Illinois, 2000

Damaging Winds in Illinois, June 23, 2000

June 23, 2000 · NWS DVN · 2 events in 1 county or zone

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.

Where it happened

Every event with a place to put it. 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

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The toll

Deaths
0
Injuries
0
Property damage
$6,000
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 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 radar

The Quad Cities radar (KDVN), 46 km away, was scanning. The volume nearest the first event began at 20:59 UTC.

Open the radar archive at this moment

Event by event

2 thunderstorm wind. Local standard time, as filed.

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

Thunderstorm Wind, Henry

When
June 23, 3:03 PM CST
Where
Henry County, Opheim
Property damage
$1,000
Reported by
LAW ENFORCEMENT
Coordinates
41.250, -90.383

What these are

Thunderstorm Wind
Winds from a thunderstorm of 50 knots (58 mph) or more, or lower winds that caused damage or casualties. Measured gusts are marked MG, estimated EG.

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

The same day elsewhere

More

Every storm in Illinois in 2000Every state in 2000This day in weather historyWarnings in Illinois, June 2000

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: 5153817, 5153818.