120
FXUS66 KPQR 102141 AAA
AFDPQR
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PORTLAND OR
241 PM PDT TUE JUN 10 2025
SYNOPSIS
A PATTERN CHANGE ALOFT WILL SEE A STEADY TRANSITION
TO COOLER WEATHER THROUGH THE WEEK AS ONSHORE FLOW STRENGTHENS.
LARGELY DRY CONDITIONS CONTINUE INTO THE WEEKEND, WITH THE NEXT
CHANCE FOR WIDESPREAD RAIN NOT EXPECTED UNTIL NEXT WEEK.
SHORT TERM...NOW THROUGH FRIDAY NIGHT
TEMPERATURES TODAY REMAIN
SOMEWHAT ELEVATED, WITH AFTERNOON HIGHS IN THE MID TO UPPER 80S
THROUGHOUT MOST OF THE INLAND AREAS. THE HOTTEST TEMPERATURES AROUND
90 DEGREES ARE EXPECTED ALONG THE CENTRAL COLUMBIA GORGE TO AROUND
HOOD RIVER, WHERE LOCALLY MODERATE HEATRISK MAY STILL PRESENT
HAZARDOUS CONDITIONS FOR THOSE WITHOUT EFFECTIVE COOLING AND/OR
ADEQUATE HYDRATION. THOSE SEEKING RELIEF FROM THE HEAT IN AREA LAKES
AND RIVERS SHOULD CONTINUE TO BE AWARE THAT WATER TEMPERATURES REMAIN
COLD AND HYPOTHERMIA CAN OCCUR DESPITE HOT AIR TEMPERATURES. COASTAL
HIGHS TODAY ARE CLOSER TO 60 DEGREES.
INCREASINGLY COOL TEMPERATURES IN THE NEXT FEW DAYS AS NORTHWEST
ONSHORE FLOW CONTINUES, BRINGING STEADILY DECREASING AFTERNOON HIGH
TEMPERATURES. UPPER LEVEL TROUGHING IS BEGINNING TO DEVELOP IN THE
NORTHERN PACIFIC OCEAN, THOUGH NO PRECIPITATION IS EXPECTED THROUGH
THE REST OF THE SHORT TERM. TEMPERATURES DAY-OVER-DAY CONTINUE TO
DECLINE, BOTTOMING OUT ON FRIDAY. ON FRIDAY, WE SEE A 70-80% CHANCE
OF HIGH TEMPERATURES IN THE WILLAMETTE VALLEY AND COLUMBIA LOWLANDS
EXCEEDING 70 DEGREES. RH VALUES CONTINUE TO INCREASE AS WELL DURING
THIS TIME, WITH MIN RH VALUES REACHING AROUND 40% ON FRIDAY.
/JLIU/PICARD
LONG TERM...SATURDAY THROUGH MONDAY
CONTINUED ENSEMBLE GUIDANCE
SHOWING A CLOSED UPPER LOW WILL TRACK TO THE SOUTHEAST FROM
SOUTH-CENTRAL ALASKA TOWARD THE HAIDA GWAII THIS WEEKEND. REPEATED
SHORTWAVE IMPULSES ON THE SOUTHERN FLANK OF THE LOW MAY BRING CHANCES
FOR LIGHT RAIN TO THE REGION THIS WEEKEND, BUT FEW ENSEMBLE MEMBERS
SUGGEST MUCH IN THE WAY OF ACCUMULATIONS UNTIL EARLY NEXT WEEK WHEN A
MORE ROBUST SHORTWAVE COULD BRING THE BEST CHANCE FOR WIDESPREAD
ACCUMULATING RAIN IN ALMOST TWO WEEKS. EVEN THEN, ONLY AROUND A
50-60% CHANCE OF ACCUMULATING RAINFALL AT THE MOMENT. /JLIU/PICARD
AVIATION
GENERALLY VFR ASIDE FROM THE COAST WHICH CONTINUES TO
SIT UNDER MVFR STRATUS. THE SEA BREEZE IS PUSHING SOME HAZE INTO
THE COASTAL TERMINALS CAUSING VISIBILITY TO SIT AROUND 6-8 SM.
WINDS CONTINUE TO BE ONSHORE ELSEWHERE WITH MINIMAL;L IMPACT.
BREEZY WINDS ALONG THE COAST WITH GUSTS UP TO 20 KT. TERMINALS
ABOVE 1000 FT MSL AND THOSE SOUTH OF LINCOLN CITY HAVE A 60-80%
CHANCE OF GUSTS GREATER THAN 20 KT BETWEEN 03-10Z WEDNESDAY. WINDS
WILL INCREASE SLOWLY TOWARDS THE END OF THE TAF PACKAGE.
PDX AND APPROACHES...VFR WITH NO CONCERNS. ONSHORE WINDS WITH
NORTHWESTERLY WINDS UP TO 15 KT ABOVE 1000 FT MSL.-MUESSLE
MARINE
ONSHORE CONTINUES TO AMPLIFY TODAY AS A WEAK AREA OF LOW
PRESSURE DROPS DOWN OVER THE WATERS. WILL SEE CLOUDY SKIES AND SEA
BREEZES IN THE AFTERNOON. NORTHWESTERLY WINDS OF 10-15 KT WITH
GUSTS UP TO 25 KT EXPECTED, ESPECIALLY IN THE OUTER WATERS. THE
INNER WATERS WILL BE LESS IMPACTED. 60-80% CHANCE OF GUSTS GREATER
THAN 20 KT FOR THE INNER WATERS SOUTH OF TILLAMOOK THIS AFTERNOON
INTO EARLY WEDNESDAY MORNING. THE NORTHERN INNER WATERS HAVE
MINIMAL CHANCES. SEAS WILL BE PERSISTENT AT 7-10 FT AT 11
SECONDS. THE OUTER WATERS, BETWEEN 30-60 NM WILL SEE MORE
CONSISTENT 10 FT SEAS THROUGH WEDNESDAY. WINDS AND SEAS WILL EASE
ON THURSDAY BEFORE INCREASING AGAIN ON FRIDAY. -MUESSLE
PQR WATCHES/WARNINGS/ADVISORIES
OR...NONE.
WA...NONE.
PZ...SMALL CRAFT ADVISORY FROM 2 AM TO 9 AM PDT WEDNESDAY FOR PZZ210.
SMALL CRAFT ADVISORY UNTIL 11 PM PDT THIS EVENING FOR
PZZ251>253.
SMALL CRAFT ADVISORY UNTIL 5 PM PDT WEDNESDAY FOR PZZ271>273.
WWW.WEATHER.GOV/PORTLAND
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