Alert archive / Oregon / Severe Thunderstorm Warnings in 2002
Severe Thunderstorm Warning 20, NWS Pendleton, OR
NWS Pendleton, OR issued this severe thunderstorm warning at Jul 8, 2002, 2:16 AM PDT for Wallowa County, Oregon. It was in force for 44 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
- Jul 8, 2002, 2:16 AM PDT (09:16 UTC)
- Expired
- Jul 8, 2002, 3:00 AM PDT
- In force
- 44 min
- Issued by
- NWS Pendleton, OR
- Area
- Counties, with a storm outline in the text
County Wallowa County, OR
The radar
The Pendleton radar (KPDT), 131 km from the middle of the area, began a volume at 09:20 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
Boise Airport, ID (KBOI), launched 00:00Z, 9.3 hours before the alert went out and 237 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
- 796 J/kg
- Mixed-layer CIN
- -90 J/kg
- Mixed-layer LCL
- 3335 m above ground
- 0-6 km bulk shear
- 27 kt
- 0-1 km storm-relative helicity
- 53 m²/s²
- 0-3 km storm-relative helicity
- 60 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
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 Jul 7, 8:30 PM PDT, 5 hours 46 minutes earlier.
Area forecast discussion, Jul 7, 8:30 PM PDT, 5 hours 46 minutes before
NORTHEAST OREGON/SOUTHEAST WASHINGTON FORECAST DISCUSSION NATIONAL WEATHER SERVICE PENDLETON OR 830 PM PDT SUN JUL 7 2002 A LOW PRESSURE SYSTEM IS CROSSING OVER THE CASCADES. THE SYSTEM IS LIFTING THE WARM MOIST LOW LEVEL AIR EAST OF THE CASCADES RESULTING IN SCATTERED THUNDERSTORMS. SEVERAL THUNDERSTORMS HAVE BEEN SEVERE WITH WITH .75 INCH HAIL AND WIND GUSTS IN EXCESS OF 50 MPH. THE STRONGEST WIND GUST REPORTED SO FAR IS 76 MPH AT THE PASCO AIRPORT. THESE WINDS HAVE REDUCED VISIBILITIES BRIEFLY TO AS LOW AS ONE QUARTER MILE IN THE COLUMBIA BASIN AND ALONG THE FOOTHILLS OF THE BLUES. THE FIRST BAND OF THUNDERSTORMS HAS MOVED INTO THE NORTHERN PORTION OF THE COLUMBIA BASIN. HOWEVER...A SECOND BAND OVER CENTRAL OREGON IS SHOWING SIGNS OF INCREASING IN INTENSITY AS IT MOVES NORTH THIS EVENING. PDT 3200 ALW 3200 PSC 3000 YKM 3000 KPDT...VCP21/CSR21...OPERATIONAL. .KPDT...NONE
In the hours before
Local storm report, Jul 7, 11:42 PM PDT, 2 hours 34 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PENDLETON OREGON
1142 PM PDT SUN JUL 07 2002
TIME(PDT) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0510 PM ALFALFA OR .75 INCH HAIL
07/07/02 DESCHUTES REPORTED BY STORM
SPOTTER.
0525 PM POWELL BUTTE OR .75 INCH HAIL
07/07/02 CROOK REPORTED BY STORM
SPOTTER.
0540 PM PRINEVILLE OR LIGHTNING
07/07/02 CROOK REPORTED BY STORM
SPOTTER.POWER AND PHONE SERVICE LOST DUE TO LIGHTNING AND WIND GUSTS TO 40 MPH.Local storm report, Jul 7, 11:42 PM PDT, 2 hours 34 minutes before
PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE PENDLETON OREGON
1142 PM PDT SUN JUL 07 2002
TIME(PDT) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0510 PM ALFALFA OR .75 INCH HAIL
07/07/02 DESCHUTES REPORTED BY STORM
SPOTTER.
0525 PM POWELL BUTTE OR .75 INCH HAIL
07/07/02 CROOK REPORTED BY STORM
SPOTTER.
0540 PM PRINEVILLE OR LIGHTNING
07/07/02 CROOK REPORTED BY STORM
SPOTTER. POWER AND PHONE
SERVICE LOST DUE TO
LIGHTNING AND WIND GUSTS
TO 40 MPH.Local storm report, Jul 8, 1:49 AM PDT, 27 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PENDLETON OREGON
149 AM PDT MON JUL 08 2002
TIME(PDT) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0145 AM ENTERPRISE OR .75 INCH HAIL
07/08/02 WALLOWA REPORTED BY STORM
SPOTTER.The office that day
Everything else NWS Pendleton, OR issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 7, 5:04 PM PDT | Severe Thunderstorm Warning | PDT | Union | 56 min |
| Jul 7, 5:27 PM PDT | Severe Thunderstorm Warning | PDT | Crook, Jefferson | 33 min |
| Jul 7, 6:02 PM PDT | Severe Thunderstorm Warning | PDT | Umatilla, Union | 43 min |
| Jul 7, 6:03 PM PDT | Severe Thunderstorm Warning | PDT | Jefferson, Wasco | 27 min |
| Jul 7, 6:28 PM PDT | Severe Thunderstorm Warning | PDT | Gilliam, Sherman | 47 min |
| Jul 7, 6:31 PM PDT | Severe Thunderstorm Warning | PDT | Umatilla, Union | 44 min |
| Jul 7, 8:52 PM PDT | Severe Thunderstorm Warning | PDT | Morrow | 28 min |
| Jul 7, 10:08 PM PDT | Severe Thunderstorm Warning | PDT | Union | 52 min |
| Jul 7, 10:44 PM PDT | Severe Thunderstorm Warning | PDT | Union | 46 min |
| Jul 7, 11:21 PM PDT | Severe Thunderstorm Warning | PDT | Wallowa | 69 min |
| Jul 8, 1:52 AM PDT | Severe Thunderstorm Warning | PDT | Wallowa | 23 min |
| Jul 7, 7:11 PM PDT | Severe Thunderstorm Warning | PDT | Benton, Franklin | 49 min |
| Jul 7, 7:52 PM PDT | Severe Thunderstorm Warning | PDT | Franklin | 38 min |
| Jul 7, 9:04 PM PDT | Severe Thunderstorm Warning | PDT | Benton | 41 min |
| Jul 7, 9:40 PM PDT | Severe Thunderstorm Warning | PDT | Yakima | 50 min |
| Jul 7, 9:57 PM PDT | Severe Thunderstorm Warning | PDT | Benton, Franklin | 48 min |
Nearby
Severe Thunderstorm Warnings in Oregon, 2002Every severe thunderstorm warning in 2002
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.