Alert archive / Oregon / Flash Flood Warnings in 1997
Flash Flood Warning 31, NWS Pendleton, OR
NWS Pendleton, OR issued this flash flood warning at May 31, 1997, 3:05 AM PDT for Umatilla County, Oregon. It was in force for 85 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 31, 1997, 3:05 AM PDT (10:05 UTC)
- Expired
- May 31, 1997, 4:30 AM PDT
- In force
- 85 min
- Issued by
- NWS Pendleton, OR
- Area
- Whole counties
County Umatilla County, OR
The radar
The Pendleton radar (KPDT), 14 km from the middle of the area, began a volume at 10:09 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
Spokane, WA (KOTX), launched 00:00Z, 10.1 hours before the alert went out and 295 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
- 63 J/kg
- Mixed-layer CIN
- -12 J/kg
- Mixed-layer LCL
- 919 m above ground
- 0-6 km bulk shear
- 44 kt
- 0-1 km storm-relative helicity
- 77 m²/s²
- 0-3 km storm-relative helicity
- 208 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KPDT 311014 COR FFWPDT ORC059-311130- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM AND FLASH FLOOD WARNING...CORR FOR EXPIRE TIME NATIONAL WEATHER SERVICE PENDLETON OR 305 AM PDT SAT MAY 31 1997 THE NATIONAL WEATHER SERVICE IN PENDLETON HAS ISSUED A SEVERE THUNDERSTORM AND FLASH FLOOD WARNING EFFECTIVE UNTIL 430 AM PDT FOR PEOPLE IN THE FOLLOWING LOCATION... IN NORTHEAST OREGON ...NORTHWESTERN UMATILLA COUNTY AT 300 AM...A SEVERE THUNDERSTORM IN CENTRAL MORROW COUNTY CONTINUED MOVING NORTHEAST AT 30 TO 35 MPH. THIS STORM WILL MOVE INTO NORTHWEST UMATILLA COUNTY AROUND 320 AM. THIS STORM PRODUCED ONE INCH DIAMETER HAIL...HIGH WINDS...HEAVY RAIN AND LIGHTNING WHEN IT MOVED THROUGH IONE AT 245 AM. THE PATH OF THIS STORM WILL TAKE IT THROUGH THE HERMISTON...STANFIELD AND ECHO AREAS BETWEEN 330 AND 400 AM. FLASH FLOODING AND URBAN FLOODING IS LIKELY. SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55 MPH...DESTRUCTIVE HAIL.$..DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAD. 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, 2:00 AM PDT, 1 hour 5 minutes earlier.
Area forecast discussion, May 31, 2:00 AM PDT, 1 hour 5 minutes before
NORTHEAST OREGON/SOUTHEAST WASHINGTON FORECAST DISCUSSION NATIONAL WEATHER SERVICE PENDLETON OREGON 200 AM PDT SAT MAY 31 1997 A FEW SEVERE TS CONTINUE ATTM. DUE TO PRIORITY...THIS PRODUCT IS DELAYED WITH ESTIMATED TIME OF NEXT ISSUANCE AT 830 AM. SB PDT 6311 ALW 6311 PSC 6211 YKM 6211 .KPDT...VCP11/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 | Severe Thunderstorm Warning | PDT | Umatilla | 85 min |
| May 31, 8:41 AM PDT | Flash Flood Warning | PDT | Crook, Jefferson | 2 hr |
| 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.