Alert archive / Oregon / Flash Flood Warnings in 1997
Flash Flood Warning 32, NWS Pendleton, OR
NWS Pendleton, OR issued this flash flood warning at May 31, 1997, 8:41 AM PDT for Crook County, Jefferson County, Oregon. It was in force for 2 hr. 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 31, 1997, 8:41 AM PDT (15:41 UTC)
- Expired
- May 31, 1997, 10:45 AM PDT
- In force
- 2 hr
- 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 15:45 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, 3.7 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
- 295 J/kg
- Mixed-layer CIN
- -9 J/kg
- Mixed-layer LCL
- 635 m above ground
- 0-6 km bulk shear
- 61 kt
- 0-1 km storm-relative helicity
- 65 m²/s²
- 0-3 km storm-relative helicity
- 126 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 0.9
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KPDT 311543 FFWPDT ORC013-031-311745- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE PENDLETON OR 841 AM PDT SAT MAY 31 1997 THE NATIONAL WEATHER SERVICE IN PENDLETON HAS ISSUED A FLASH FLOOD WARNING EFFECTIVE UNTIL 1045 AM PDT FOR PEOPLE IN THE FOLLOWING LOCATION... IN CENTRAL OREGON ...NORTHWESTERN CROOK COUNTY AND EASTERN JEFFERNON COUNTY A THUNDERSTORM PRODUCING HEAVY RAIN IS MOVING THROUGH NORTHWEST CROOK COUNTY. WEATHER SPOTTERS IN PRINEVILLE REPORTED HEAVY RAIN IN A SHORT PERIOD OF TIME. THERE HAS ALSO BEEN REPORTS OF PEA SIZE HAIL AND FREQUENT LIGHTNING. STREETS WERE REPORTED COVERED WITH WATER IN PRINEVILLE. THE THUNDERSTORM PRODUCING THIS HEAVY RAIN WILL MOVE INTO EASTERN JEFFERSON COUNTY AROUND 900 AM. A FLASH FLOOD WARNING MEANS THAT FLOODING IS OCCURRING OR IS IMMINENT. MOST FLASH FLOOD DEATHS OCCUR IN AUTOMOBILES. DO NOT ATTEMPT TO CROSS BRIDGES...DIPS...OR LOW SPOTS IF WATER COVERS THE ROADWAY. NEVER TRY TO CROSS A FLOWING STREAM...EVEN A SMALL ONE...ON FOOT. TO ESCAPE RISING WATER MOVE UP TO HIGHER GROUND. SOLOMON &
What forecasters said that day
The local office's own words before this flash flood 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 flash flood warning went out at May 31, 8:31 AM PDT, 10 minutes earlier.
Area forecast discussion, May 31, 8:31 AM PDT, 10 minutes before
NORTHEAST OREGON/SOUTHEAST WASHINGTON FORECAST DISCUSSION NATIONAL WEATHER SERVICE PENDLETON OREGON 830 AM PDT SAT MAY 31 1997 OBSERVATION OF DVLPG TCU TO W OF KPDT INDCTS SLGT ROTATION IN LYR ABV LCL. TOPS OF TCU ARE BEING SHEARED OFF. CROOK COUNTY SPOTTER RPRT JUST RCVD OF FLASH FLOODING IN PROGRESS. LITTLE TIME TO REVIEW NEW 12Z MDLS. BUSY CORD WITH PDX/SEA AND CALLING IN EXTRA STAFF IN ANTICIPATION OF STG TSTMS TDA. NXT SCHEDULED ISSUANCEv OF AFD AT 230 PM. POLAN PDT 6311 ALW 6311 PSC 6211 YKM 6211 .KPDT...VCP21/CSR21...OPERATIONAL.
The office that day
Everything else NWS Pendleton, OR issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 30, 10:20 PM PDT | Severe Thunderstorm Warning | PDT | Union | 40 min |
| May 31, 12:27 AM PDT | Severe Thunderstorm Warning | PDT | Crook, Deschutes, Jefferson | 63 min |
| May 31, 12:55 AM PDT | Severe Thunderstorm Warning | PDT | Wasco | 65 min |
| May 31, 1:35 AM PDT | Severe Thunderstorm Warning | PDT | Gilliam, Sherman | 55 min |
| May 31, 2:26 AM PDT | Flash Flood Warning | PDT | Morrow | 64 min |
| May 31, 2:26 AM PDT | Severe Thunderstorm Warning | PDT | Morrow | 64 min |
| May 31, 3:05 AM PDT | Flash Flood Warning | PDT | Umatilla | 85 min |
| May 31, 3:05 AM PDT | Severe Thunderstorm Warning | PDT | Umatilla | 85 min |
| May 31, 9:10 AM PDT | Severe Thunderstorm Warning | PDT | Gilliam, Sherman, Wasco | 65 min |
| May 31, 9:10 AM PDT | Severe Thunderstorm Warning | PDT | Jefferson | 65 min |
| May 31, 9:25 AM PDT | Severe Thunderstorm Warning | PDT | Gilliam, Morrow | 65 min |
| May 31, 9:25 AM PDT | Severe Thunderstorm Warning | PDT | Sherman | 65 min |
| May 31, 9:39 AM PDT | Severe Thunderstorm Warning | PDT | Crook, Deschutes, Jefferson | 66 min |
| May 31, 10:28 AM PDT | Severe Thunderstorm Warning | PDT | Morrow, Umatilla | 62 min |
| May 31, 10:55 AM PDT | Severe Thunderstorm Warning | PDT | Crook | 65 min |
| May 31, 10:58 AM PDT | Severe Thunderstorm Warning | PDT | Morrow | 62 min |
| May 31, 11:25 AM PDT | Severe Thunderstorm Warning | PDT | Morrow, Umatilla | 65 min |
| May 31, 11:45 AM PDT | Flash Flood Warning | PDT | Morrow | 2 hr |
| May 31, 12:25 PM PDT | Severe Thunderstorm Warning | PDT | Umatilla | 50 min |
| May 31, 1:05 PM PDT | Severe Thunderstorm Warning | PDT | Union | 55 min |
| May 31, 1:06 PM PDT | Severe Thunderstorm Warning | PDT | Union | 54 min |
| May 31, 1:10 PM PDT | Severe Thunderstorm Warning | PDT | Union | 50 min |
| May 31, 1:15 PM PDT | Severe Thunderstorm Warning | PDT | Umatilla | 60 min |
| May 31, 1:25 PM PDT | Flash Flood Warning | PDT | Umatilla | 2 hr |
| May 31, 2:29 PM PDT | Severe Thunderstorm Warning | PDT | Wallowa | 61 min |
Nearby
Flash Flood Warnings in Oregon, 1997Every flash flood 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.