Alert archive / Oregon / Severe Thunderstorm Warnings in 2004

Severe Thunderstorm Warning 15, NWS Pendleton, OR

June 29, 2004Umatilla County, Oregon

NWS Pendleton, OR issued this severe thunderstorm warning at Jun 29, 2004, 9:47 PM PDT for Umatilla County, Oregon. It was in force for 43 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, 2004, 9:47 PM PDT (04:47 UTC)
Expired
Jun 29, 2004, 10:30 PM PDT
In force
43 min
Issued by
NWS Pendleton, OR
Area
Counties, with a storm outline in the text

County Umatilla County, OR

The radar

The Pendleton radar (KPDT), 14 km from the middle of the area, began a volume at 04:49 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, 2:30 PM PDT, 7 hours 17 minutes earlier.

Area forecast discussion, Jun 29, 2:30 PM PDT, 7 hours 17 minutes before
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Hazardous weather outlook, Jun 29, 5:10 AM PDT, 16 hours 37 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OREGON
510 AM PDT TUE JUN 29 2004

ORZ041>050-WAZ024>030-301200-
NORTH CENTRAL OREGON-CENTRAL OREGON-LOWER COLUMBIA BASIN (OR)-
FOOTHILLS OF THE BLUE MOUNTAINS (OR)-BLUE MOUNTAINS-JOHN DAY BASIN-
OCHOCO-JOHN DAY HIGHLANDS-GRANDE RONDE VALLEY-WALLOWA COUNTY-
EASTERN COLUMBIA RIVER GORGE (WA)-
EAST SLOPES OF THE SOUTHERN CASCADES-KITTITAS VALLEY-YAKIMA VALLEY-
LOWER COLUMBIA BASIN (WA)-FOOTHILLS OF THE BLUE MOUNTAINS (WA)-
NORTHWEST BLUE MOUNTAINS-
510 AM PDT TUE JUN 29 2004

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

.DAY ONE...TODAY AND TONIGHT

FLASH FLOOD WATCH UNTIL 7 PM
     BLUE MOUNTAINS (OR), JOHN DAY BASIN, OCHOCO-JOHN DAY HIGHLANDS,
     GRANDE RONDE VALLEY, WALLOWA COUNTY

HEAVY RAIN ASSOCIATED WITH THUNDERSTORMS
     NORTHWEST BLUE MOUNTAINS (WA), CENTRAL OREGON

SHOWERS AND THUNDERSTORMS WILL REDEVELOP OVER CENTRAL AND EASTERN
OREGON AND SOUTHEAST WASHINGTON TODAY AND THIS EVENING.  SLOW MOVING
THUNDERSTORMS PRODUCING HEAVY RAIN WILL THREATEN THE CENTRAL AND
EASTERN OREGON MOUNTAINS AS WELL AS THE JOHN DAY BASIN AND THE
GRANDE RONDE VALLEY WITH FLASH FLOODING.  PLEASE REFER TO THE LATEST
FLASH FLOOD WATCH PDXFFAPDT WGUS46 KPDT FOR DETAILS.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

HEAVY RAIN ASSOCIATED WITH THUNDERSTORMS WEDNESDAY
          NORTHWEST BLUE MOUNTAINS, CENTRAL OREGON, BLUE MOUNTAINS,
          JOHN DAY BASIN, OCHOCO-JOHN DAY HIGHLANDS, GRANDE RONDE
          VALLEY, WALLOWA COUNTY

THUNDERSTORMS THURSDAY AND FRIDAY
          NORTHWEST BLUE MOUNTAINS, NORTH CENTRAL OREGON, CENTRAL
          OREGON, BLUE MOUNTAINS, JOHN DAY BASIN, OCHOCO-JOHN DAY
          HIGHLANDS, GRANDE RONDE VALLEY, WALLOWA COUNTY

THUNDERSTORMS SATURDAY
          FOOTHILLS OF THE BLUE MOUNTAINS (WA), NORTHWEST BLUE
          MOUNTAINS, NORTH CENTRAL OREGON, CENTRAL OREGON, FOOTHILLS
          OF THE BLUE MOUNTAINS (OR), BLUE MOUNTAINS, JOHN DAY BASIN,
          OCHOCO-JOHN DAY HIGHLANDS, GRANDE RONDE VALLEY, WALLOWA
          COUNTY

ANOTHER ROUND OF SHOWERS AND THUNDERSTORMS CAN BE EXPECTED
WEDNESDAY.  THE MAIN THREAT FROM THUNDERSTORMS WILL BE HEAVY
RAIN...ALTHOUGH STORMS WILL TRACK A LITTLE FASTER THAN WHAT IS
FORECAST FOR TODAY.  THE THREAT OF CONVECTION WILL CONTINUE THURSDAY
THROUGH SATURDAY.  THE REMAINDER OF THE HOLIDAY WEEKEND WILL BE DRY
EXCEPT FOR A SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS OVER THE
CENTRAL AND EASTERN MOUNTAINS.  LOCALLY BREEZY WINDS ARE POSSIBLE ON
JULY 4TH.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE REQUIRED.

WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER
CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.

In the hours before

Local storm report, Jun 29, 4:43 PM PDT, 5 hours 4 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PENDLETON OR
443 PM PDT TUE JUN 29 2004

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

0100 PM     HAIL             15 SE HEPPNER           45.22N 119.30W
06/29/2004  0.50 INCH        MORROW             OR   TRAINED SPOTTER

            REPORTED PEA TO DIME SIZE HAIL WITH HEAVY THUNDERSTORM.

0150 PM     HAIL             4 WSW LA PINE           43.64N 121.57W
06/29/2004  0.25 INCH        DESCHUTES          OR   TRAINED SPOTTER

            PEA SIZE HAIL WITH HEAVY RAIN.

0154 PM     HEAVY RAIN       N HAMPTON               43.67N 120.23W
06/29/2004  1.00 INCH        DESCHUTES          OR   TRAINED SPOTTER

            1/2 TO 1 INCH OF RAINFALL IN THE PAST 30 MINUTES. PEA
            SIZE HAIL ALSO REPORTED.

0200 PM     HAIL             2 NNW LA PINE           43.69N 121.52W
06/29/2004  0.50 INCH        DESCHUTES          OR   TRAINED SPOTTER

            PEA TO DIME SIZE HAIL REPORTED WITH HEAVY THUNDERSTORM.

0324 PM     HAIL             6 ESE ONEIL            44.29N 120.98W
06/29/2004  0.25 INCH        CROOK              OR   TRAINED SPOTTER

            PEA SIZE HAIL WITH LOTS OF LIGHTNING AND POWER OUTAGES.

0327 PM     TSTM WND DMG     1 NNW PRINEVILLE        44.33N 120.85W
06/29/2004                   CROOK              OR   TRAINED SPOTTER

            WIND GUSTS TO 45 MPH DOWNED POWER LINES. HEAVY
            THUNDERSTORM REPORTED WITH LIGHTNING FLASHES EVERY 3 TO 5
            SECONDS.

0333 PM     TSTM WND DMG     PRINEVILLE              44.31N 120.84W
06/29/2004                   CROOK              OR   TRAINED SPOTTER

            GUSTS TO 45 MPH BROKE OFF AN 8 FOOT LONG TREE LIMB.

0334 PM     HEAVY RAIN       1 N PRINEVILLE          44.30N 120.85W
06/29/2004  0.50 INCH        CROOK              OR   TRAINED SPOTTER

            1/2 INCH OF RAIN FELL IN 20 MINUTES. 6 LIGHTNING FLASHES
            PER MINUTE.

0335 PM     NON-TSTM WND DMG 1 N PRINEVILLE          44.30N 120.85W
06/29/2004                   CROOK              OR   TRAINED SPOTTER

            1 TO 2 INCH DIAMETER TREE LIMBS DOWNED.

0335 PM     FLASH FLOOD      1 N BROTHERS            43.81N 120.60W
06/29/2004                   DESCHUTES          OR   TRAINED SPOTTER

            HEAVY THUNDERSTORMS PRODUCED STANDING WATER ON ROADWAYS.
            ESTIMATED 1 INCH OF RAINFALL.

0345 PM     HEAVY RAIN       5 NE POWELL BUTTE       44.29N 120.96W
06/29/2004  0.25 INCH        CROOK              OR   TRAINED SPOTTER

            1/4 INCH OF RAIN IN 8 MINUTES. STILL RAINING AT TIME OF
            REPORT.

0352 PM     FLASH FLOOD      1 N PRINEVILLE          44.29N 120.83W
06/29/2004                   CROOK              OR   TRAINED SPOTTER

            0.60 INCHES OF RAINFALL IN 20 MINUTES. FLOODING OVER
            CURBSIDES INTO LAWNS. NUMEROUS POWER OUTAGES.

0352 PM     FLASH FLOOD      3 ENE PRINEVILLE        44.32N 120.78W
06/29/2004                   CROOK              OR   TRAINED SPOTTER

            RUNNING WATER DOWNHILL.

0400 PM     TSTM WND DMG     1 NNW PRINEVILLE        44.33N 120.85W
06/29/2004                   CROOK              OR   TRAINED SPOTTER

            WIND GUSTS TO 60 MPH DOWNED SMALL TREE BRANCHES. POWER
            OUTAGES REPORTED IN PRINEVILLE.

0402 PM     FLASH FLOOD      4 N PRINEVILLE          44.37N 120.84W
06/29/2004                   CROOK              OR   TRAINED SPOTTER

            ROADS FLOODED IN DOWNTOWN PRINEVILLE. 1/4 INCH HAIL
            NEARLY COVERING GROUND.

0442 PM     HAIL             6 WSW PAULINA           44.08N 120.06W
06/29/2004  1.00 INCH        CROOK              OR   TRAINED SPOTTER

            HAIL TO THE SIZE OF QUARTERS WITH GUSTS TO 40 MPH.

&&

JWM

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 29, 5:04 PM PDTFlash Flood WarningPDTGrant3 hr
Jun 29, 5:17 PM PDTFlash Flood WarningPDTWallowa3 hr
Jun 29, 5:23 PM PDTFlash Flood WarningPDTWheeler97 min
Jun 29, 6:54 PM PDTSevere Thunderstorm WarningPDTMorrow, Wheeler61 min
Jun 29, 7:00 PM PDTFlash Flood WarningPDTMorrow60 min
Jun 29, 7:00 PM PDTFlash Flood WarningPDTWheeler60 min

Nearby

Severe Thunderstorm Warnings in Oregon, 2004Every severe thunderstorm warning in 2004

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.