An area of instability delveloped over Northwest Oregon Sunday evening producing a funnel cloud.
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Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS PQR wrote it up.
An area of instability delveloped over Northwest Oregon Sunday evening producing a funnel cloud.
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 Jul 17, 1:30 PM PST, 4 hours 30 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE PORTLAND OR 230 PM PDT SUN JUL 17 2011 .SYNOPSIS...A DISTURBANCE ASSOCIATED WITH AN UPPER LEVEL TROUGH OFF THE OREGON COAST WILL CONTINUE TO PRODUCE RAIN ACROSS MUCH OF THE AREA THIS EVENING. SHOWERS ARE EXPECTED TO DECREASE MONDAY... ALTHOUGH THUNDERSTORMS ARE POSSIBLE IN THE CASCADES AND FOOTHILLS. THE UPPER LEVEL TROUGH IS EXPECTED TO MOVE ONSHORE TUESDAY AND BRING ANOTHER CHANCE FOR SHOWERS AND THUNDERSTORMS. YET ANOTHER COLD FRONT IS EXPECTED WEDNESDAY AND THURSDAY...WITH ANOTHER CHANCE FOR RAIN. A SLOW REBOUND TO NEAR NORMAL TEMPERATURES IS POSSIBLE BY NEXT WEEKEND. && .SHORT TERM...A VIGOROUS SHORTWAVE ASSOCIATED WITH THE UPPER LEVEL LOW NEAR 40N/129W CONTINUES TO MOVE ACROSS THE AREA THIS AFTERNOON PRODUCING AN EXTENSIVE AREA OF HEAVY RAIN FROM THE COAST RANGE TO THE CASCADES. A FEW LOCATIONS IN THE CASCADES AND FOOTHILLS HAVE RECORDED ONE-HALF TO NEARLY AN INCH OF RAIN TODAY. IN THE VALLEY...SEVERAL REPORTS OF AROUND ONE-HALF INCH OF RAIN. A FEW SITES MAY SEE SOME DAILY RECORD RAINFALL TOTALS. THIS DISTURBANCE IS EXPECTED TO WEAKEN LATER THIS EVENING AND OVERNIGHT AS THE UPPER LOW SLOWLY SINKS SOUTHWARD NEAR 130W AND BE SOUTH OF 40N EARLY MONDAY MORNING. THE NEXT DISTURBANCE PIVOTING AROUND THIS LOW WILL LIKELY AFFECT SW OREGON AND FAR NW CALIFORNIA MONDAY...WHILE THE MASSIVE UPPER RIDGE OVER THE CENTER OF THE U.S. TRIES TO NUDGE A LITTLE WESTWARD INTO IDAHO...EASTERN OREGON AND EASTERN WASHINGTON. AS A RESULT MONDAY WILL LIKELY BE A BIT WARMER...WITH TEMPS APPROACHING NORMAL FOR MID JULY. CONVECTIVE INDICES ALSO SHOW A THREAT OF THUNDERSTORMS MONDAY AFTERNOON/EVE IN THE FOOTHILLS AND CASCADES...POSSIBLY ENCROACHING PART OF THE SOUTHERN AND CENTRAL WILLAMETTE VALLEY. MODELS CONTINUE TO SHOW THE OFFSHORE UPPER LEVEL TROUGH OPENING UP AND LIFTING OUT THROUGH OUR AREA TUESDAY. AS THIS SYSTEM LIFTS OUT TO THE NORTHEAST WE WILL SEE AN INCREASE IN PRECIPITATION ON TUES AND THUS HAVE INCREASED POPS ON TUES. THUNDERSTORMS ARE ALSO POSSIBLE TUES AFTERNOON AND EVENING...ESPECIALLY NEAR THE CASCADES. TW .LONG TERM...YET ANOTHER SYSTEM MOVES INTO THE REGION LATE WED AND THURSDAY FROM THE NORTHWEST. BEST CHANCE FOR RAIN WITH THIS SYSTEM WILL BE ALONG THE NORTH COAST. AFTER THAT...THE GFS AND ECMWF ARE ENTHUSIASTIC ABOUT BUILDING AT LEAST A FLAT RIDGE BACK INTO THE PACIFIC NORTHWEST BY NEXT WEEKEND. THIS MAY ALLOW DRIER WEATHER AND A CHANCE FOR TEMPS TO FEEL MORE LIKE ONE WOULD EXPECT FOR MID TO LATE JULY. TW/WEAGLE && .AVIATION...AN UPPER LOW ALONG THE COAST CONTINUES TO BRING RAINFALL TO THE REGION EARLY THIS AFTERNOON. THE RAINFALL IS EXPECTED TO TAPER OFF THIS AFTERNOON...BUT SHOWER THREAT WILL LIKELY REMAIN INTO THE EVENING. PERIODS OF IFR/MVFR CIGS AND VSBYS TO CONTINUE THROUGH ABOUT 00Z. CONDITIONS SHOULD THEN BEGIN TO IMPROVE THIS EVENING AS SHOWER ACTIVITY NEARS AN END. MAINLY VFR EXPECTED OVERNIGHT THROUGH TOMORROW AFTERNOON. HOWEVER...SHOWER THREAT RETURNS TOMORROW AFTERNOON. SO PERIODS OF MVFR REMAIN A POSSIBILITY IN ANY HEAVY SHOWER ACTIVITY. THERE IS ALSO A POSSIBILITY FOR SOME THUNDER...PARTICULARLY IN THE CASCADES AND SOUTHERN WILLAMETTE VALLEY. KPDX AND APPROACHES...CONTINUED PERIODS OF MVFR CIGS AND VSBY IN RAIN THROUGH ABOUT 00Z. RAIN SHOULD THEN TAPER TO SHOWERS...ALLOWING CONDITIONS TO BEGIN TO IMPROVE. MAINLY VFR EXPECTED OVERNIGHT THROUGH TOMORROW AFTERNOON. SHOWER THREAT RETURNS TOMORROW AFTERNOON. JFP && .MARINE...WEAK SURFACE LOW OVER THE WATERS THROUGH MONDAY MORNING THEN HIGHER PRESSURE LATE MONDAY AND TUESDAY. ANOTHER LOW WILL APPROACH WEDNESDAY. LIGHT WINDS AND SEAS THE NEXT FEW DAYS. && .PQR WATCHES/WARNINGS/ADVISORIES... OR...NONE. WA...NONE. PZ...NONE. && MORE WEATHER INFORMATION ONLINE AT... HTTP://WEATHER.GOV/PORTLAND 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.
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE PORTLAND OR 506 AM PDT SUN JUL 17 2011 ORZ001>014-WAZ019>023-039-040-181515- NORTH OREGON COAST-CENTRAL OREGON COAST- COAST RANGE OF NORTHWEST OREGON- CENTRAL COAST RANGE OF WESTERN OREGON-LOWER COLUMBIA- GREATER PORTLAND METRO AREA-CENTRAL WILLAMETTE VALLEY- SOUTH WILLAMETTE VALLEY-WESTERN COLUMBIA RIVER GORGE- NORTHERN OREGON CASCADE FOOTHILLS-NORTHERN OREGON CASCADES- CASCADE FOOTHILLS IN LANE COUNTY-CASCADES IN LANE COUNTY- UPPER HOOD RIVER VALLEY-SOUTH WASHINGTON CASCADES-WILLAPA HILLS- SOUTH WASHINGTON COAST-I-5 CORRIDOR IN COWLITZ COUNTY- GREATER VANCOUVER AREA-SOUTH WASHINGTON CASCADE FOOTHILLS- 506 AM PDT SUN JUL 17 2011 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTHWEST OREGON AND SOUTHWEST WASHINGTON. .DAY ONE...TODAY AND TONIGHT NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT LIKELY BE NEEDED TODAY.
The Portland,OR radar (KRTX), 47 km away, was scanning. The volume nearest the first event began at 01:58 UTC.
1 funnel cloud. Local standard time, as filed.
A concerned citizen sent photos to the local National Weather Service office Sunday evening of a funnel cloud that formed over Clatskanie, Oregon.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Oregon in 2011Every state in 2011This day in weather historyWarnings in Oregon, July 2011
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: 333927.