Severe Thunderstorm Warning 5, NWS Pendleton, OR

Issued

Apr 29, 2003, 9:12 PM PDT (04:12 UTC)

Expired

Apr 29, 2003, 9:30 PM PDT

In force

18 min

Issued by

NWS Pendleton, OR

Area

Counties, with a storm outline in the text

Counties Benton County, WA, Franklin County, WA

The Pendleton radar (KPDT), 71 km from the middle of the area, began a volume at 04:15 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.

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

956 
WUUS56 KPDT 300412
SVRPDT
WAC005-021-300430-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PENDLETON OR
910 PM PDT TUE APR 29 2003

THE NATIONAL WEATHER SERVICE IN PENDLETON HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EAST CENTRAL BENTON COUNTY IN SOUTH CENTRAL WASHINGTON
  SOUTHWESTERN FRANKLIN COUNTY IN SOUTH CENTRAL WASHINGTON

* UNTIL 930 PM PDT

* AT 910 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM OVER RICHLAND AND WEST PASCO...OR ABOUT 3      
  MILES WEST OF PASCO...MOVING NORTH AT 5 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  RURAL SOUTHWESTERN FRANKLIN COUNTY AT 920 PM PDT
  RURAL CENTRAL BENTON COUNTY AT 930 PM PDT

THIS THUNDERSTORM IS PRODUCING GUSTY WINDS...SMALL HAIL...DEADLY 
LIGHTNING...AND VERY HEAVY RAIN. SEVERE THUNDERSTORMS CAN PRODUCE 
TORNADOES WITH LITTLE OR NO ADVANCE WARNING. FOR YOUR PROTECTION 
MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR 
BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE INTO AREAS 
WHERE WATER COVERS THE ROAD.

LAT...LON 4621 11935 4616 11910 4637 11899 4641 11930

$$

NWS Pendleton, OR wrote its last area forecast discussion before this severe thunderstorm warning went out at Apr 29, 8:15 PM PDT, 57 minutes earlier.

NORTHEAST OREGON/SOUTHEAST WASHINGTON FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
815 PM PDT TUE APR 29 2003

CURRENT RADAR IMAGERY BEGINNING TO SHOW SIGNS OF SETTLING DOWN THIS
EVENING. ONE AREA OF CONTINUED CONCERN IS YAKIMA VALLEY EASTWARD TO
THE COLUMBIA BASIN SOUTH OF THE TRI-CITIES WHERE THE ATMOSPHERE
CONINUES TO BE QUITE UNSTABLE. EXPECT THUNDERSTORM ACTIVITY HERE TO
PERSIST THROUGH THE REST OF THE EVENING. THE SOUTHERN END OF THIS
LINE...WHICH EXTENDES INTO THE SOUTHERN BLUE MOUNTAINS AND NORTHERN
GRANT COUNTY IS IN SLIGHTLY MORE STABLE AIR...AND WILL LIKELY
DIMISH. ISOLATED AREAS OF FOG ARE ALSO A POSSIBILITY
OVERNIGHT...PARTICULARLY WHERE THE SKIES HAVE THE OPPORTUNITY TO
CLEAR OUT.  JR

PDT 5321  ALW 5321  PSC 5321  YKM 5321

.KPDT...NONE.

ORZ041>050-WAZ024>030-301300-

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
520 AM PDT TUE APR 29 2003

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

.DAY ONE...
THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW.

A SERIES OF WAVES ROTATING AROUND AN UPPER LOW OVER SOUTHWEST OREGON
WILL BRING SCATTERED SHOWERS TO THE REGION TODAY AND TONIGHT.  THE
AIR MASS REMAINS UNSTABLE...AND ISOLATED THUNDERSTORMS ARE EXPECTED
THIS AFTERNOON.  SOME THUNDERSTORMS WILL PRODUCE HEAVY RAIN...SMALL
HAIL...AND GUSTY WINDS.

.DAYS TWO THROUGH SEVEN...

THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW.

ALTHOUGH THE LOW PRESSURE SYSTEM WILL WEAKEN AS IT MOVES OVER THE
PACIFIC NORTHWEST...IT WILL REMAIN STATIONARY THROUGH THURSDAY.
SCATTERED SHOWERS AND ISOLATED AFTERNOON THUNDERSTORMS WILL CONTINUE
WEDNESDAY.  ANOTHER LOW PRESSURE SYSTEM WILL DROP SOUTHWARD FROM
BRITISH COLUMBIA AND INTO THE PACIFIC NORTHWEST THIS WEEKEND FOR
ANOTHER ROUND OF PRECIPITATION.  DRIER CONDITIONS ARE EXPECTED
MONDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE REQUIRED.

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

Severe Thunderstorm Warnings in Washington, 2003Every severe thunderstorm warning in 2003

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