Flash Flood, Malheur
- When
- September 11, 2:00 PM MST
- Where
- Malheur County, Adrian
- Coordinates
- 43.193, -117.623 (the zone’s center; the record gives no point)
Flash Flooding in Oregon, September 11, 1997
During the afternoon of September 11th, heavy showers and thunderstorms triggered minor flash flooding over south eastern Oregon. Spotters reported a rock slide over the road to Owyhee Dam and water over highway 201 at Ridgeview near Adrian.
Where it happened
Every event with a place to put it; 2 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.
- Tornadoes
- Tropical storms and surge
- Floods
- Wind
- Hail
- Winter weather
- Heat and drought
- Cold
- Fire, smoke and dust
- Marine and coastal
- Other
The toll
- Deaths
- 0
- Injuries
- 0
- Property damage
- None recorded
- Crop damage
- None recorded
- Events
- 2
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
What happened
The episode as NWS BOI wrote it up.
During the afternoon of September 11th, heavy showers and thunderstorms triggered minor flash flooding over south eastern Oregon. Spotters reported a rock slide over the road to Owyhee Dam and water over highway 201 at Ridgeview near Adrian. No damage or injuries were reported.
The radar
The Boise radar (KCBX), 117 km away, was scanning. The volume nearest the first event began at 20:58 UTC.
Event by event
2 flash flood. Local standard time, as filed.
Flash Flood, Malheur
- When
- September 11, 2:05 PM MST
- Where
- Malheur County, 20 mi SW of Nyssa
- Coordinates
- 43.193, -117.623 (the zone’s center; the record gives no point)
What these are
- Flash Flood
- Flooding that begins within six hours of the rain that causes it, or of a dam or levee failure or ice jam release, often with deadly speed.
After NWS Directive 10-1605, the rules offices file Storm Data by.
The same day elsewhere
- Hail in North Carolina, September 11, 1997
- Tornado and Heavy Rain in New Jersey, September 11, 1997
- Hurricane in Guam, September 11 to 12, 1997
- Flash Flood in Idaho, September 11, 1997
- Flash Flood and Flood in Utah, September 11, 1997
- Heavy Rain in New Jersey, September 11, 1997
- Lightning Strike in Florida, September 11, 1997
- Flash Flooding and Damaging Winds in Texas, September 11 to 23, 1997
- Heavy Rain in Pennsylvania, September 11, 1997
- Flash Flood and Hail in Arizona, September 11, 1997
- Hail and Damaging Wind in Virginia, September 11, 1997
- Hail and Damaging Wind in South Carolina, September 11, 1997
More
Every storm in Oregon in 1997Every state in 1997This day in weather historyWarnings in Oregon, September 1997
Sources
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 5616839, 5616838.