Thunderstorm Wind, Carroll
- When
- June 1, 4:05 PM CST
- Where
- Carroll County, Savanna
- Measured
- 54 kt (62 mph)
- Reported by
- LAW ENFORCEMENT
- Coordinates
- 42.080, -90.150
Thunderstorm winds gusting over 60 mph blew down several large trees.
Tornado and Flood in Illinois, June 1, 1999
8 thunderstorm wind, 1 funnel cloud, 1 flood, 1 tornado, as filed by the National Weather Service.
Where it happened
Every event with a place to put it; 2 filed by county or forecast zone are drawn at its center, in a lighter ring. 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
The toll
- Deaths
- 0
- Injuries
- 0
- Property damage
- None recorded
- Crop damage
- None recorded
- Events
- 11
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 radar
The Quad Cities radar (KDVN), 63 km away, was scanning. The volume nearest the first event began at 22:02 UTC.
Event by event
8 thunderstorm wind, 1 funnel cloud, 1 flood, 1 tornado. Local standard time, as filed.
Thunderstorm Wind, Carroll
- When
- June 1, 4:10 PM CST
- Where
- Carroll County, Lanark
- Measured
- 58 kt (67 mph)
- Reported by
- LAW ENFORCEMENT
- Coordinates
- 42.100, -89.830
Thunderstorm winds dumped a grain leg, a grain transport device, onto a large storage bin. Numerous reports of tree limbs down.
Funnel Cloud, McDonough
- When
- June 1, 4:38 PM CST
- Where
- McDonough County, 2 mi E of Industry
- Reported by
- TRAINED SPOTTER
- Coordinates
- 40.456, -90.678 (the zone’s center; the record gives no point)
Flood, Warren
- When
- June 1, 4:38 PM CST
- Where
- Warren County, Roseville
- Reported by
- EMERGENCY MANAGER
- Coordinates
- 40.849, -90.615 (the zone’s center; the record gives no point)
Water over several roads in town.
Thunderstorm Wind, Henry
- When
- June 1, 4:55 PM CST
- Where
- Henry County, 5 mi N of Geneseo
- Measured
- 54 kt (62 mph)
- Reported by
- LAW ENFORCEMENT
- Coordinates
- 41.520, -90.150
Several large tree limbs downed.
Thunderstorm Wind, Carroll
- When
- June 1, 5:00 PM CST
- Where
- Carroll County, Thomson
- Measured
- 52 kt (60 mph)
- Reported by
- TRAINED SPOTTER
- Coordinates
- 41.970, -90.100
Thunderstorm Wind, Henry
- When
- June 1, 5:00 PM CST
- Where
- Henry County, Lynn Center
- Measured
- 54 kt (62 mph)
- Reported by
- LAW ENFORCEMENT
- Coordinates
- 41.300, -90.370
Several power lines downed.
Thunderstorm Wind, Whiteside
- When
- June 1, 5:05 PM CST
- Where
- Whiteside County, Prophetstown
- Measured
- 52 kt (60 mph)
- Reported by
- EMERGENCY MANAGER
- Coordinates
- 41.670, -89.930
Thunderstorm winds gusted to 60 mph for 5 minutes. A few small trees were downed.
Thunderstorm Wind, Henry
- When
- June 1, 5:10 PM CST
- Where
- Henry County, Osco
- Measured
- 52 kt (60 mph)
- Reported by
- LAW ENFORCEMENT
- Coordinates
- 41.350, -90.280
A few large trees downed.
Thunderstorm Wind, Whiteside
- When
- June 1, 5:18 PM CST
- Where
- Whiteside County, 2 mi S of Morrison
- Measured
- 56 kt (64 mph)
- Reported by
- LAW ENFORCEMENT
- Coordinates
- 41.780, -89.970
Several large trees, roughly 4 to 6 feet in diameter, were blown down. Power lines were also downed.
Tornado, Stephenson
- When
- June 1, 5:50 PM CST
- Where
- Stephenson County, 1 mi S of Florence
- Rating
- F0
- Path length
- 0.1 mi
- Path width
- 10 yd
- Reported by
- TRAINED SPOTTER
- Coordinates
- 42.200, -89.650
Brief tornado touchdown along West Florence Road. No damage was reported.
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.
- Funnel Cloud
- A rotating column of cloud extending from a thunderstorm that did not reach the ground.
- Flood
- Flooding that develops more slowly than a flash flood: rivers leaving their banks, or water standing over land for an extended time.
- Tornado
- A violently rotating column of air in contact with the ground and extending from a thunderstorm, filed with its path, width and Fujita or Enhanced Fujita rating from the damage survey.
After NWS Directive 10-1605, the rules offices file Storm Data by.
The same day elsewhere
- Tornadoes and Hail in Oklahoma, June 1, 1999
- Tornado in Illinois, June 1, 1999
- Tornado in Missouri, June 1, 1999
- Tornadoes and Hail in Illinois, June 1, 1999
- Tornadoes in Missouri, June 1, 1999
- Flash Flooding in Illinois, June 1 to 2, 1999
- Tornadoes in Illinois, June 1, 1999
- Tornado in Illinois, June 1, 1999
- Flooding and Hail in Kansas, June 1 to 28, 1999
- Tornadoes and Flash Flooding in Texas, June 1 to 25, 1999
- Hail and Damaging Winds in Kansas, June 1, 1999
- Tornado and Hail in Illinois, June 1, 1999
More
Every storm in Illinois in 1999Every state in 1999This day in weather historyThe tornado archive for Illinois, 1999Warnings in Illinois, June 1999
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: 5710831, 5710832, 5710833, 5716052, 5710834, 5710835, 5710836, 5716048, 5716049, 5716050, 5716051.