Thunderstorm Wind, Henry
- When
- June 23, 3:00 PM CST
- Where
- Henry County, Countywide
- Property damage
- $5,000
- Reported by
- LAW ENFORCEMENT
- Coordinates
- 41.367, -90.133
Morning upper air analysis showed a low level thermal gradient from Eastern Minnesota through Eastern Iowa into Western Illinois. A southerly low level jet of 25 to 30 knots interacted with the boundary to trigger strong to severe thunderstorms over Northeast Iowa during the late morning.
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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 DVN wrote it up.
Morning upper air analysis showed a low level thermal gradient from Eastern Minnesota through Eastern Iowa into Western Illinois. A southerly low level jet of 25 to 30 knots interacted with the boundary to trigger strong to severe thunderstorms over Northeast Iowa during the late morning. Thunderstorms continued to develop throughout the afternoon, organizing into a bow echo along the Mississippi River, and racing across West Central Illinois during the late afternoon and evening. Many reports of 40 to 50 mph winds and small hail were received. Strong winds downed trees and power lines in Henry County in Cambridge, Andover, Geneseo and Opheim.
The Quad Cities radar (KDVN), 46 km away, was scanning. The volume nearest the first event began at 20:59 UTC.
2 thunderstorm wind. Local standard time, as filed.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Illinois in 2000Every state in 2000This day in weather historyWarnings in Illinois, June 2000
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: 5153817, 5153818.