Alert archive / Oregon / Severe Thunderstorm Warnings in 2000
Severe Thunderstorm Warning 9, NWS Pendleton, OR
NWS Pendleton, OR issued this severe thunderstorm warning at May 15, 2000, 6:47 PM PDT for Wheeler County, Oregon. It was in force for 48 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
- May 15, 2000, 6:47 PM PDT (01:47 UTC)
- Expired
- May 15, 2000, 7:35 PM PDT
- In force
- 48 min
- Issued by
- NWS Pendleton, OR
- Area
- Whole counties
County Wheeler County, OR
The radar
The Pendleton radar (KPDT), 141 km from the middle of the area, began a volume at 01:47 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.
The nearest sounding before it
Salem/Mcnary, OR (KSLE), launched 00:00Z, 1.8 hours before the alert went out and 235 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1579 m above ground
- 0-6 km bulk shear
- 24 kt
- 0-1 km storm-relative helicity
- -17 m²/s²
- 0-3 km storm-relative helicity
- 78 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
737 WUUS56 KPDT 160147 SVRPDT ORC069-160235- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE PENDLETON OR 647 PM PDT MON MAY 15 2000 THE NATIONAL WEATHER SERVICE IN PENDLETON HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... NORTHERN WHEELER IN CENTRAL OREGON * UNTIL 735 PM PDT * AT 646 PM PDT... DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 12 MILES SOUTHEAST OF FOSSIL OR 5 MILES NORTHWEST OF SERVICE CREEK... MOVING NORTHWEST AT 15 MPH. LARGE HAIL IS INDICATED WITH THIS STORM. THIS STORM IS EXPECTED TO REMAIN IN RURAL AREAS. THIS IS A DANGEROUS STORM STAY INDOORS AWAY FROM WINDOWS. DI/MJB
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 May 15, 2:30 PM PDT, 4 hours 17 minutes earlier.
Area forecast discussion, May 15, 2:30 PM PDT, 4 hours 17 minutes before
NORTHEAST OREGON/SOUTHEAST WASHINGTON FORECAST DISCUSSION NATIONAL WEATHER SERVICE PENDLETON OR 230 PM PDT MON MAY 15 2000 MAIN CONCERN IS EVENING THUNDERSTORMS. ATMOSPHERE UNSTABLE WITH LIFT INDEX NEAR -4...CAPE 800-1000 AND COOLING ALOFT WITH 500 MB TEMPS NEAR -22C. HOWEVER...MOISTURE CONVERGENCE CENTERED TO OUR SOUTH MAY LIMIT AVAILABLE MOISTURE AND UPPER JET HAS MOVED TO OUR EAST DECREASING UPPER LEVEL DYNAMICS. WEAK IMPULSES ROTATING AROUND UPPER LOW CURRENTLY CENTERED 38N/127W WILL HELP TRIGGER THUNDERSTORM DEVELOPMENT THROUGH THE EVENING. EXPECTED SLOW MOVEMENT OF STORMS MAY ALLOW FOR HIGHER PRECIPITATION AMOUNTS THAN WOULD NORMALLY BE EXPECTED. THUNDERSTORMS WILL DIE OUT WITH SUNDOWN. THEN...UPPER LOW WILL MOVE SLOWLY EASTWARD AND TRACK ACROSS CENTRAL CALIFORNIA TONIGHT...THEN NORTHEAST OVER NEVADA INTO SOUTHEAST IDAHO FOR TUEADAY. WRAP AROUND CLOUDS WILL AFFECT THE EASTERN PART OF THE FORECAST AREA ON TUESDAY WITH SOME LINGER SHOWERS POSSIBLE EXTREME EAST. RIDGING OVER THE WESTERN SECTION WILL PROVIDE DRY CONDITIONS. RIDGE TO DOMINATE WEATHER PATTERN ON WEDNESDAY THROUGHOUT AREA. EXTENDED...RIDGE WILL MAINTAIN CONTROL OVER REGION THROUGH FRIDAY WITH FLOW BECOMING MORE ZONAL ON SATURDAY. MINOR DISTURBANCE MOVING THROUGH UPPER FLOW WILL GENERATE OCCASIONAL CLOUDS BUT CONDITIONS TO REMAIN DRY THROUGH PERIOD. MJB. PDT 4100 ALW 4100 PSC 4100 YKM 4100 .KPDT...WSR-88D...VCP21/CSR21...OPERATIONAL. .KPDT...NONE.
In the hours before
Local storm report, May 15, 5:24 PM PDT, 1 hour 23 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PENDLETON OREGON
524 PM PDT MON MAY 15 2000
TIME(PST) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0415 PM UNION OR .75 INCH HAIL
05/15/00 UNION REPORTED BY STORM
SPOTTER. PENNY-SIZED
HAIL REPORTED. (U=NION-2H)Local storm report, May 15, 6:19 PM PDT, 28 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PENDLETON OREGON
619 PM PDT MON MAY 15 2000
TIME(PDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0545 PM 1-2 N ZILLAH WA TORNADO
05/15/00 YAKIMA EVENT DURATION 10-15
MINUTES. TORNADO REPORTED ON THE GROUND NORTH OF ZILLAH BY LAW ENFORCEMENT OFFICIAL. NO KNOWN DAMAGE AT THIS TIME.Local storm report, May 15, 6:19 PM PDT, 28 minutes before
PRELIMINARY LOCAL STORM REPORT...COR
NATIONAL WEATHER SERVICE PENDLETON OREGON
619 PM PDT MON MAY 15 2000
TIME(PDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0545 PM 1-2 N ZILLAH WA TORNADO
05/15/00 YAKIMA EVENT DURATION 10-15
MINUTES. TORNADO REPORTED
ON THE GROUND BY LAW
ENFORCEMENT JUST NORTH OF
ZILLAH. NO DAMAGE KNOWN
AT THIS TIME.The office that day
Everything else NWS Pendleton, OR issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 15, 5:11 PM PDT | Severe Thunderstorm Warning | PDT | Union | 49 min |
| May 15, 5:45 PM PDT | Severe Thunderstorm Warning | PDT | Wheeler | 65 min |
Nearby
Severe Thunderstorm Warnings in Oregon, 2000Every severe thunderstorm warning in 2000
Sources
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.