1 tornado, as filed by the National Weather Service.
Every event with a place to put it. Tap one for its entry below.
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 Omaha radar (KOAX), 99 km away, was scanning. The volume nearest the first event began at 20:31 UTC.
1 tornado. Local standard time, as filed.
Two homes sustained moderate to major damage, 3 grain bins and other outbuildings destroyed. Several vehicles were carried some distance. Large tree uprooted.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Iowa in 1999Every state in 1999This day in weather historyThe tornado archive for Iowa, 1999Warnings in Iowa, May 1999
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: 5697017.