
REFLECT MORE CLOUDS/FOG AND COOLER TEMPS IN CORVALLIS TO COTTAGE
GROVE FOR THU AFTERNOON.

WILL KEEP FRIDAY DRY. MODELS CONTINUE TO SLOW DOWN THE SYSTEM.
APPEARS MOST RAIN WILL REMAIN OVER WASHINGTON STATE FRI EVENING...
THEN SLOWLY SAG SOUTH OVERNIGHT. MAIN SHOT OF RAIN WOULD BE SAT
MORNING INTO THE AFTERNOON. MODELS CONTINUE TO HINT AS SPLITTING THE
SYSTEM SO AMOUNTS OF RAIN AND MOUNTAIN SNOW MAY YET BE IN QUESTION.
STILL...SHOULD BE SIMILAR TO PREVIOUS FRONTS. COOL SHOWERY WEATHER ON
TAP FOR REST OF THE WEEKEND.                               ROCKEY.

.LONG TERM...
GFS/ECMWF/CANADIAN MODELS CURRENTLY AGREEING ON A DECENT UPPER
TROUGH AND SURFACE LOW MOVING INTO THE PAC NORTHWEST SUN NIGHT.
WHILE A DIGGING TENDENCY TOWARD CA IS INDICATED A SUBSTANTIAL
PORTION OF THE FRONT SHOULD SHIFT EAST ACROSS THE DISTRICT.

A COUPLE OF ADDITIONAL SYSTEMS MAY MOVE INTO THE AREA DURING THE
FIRST HALF OF NEXT WEEK ALTHOUGH MODEL SOLUTIONS RATHER VARIABLE IN
TIMING AND INTENSITY. THERE APPEARS TO BE A TENDENCY TOWARD FLAT
RIDGING BUILDING IN THE EASTERN PAC BY MID WEEK FOR RISING FREEZING
LEVELS BUT CONTINUED MOIST ONSHORE FLOW. WILLIS
&&

.PRELIMINARY POINT POPS
AST 000088  PDX 000068  SLE 100068  EUG 200058
&&

.PQR WATCHES/WARNINGS/ADVISORIES...
.OR/WA...SMALL CRAFT ADVISORY FOR ROUGH COLUMBIA BAR CONDITIONS
               TONIGHT.
&&

$$

MORE WEATHER INFORMATION ONLINE AT...
HTTP://WEATHER.GOV/PORTLAND