Flash Flood, Pottawattamie
- When
- September 2, 2:00 AM CST to 4:45 AM CST
- Where
- Pottawattamie County, Countywide
- Coordinates
- 41.337, -95.542 (the zone’s center; the record gives no point)
Flash Flooding in Iowa, September 2, 1997
A cluster of thunderstorms dumped rains of 4 to 7 inches in a short period of time in Pottawattamie and Mills counties. This caused lowland rural flooding and numerous pockets of urban flooding.
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 OAX wrote it up.
A cluster of thunderstorms dumped rains of 4 to 7 inches in a short period of time in Pottawattamie and Mills counties. This caused lowland rural flooding and numerous pockets of urban flooding. Streets were closed in several locations.
The radar
The national radar mosaic for the moment the first event began.
Event by event
2 flash flood. Local standard time, as filed.
Flash Flood, Mills
- When
- September 2, 2:00 AM CST to 4:45 AM CST
- Where
- Mills County, Countywide
- Coordinates
- 41.034, -95.621 (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
- Tornado and Flash Flooding in Arizona, September 2 to 13, 1997
- Lightning Strike in Florida, September 2, 1997
- Hail and Waterspout in Oregon, September 2 to 14, 1997
- Hail and Damaging Winds in Texas, September 2, 1997
- Flash Flooding in California, September 2, 1997
- Flooding in Florida, September 2, 1997
- Flash Flood and Hail in California, September 2, 1997
- Damaging Wind and Lightning Strike in Texas, September 2, 1997
- Lightning Strike in Florida, September 2, 1997
- Damaging Wind in Oklahoma, September 2, 1997
- Lightning Strike in Alabama, September 2, 1997
- Flash Flooding in Nebraska, September 2, 1997
More
Every storm in Iowa in 1997Every state in 1997This day in weather historyWarnings in Iowa, 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: 5617997, 5617998.