992
FXUS66 KPQR 030455 AAA
AFDPQR
AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE PORTLAND OR
954 PM PDT THU JUL 2 2026
..UPDATED AVIATION DISCUSSION
SYNOPSIS
ONSHORE FLOW CONTINUES OVER THE NEXT WEEK. NEAR
ZONAL FLOW ALOFT TODAY THROUGH SUNDAY WILL BECOME SOUTHWESTERLY
EARLY NEXT WEEK, WITH SURFACE HIGH PRESSURE BUILDING THIS
WEEKEND. THIS PATTERN WILL BRING WARMER TEMPERATURES AND A GOOD
DEAL OF SUNSHINE DURING PEAK HEATING HOURS EACH DAY. MOST INLAND
VALLEYS WILL WARM INTO THE LOW TO MID 80S EACH DAY, EXCEPT 70S
TODAY. ONSHORE FLOW WILL KEEP THE COAST COOLER WITH HIGHS IN THE
60S.
DISCUSSION...THURSDAY AFTERNOON THROUGH THURSDAY
A VERY
SLIGHT PATTERN CHANGE OCCURS TODAY INTO FRIDAY AS THE UPPER
LEVEL TROUGH SITUATED OVER THE WEST COAST BEGINS FLATTENING OUT
INTO MORE ZONAL FLOW. ENSEMBLE GUIDANCE IS IN VERY GOOD
AGREEMENT THAT GENERALLY ZONAL FLOW WILL REMAIN OVER THE AREA
INTO SUNDAY. ALTHOUGH GENERAL ONSHORE FLOW REMAINS IN THIS
PATTERN, THERE WILL BE LESS OF A PUSH INLAND, SO STRATUS COVER
THAT FORMS IN THE MORNINGS WILL MOSTLY BREAK UP BY MIDDAY,
ALLOWING FOR MORE SUNSHINE AND WARMER TEMPERATURES. SOME
LOCATIONS ALONG THE COAST MAY REMAIN SOCKED IN BY STRATUS WHILE
OTHERS MIGHT CLEAR OUT. EXPECT INTERIOR LOWLAND TEMPERATURES IN
THE LOW TO MID 70S TODAY, INCREASING INTO THE LOW 80S FOR
TOMORROW THROUGH THE HOLIDAY WEEKEND. NORTHWEST WINDS WILL
BECOME LOCALLY BREEZY ALONG THE COLUMBIA RIVER, THE CENTRAL
GORGE, AND DOWNWIND OF THE COAST RANGE GAPS EACH AFTERNOON AND
EVENING. EXPECT WIND GUSTS OF 15-25 MPH, EXCEPT UP TO 25-30 MPH
IN THE GORGE.
ENSEMBLE GUIDANCE IS IN AGREEMENT THAT RIDGING BUILDING OVER
THE CENTRAL US PUSHES SLIGHTLY NORTHWEST INTO NW OR AND SW WA ON
MONDAY. DAYTIME TEMPERATURES WILL PEAK FOR THE WEEK ON MONDAY,
WARMING INTO THE MID TO UPPER 80S FOR THE INTERIOR LOWLANDS WITH
A 10-30% CHANCE OF TEMPERATURES REACHING 90 DEGREES BETWEEN
VANCOUVER AND SALEM. THEN A STRONG LOW PRESSURE SYSTEM WILL
SLOWLY MOVE EAST INTO BRITISH COLUMBIA TUESDAY INTO LATE NEXT
WEEK, PUSHING THE RIDGING OUT OF THE PACNW AND LOWERING HEIGHTS
OVER THE PACNW. TEMPERATURES ARE SLATED TO REMAIN IN THE LOW
80S TUESDAY THROUGH THE REST OF NEXT WEEK WITH LESS THAN 5-10%
CHANCE OF TEMPERATURES REACHING 90 DEGREES.
IT IS IMPORTANT TO REMEMBER THAT WHILE TEMPERATURES WILL BE
WARMING UP FOR THE HOLIDAY WEEKEND AND NEXT WEEK, MANY LOCAL
LAKES AND RIVERS REMAIN VERY COLD AND CAN CAUSE COLD WATER
SHOCK. ALSO, RIVERS MAY STILL HAVE SWIFT CURRENTS IN SOME AREAS,
WHICH CAN QUICKLY SWEEP YOU AWAY. PLEASE PRACTICE WATER SAFETY
BY WEARING LIFE JACKETS, VISITING WITH A BUDDY, AND ALWAYS BEING
AWARE OF YOUR SURROUNDINGS. -03
AVIATION
SATELLITE IMAGERY AND TERMINAL OBSERVATIONS AS OF LATE
THURSDAY EVENING DEPICTS WIDESPREAD MARINE STRATUS ALONG THE COAST
BRINGING IFR CIGS. MEANWHILE, WILLAMETTE VALLEY TERMINALS REMAIN VFR
WITH PATCHY LOW-END VFR (4-5 KFT) STRATUS. TONIGHT, THERE IS HIGH
CONFIDENCE FOR IFR CONDITIONS PERSISTING ALONG THE COAST THROUGH
EARLY FRIDAY MORNING, BEFORE IMPROVING TO LOW-END MVFR (1-2 KFT)
AROUND 15-16Z FRI. FOR WILLAMETTE VALLEY TERMINALS, CIGS WILL
GRADUALLY FILL-IN OVERNIGHT, WITH A 40-60% CHANCE FOR HIGH-END MVFR
CIGS (2-3 KFT) AT ANY GIVEN HOUR BETWEEN 12-18Z FRI. AFTER 18Z FRI,
DAYTIME HEATING WILL INCREASE MIXING AND IMPROVE CONDITIONS TO VFR
ACROSS THE VALLEY AS STRATUS BREAKS OUT. ALONG THE COAST, GUIDANCE
SUGGESTS MVFR STRATUS HOLDS ON THROUGHOUT THE DAY. LIGHT AND
VARIABLE WINDS UNDER 5 KT THROUGH 15-18Z FRI AT ANY GIVEN TERMINAL,
BECOMING NORTHWESTERLY IN THE AFTERNOON AND REMAINING UNDER 10 KT.
KPDX AND APPROACHES...VFR THROUGH 12Z FRI, TRENDING MVFR BETWEEN 12-
18Z FRI (50-60% CHANCE AT ANY GIVEN HOUR). IMPROVEMENT TO VFR WITH
STRATUS BREAKING OUT AFTER 18Z FRI. LIGHT NORTHWESTERLY WINDS
THROUGHOUT THE TAF PERIOD. -10
MARINE
CURRENT SEAS OF 3 TO 5 FT AND NORTHERLY WINDS AROUND 5
TO 10 KT WILL CONTINUE THROUGH FRIDAY MORNING. WINDS WILL
THEN INCREASE FRIDAY AFTERNOON AND EVENING TO AROUND 10 TO 15 KT,
STRONGEST TO THE SOUTH OF CAPE FOULWEATHER WHERE GUSTS UP TO 20
KT ARE EXPECTED LATE IN THE DAY. THIS WILL HELP INCREASE SEAS BY A
FOOT OR TWO, BUT CONDITIONS ARE EXPECTED TO REMAIN BELOW SMALL
CRAFT ADVISORY CRITERIA.
SATURDAY AND SUNDAY, A THERMALLY INDUCED SURFACE TROUGH WILL
BUILD NORTHWARD UP THE OREGON COAST, BRINGING NORTHERLY WIND GUSTS
UP 20-25 KT. ALTHOUGH SIGNIFICANT WAVE HEIGHTS ARE NOT EXPECTED
TO INCREASE MUCH, INCREASING TO AT MOST 8 FT BY SUNDAY, THE
INCREASING WINDS WILL RESULT IN CHOPPIER SEAS. IN RESPONSE TO
EXPECTED GUSTY WINDS, SMALL CRAFT ADVISORIES HAVE BEEN ISSUED FOR
THE INNER AND OUTER WATERS SOUTH OF CAPE FALCON OR FROM SATURDAY
AFTERNOON TO EARLY SUNDAY MORNING. SEAS AND NORTHERLY WINDS THEN
GRADUALLY EASE EARLY NEXT WEEK.~12/23
PQR WATCHES/WARNINGS/ADVISORIES
OR...NONE.
WA...NONE.
PZ...SMALL CRAFT ADVISORY FROM 8 PM SATURDAY TO 5 AM PDT SUNDAY FOR
PZZ252-272.
SMALL CRAFT ADVISORY FROM 2 PM SATURDAY TO 5 AM PDT SUNDAY FOR
PZZ253-273.
WWW.WEATHER.GOV/PORTLAND
INTERACT WITH US VIA SOCIAL MEDIA:
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X.COM/NWSPORTLAND
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