An upper level trough produced convective showers over the area One shower produced a waterspout in the Columbia River near Buoy #10.
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The episode as NWS PQR wrote it up.
An upper level trough produced convective showers over the area One shower produced a waterspout in the Columbia River near Buoy #10.
The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Portland, OR wrote its last area forecast discussion before the first event at Sep 5, 8:53 AM PST, 7 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE PORTLAND OR 953 AM PDT SAT SEP 5 2015 .SYNOPSIS...AN UPPER LEVEL TROUGH WILL MOVE EAST OF THE CASCADES TODAY WITH SHOWERS OVER THE CASCADES GRADUALLY ENDING. A WEAK FRONT WILL BRING SOME LIGHT RAIN TO THE COAST OVERNIGHT SATURDAY...AND POSSIBLY NORTHERN INLAND AREAS SUNDAY AFTERNOON. DRY WEATHER IS EXPECTED FOR LABOR DAY. ANOTHER WEAK FRONT MAY BRING LIGHT RAIN TO AREAS NORTH OF THE COLUMBIA RIVER TUESDAY MORNING. AN UPPER LEVEL RIDGE SHOULD KEEP THE NEXT APPROACHING DISTURBANCES NORTH OF THE AREA THEREAFTER WITH WARMING TEMPERATURES THROUGH THE REMAINDER OF THE WEEK. && .SHORT TERM...ONLY A FEW TWEAKS TO THE FORECAST THIS MORNING AS THE UPPER TROUGH CONTINUES TO SLIDE EAST OF THE CASCADES. MAY SEE JUST A FEW SHOWERS TODAY IN THE CASCADES...BUT OTHERWISE A DRY DAY IN STORE ALONG WITH DECREASING CLOUDS THROUGH THE DAY FOR A GENERALLY PARTLY TO MOSTLY SUNNY SATURDAY ACROSS THE AREA. HOWEVER...CLOUDS MAY BE SLOWER TO BREAK UP TOWARDS THE CASCADES AND FOOTHILLS. TEMPERATURES REMAIN SEVERAL DEGREES BELOW SEASONAL NORMALS INLAND...RISING INTO THE LOWER 70S INLAND. EXPECT INCREASING HIGH CLOUDS LATE TONIGHT AS A SHORTWAVE TROUGH PRESENTLY NEAR THE GULF OF ALASKA SLIDES SOUTH ALONG THE ALASKA/B.C. COAST BEFORE PUSHING INLAND IN SOUTHERN WASHINGTON ON SUNDAY. THESE HIGH CLOUDS WILL LIMIT EFFICIENCY OF RADIATIONAL COOLING SO MORNING LOWS ON SUNDAY LIKELY A FEW DEGREES WARMER THAN TODAY...PARTICULARLY FOR THE COASTAL VALLEYS AND NORTHERN WILLAMETTE VALLEY. MODELS SUGGEST THE ASSOCIATED SURFACE FRONT WILL WEAKEN AS IT APPROACHES OUR AREA. THUS...EXPECT LIGHT RAIN FOR SW WASHINGTON AND THE N OREGON COAST BY DAYBREAK SUNDAY...BEFORE GRADUALLY REACHING THE CENTRAL COAST AND INTO THE INTERIOR AROUND MIDDAY SUNDAY PRECIPITABLE WATER ABOVE ONE INCH AND A MODEST UPPER LEVEL JET PROVIDE FOR LIKELY MEASURABLE RAIN ALONG THE THE COAST AND INTO SW WASHINGTON. HOWEVER...MODELS SUGGEST A SIGNIFICANT WEAKENING OF THE FRONT AS IT APPROACHES THE COAST AND MOVES INLAND. THUS...MAINTAINED CURRENT QPF FORECAST WITH ONLY AROUND 0.10 INCH OR LESS FOR THE COAST AND COAST RANGE...AND EVEN LESS FOR LOCATIONS ACROSS THE INTERIOR. NONETHELESS... ASSOCIATED CLOUDINESS SHOULD KEEP TEMPERATURES ONLY AROUND 70 DEGREES INLAND FROM SALEM NORTHWARD...BUT FEWER CLOUDS SOUTH COULD LET EUGENE WARM INTO THE MID 70S. SHORTWAVE TROUGH PASSES THROUGH THE AREA WITH HEIGHTS RISING SUNDAY NIGHT INTO MONDAY. THIS WILL BRING DRY WEATHER AND SLIGHTLY WARMER TEMPERATURES FOR THE LABOR DAY HOLIDAY. ANOTHER DISTURBANCE MOVES INTO SOUTHERN B.C. ON TUESDAY BUT WITH A STRENGTHENING UPPER RIDGE SUSPECT THE PRIMARY IMPACT WILL BE SOME ADDITIONAL CLOUDS MOST RAIN REMAINS NORTH OF THE AREA EXCEPT FOR PERHAPS SOME LIGHT DRIZZLE NORTHER OF THE COLUMBIA RIVER LATER TUE AFTERNOON. CULLEN .LONG TERM...TUESDAY NIGHT THROUGH FRIDAY NIGHT. NO CHANGES. PREVIOUS DISCUSSION FOLLOWS. AN UPPER LEVEL RIDGE SHOULD KEEP THE STORM TRACK NORTH OF OREGON THROUGH THE END OF THE WORK WEEK. INTERIOR TEMPERATURES WILL WARM INTO THE 80S...AND COASTAL TEMPERATURES INTO THE 70S BY WEDNESDAY...AND REMAIN ABOVE SEASONAL NORMAL THROUGH THE WEEK. TJ && .AVIATION...EXPECT VFR CONDITIONS UNDER CLEARING SKIES THROUGH TONIGHT. A WEAK FRONT WILL MOVE ACROSS THE REGION SUNDAY MORNING BRINGING AN INCREASE IN CLOUD COVER AND RAIN CHANCES. CONDITIONS ALONG THE COAST WILL LIKELY LOWER TOWARDS MVFR...AND POSSIBLY IFR...BETWEEN 09-12Z. THE INTERIOR LOOKS TO REMAIN VFR...BUT BRIEF PERIODS OF REDUCED CIGS AND VSBY MAY BE POSSIBLE UNDER HEAVIER RAIN BANDS AFTER 12Z. KPDX AND APPROACHES...VFR UNDER CLEARING SKIES THROUGH TONIGHT. CLOUD COVER AND RAIN CHANCES INCREASE AFTER 12Z...WITH REDUCED CIGS AND VSBY POSSIBLE UNDER HEAVIER RAIN BANDS. /64 && .MARINE...NO CHANGES. PREVIOUS DISCUSSION FOLLOWS...EXPECT RELATIVELY BENIGN WINDS AND SEAS THROUGH EARLY NEXT WEEK. A WEAK FRONT WILL MOVE ACROSS THE WATERS ON SUNDAY MORNING AND LIKELY BRING A FEW HOURS OF SOUTHERLY WINDS...BUT WIND SPEEDS SHOULD STAY UNDER 20 KT. THERMAL LOW PRESSURE THEN LOOKS TO REDEVELOP OVER NORTHERN CALIFORNIA...BRINGING A RETURN TO GUSTY NORTHERLY WINDS...ESPECIALLY ACROSS THE CENTRAL OREGON WATERS NEXT WEEK. WITH THAT SAID...WINDS WILL LIKELY ONLY FLIRT WITH SMALL CRAFT ADVISORY LEVEL GUSTS OF 20 TO 25 KT THROUGH THE MIDDLE OF NEXT WEEK. IT APPEARS THE STRONGER AND MORE SOLID SMALL CRAFT ADVISORY LEVEL NORTHERLY WIND GUSTS OF 25 TO 30 KT WILL HOLD OFF UNTIL LATE IN THE WORK WEEK. /NEUMAN && .PQR WATCHES/WARNINGS/ADVISORIES... OR...NONE. WA...NONE. PZ...NONE. && INTERACT WITH US VIA SOCIAL MEDIA WWW.FACEBOOK.COM/NWSPORTLAND WWW.TWITTER.COM/NWSPORTLAND THIS DISCUSSION IS FOR NORTHWEST OREGON AND SOUTHWEST WASHINGTON FROM THE CASCADE CREST TO 60 NAUTICAL MILES OFFSHORE. THE AREA IS COMMONLY REFERRED TO AS THE FORECAST AREA.
The Portland,OR radar (KRTX), 88 km away, was scanning. The volume nearest the first event began at 16:55 UTC.
1 funnel cloud. Local standard time, as filed.
A fisherman observed a water spout over the columbia river near buoy 10, and submitted a photo of it to the local station KATU.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Oregon in 2015Every state in 2015This day in weather historyWarnings in Oregon, September 2015
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 601499.