Hail, Henry
- When
- May 31, 12:30 PM CST
- Where
- Henry County, Kewanee
- Measured
- 0.75 in hail
- Reported by
- BROADCAST MEDIA
- Coordinates
- 41.233, -89.933
Flooding and Hail in Illinois, May 31, 2000
Mesoanalysis during the early morning depicted an outflow boundary extending from Central Illinois into Central Iowa with a cold front extending from Northeast Iowa into Eastern Nebraska, intersecting the outflow interface near Des Moines. An elevated bow MCS (Mesoscale Convective System) developed between Mason City, Iowa and Marshalltown, Iowa, and raced eastward through Eastern Iowa and into…
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
- $38,000
- Crop damage
- None recorded
- Events
- 9
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.
Mesoanalysis during the early morning depicted an outflow boundary extending from Central Illinois into Central Iowa with a cold front extending from Northeast Iowa into Eastern Nebraska, intersecting the outflow interface near Des Moines. An elevated bow MCS (Mesoscale Convective System) developed between Mason City, Iowa and Marshalltown, Iowa, and raced eastward through Eastern Iowa and into Northwest and North Central Illinois during the early afternoon. The system, although weakening, still managed to produce several reports of high winds and heavy rain. Winds were estimated at 65 mph in a few areas, knocking down large trees and limbs. Strong straight line winds destroyed a barn in Mount Palatine. The second story of the barn was torn off, leaving twisted sheet metal and lumber strewn over several acres. Recent rains had already saturated the ground throughout Northwest Illinois. Additional heavy rain with this system caused localized flooding of streets and low-lying areas in Rock Island and Henry Counties.
The radar
The Quad Cities radar (KDVN), 68 km away, was scanning. The volume nearest the first event began at 18:30 UTC.
Event by event
6 thunderstorm wind, 2 flood, 1 hail. Local standard time, as filed.
Flood, Rock Island
- When
- May 31, 12:45 PM CST
- Where
- Rock Island County, Rock Is
- Reported by
- NEWSPAPER
- Coordinates
- 41.467, -90.567 (the zone’s center; the record gives no point)
Flood, Henry
- When
- May 31, 12:55 PM CST
- Where
- Henry County, Countywide
- Reported by
- NEWSPAPER
- Coordinates
- 41.353, -90.131 (the zone’s center; the record gives no point)
Thunderstorm Wind, Putnam
- When
- May 31, 12:57 PM CST
- Where
- Putnam County, Hennepin
- Measured
- 56 kt (64 mph)
- Reported by
- LAW ENFORCEMENT
- Coordinates
- 41.250, -89.350
Thunderstorm Wind, Putnam
- When
- May 31, 12:57 PM CST
- Where
- Putnam County, Mt Palatine
- Measured
- 56 kt (64 mph)
- Property damage
- $30,000
- Reported by
- LAW ENFORCEMENT
- Coordinates
- 41.183, -89.167
Thunderstorm Wind, Bureau
- When
- May 31, 1:00 PM CST
- Where
- Bureau County, Manlius
- Property damage
- $1,000
- Reported by
- EMERGENCY MANAGER
- Coordinates
- 41.450, -89.667
Thunderstorm Wind, Bureau
- When
- May 31, 1:00 PM CST
- Where
- Bureau County, Princeton
- Property damage
- $1,000
- Reported by
- NEWSPAPER
- Coordinates
- 41.367, -89.467
Thunderstorm Wind, Bureau
- When
- May 31, 1:00 PM CST
- Where
- Bureau County, Buda
- Property damage
- $5,000
- Reported by
- EMERGENCY MANAGER
- Coordinates
- 41.333, -89.683
Thunderstorm Wind, Bureau
- When
- May 31, 1:00 PM CST
- Where
- Bureau County, Walnut
- Property damage
- $1,000
- Reported by
- EMERGENCY MANAGER
- Coordinates
- 41.550, -89.600
What these are
- Hail
- Hail three-quarters of an inch or larger, or smaller hail that caused damage, filed with the largest stone measured.
- Flood
- Flooding that develops more slowly than a flash flood: rivers leaving their banks, or water standing over land for an extended time.
- 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
- Heat in Texas, May 31, 2000
- Tornadoes and Flash Flooding in Iowa, May 31, 2000
- Flash Flood and Hail in Pennsylvania, May 31, 2000
- Flash Flooding in Wisconsin, May 31, 2000
- Hail and Damaging Wind in Iowa, May 31, 2000
- Flash Flooding and Hail in Wisconsin, May 31, 2000
- Flash Flooding in Iowa, May 31, 2000
- Damaging Wind in Illinois, May 31, 2000
- Flash Flood and Hail in Iowa, May 31, 2000
- Damaging Wind in Texas, May 31, 2000
- Damaging Wind in Indiana, May 31, 2000
- Hail and Damaging Winds in Ohio, May 31, 2000
More
Every storm in Illinois in 2000Every state in 2000This day in weather historyWarnings in Illinois, May 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: 5147107, 5145814, 5145815, 5147108, 5147109, 5145812, 5145813, 5147110, 5147111.