Hail, Knox
- When
- August 23, 4:25 PM CST
- Where
- Knox County, 2 mi N of Victoria
- Measured
- 0.75 in hail
- Reported by
- EMERGENCY MANAGER
- Coordinates
- 41.070, -90.100
Hail and Damaging Winds in Illinois, August 23, 1999
5 thunderstorm wind, 1 hail, as filed by the National Weather Service.
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
The toll
- Deaths
- 0
- Injuries
- 0
- Property damage
- $20,000
- Crop damage
- None recorded
- Events
- 6
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 national radar mosaic for the moment the first event began.
Event by event
5 thunderstorm wind, 1 hail. Local standard time, as filed.
Thunderstorm Wind, Fulton
- When
- August 23, 5:05 PM CST to 5:15 PM CST
- Where
- Fulton County, Farmington to Canton
- Property damage
- $10,000
- Reported by
- LAW ENFORCEMENT
- Coordinates
- 40.700, -90.000
Several large tree limbs and power lines were blown down.
Thunderstorm Wind, Tazewell
- When
- August 23, 5:40 PM CST to 5:45 PM CST
- Where
- Tazewell County, Delavan to Morton
- Measured
- 52 kt (60 mph)
- Reported by
- EMERGENCY MANAGER
- Coordinates
- 40.370, -89.550
Several large tree limbs blown down.
Thunderstorm Wind, Menard
- When
- August 23, 6:10 PM CST to 6:20 PM CST
- Where
- Menard County, Petersburg to Greenview
- Reported by
- EMERGENCY MANAGER
- Coordinates
- 40.020, -89.850
Several trees and tree limbs were blown down.
Thunderstorm Wind, Sangamon
- When
- August 23, 6:20 PM CST to 6:30 PM CST
- Where
- Sangamon County, Pleasant Plains to Sherman
- Property damage
- $10,000
- Reported by
- EMERGENCY MANAGER
- Coordinates
- 39.870, -89.920
Large tree limbs and power lines blown down.
Thunderstorm Wind, Logan
- When
- August 23, 6:26 PM CST
- Where
- Logan County, Lincoln
- Measured
- 52 kt (60 mph)
- Reported by
- OFFICIAL NWS OBS.
- Coordinates
- 40.150, -89.370
What these are
- Hail
- Hail three-quarters of an inch or larger, or smaller hail that caused damage, filed with the largest stone measured.
- 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
- Hail and Damaging Winds in Oklahoma, August 23, 1999
- Hail and Damaging Winds in Oklahoma, August 23, 1999
- Flash Flooding in Puerto Rico, August 23, 1999
- Wildfire in California, August 23 to 31, 1999
- Flash Flood in Colorado, August 23, 1999
- Tornadoes and Flash Flooding in Texas, August 23 to 24, 1999
- Wildfire in California, August 23 to 29, 1999
- Wildfire in California, August 23 to 29, 1999
- Lightning Strike in Maine, August 23, 1999
- Flood and Damaging Winds in Illinois, August 23, 1999
- Flash Flooding and Hail in Virginia, August 23, 1999
- Flooding and Hail in Iowa, August 23, 1999
More
Every storm in Illinois in 1999Every state in 1999This day in weather historyWarnings in Illinois, August 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: 5713480, 5713481, 5713482, 5713484, 5713483, 5713485.