An upper level low pressure area over southern Oregon brought abundant moisture and unstable conditions.
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.
An upper level low pressure area over southern Oregon brought abundant moisture and unstable conditions.
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 Jun 13, 1:30 PM PST, 2 hours 5 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE PENDLETON OR 230 PM PDT SAT JUN 13 2009 .SHORT TERM...TONIGHT THROUGH TUESDAY...AN UPPER LEVEL LOW OVER OREGON WILL KEEP A MOIST AND UNSTABLE AIR MASS OVER THE FORECAST AREA FOR SCATTERED TO NUMEROUS SHOWERS AND SCATTERED THUNDERSTORMS OVER HIGHER TERRAIN. AN UPPER LEVEL SHORT IS ROUNDING THE BASE OF THE LOW AND WILL ROTATE AROUND THE LOW AND MOVE NORTH INTO SOUTHERN OREGON THIS EVENING PROVIDING DYNAMIC LIFT FOR THUNDERSTORM ACTIVITY. THE FLOW ALOFT ON THE EAST SIDE OF THE LOW IS FROM THE SOUTHEAST TO SOUTH SO THUNDERSTORMS SHOULD MOVE TO THE NORTH TO NORTHWEST THE REMAINDER OF THIS AFTERNOON AND THIS EVENING. PW VALUES UP TO AROUND ONE INCH WILL PROVIDE THE POTENTIAL FOR HEAVY RAIN OVER MOUNTAINS WITH THE STRONGER THUNDERSTORMS. MID LEVEL STEERING CURRENTS WILL BE LIGHT SO THUNDERSTORMS WILL BE SLOW MOVING...WHICH WILL INCREASE THE TENDENCY FOR LOCALLY HEAVY RAIN OVER MOUNTAINS ASSOCIATED WITH THUNDERSTORMS. SOME THUNDERSTORMS MAY PRODUCE SMALL HAIL...BUT VERTICAL WIND SHEAR WILL BE RELATIVELY LIGHT SO CONDITIONS ARE NOT FAVORABLE FOR THUNDERSTORMS DEVELOPING ORGANIZED AND SUSTAINED UPDRAFTS FOR LARGE HAIL. THE LOW OPENS UP TO A TROUGH ON SUNDAY AND THEN LINGERS OVER THE REGION THROUGH MONDAY. A STRONGER UPPER TROUGH DIVES SOUTHWARD INTO CALIFORNIA MONDAY NIGHT AND TUESDAY KEEPING THE FORECAST AREA IN A WESTERLY FLOW ALOFT. POLAN && .LONG TERM...TUESDAY NIGHT THROUGH SATURDAY. A WEAK SHORT WAVE MOVES THROUGH IN THE WESTERLY FLOW ALOFT TUESDAY NIGHT. THIS COULD BRING A FEW SHOWERS MAINLY TO THE MOUNTAINS. THIS WESTERLY FLOW CONTINUES WEDNESDAY AND THURSDAY WITH PARTLY CLOUDY SKIES AND A FEW SHOWERS OVER THE MOUNTAINS. ANOTHER LOW APPROACHING THE WEST COAST WILL TURN THE UPPER FLOW A LITTLE MORE SOUTHWESTERLY FRIDAY AND SATURDAY. THIS WILL GIVE A BETTER CHANCE OF THUNDERSTORMS OVER THE EASTERN MOUNTAINS. HIGH TEMPERATURES THROUGH THE EXTENDED PERIOD WILL BE IN THE 70S TO MID 80S. && .AVIATION...00Z TAFS. RADAR SHOWING SCATTERED SHOWERS AND THUNDERSTORMS DEVELOPING ACROSS THE AREA THIS AFTERNOON. THESE WILL CONTINUE THROUGH THE EVENING THEN DIMINISH OVERNIGHT. MOVEMENT OF THE STORMS IS TOWARD THE NORTH NORTHWEST. CEILINGS COULD BRIEFLY DROP TO 030-050 IN HEAVIER RAIN...OTHERWISE CEILINGS WILL BE 060-120. SURFACE WINDS 5-15 KT...EXCEPT STRONGER WINDS 10-25 KT AT DLS THROUGH THE EVENING. SURFACE WINDS COULD INCREASE TO 15-30 KT IN VICINITY OF THUNDERSTORMS. A SIMILAR PATTERN IS EXPECTED FOR SUNDAY WITH SHOWERS AND THUNDERSTORMS DEVELOPING AGAIN. 94 && .PRELIMINARY POINT TEMPS/POPS... PDT 60 78 56 83 / 40 40 30 10 ALW 61 78 59 80 / 40 40 30 10 PSC 64 84 59 88 / 30 30 20 0 YKM 58 83 57 87 / 30 10 10 0 HRI 61 80 57 86 / 40 20 10 0 ELN 57 80 56 86 / 30 20 20 0 RDM 49 75 45 80 / 60 20 20 20 LGD 54 68 52 73 / 60 60 60 30 GCD 50 75 50 77 / 70 60 60 30 DLS 59 79 55 85 / 40 10 10 0 && .PDT WATCHES/WARNINGS/ADVISORIES... OR...NONE. WA...NONE. && THREAT INDEX SUNDAY : YELLOW MONDAY : GREEN TUESDAY : GREEN GREEN: NONE OR LIMITED NEED FOR WATCHES, WARNINGS, OR ADVISORIES. YELLOW: A FEW WATCHES, WARNINGS, OR ADVISORIES POSSIBLE OR IN EFFECT. RED: NUMEROUS WATCHES, WARNINGS, OR ADVISORIES POSSIBLE OR IN EFFECT. FOR ADDITIONAL WEATHER INFORMATION, CHECK OUR WEB SITE AT... WWW.WEATHER.GOV/PENDLETON 99/94/94
HAZARDOUS WEATHER OUTLOOK...UPDATED
NATIONAL WEATHER SERVICE PENDLETON OR
259 PM PDT SAT JUN 13 2009
UPDATED DAYS TWO THROUGH SEVEN DISCUSSION FOR THUNDERSTORM COVERAGE
ON SUNDAY
ORZ041>044-049-050-501>506-WAZ024-026>030-501-502-141300-
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-
259 PM PDT SAT JUN 13 2009
THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL AND NORTHEAST OREGON
AS WELL AS SOUTH CENTRAL AND SOUTHEAST WASHINGTON.
.DAY ONE...THIS AFTERNOON AND TONIGHT
HEAVY RAIN
EAST SLOPES OF THE CENTRAL CASCADES OF WASHINGTON, EAST SLOPES
OF THE SOUTHERN CASCADES OF WASHINGTON, EASTERN COLUMBIA RIVER
GORGE OF WASHINGTON, FOOTHILLS OF THE BLUE MOUNTAINS OF
WASHINGTON, NORTHWEST BLUE MOUNTAINS, EASTERN COLUMBIA RIVER
GORGE OF OREGON, NORTH CENTRAL OREGON, CENTRAL 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
THUNDERSTORMS
KITTITAS VALLEY, YAKIMA VALLEY, LOWER COLUMBIA BASIN OF
WASHINGTON, LOWER COLUMBIA BASIN OF OREGON, WALLOWA COUNTY
A PERSISTENT MOIST AND UNSTABLE FLOW ALOFT WILL RESULT IN THE
DEVELOPMENT OF SHOWERS WITH AFTERNOON AND EVENING THUNDERSTORMS.
SOME OF THE STORMS MAY PRODUCE LOCALLY HEAVY RAINFALL AMOUNTS WHICH
MAY LEAD TO RISING WATER LEVELS ON SMALL RIVERS AND STREAMS.
ADDITIONALLY, URBAN FLOODING IS POSSIBLE, PARTICULARLY ACROSS
CENTRAL OREGON. PERSONS LIVING OR TRAVELING NEAR RIVERS AND STREAMS
ARE URGED TO KEEP ALERT TO THE LATEST WEATHER STATEMENTS FROM THE
NATIONAL WEATHER SERVICE AND FOR POSSIBLE RAPID RISES OF WATER
LEVELS ACROSS ROADWAYS, UNDERPASSES, AND DRY STREAM BEDS.
.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY
THUNDERSTORMS SUNDAY
EAST SLOPES OF THE CENTRAL CASCADES OF WASHINGTON, EAST SLOPES
OF THE SOUTHERN CASCADES OF WASHINGTON, FOOTHILLS OF THE BLUE
MOUNTAINS OF WASHINGTON, NORTHWEST BLUE MOUNTAINS, CENTRAL
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, KITTITAS VALLEY, LOWER COLUMBIA BASIN OF WASHINGTON
THUNDERSTORMS MONDAY
NORTHWEST BLUE MOUNTAINS, GRANDE RONDE VALLEY, WALLOWA COUNTY,
NORTHERN BLUE MOUNTAINS OF OREGON, SOUTHERN BLUE MOUNTAINS OF
OREGON, JOHN DAY BASIN, OCHOCO-JOHN DAY HIGHLANDS
THUNDERSTORMS TUESDAY
GRANDE RONDE VALLEY, WALLOWA COUNTY
THUNDERSTORMS WILL CONTINUE TO DEVELOP EACH AFTERNOON AND EVENING
THROUGH TUESDAY WITH THE MOST SIGNIFICANT THREAT GRADUALLY MOVING
EASTWARD EACH DAY. STORMS WILL CONTINUE TO MOVE SLOWLY WITH HEAVY
RAINFALL AND SMALL HAIL BEING THE PRIMARY THREATS.
.SPOTTER INFORMATION STATEMENT...
SPOTTER ACTIVATION WILL BE LIKELY FOR THUNDERSTORMS AND POSSIBLE HEAVY
RAIN.
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.PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PENDLETON OR
354 PM PDT SAT JUN 13 2009
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0332 PM HAIL 3 S CLE ELUM 47.16N 120.93W
06/13/2009 M0.25 INCH KITTITAS WA TRAINED SPOTTER
VERY HEAVY RAIN STARTED AROUND 5 MINUTES AGO...ALSO 3/8
INCH HAIL REPORTED. KI-18.
0350 PM HEAVY RAIN 1 SE ELLENSBURG 46.99N 120.53W
06/13/2009 M0.79 INCH KITTITAS WA TRAINED SPOTTER
VERY HEAVY RAIN PRODUCED 0.79 INCHES IN 10 MINUTES. ALSO
RECEIVED 1/4 INCH HAIL MIXED WITH RAIN. KI-502.
&&
AAPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PENDLETON OR
405 PM PDT SAT JUN 13 2009
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0400 PM HEAVY RAIN 1 WNW CLE ELUM 47.20N 120.94W
06/13/2009 M1.40 INCH KITTITAS WA TRAINED SPOTTER
THUNDERSTORM WITH VERY HEAVY RAIN AND FREQUENT
LIGHTNING...PEA-SIZED HAIL. MEASURED 1.40 INCHES RAIN
WITHIN HALF HOUR. NO FLOODING IN VICINITY OBSERVED.
KI-507.
&&
AAPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PENDLETON OR
431 PM PDT SAT JUN 13 2009
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0425 PM HEAVY RAIN CLE ELUM 47.19N 120.93W
06/13/2009 U0.00 INCH KITTITAS WA PUBLIC
PONDING ALONG INTERSTATE 90 AT EXIT 84/85. STAFFORD
STREET HAD A WASHOUT AND A SMALL MUDSLIDE.
&&
AAThe Pendleton radar (KPDT), 34 km away, was scanning. The volume nearest the first event began at 23:35 UTC.
1 heavy rain, 1 funnel cloud. Local standard time, as filed.
In 15 minutes, 0.75 inch of rainfall and small hail fell which produced minor flooding over the road.
Funnel cloud was 1/3 of the distance from cloud to ground and lasted for 45 seconds.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Oregon in 2009Every state in 2009This day in weather historyWarnings in Oregon, June 2009
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: 164992, 164990.