570
FXUS66 KPQR 080441 CCA
AFDPQR
AREA FORECAST DISCUSSION CORRECTED
NATIONAL WEATHER SERVICE PORTLAND OR
934 PM PDT FRI AUG 7 2026
CORRECTED AVIATION DISCUSSION.
SYNOPSIS
WARM AND DRY CONDITIONS CONTINUE TODAY, BUT
TEMPERATURES ARE EXPECTED TO GRADUALLY MODERATE TOWARD AUGUST
NORMS BY SUNDAY, CONTINUING INTO EARLY NEXT WEEK. RENEWED
ONSHORE FLOW WILL KEEP SMOKE EAST OF THE CASCADES. PRECIPITATION
IS NOT EXPECTED DURING THE NEXT WEEK ACROSS THE AREA.
DISCUSSION...TODAY THROUGH THURSDAY
SATELLITE IMAGERY AND
SURFACE OBSERVATIONS AS OF EARLY FRIDAY AFTERNOON DEPICTS MOSTLY
SUNNY SKIES ACROSS INTERIOR LOCATIONS WITH MARINE CLOUDS
DISSIPATING ALONG THE COAST. CLOUDS SHOULD CONTINUE BREAKING UP
ALONG THE COAST AND LEAD TO SOME BRIEF AFTERNOON SUNSHINE. CAN'T
RULE OUT SOME CLOUDS HUGGING THE IMMEDIATE COASTLINE AS WE
MAINTAIN MOIST ONSHORE FLOW. THIS ONSHORE FLOW, WHERE WINDS COME
FROM THE WEST/NORTHWEST, IS WHAT'S CLEARING WESTERN OREGON AND
WASHINGTON FROM ALL THE SMOKE AND HAZE THESE LAST SEVERAL DAYS.
EXPECT THESE WINDS FROM THE WEST/NORTHWEST TO KEEP PUSHING SMOKE
EASTWARD AS WE HEAD INTO THE WEEKEND.
HIGH PRESSURE WILL MAINTAIN DRY AND WARM CONDITIONS TODAY
THROUGH THE WEEKEND, AFTERNOON HIGHS FORECAST IN THE UPPER 80S
TO LOW 90S TODAY. A SHORTWAVE TROUGH APPROACHING THE COAST
TONIGHT INTO EARLY SATURDAY MORNING WILL STRENGTHEN ONSHORE
FLOW AND LIKELY DEEPEN THE MARINE LAYER ENOUGH TO PUSH CLOUDS
INLAND UP THE LOWER COLUMBIA RIVER VALLEY INTO THE
PORTLAND/VANCOUVER METRO. AFTERNOON SUN SHOULD ALLOW TEMPS TO
WARM AGAIN INTO THE MID TO UPPER 80S ACROSS THE INTERIOR
LOWLANDS SATURDAY AFTERNOON. WHILE WINDS FROM THE WEST/NORTHWEST
GENERALLY REMAIN 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 UP TO 30-35 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. NWS PENDLETON HAS ISSUED A RED FLAG WARNING FOR THE
CENTRAL GORGE AND PORTIONS OF EASTERN HOOD RIVER COUNTY, IN
EFFECT FROM 11 AM TODAY 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.
THERE IS HIGH CONFIDENCE TEMPERATURES TREND INTO THE LOW TO MID
80S SUNDAY THROUGH EARLY NEXT WEEK AS A MORE ZONAL FLOW PATTERN
EMERGES. MAJORITY OF ENSEMBLE MEMBERS SHOW A WEAK TROUGH
APPROACHING THE PACIFIC NORTHWEST MIDDLE OF NEXT WEEK, HOWEVER,
IT APPEARS TO BE A DRY TROUGH WITH NO PRECIPITATION CHANCES
EXPECTED. -10
AVIATION...THROUGH 06Z SUN
WEST TO SOUTHWEST FLOW ALOFT
CONTINUES THROUGH THE PERIOD AS HIGH PRESSURE REMAINS OVER THE
REGION. AT 04Z SAT, MARINE STRATUS IS REFORMING ALONG THE COAST AND
IS FORECAST TO PRODUCE MVFR/IFR/LIFR CIGS ALONG THE ENTIRE NW OR AND
SW WA COAST BY 06-08Z SAT. GUIDANCE INDICATES STRATUS WILL DISSIPATE
WITH CONDITIONS IMPROVING TO VFR BY 18-21Z SAT, DISSIPATING FROM THE
NORTH TO SOUTH. VFR CONDITIONS ARE EXPECTED OVER THE NEXT 24 HOURS
FOR INLAND TERMINALS, THOUGH A STRONGER MARINE PUSH COULD ALLOW
STRATUS AND MID-LEVEL CLOUDS TO PUSH EAST THROUGH THE COLUMBIA RIVER
TO AROUND KKLS.
NORTHWESTERLY WINDS WILL WEAKEN BELOW 6 KTS BY 06-08Z SAT AT ALL
TERMINALS THEN INCREASE AGAIN TO 6-11 KT AFTER 18-22Z SAT. KONP MAY
SEE GUSTS UP TO 20 KT TOMORROW AFTER 18Z SAT AS WINDS OVER THE
WATERS STRENGTHEN, DECREASING BY 04-06Z SUN.
KPDX AND APPROACHES...VFR CONDITIONS THROUGH PERIOD. MID TO HIGH
LEVEL CLOUDS EXPECTED TO DEVELOP AFTER 12Z SAT, CLEARING BY 18-20Z
SUN. NORTHWEST WINDS AROUND 6-8 KT THIS AFTERNOON WILL BECOME LIGHT
AND VARIABLE AFTER 06-08Z SAT, THEN INCREASE ONCE AGAIN TO 7-9 KT
AFTER 22Z SAT. -03
MARINE
HIGH PRESSURE OFFSHORE WILL MAINTAIN NORTHERLY WINDS
THROUGH THE WEEKEND AND INTO NEXT WEEK. WINDS WILL REMAIN 20 KT
OR LESS THROUGH SATURDAY MORNING. SURFACE PRESSURE GRADIENTS WILL
THEN TIGHTEN SATURDAY 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 IS A 40%
CHANCE FOR SMALL CRAFT WIND GUSTS ON SATURDAY SOUTH OF CAPE
FOULWEATHER, THEN INCREASED CHANCES OF 50-70% ON SUNDAY. WIND
DRIVEN SEAS ARE EXPECTED TO REMAIN AROUND 4 TO 6 FT THROUGH THE
NEXT WEEK.
~12/DH
PQR WATCHES/WARNINGS/ADVISORIES
OR...NONE.
WA...NONE.
PZ...NONE.
WWW.WEATHER.GOV/PORTLAND
INTERACT WITH US VIA SOCIAL MEDIA:
WWW.FACEBOOK.COM/NWSPORTLAND
X.COM/NWSPORTLAND
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