Alert archive / Oregon / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 43, NWS Pendleton, OR
NWS Pendleton, OR issued this severe thunderstorm warning at Jul 29, 1997, 3:38 PM PDT for Crook County, Jefferson County, Oregon. It was in force for 67 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 29, 1997, 3:38 PM PDT (22:38 UTC)
- Expired
- Jul 29, 1997, 4:45 PM PDT
- In force
- 67 min
- Issued by
- NWS Pendleton, OR
- Area
- Whole counties
Counties Crook County, OR, Jefferson County, OR
The radar
The Pendleton radar (KPDT), 209 km from the middle of the area, began a volume at 22:38 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 12:00Z, 10.6 hours before the alert went out and 186 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
- 895 m above ground
- 0-6 km bulk shear
- 12 kt
- 0-1 km storm-relative helicity
- -32 m²/s²
- 0-3 km storm-relative helicity
- -18 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
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 29, 2:22 PM PDT, 1 hour 16 minutes earlier.
Area forecast discussion, Jul 29, 2:22 PM PDT, 1 hour 16 minutes before
NORTHEAST OREGON/SOUTHEAST WASHINGTON FORECAST DISCUSSION NATIONAL WEATHER SERVICE PENDLETON OR 215 PM PDT TUE JUL 29 1997 CONVECTION ACROSS S CWFA ATTM. STRONGEST STORMS ALONG CLD SHIELD IN SE/SCNTRL ORE. KMAX 88D 1-HR PCPN ESTIMATE 1.3 INCH SRN DESCHUTES CNTY. BELIEVE SOME OF THE ESTIMATE IS HAIL CONTAMINATION BUT WILL CONTINUE TO MONITOR FOR FLASH FLOODING. 12Z MODELS DO NOT DO A GOOD JOB WITH VORT CNTR OVR N CA. ETA CLOSEST OF THE THREE BUT EVEN IT WAS TO FAR N WITH CNTR VALID AT 18Z. SLOWER TIMING OF CIRCULATION IS BEST. VORT CNTR SHOULD FINALLY EJECT TO ID PANHANDLE WED AFTN. WARMER WED BECAUSE OF SUN BUT UNSTABLE AGAIN. ENOUGH RESIUAL MSTR WILL REMAIN E SIDE FOR ANOTHER FUN TS DAY. THU DRYING BUT STILL WK VORT RIPPLES AND SLY FLO FOR MORE CONVECTION E SIDE. EXTDD...L/WV TROF DOESN'T SEEM TO WANT TO MOVE INLAND. FLO OSCILLATES FROM SLY TO SWLY WITH S/WVS IN FLO. PDXWRKSFP LOOKS GOOD. SB PDT 6431 ALW\ 6431 PSC 5221 YKM 4211 .KPDT...VCP21/CSR21...OPERATIONAL. .KPDT...NONE.
The office that day
Everything else NWS Pendleton, OR issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 28, 5:07 PM PDT | Severe Thunderstorm Warning | PDT | Deschutes | 53 min |
| Jul 28, 5:51 PM PDT | Severe Thunderstorm Warning | PDT | Crook | 54 min |
| Jul 29, 3:57 PM PDT | Flash Flood Warning | PDT | Grant, Wheeler | 2 hr |
| Jul 29, 4:19 PM PDT | Flash Flood Warning | PDT | Crook, Jefferson, Wasco, Wheeler | 3 hr |
Nearby
Severe Thunderstorm Warnings in Oregon, 1997Every severe thunderstorm warning in 1997
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.