Funnel observed northeast of Adams.
Every event with a place to put it. Tap one for its entry below.
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 PDT wrote it up.
Funnel observed northeast of Adams.
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 Pendleton, OR wrote its last area forecast discussion before the first event at May 27, 7:20 PM PST, 10 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE PENDLETON OR 820 PM PDT TUE MAY 27 2008 .SHORT TERM...A WEATHER DISTURBANCE IS CURRENTLY MOVING INTO SOUTHERN IDAHO AND SOUTHEAST OREGON THIS EVENING. THUNDERSTORM DEVELOPMENT IN A MOIST AND UNSTABLE ATMOSPHERE THIS AFTERNOON AND EVENING HAVE MOSTLY BEEN THE PULSE TYPE THAT BECOME INTENSE FOR A BRIEF TIME AND THEN DISSIPATE QUICKLY. THE STRONGEST STORMS HAVE BEEN SOUTH OF THE FORECAST AREA IN SOUTHEAST OREGON AND OVER SOUTHERN IDAHO. AS THE WEATHER DISTURBANCE CONTINUES TO ADVANCE NORTHWARD THUNDERSTORM ACTIVITY WILL INCREASE ACROSS MAINLY THE SOUTHERN AREAS OF THE FORECAST AREA TONIGHT. HOWEVER NIGHT TIME COOLING AND RESULTANT STABILIZATION SHOULD PREVENT ANY STORMS FROM BECOMING SEVERE...WITH MOST THUNDERSTORM ACTIVITY ENDING BY SUNRISE. FORECAST WILL BE UPDATED TO EXTEND THUNDERSTORM DEVELOPMENT LATER INTO THE NIGHT. AN UNSETTLED WEATHER PATTERN WILL PERSIST FOR THE NEXT COUPLE OF DAYS AS A VERY BROAD UPPER LEVEL TROUGH OVER THE WEST COAST MAINTAINS ITS INFLUENCE ON THE REGION. 88 && .AVIATION...SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS WILL PERSIST LATE INTO THE EVENING AND DISSIPATE BY MORNING. THESE THUNDERSTORMS WILL HAVE THE MOST IMPACT ON CENTRAL AND NORTHEAST OREGON AND SOUTHEAST WASHINGTON TAF SITES (KRDM...KPDT...KPSC AND KALW). THESE STORMS MAY CAUSE BRIEF MVFR CONDITIONS IN THE IMMEDIATE VICINITY OF THE STORMS...OTHERWISE VFR CONDITIONS WILL PREVAIL OVERNIGHT AND ON WEDNESDAY. ISOLATED TO SCATTERED THUNDERSTORM ARE POSSIBLE AGAIN WEDNESDAY AFTERNOON. WIND SPEEDS THROUGH THE NEXT 24 HOURS ARE EXPECTED TO REMAIN LIGHT AND UNDER 10 KTS...EXCEPT IN THE IMMEDIATE VICINITY OF THUNDERSTORMS WHERE GUSTY AND ERRATIC WINDS ARE POSSIBLE. 88 && .HYDROLOGY...A FLOOD WATCH REMAINS IN EFFECT FOR THE NACHES RIVER NEAR NACHES THROUGH WEDNESDAY NIGHT. LATEST RIVER FORECASTS SHOW THAT RUNOFF FROM SNOWMELT COMBINED WITH RAINFALL MAY BE ENOUGH TO PUSH THE NACHES RIVER NEAR NACHES TO JUST ABOVE FLOOD STAGE BY WEDNESDAY EVENING. 88 && .PREV DISCUSSION... /ISSUED 152 PM PDT TUE MAY 27 2008/ SHORT TERM...TODAY THROUGH THURSDAY NIGHT...A BROAD AREA OF LOW PRESSURE WITH MULTIPLE CENTERS AND SMALL PIECES OF ENERGY ROTATING THROUGH IT WILL PERSIST THROUGH THURSDAY NIGHT. A PAIR OF VORTICITY MAXES WILL MOVE THROUGH DESCHUTES COUNTY AND THE COLUMBIA BASIN IN OREGON TONIGHT AND WEDNESDAY. THIS WILL COMBINE WITH AN UNSTABLE ATMOSPHERE TO KEEP A CHANCE OF THUNDERSTORMS OVER MOST OF EASTERN WASHINGTON AND OREGON THIS EVENING AND AGAIN WEDNESDAY AFTERNOON/EVENING. LIGHTNING STRIKES HAVE ALREADY BEEN OBSERVED THIS AFTERNOON IN WALLOWA...UNION...AND GRANT COUNTIES WITH BUILDUPS OVER THE REST OF OREGON. THURSDAY THE LOWS WILL BEGIN TO FILL AND THE ATMOSPHERE WILL BECOME LESS UNSTABLE. THIS WILL LIMIT THE THUNDERSTORM POTENTIAL AFTER MIDNIGHT WEDNESDAY. A FEW THUNDERSTORMS MAY DEVELOP OVER DESCHUTES COUNTY AND ALONG THE MOUNTAINS IN CENTRAL TO NORTHEAST OREGON THURSDAY AFTERNOON/EVENING WHERE THE DIURNAL HEATING WILL COMBINE WITH LINGERING INSTABILITY. WINDS WILL REMAIN LIGHT TONIGHT AND WEDNESDAY DUE TO A LACK OF UPPER LEVEL SUPPORT. A WEAK MARINE PUSH WILL BEGIN THURSDAY THAT WILL INCREASE WINDS NEAR THE COLUMBIA RIVER GORGE. COOL MARINE AIR ASSOCIATED WITH THE PUSH WILL ALSO INCREASE THE STABILITY NEAR THE CASCADES. COONFIELD LONG TERM...FRIDAY THROUGH SUNDAY NIGHT...ANOTHER TROUGH OF LOW PRESSURE WILL MOVE INTO THE EASTERN PACIFIC TURNING THE FLOW SOUTHWESTERLY ACROSS THE REGION. MODELS ARE IN GOOD AGREEMENT WITH THIS GENERAL PATTERN THROUGH THE WEEKEND. HOWEVER...THE SMALLER DETAILS DIFFER BETWEEN MODELS WITH THE GFS MODEL BRINGING IN PERIODIC DISTURBANCES FOR A CHANCE OF PRECIPITATION. THE EUROPEAN MODEL KEEPS MOST OF THESE DISTURBANCES OUT OF THE AREA...THOUGH INSTABILITY AND SOME MOISTURE WOULD ALSO WARRANT A CHANCE OF PRECIPITATION IN THE HIGHER TERRAIN. HAVE TAKEN A BLEND OF THE MODELS AND HAVE A CHANCE OF PRECIPITATION FOR CENTRAL OREGON AND THE MOUNTAINS OF NORTHEAST OREGON AND SOUTHEAST WASHINGTON FOR EACH DAY THROUGH THE WEEKEND. THOUGH...IF THE MORNING RUN OF THE GFS MODEL CONTINUES ITS CURRENT FORECAST...SATURDAY COULD SEE A STRONGER DISTURBANCE BRING THE BEST CHANCE FOR UNSTABLE AND SHOWERY CONDITIONS FOR THE REGION. DK MONDAY THROUGH TUESDAY NIGHT...MODELS ARE NOT IN THE BEST AGREEMENT BUT DO SHOW SOME SIMILARITIES FOR THIS TIME PERIOD. THE SPLIT FLOW LOOKS TO CONTINUE WITH A WEAK UPPER LEVEL LOW PUSHING ACROSS THE PACIFIC NORTHWEST MONDAY NIGHT INTO TUESDAY. WITH SOUTHWEST FLOW AHEAD OF THIS SYSTEM MOIST CONDITIONS ARE FAVORABLE FOR PRECIPITATION...WITH A GREATER FOCUS ON MOUNTAIN DRIVEN SHOWERS. GFS HAS A MUCH STRONGER UPPER LEVEL DISTURBANCE SLIDING DOWN FROM THE GULF OF ALASKA TUESDAY. A GOOD SHOT OF MOISTURE MAY BE ASSOCIATED WITH THIS SYSTEM...SO HAVE KEPT POPS IN THE FORECAST EVERYWHERE FOR THE LAST PERIOD AND WILL MAKE ADJUSTMENT PER NEW MODEL RUNS. WEBER && .PRELIMINARY POINT TEMPS/POPS... PDT 54 73 52 72 / 40 40 40 30 ALW 55 73 55 71 / 30 40 40 30 PSC 56 79 55 75 / 30 40 40 30 YKM 52 78 52 75 / 30 50 40 30 HRI 52 76 53 74 / 30 40 40 30 ELN 51 74 53 71 / 30 50 40 30 RDM 45 65 40 69 / 50 50 60 30 LGD 48 67 48 64 / 40 50 50 30 GCD 48 69 46 68 / 50 60 60 40 DLS 57 70 54 69 / 30 40 40 20 && .PDT WATCHES/WARNINGS/ADVISORIES... OR...NONE. WA...NONE. && TI:GGG FOR ADDITIONAL WEATHER INFORMATION, CHECK OUR WEB SITE AT... WWW.WEATHER.GOV/PENDLETON 88/84/88
HAZARDOUS WEATHER OUTLOOK...UPDATED
NATIONAL WEATHER SERVICE PENDLETON OR
1035 AM PDT TUE MAY 27 2008
UPDATED FOR FLOOD WATCH
ORZ041>044-049-050-501>506-WAZ024-026>030-501-502-281230-
EASTERN COLUMBIA RIVER GORGE OF OREGON-NORTH CENTRAL OREGON-
CENTRAL OREGON-LOWER COLUMBIA BASIN OF OREGON-GRANDE RONDE VALLEY-
WALLOWA COUNTY-FOOTHILLS OF THE BLUE MOUNTAINS OF OREGON-
NORTHERN BLUE MOUNTAINS OF OREGON-
SOUTHERN BLUE MOUNTAINS OF OREGON-
NORTHERN WHEELER AND SOUTHERN GILLIAM COUNTIES-JOHN DAY BASIN-
OCHOCO-JOHN DAY HIGHLANDS-
EASTERN COLUMBIA RIVER GORGE OF WASHINGTON-KITTITAS VALLEY-
YAKIMA VALLEY-LOWER COLUMBIA BASIN OF WASHINGTON-
FOOTHILLS OF THE BLUE MOUNTAINS OF WASHINGTON-
NORTHWEST BLUE MOUNTAINS-
EAST SLOPES OF THE CENTRAL CASCADES OF WASHINGTON-
EAST SLOPES OF THE SOUTHERN CASCADES OF WASHINGTON-
1035 AM PDT TUE MAY 27 2008
THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL AND NORTHEAST OREGON
AS WELL AS SOUTH CENTRAL AND SOUTHEAST WASHINGTON.
.DAY ONE...TODAY AND TONIGHT
THUNDERSTORMS
EAST SLOPES OF THE CENTRAL CASCADES OF WASHINGTON, EAST SLOPES
OF THE SOUTHERN CASCADES OF WASHINGTON, EASTERN COLUMBIA RIVER
GORGE OF WASHINGTON, KITTITAS VALLEY, YAKIMA VALLEY, LOWER
COLUMBIA BASIN OF WASHINGTON, FOOTHILLS OF THE BLUE MOUNTAINS
OF WASHINGTON, NORTHWEST BLUE MOUNTAINS, EASTERN COLUMBIA
RIVER GORGE OF OREGON, NORTH CENTRAL OREGON, CENTRAL OREGON,
LOWER COLUMBIA BASIN OF OREGON, GRANDE RONDE VALLEY, WALLOWA
COUNTY, FOOTHILLS OF THE BLUE MOUNTAINS OF OREGON, NORTHERN
BLUE MOUNTAINS OF OREGON, SOUTHERN BLUE MOUNTAINS OF OREGON,
NORTHERN WHEELER AND SOUTHERN GILLIAM COUNTIES, JOHN DAY
BASIN, OCHOCO-JOHN DAY HIGHLANDS
MOIST AND UNSTABLE AIR WILL CONTINUE TO BE PUMPED INTO THE REGION IN
AN EAST TO SOUTHEAST MID LEVEL FLOW AROUND A LARGE AND PERSISTENT
UPPER LOW PRESSURE SYSTEM OVER THE WESTERN STATES. THE COMBINATION
OF ABUNDANT MOISTURE IN THE ATMOSPHERE AND BREAKS IN THE OVERCAST AT
TIMES WILL ALLOW PERIODS OF SUNSHINE WHICH WILL CAUSE STRONG SURFACE
HEATING. AS A RESULT...ISOLATED TO SCATTERED AFTERNOON AND EVENING
THUNDERSTORMS WILL BE POSSIBLE. ALTHOUGH SEVERE THUNDERSTORMS ARE
NOT EXPECTED AT THIS TIME...SOME STORMS MAY PRODUCE STRONG GUSTY
WINDS...SMALL HAIL AND HEAVY RAIN. FLASH FLOODING MAY BECOME A
CONCERN IN SMALL STREAMS AND CREEKS AS WELL AS IRRIGATION
DITCHES/CULVERTS AND ROADWAY UNDERPASSES.
.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY
THUNDERSTORMS WEDNESDAY
EAST SLOPES OF THE CENTRAL CASCADES OF WASHINGTON, EAST SLOPES
OF THE SOUTHERN CASCADES OF WASHINGTON, EASTERN COLUMBIA RIVER
GORGE OF WASHINGTON, KITTITAS VALLEY, YAKIMA VALLEY, LOWER
COLUMBIA BASIN OF WASHINGTON, FOOTHILLS OF THE BLUE MOUNTAINS
OF WASHINGTON, NORTHWEST BLUE MOUNTAINS, EASTERN COLUMBIA
RIVER GORGE OF OREGON, NORTH CENTRAL OREGON, CENTRAL OREGON,
LOWER COLUMBIA BASIN OF OREGON, GRANDE RONDE VALLEY, WALLOWA
COUNTY, FOOTHILLS OF THE BLUE MOUNTAINS OF OREGON, NORTHERN
BLUE MOUNTAINS OF OREGON, SOUTHERN BLUE MOUNTAINS OF OREGON,
NORTHERN WHEELER AND SOUTHERN GILLIAM COUNTIES, JOHN DAY
BASIN, OCHOCO-JOHN DAY HIGHLANDS
FLOOD WEDNESDAY
EAST SLOPES OF THE CENTRAL CASCADES OF WASHINGTON, YAKIMA VALLEY
MUCH OF THE SAME WEATHER WILL CONTINUE THROUGH AT LEAST MID WEEK
WITH MOIST AND UNSTABLE AIR CONTINUING TO BE PUMPED INTO THE REGION
AROUND THE UPPER LOW PRESSURE SYSTEM. THE COMBINATION OF MOISTURE
LADEN AIR AND BREAKS IN THE OVERCAST AT TIMES WILL ALLOW PERIODS OF
SUNSHINE WHICH WILL CAUSE STRONG SURFACE HEATING. AS A
RESULT...ISOLATED TO SCATTERED AFTERNOON AND EVENING THUNDERSTORMS
WILL BE POSSIBLE EACH DAY. ALTHOUGH SEVERE THUNDERSTORMS ARE NOT
EXPECTED AT THIS TIME...SOME STORMS MAY PRODUCE STRONG GUSTY
WINDS...SMALL HAIL AND HEAVY RAIN. FLASH FLOODING MAY BECOME A
CONCERN IN SMALL STREAMS AND CREEKS AS WELL AS IRRIGATION
DITCHES/CULVERTS AND ROADWAY UNDERPASSES. AT THIS TIME...THE MOST
UNSTABLE DAY WITH THE GREATEST POTENTIAL FOR THUNDERSTORMS LOOKS TO
BE ON WEDNESDAY.
THE NACHES AND YAKIMA RIVERS ARE HIGH DUE TO SNOW MELT. ADDITIONAL
RUNOFF DUE TO PRECIPITATION MAY CAUSE THE NACHES RIVER NEAR NACHES
TO RISE ABOVE FLOOD STAGE BY LATE WEDNESDAY. A FLOOD WATCH HAS BEEN
ISSUED FOR THE NACHES RIVER AT NACHES THROUGH WEDNESDAY. SEE LATEST
PRODUCT FFAPDT/WGUS66 FOR ADDITIONAL DETAILS.
CONDITIONS WILL BECOME DRIER AND MORE STABLE LATE IN THE WEEK.
.SPOTTER INFORMATION STATEMENT...
SPOTTER ACTIVATION MAY BE REQUIRED.
WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER
CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.
GRAPHICAL FORECASTS OF WEATHER HAZARDS OUT TO SEVEN DAYS
ARE DISPLAYED ON THE WORLD WIDE WEB AT:
WWW.WRH.NOAA.GOV/PDT/CURRENTHAZARDS/HWO.HTML
ALL LETTERS IN THE ABOVE URL ARE LOWER CASE...EXCEPT THE H IN
CURRENTHAZARDS.The Pendleton radar (KPDT), 24 km away, was scanning. The volume nearest the first event began at 03:31 UTC.
1 funnel cloud. Local standard time, as filed.
NWS employee observed a funnel cloud that was 3/4 of the way to the ground just northeast of Adams.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Oregon in 2008Every state in 2008This day in weather historyWarnings in Oregon, May 2008
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: 102471.