837
FXUS66 KPQR 082127
AFDPQR
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PORTLAND OR
227 PM PDT SAT AUG 8 2026
SYNOPSIS
WARM AND DRY CONDITIONS CONTINUE THROUGH THE UPCOMING
WEEK AS TEMPERATURES GRADUALLY MODERATE TOWARDS AUGUST NORMALS.
RENEWED ONSHORE FLOW WILL KEEP SMOKE EAST OF THE CASCADES,
WHILE PRECIPITATION CHANCES REMAIN VERY LOW THROUGH AT LEAST THE
MIDDLE OF NEXT WEEK. TEMPERATURES TREND WARMER TOWARDS THE
LATTER PART OF THE UPCOMING WEEK.
DISCUSSION...TONIGHT THROUGH FRIDAY
ZONAL FLOW ALOFT WITH
WEST/NORTHWEST WINDS AT THE SURFACE WILL HELP TO SUPPORT NEAR TO
SLIGHTLY WARMER THAN NORMAL DAYTIME HIGHS THROUGH THE WEEKEND
AND INTO AT LEAST THE MIDDLE OF NEXT WEEK. TOWARDS THURSDAY,
A MAJORITY OF ENSEMBLE MEMBERS ARE SHOWING A WEAK TROUGH DROPPING
DOWN OUT OF BRITISH COLUMBIA, WHICH LOOKS TO BRING RELATIVELY
COOLER TEMPERATURES INTO THE REGION. HOWEVER, SAID SYSTEM LOOKS
TO BE DRY WITH NO PRECIPITATION EXPECTED. LOOKING TOWARDS THE
END OF NEXT WEEK AND INTO THE FOLLOWING WEEKEND, ENSEMBLE
CLUSTERS INDICATE INCREASING PROBABILITIES FOR A STEEPER RIDGE
DEVELOPING OFFSHORE, WHICH WOULD ALLOW FOR TEMPERATURES TO WARM
AGAIN INTO THE UPPER 80S TO LOWER 90S POTENTIALLY.
THROUGH THE FORECAST PERIOD EXPECT WINDS FROM THE WEST/NORTHWEST
AROUND 15 MPH OR WEAKER ACROSS MOST AREAS, THE BREEZIEST
LOCATIONS WILL BE ALONG THE CENTRAL COLUMBIA RIVER GORGE AND
PORTIONS OF THE UPPER HOOD RIVER VALLEY WHERE GAP WINDS ARE
FORECAST TO GUST APPROACHING 35 MPH, WITH A 20-30% CHANCE FOR
GUSTS EXCEEDING 40 MPH. COMBINED WITH LOW RELATIVE HUMIDITY AND
DRY FUELS, THESE CONDITIONS WOULD BE FAVORABLE FOR RAPID FIRE
SPREAD. IT SHOULD BE NOTED THAT NWS PENDLETON HAS ISSUED A RED
FLAG WARNING FOR THE CENTRAL GORGE AND PORTIONS OF EASTERN HOOD
RIVER COUNTY, IN EFFECT THROUGH 11 PM SATURDAY. ELSEWHERE ACROSS
NORTHWEST OREGON AND SOUTHWEST WASHINGTON, HIGHER RELATIVE
HUMIDITY AND WEAKER WINDS WILL NOT BE FAVORABLE FOR RAPID FIRE
SPREAD. /42-DH
AVIATION...THROUGH 18Z SUN
WESTERLY FLOW ALOFT AS HIGH
PRESSURE WEAKENS OVER THE REGION. CURRENTLY WIDESPREAD VFR ACROSS
THE AIRSPACE AS OF 21Z SAT. INLAND TERMINALS WILL STAY VFR THROUGH
THE PERIOD, WHILE COASTAL TERMINALS WILL SEE A RETURN OF DETERIORATED
CONDITIONS BY 04-06Z SUN. PROBABILISTIC GUIDANCE SUGGESTS CHANCES
AROUND 50-80% FOR MVFR CIGS, 40-60% FOR IFR CIGS, AND 20-30% FOR
LIFR CIGS FROM 04Z TO 18Z SUN.
OTHERWISE, NORTHWESTERLY WINDS AROUND 6-12 KT WILL CONTINUE THIS
AFTERNOON, THEN WEAKEN AFTER 06Z SUN. KONP AND A FEW INLAND
TERMINALS MAY SEE GUSTS UP TO 20 KT DURING THE AFOREMENTIONED
TIME. EXPECT SIMILAR WIND CONDITIONS TOMORROW.
KPDX AND APPROACHES...VFR CONDITIONS THROUGH PERIOD. NORTHWEST
WINDS AROUND 5-10 KT WITH GUSTS UP TO 20 KT POSSIBLE DURING THE
AFTERNOON/EVENING. WINDS WILL THEN DECREASE AROUND 06Z SUN.
~12
MARINE
HIGH PRESSURE OFFSHORE WILL MAINTAIN NORTHERLY WINDS
THROUGH THE WEEKEND AND INTO NEXT WEEK. SURFACE PRESSURE
GRADIENTS HAVE TIGHTENED THIS AFTERNOON, BRINGING INCREASED
CHANCES FOR WIND GUSTS UP TO 25 KT SOUTH OF CAPE FOULWEATHER
THROUGH THE WEEKEND AND INTO EARLY NEXT WEEK. SPECIFICALLY, THERE
REMAINS A 40% CHANCE FOR SMALL CRAFT WIND GUSTS TODAY SOUTH OF
CAPE FOULWEATHER, THEN A 60-80% CHANCE ON SUNDAY. AS A RESULT, A
SMALL CRAFT ADVISORY HAS BEEN ISSUED FOR THE INNER AND OUTER
WATERS SOUTH OF CAPE FOULWEATHER FROM 12 PM SUNDAY TO 2 AM MONDAY.
SIMILAR SMALL CRAFT CONDITIONS MAY REOCCUR MONDAY FOR THE WATERS
SOUTH OF CAPE FOULWEATHER. WIND DRIVEN SEAS ARE EXPECTED TO
REMAIN AROUND 4 TO 6 FT THROUGH THE WEEKEND AND MOST OF NEXT WEEK.
~12/DH
PQR WATCHES/WARNINGS/ADVISORIES
OR...NONE.
WA...NONE.
PZ...SMALL CRAFT ADVISORY FROM NOON SUNDAY TO 2 AM PDT MONDAY FOR
PZZ253.
SMALL CRAFT ADVISORY FROM 3 PM SUNDAY TO 2 AM PDT MONDAY FOR
PZZ273.
WWW.WEATHER.GOV/PORTLAND
INTERACT WITH US VIA SOCIAL MEDIA:
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X.COM/NWSPORTLAND
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