Alert archive / Oregon / Severe Thunderstorm Warnings in 2008

Severe Thunderstorm Warning 6, NWS Pendleton, OR

June 29, 2008Grant County, Morrow County, Wheeler County, Oregon

NWS Pendleton, OR issued this severe thunderstorm warning at Jun 29, 2008, 4:50 PM PDT for Grant County, Morrow County, Wheeler County, Oregon. It was in force for 55 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Jun 29, 2008, 4:50 PM PDT (23:50 UTC)
Expired
Jun 29, 2008, 5:45 PM PDT
In force
55 min
Issued by
NWS Pendleton, OR
Area
Storm-based polygon

Counties Grant County, OR, Morrow County, OR, Wheeler County, OR

The radar

The Pendleton radar (KPDT), 105 km from the middle of the area, began a volume at 23:52 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, 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 this severe thunderstorm warning went out at Jun 29, 4:25 PM PDT, 25 minutes earlier.

Area forecast discussion, Jun 29, 4:25 PM PDT, 25 minutes before
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Hazardous weather outlook, Jun 29, 2:10 PM PDT, 2 hours 40 minutes before
HAZARDOUS WEATHER OUTLOOK...UPDATED
NATIONAL WEATHER SERVICE PENDLETON OR
210 PM PDT SUN JUN 29 2008

UPDATED FIRE WEATHER WATCH AND RED FLAG WARNING INFORMATION

ORZ041>044-049-050-501>506-WAZ024-026>030-501-502-301415-
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-
210 PM PDT SUN JUN 29 2008

THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL AND NORTHEAST OREGON
AS WELL AS SOUTH CENTRAL AND SOUTHEAST WASHINGTON.

.DAY ONE...REST OF TODAY AND TONIGHT

EXCESSIVE HEAT
     EAST SLOPES OF THE SOUTHERN CASCADES OF WASHINGTON,
     EASTERN COLUMBIA RIVER GORGE, KITTITAS VALLEY, YAKIMA VALLEY,
     LOWER COLUMBIA BASIN, FOOTHILLS OF THE BLUE MOUNTAINS,
     NORTHERN WHEELER AND SOUTHERN GILLIAM COUNTIES, JOHN DAY BASIN

THUNDERSTORMS
     EAST SLOPES OF THE CENTRAL CASCADES OF WASHINGTON, NORTHWEST
     BLUE MOUNTAINS, GRANDE RONDE VALLEY, WALLOWA COUNTY, NORTHERN
     BLUE MOUNTAINS OF OREGON, SOUTHERN BLUE MOUNTAINS OF OREGON,
     JOHN DAY BASIN

RED FLAG WARNING
     EAST SLOPES OF THE SOUTHERN CASCADES OF WASHINGTON, EASTERN
     COLUMBIA RIVER GORGE OF WASHINGTON, LOWER COLUMBIA BASIN OF
     WASHINGTON, FOOTHILLS OF THE BLUE MOUNTAINS OF WASHINGTON,
     EASTERN COLUMBIA RIVER GORGE OF OREGON, NORTH CENTRAL OREGON,
     CENTRAL OREGON, LOWER COLUMBIA BASIN OF OREGON, FOOTHILLS OF
     THE BLUE MOUNTAINS OF OREGON, NORTHERN WHEELER AND SOUTHERN
     GILLIAM COUNTIES, OCHOCO-JOHN DAY HIGHLANDS

A RIDGE OF HIGH PRESSURE WILL CONTINUE TO BRING HOT AND DRY
CONDITIONS...AS THE REGION SEES THE THE HOTTEST TEMPERATURES SO FAR
THIS YEAR. MANY LOCATIONS WILL REACH OR EXCEED 100 DEGREES THIS
AFTERNOON.  PLEASE REFER TO PRODUCT PDXNPWPDT FOR DETAILS ON THE
HEAT ADVISORY.

A WEATHER DISTURBANCE ASSOCIATED WITH A LOW PRESSURE SYSTEM OFF THE
CALIFORNIA COAST WILL MOVE NORTHWARD INTO THE REGION THIS AFTERNOON.
THIS WILL PROVIDE ENOUGH INSTABILITY AND MOISTURE TO DEVELOP
THUNDERSTORMS IN CENTRAL OREGON AND SPREAD NORTHWARD ALONG THE
CASCADES AS WELL AS NORTHEAST OVER THE BLUE MOUNTAINS THIS EVENING.
WITH THE GRASSES AND SHRUBS IN THE LOWER ELEVATIONS BEING
DRY...SCATTERED THUNDERSTORMS FROM THIS AFTERNOON THROUGH TUESDAY
MORNING WILL THREATEN THESE AREAS WITH LIGHTNING-CAUSED FIRES. A RED
FLAG WARNING IS IN EFFECT THIS AFTERNOON THROUGH TUESDAY MORNING FOR
NORTH CENTRAL OREGON, CENTRAL OREGON, AND THE OCHOCO-JOHN DAY
HIGHLANDS. A RED FLAG WARNING IS IN EFFECT TONIGHT THROUGH TUESDAY
MORNING FOR THE SOUTH CENTRAL WASHINGTON.  PLEASE REFER TO FIRE
WEATHER PRODUCT PDXRFWPDT FOR MORE DETAILS. CONTACT YOUR LOCAL
FOREST OR LAND MANAGEMENT AGENCY FOR CURRENT FIRE DANGER CONDITIONS
IN YOUR AREA.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY

STRONG THUNDERSTORMS MONDAY
     NORTHWEST BLUE MOUNTAINS, NORTH CENTRAL OREGON, CENTRAL
     OREGON, GRANDE RONDE VALLEY, WALLOWA COUNTY, NORTHERN BLUE
     MOUNTAINS OF OREGON, SOUTHERN BLUE MOUNTAINS OF OREGON,
     NORTHERN WHEELER AND SOUTHERN GILLIAM COUNTIES, JOHN DAY
     BASIN, OCHOCO-JOHN DAY HIGHLANDS

EXCESSIVE HEAT MONDAY
     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, EASTERN COLUMBIA RIVER GORGE OF
     OREGON, LOWER COLUMBIA BASIN OF OREGON, FOOTHILLS OF THE BLUE
     MOUNTAINS OF OREGON

RED FLAG WARNING MONDAY
     EAST SLOPES OF THE SOUTHERN CASCADES OF WASHINGTON, EASTERN
     COLUMBIA RIVER GORGE OF WASHINGTON, LOWER COLUMBIA BASIN OF
     WASHINGTON, FOOTHILLS OF THE BLUE MOUNTAINS OF WASHINGTON,
     EASTERN COLUMBIA RIVER GORGE OF OREGON, NORTH CENTRAL OREGON,
     CENTRAL OREGON, LOWER COLUMBIA BASIN OF OREGON, FOOTHILLS OF
     THE BLUE MOUNTAINS OF OREGON, NORTHERN WHEELER AND SOUTHERN
     GILLIAM COUNTIES, OCHOCO-JOHN DAY HIGHLANDS

FIRE WEATHER WATCH MONDAY
     BAKER COUNTY, LOWER COLUMBIA BASIN OF WASHINGTON

THUNDERSTORMS TUESDAY THROUGH THURSDAY
     NORTHWEST BLUE MOUNTAINS, CENTRAL OREGON, LOWER COLUMBIA BASIN
     OF OREGON, GRANDE RONDE VALLEY, WALLOWA COUNTY, NORTHERN BLUE
     MOUNTAINS OF OREGON, SOUTHERN BLUE MOUNTAINS OF OREGON,
     NORTHERN WHEELER AND SOUTHERN GILLIAM COUNTIES, JOHN DAY
     BASIN, OCHOCO-JOHN DAY HIGHLANDS

THE RIDGE OF HIGH PRESSURE WILL KEEP CONDITIONS HOT AND DRY THROUGH
MONDAY. THE COLUMBIA BASIN AND SURROUNDING VALLEYS WILL CONTINUE TO
SEE HIGH TEMPERATURES EXCEEDING 100 DEGREES. PLEASE REFER TO
PDXNPWPDT FOR MORE DETAILS ON THE HEAT ADVISORY.

THE LOW PRESSURE SYSTEM OFF THE CALIFORNIA COAST WILL LIFT NORTHWARD
AND SEND ANOTHER...STRONGER DISTURBANCE ACROSS THE REGION MONDAY
AFTERNOON. WITH UNSTABLE CONDITIONS ACROSS THE AREA...THUNDERSTORMS
ARE POSSIBLE ACROSS THE REGION. A MARINE PUSH LATE ON MONDAY WILL
ADD FURTHER LIFT FOR STRONGER STORMS TO DEVELOP ACROSS THE MOUNTAINS
OF NORTHEAST OREGON AND SOUTHEAST WASHINGTON. THESE STORMS MAY BE
CAPABLE OF STRONG GUSTY WINDS AND LARGE HAIL. THERE IS ALSO A
POTENTIAL FOR LARGE FIRE GROWTH FOR THE AREAS COVERED UNDER FIRE
WEATHER WATCHES AND RED FLAG WARNINGS. SEE LATEST PDXRFWPDT FOR
DETAILS ON FIRE WEATHER WATCHES AND WARNINGS DUE TO LIGHTNING ON
MONDAY.

WEATHER DISTURBANCES WILL CONTINUE TO BRING UNSTABLE CONDITIONS TO
THE MOUNTAINS OF NORTHEAST OREGON AND SOUTHEAST WASHINGTON...WITH A
CHANCE OF THUNDERSTORMS EACH AFTERNOON THROUGH THE END OF THE WEEK.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL BE LIKELY OVER THE NEXT SEVERAL DAYS.

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.

In the hours before

Local storm report, Jun 29, 2:50 PM PDT, 2 hours before
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Local storm report, Jun 29, 3:01 PM PDT, 1 hour 49 minutes before
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Local storm report, Jun 29, 3:04 PM PDT, 1 hour 46 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PENDLETON OR
304 PM PDT SUN JUN 29 2008

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0300 PM     HAIL             6 NW TUMALO             44.22N 121.40W
06/29/2008  E1.00 INCH       DESCHUTES          OR   TRAINED SPOTTER

            HAIL RANGING IN SIZE BETWEEN 3/4 AND ONE INCH IN
            DIAMETER. BEGINNING TO LIGHTEN UP IN INTENSITY.

&&

AA
Local storm report, Jun 29, 3:18 PM PDT, 1 hour 32 minutes before
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Local storm report, Jun 29, 4:02 PM PDT, 48 minutes before
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Local storm report, Jun 29, 4:19 PM PDT, 31 minutes before
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The office that day

Everything else NWS Pendleton, OR issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 29, 9:10 AM PDTFire Weather WatchPDT5 hr
Jun 29, 9:10 AM PDTRed Flag WarningPDT48 hr
Jun 29, 2:34 PM PDTFire Weather WatchPDT19 hr
Jun 29, 2:47 PM PDTSevere Thunderstorm WarningPDTDeschutes, Jefferson58 min
Jun 29, 3:06 PM PDTSevere Thunderstorm WarningPDTJefferson54 min
Jun 29, 3:46 PM PDTSevere Thunderstorm WarningPDTSherman, Wasco59 min

Nearby

Severe Thunderstorm Warnings in Oregon, 2008Every severe thunderstorm warning in 2008

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive.