Hail, Warren
- When
- July 13, 7:19 AM CST
- Where
- Warren County, Indianola
- Measured
- 1 in hail
- Property damage
- $1,000
- Crop damage
- $2,000
- Coordinates
- 41.370, -93.570
Thunderstorms erupted over central Iowa along an old outflow boundary left from the previous nights convection. The air mass was very unstable with surface dew point temperatures at sunrise in the mid to upper 70s.
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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.
The episode as NWS DMX wrote it up.
Thunderstorms erupted over central Iowa along an old outflow boundary left from the previous nights convection. The air mass was very unstable with surface dew point temperatures at sunrise in the mid to upper 70s. Most of the storms only produced heavy rainfall, however one storm dropped one inch diameter hail on Indianola.
The Des Moines radar (KDMX), 42 km away, was scanning. The volume nearest the first event began at 13:23 UTC.
1 hail. Local standard time, as filed.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Iowa in 1997Every state in 1997This day in weather historyWarnings in Iowa, July 1997
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: 5603023.