Iowa, 1997

Hail in Iowa, June 20, 1997

June 20, 1997 · NWS DMX · 1 event in 1 county or zone

Very unstable air was located over Iowa with surface dew point temperatures in the 75 to 80 degree range and lifted indices around -15 degrees C. The lack of a boundary in the area precluded development over central Iowa, however one cell developed rapidly over Warren County.

Where it happened

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  • Tornadoes
  • Tropical storms and surge
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  • Hail
  • Winter weather
  • Heat and drought
  • Cold
  • Fire, smoke and dust
  • Marine and coastal
  • Other

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The toll

Deaths
0
Injuries
0
Property damage
$1,000
Crop damage
$5,000
Events
1

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 DMX wrote it up.

Very unstable air was located over Iowa with surface dew point temperatures in the 75 to 80 degree range and lifted indices around -15 degrees C. The lack of a boundary in the area precluded development over central Iowa, however one cell developed rapidly over Warren County. It dropped hail nearly the size of nickels in Indianola before it dissipated.

The radar

The Des Moines radar (KDMX), 42 km away, was scanning. The volume nearest the first event began at 21:48 UTC.

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Event by event

1 hail. Local standard time, as filed.

Hail, Warren

When
June 20, 3:49 PM CST
Where
Warren County, Indianola
Measured
0.85 in hail
Property damage
$1,000
Crop damage
$5,000
Coordinates
41.370, -93.570

What these are

Hail
Hail three-quarters of an inch or larger, or smaller hail that caused damage, filed with the largest stone measured.

After NWS Directive 10-1605, the rules offices file Storm Data by.

The same day elsewhere

More

Every storm in Iowa in 1997Every state in 1997This day in weather historyWarnings in Iowa, June 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: 5598763.