Illinois, 2001Tornadoes and Hail in Illinois, August 18, 2001
August 18, 2001 · NWS ILX · 38 events in 20 counties and zones
19 hail, 15 thunderstorm wind, 4 tornado, as filed by the National Weather Service.
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
Open the live radar over this ground
- Deaths
- 0
- Injuries
- 6
- Property damage
- None recorded
- Crop damage
- None recorded
- Events
- 38
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 forecasters said that day
The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Lincoln, IL wrote its last area forecast discussion before the first event at Aug 18, 9:55 AM CST, 1 hour 21 minutes earlier.
Area forecast discussion, Aug 18, 9:55 AM CST, 1 hour 21 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LINCOLN IL
1055 AM CDT SAT AUG 18 2001
CURRENT FCST LOOKS ON TARGET WITH ADDITIONAL CONVECTION STARTING THIS
AFTERNOON TO NW. CONVECTION CONTINUES IN NRN PARTS OF CWA AND SHOULD
CONTINUE INTO THIS AFTERNOON AS ADDITIONAL STOROMS DEVELOP ALONG
FRONT...WHICH IS CRNTLY EXTENDING FROM LOW IN SE IA TO NW MO. BEST
INSTABILITY WILL BE IN SRN HALF OF STATE WHERE MOST SUNSHINE HAS
BEEN SO FAR. CAPE WILL BE AROUND 1500-2000 BY THIS AFTERNOON.
ADDITIONAL CONCERN IS COLD AIR ALOFT. COLD CORE SYSTEM WITH BETTER
THAN -14 AT 500 AND FREEZING LEVELS BETWEEN 10000FT AND 11000FT.
MODELS ADVERTISE PCPN STAYING NORTH WHERE...BUT BELIEVE STORMS WILL
DEVELOP ALONG FRONT WEST OF CWA AND THEN MOVE INTO MORE UNSTABLE
ENVIRONMENT...FAVORABLE FOR STORMS TO INTENSIFY THIS AFTERNOON AND
INTO THIS EVENING. BIGGEST CONCERN WILL BE HAIL AND WIND.
WITH ADDED SUNSHINE...NEED TO TWEEK TEMPS IN SRN HALF OF CWA. WILL
ALSO ADJUST PCPN WORDING IN ALL GROUPS.
.ILX...NONE.
AUTEN
In the hours before
Special weather statement, Aug 18, 10:30 AM CST, 46 minutes before
ILZ027>031-036>038-040>057-061>063-066>068-071>073-181800-
HAZARDOUS WEATHER OUTLOOK FOR CENTRAL ILLINOIS
NATIONAL WEATHER SERVICE LINCOLN IL
1130 AM CDT SAT AUG 18 2001
...RISK OF SEVERE THUNDERSTORMS TODAY ACROSS CENTRAL ILLINOIS...
A VIGOROUS UPPER LEVEL DISTURBANCE IS FORECAST TO PUSH INTO ILLINOIS
THIS AFTERNOON. THIS WILL COMBINE WITH A WARM AND HUMID AIR MASS TO
PRODUCE THUNDERSTORMS OVER THE AREA. SOME OF THESE STORMS COULD BE
SEVERE WITH THE PRIMARY THREAT BEING LARGE HAIL AND DAMAGING WINDS.
AS A RESULT...SPOTTER ACTIVATION MAY BE NEEDED THIS AFTERNOON AND
INTO THIS EVENING OVER MOST OF CENTRAL ILLINOIS.
AUTEN
Event by event
19 hail, 15 thunderstorm wind, 4 tornado. Local standard time, as filed.
Hail, Mason
- When
- August 18, 11:16 AM CST to 11:42 AM CST
- Where
- Mason County, Manito
- Measured
- 2.75 in hail
- Reported by
- LAW ENFORCEMENT
- Coordinates
- 40.417, -89.767
Hail, McLean
- When
- August 18, 11:30 AM CST to 11:37 AM CST
- Where
- McLean County, Normal
- Measured
- 1 in hail
- Reported by
- NWS EMPLOYEE(OFF DUTY)
- Coordinates
- 40.517, -89.000
Hail, Tazewell
- When
- August 18, 11:35 AM CST to 11:39 AM CST
- Where
- Tazewell County, 6 mi SW of Delavan
- Measured
- 2.5 in hail
- Reported by
- LAW ENFORCEMENT
- Coordinates
- 40.300, -89.633
Tornado, Mason
- When
- August 18, 11:36 AM CST to 11:37 AM CST
- Where
- Mason County, 5 mi N of Mason City
- Rating
- F0
- Path length
- 0.1 mi
- Path width
- 25 yd
- Reported by
- NWS STORM SURVEY
- Coordinates
- 40.283, -89.700
A tornado briefly touched down 5.3 miles north of Mason City. It ripped off a large top of a tree and carried it 100 feet. One small tree was snapped. All gutters on a house were lifted off, as well as a table being blown into a open garage door (facing south). A door on the house was also blown open with the air moving through the attic in the house breaking out some windows. A small shed nearby was intact. Fire officials about 1.5 miles south of the house saw swirling clouds over the house's location. No injuries were reported.
Hail, Logan
- When
- August 18, 11:39 AM CST to 12:05 PM CST
- Where
- Logan County, San Jose
- Measured
- 3.75 in hail
- Reported by
- EMERGENCY MANAGER
- Coordinates
- 40.300, -89.600
Hail varying in size from 3/4 inch to 3.75 inches fell across northern Logan County. The largest hail occurred in San Jose.
Thunderstorm Wind, Logan
- When
- August 18, 12:19 PM CST
- Where
- Logan County, 4 mi ENE of Emden
- Measured
- 50 kt (58 mph)
- Reported by
- EMERGENCY MANAGER
- Coordinates
- 40.317, -89.417
A power pole was blown down onto US Highway 136, two miles east of Interstate 155.
Hail, Logan
- When
- August 18, 12:40 PM CST
- Where
- Logan County, New Holland
- Measured
- 1 in hail
- Reported by
- EMERGENCY MANAGER
- Coordinates
- 40.183, -89.583
Hail, Champaign
- When
- August 18, 12:58 PM CST to 1:10 PM CST
- Where
- Champaign County, 2 mi N of Rantoul
- Measured
- 1 in hail
- Reported by
- NEWSPAPER
- Coordinates
- 40.350, -88.150
Hail up to one inch in diameter fell in a swath from 2 miles north of Rantoul to 2 miles northeast of Rantoul. It covered the ground at the Brookhill Golf Course. Also, several homes sustained siding damage due to the hail.
Thunderstorm Wind, Champaign
- When
- August 18, 12:58 PM CST to 1:10 PM CST
- Where
- Champaign County, 2 mi N of Rantoul
- Measured
- 50 kt (58 mph)
- Reported by
- NEWSPAPER
- Coordinates
- 40.350, -88.150
Several large trees were blown down.
Thunderstorm Wind, De Witt
- When
- August 18, 1:00 PM CST to 1:15 PM CST
- Where
- De Witt County, 2 mi N of Clinton
- Measured
- 52 kt (60 mph)
- Reported by
- NWS STORM SURVEY
- Coordinates
- 40.183, -88.950
Damaging downburst winds moved across central portions of Dewitt county. The path of the damage was two to three miles wide and extended from 2.25 miles north of Clinton to Dewitt to 2.5 miles north of Weldon. The extent of the damage included a cement block wall blown over at a construction site north of Clinton, campers blown over at Clinton Lake State Park, siding damage to numerous homes, sporadic trees and tree limbs blown down, plus crop damage. A warehouse at a power plant sustained some roof damage and and empty grain bin was picked up and carried around 150 feet. No injuries were reported.
Tornado, De Witt
- When
- August 18, 1:05 PM CST to 1:08 PM CST
- Where
- De Witt County, De Witt
- Rating
- F0
- Path length
- 0.3 mi
- Path width
- 100 yd
- Reported by
- NWS STORM SURVEY
- Coordinates
- 40.183, -88.783
A tornado formed along the leading edge of downburst winds just northwest of Dewitt. It moved southeast into town before lifting. It blew a chimney off of a church as well as some of its windows. Also, two homes sustained roof damage and a garage was blown down. Numerous large trees were ripped up and blown over. No injuries were reported.
Hail, Menard
- When
- August 18, 1:11 PM CST to 1:18 PM CST
- Where
- Menard County, 2 mi S of Atterberry
- Measured
- 1 in hail
- Reported by
- EMERGENCY MANAGER
- Coordinates
- 40.017, -89.900
Thunderstorm Wind, Piatt
- When
- August 18, 1:23 PM CST to 1:35 PM CST
- Where
- Piatt County, 5 mi N of Deland
- Measured
- 55 kt (63 mph)
- Reported by
- NWS STORM SURVEY
- Coordinates
- 40.183, -88.650
Downburst winds caused sporadic damage in the county in a two to three mile wide area. Several large trees were blown down. A door on a machine shed was blown in and sporadic crop damage was noted. No injuries were reported.
Hail, Logan
- When
- August 18, 1:26 PM CST to 1:35 PM CST
- Where
- Logan County, Broadwell
- Measured
- 0.75 in hail
- Reported by
- EMERGENCY MANAGER
- Coordinates
- 40.067, -89.450
Thunderstorm Wind, Vermilion
- When
- August 18, 1:31 PM CST to 1:50 PM CST
- Where
- Vermilion County, Hoopeston
- Measured
- 52 kt (60 mph)
- Reported by
- EMERGENCY MANAGER
- Coordinates
- 40.467, -87.667
A large tree was blown down near Rossville.
Thunderstorm Wind, Champaign
- When
- August 18, 1:40 PM CST to 1:55 PM CST
- Where
- Champaign County, Mahomet
- Measured
- 62 kt (71 mph)
- Reported by
- GENERAL PUBLIC
- Coordinates
- 40.200, -88.400
Thunderstorm winds damaged the roof of a barber shop on the west side of Champaign. Also, a large tree was blown down on top of an unoccupied truck.
Hail, Macon
- When
- August 18, 2:10 PM CST to 2:15 PM CST
- Where
- Macon County, 5 mi W of Decatur
- Measured
- 1.75 in hail
- Reported by
- LAW ENFORCEMENT
- Coordinates
- 39.850, -89.050
Tornado, Champaign
- When
- August 18, 2:14 PM CST to 2:15 PM CST
- Where
- Champaign County, 2 mi W of Ogden
- Rating
- F0
- Path length
- 0.1 mi
- Path width
- 20 yd
- Reported by
- BROADCAST MEDIA
- Coordinates
- 40.117, -87.983
A tornado briefly touched down in a field. No damage or injuries were reported.
Hail, Sangamon
- When
- August 18, 2:15 PM CST to 2:20 PM CST
- Where
- Sangamon County, Buffalo
- Measured
- 1 in hail
- Reported by
- EMERGENCY MANAGER
- Coordinates
- 39.850, -89.417
Hail, Piatt
- When
- August 18, 2:20 PM CST
- Where
- Piatt County, Monticello
- Measured
- 0.75 in hail
- Reported by
- LAW ENFORCEMENT
- Coordinates
- 40.033, -88.567
Hail, Champaign
- When
- August 18, 2:25 PM CST to 3:06 PM CST
- Where
- Champaign County, Ivesdale
- Measured
- 1.75 in hail
- Reported by
- LAW ENFORCEMENT
- Coordinates
- 39.933, -88.450
Hail ranging from dime to golf ball size was reported in Ivesdale, Tolono, Pesotum, Philo and Broadlands.
Thunderstorm Wind, Piatt
- When
- August 18, 2:29 PM CST to 2:30 PM CST
- Where
- Piatt County, Atwood
- Measured
- 50 kt (58 mph)
- Reported by
- EMERGENCY MANAGER
- Coordinates
- 39.800, -88.467
Several trees, tree limbs, and power lines were blown down in Atwood near the Piatt/Moultrie/Douglas county lines.
Thunderstorm Wind, Moultrie
- When
- August 18, 2:29 PM CST to 2:30 PM CST
- Where
- Moultrie County, 10 mi NE of Lovington
- Measured
- 50 kt (58 mph)
- Reported by
- EMERGENCY MANAGER
- Coordinates
- 39.817, -88.500
Several trees, tree limbs, and power lines were blown down in and around Atwood on the Piatt/Moultrie/Douglas county lines.
Thunderstorm Wind, Douglas
- When
- August 18, 2:30 PM CST to 3:19 PM CST
- Where
- Douglas County, 9 mi W of Tuscola
- Measured
- 50 kt (58 mph)
- Injuries
- 6 direct, 0 indirect
- Reported by
- EMERGENCY MANAGER
- Coordinates
- 39.800, -88.450
Six people were injured at a local festival in Atwood from flying debris, which is west of Tuscola on the Douglas/Piatt county line. One of the people injured was taken to a local hospital. Several power lines were reported down as well as a number of trees falling onto cars and houses in Atwood. Also, numerous power lines were blown down in Tuscola, Arthur and Arcola. Several large trees were blown down in Tuscola.
Thunderstorm Wind, Macon
- When
- August 18, 2:44 PM CST
- Where
- Macon County, Argenta
- Measured
- 50 kt (58 mph)
- Reported by
- FIRE DEPT/RESCUE SQUAD
- Coordinates
- 39.983, -88.817
Large tree fell onto the roof of a house.
Hail, Macon
- When
- August 18, 2:44 PM CST
- Where
- Macon County, Argenta
- Measured
- 0.75 in hail
- Reported by
- FIRE DEPT/RESCUE SQUAD
- Coordinates
- 39.983, -88.817
Tornado, Champaign
- When
- August 18, 2:51 PM CST
- Where
- Champaign County, 5 mi S of Philo
- Rating
- F0
- Path length
- 0.1 mi
- Path width
- 5 yd
- Reported by
- TRAINED SPOTTER
- Coordinates
- 39.933, -88.150
A brief touchdown was noted over an open field by an University of Illinois student and his wife. No damage was reported.
Hail, Moultrie
- When
- August 18, 2:54 PM CST
- Where
- Moultrie County, Lovington
- Measured
- 0.75 in hail
- Reported by
- LAW ENFORCEMENT
- Coordinates
- 39.717, -88.633
Hail, Vermilion
- When
- August 18, 3:10 PM CST to 3:24 PM CST
- Where
- Vermilion County, Allerton
- Measured
- 2 in hail
- Reported by
- EMERGENCY MANAGER
- Coordinates
- 39.917, -87.850
Hail, Christian
- When
- August 18, 3:14 PM CST
- Where
- Christian County, Morrisonville
- Measured
- 1.25 in hail
- Reported by
- EMERGENCY MANAGER
- Coordinates
- 39.417, -89.467
Thunderstorm Wind, Edgar
- When
- August 18, 3:30 PM CST to 3:55 PM CST
- Where
- Edgar County, 1 mi W of Horace
- Measured
- 50 kt (58 mph)
- Reported by
- EMERGENCY MANAGER
- Coordinates
- 39.717, -87.717
A few trees and tree limbs were blown down one mile west of Horace and in Nevins.
Hail, Shelby
- When
- August 18, 3:45 PM CST
- Where
- Shelby County, Tower Hill
- Measured
- 0.75 in hail
- Reported by
- LAW ENFORCEMENT
- Coordinates
- 39.383, -88.967
Thunderstorm Wind, Coles
- When
- August 18, 3:59 PM CST
- Where
- Coles County, Mattoon
- Measured
- 50 kt (58 mph)
- Reported by
- OFFICIAL NWS OBS.
- Coordinates
- 39.483, -88.367
A large tree limb was blown down, landing on the roof of a motel causing minor damage.
Hail, Crawford
- When
- August 18, 4:17 PM CST to 4:40 PM CST
- Where
- Crawford County, Oblong
- Measured
- 0.75 in hail
- Reported by
- OFFICIAL NWS OBS.
- Coordinates
- 39.000, -87.917
Dime size hail was reported in Oblong, Robinson and Palestine.
Thunderstorm Wind, Crawford
- When
- August 18, 4:30 PM CST
- Where
- Crawford County, 2 mi S of Duncanville
- Measured
- 50 kt (58 mph)
- Reported by
- NEWSPAPER
- Coordinates
- 38.933, -87.683
Thunderstorm winds caused minor shingle damage to one home, blew over a large tree, as well as numerous tree limbs.
Thunderstorm Wind, Effingham
- When
- August 18, 5:00 PM CST
- Where
- Effingham County, Effingham
- Measured
- 50 kt (58 mph)
- Reported by
- FIRE DEPT/RESCUE SQUAD
- Coordinates
- 39.117, -88.533
Thunderstorm winds blew down several large tree limbs and power lines.
Thunderstorm Wind, Jasper
- When
- August 18, 5:55 PM CST
- Where
- Jasper County, Newton
- Measured
- 50 kt (58 mph)
- Reported by
- LAW ENFORCEMENT
- Coordinates
- 38.983, -88.167
Trees and power lines were blown down across the town.
Hail, Crawford
- When
- August 18, 6:18 PM CST
- Where
- Crawford County, Robinson
- Measured
- 0.75 in hail
- Reported by
- EMERGENCY MANAGER
- Coordinates
- 39.000, -87.733
- Hail
- Hail three-quarters of an inch or larger, or smaller hail that caused damage, filed with the largest stone measured.
- 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.
- 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.
- Wildfire in California, August 18 to 25, 2001$3.6 million · 1 event
- Hail and Damaging Winds in Indiana, August 18, 2001$77,000 · 1.75 in hail · 25 events
- Flooding and Hail in Indiana, August 18, 20011 injured · $20,000 · 1.75 in hail · 34 events
- Damaging Wind and Lightning Strike in Indiana, August 18, 2001$75,000 · 60 kt wind · 2 events
- Lightning Strike in Florida, August 18, 2001$50,000 · 1 event
- Damaging Wind and Lightning Strike in Florida, August 18, 2001$33,000 · 60 kt wind · 2 events
- Tornado in North Carolina, August 18, 2001$25,000 · F0 · 1 event
- Lightning Strike in South Carolina, August 18, 2001$25,000 · 1 event
- Lightning Strike in Florida, August 18, 2001$25,000 · 1 event
- Damaging Wind in Illinois, August 18, 2001$25,000 · 65 kt wind · 1 event
- Lightning Strike in Louisiana, August 18, 2001$22,000 · 1 event
- Hail in Indiana, August 18, 2001$21,000 · 4 in hail · 1 event
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: 5266237, 5266239, 5266238, 5266344, 5266240, 5266241, 5266334, 5266459, 5266460, 5266243, 5266242, 5266245, 5266244, 5266246, 5266247, 5266330, 5266331, 5266332, 5266333, 5266336, 5266335, 5266455, 5266457, 5266347, 5266338, 5266346, 5266345, 5266456, 5266337, 5266339, 5266458, 5266340, 5266454, 5266341, 5266461, 5266453, 5266343, 5266342.