Monroe storm history
Storm events recorded in Monroe, Illinois between 1950 and 2025.
447
Total events
40
Tornadoes
119
Hail
31
Floods
1
Deaths
$4.2M
Property damage
Most significant events
Strongest tornadoes, deadliest events, and biggest damage in this county. Up to 50 shown.
At around 6 AM CDT, deputies were called to the seen of an overturned vehicle with an individual thrown from it at the intersection of Fountain and Levee Roads. The person was pronounced dead at the scene. The official investigation determined that extreme fog was the cause of th…
Excessive Heat Excessive Heat
The combination of temperatures in the upper 90s and high humidity led to heat index values over 105 degrees for several days. The heat index peaked around 110 degrees.
Excessive Heat Excessive Heat
Hot and extremely humid conditions led to a week of heat index values over 105 degrees. The heat index peaked near 112 degrees.
Thunderstorm Wind Thunderstorm Wind
Thunderstorm winds snapped multiple trees and toppled several at their base.
Thunderstorm Wind Thunderstorm Wind
Thunderstorm winds downed power poles west of Hecker.
Thunderstorm Wind Thunderstorm Wind
Broadcast media reported estimated 65 mph thunderstorm wind gusts in Waterloo. They also reported visibility near zero statute miles coinciding with the wind gust.
Tornado EF1 Tornado
The tornado touched down at 8:00 PM along Koch Road, southeast of Madonnaville, and moved northeast, producing minor damage to a home and an outbuilding along Rock Road. Further to the northeast along LRC Road the tornado overturned an outbuilding and caused tree damage. More tre…
Tornado EF1 Tornado
A brief and weak tornado touched down along EE Road just south of Gilmore Lake and quickly moved northeast before dissipating at the intersection of EE Road and Gilmore Lake Road at 8:13 PM. When the tornado touched down it overturned an outbuilding, and was rated at 99 mph (EF-1…
Hail Hail
Hail Hail
Hail ranging from 1 inch to 1.5 inches fell in Columbia.
Hail Hail
Hail Hail
Tornado EF1 Tornado
At approximately 9:52 PM a tornado began southwest of Valmeyer, IL in Monroe County and continued northeast where it impacted the towns of Valmeyer and Waterloo. The worst damage was to residences and small businesses within these municipalities. From Waterloo the tornado moved i…
Thunderstorm Wind Thunderstorm Wind
Thunderstorm winds overturned a semi-truck on the Illinois side of the Jefferson Barracks Bridge.
Thunderstorm Wind Thunderstorm Wind
Thunderstorm winds caused damage to trees and sheds.
Hail Hail
Hail Hail
Hail Hail
The Columbia police department reported hail between quarter and golf ball sized.
Hail Hail
Hail Hail
Hail Hail
Hail Hail
Winter Storm Winter Storm
A mix of freezing rain and sleet fell through the morning of the 5th. After a brief break in the afternoon, snow fell in the evening. A total of 3 to 6 inches of snow and sleet fell across the county. About 1 to 2 inches of this fell in the form of sleet along with up to one quar…
Thunderstorm Wind Thunderstorm Wind
A tree was reported to be down and a fence damaged near Columbia.
Tornado EF0 Tornado
The tornado crossed from St. Louis County into Monroe County (Illinois) about 3.5 miles west of Columbia. As it tracked to the east it snapped off several tree limbs and caused a small farm shed to collapse after the walls were blown out along DD Road, just west of intersection w…
Hail Hail
Thunderstorm Wind Thunderstorm Wind
A trained spotter reported tree branches down in Waterloo.
Thunderstorm Wind Thunderstorm Wind
Shingles were blown off of at least one home and 1 inch diameter tree limbs were broken.
Hail Hail
Hail Hail
A swath of large hail up to baseball size fell across portions of east central Monroe County. The large hail was reported in New Design and Hecker, as well as rural areas nearby.
Hail Hail
Thunderstorm Wind Thunderstorm Wind
A large pine tree was split in half and several power lines were blown down around town.
Hail Hail
A discrete thunderstorm that produced up to 1.50 inch hail in Jefferson County, MO, weakened as it crossed the Mississippi River. It quickly regained strength and produced up to 1.75 inch hail in and around the towns of Renault and Ames. This storm would go on to produce hail in …
Hail Hail
Two cells merged in Monroe County, briefly producing 0.75 to 1 inch hail before weakening. No damage was reported.
Cold/Wind Chill Cold/Wind Chill
Wind chill values dropped to as low as 26 below zero with the coldest values during the nighttime hours.
Excessive Heat Excessive Heat
A period of very hot and extremely humid weather began on Sunday, August 20 and lasted through Friday, August 25. Heat index values climbed to 110 to 120 degrees each day as measured by numerous reporting sites across the region.
Tornado EF0 Tornado
A brief, weak tornado formed near Ames Road, just north of intersection with Faust Road and tracked due east. It struck a shed, producing EF0 damage. Images show the debris from the shed was thrown into the pond down wind. Further east, photos show a narrow track through a soybea…
Thunderstorm Wind Thunderstorm Wind
Excessive Heat Excessive Heat
Excessive heat across the county with highs 95 to 100 each day. Heat index values as high as 110 each day.
Thunderstorm Wind Thunderstorm Wind
Thunderstorm winds blew down several trees just southeast of Columbia.
Thunderstorm Wind Thunderstorm Wind
Thunderstorm winds blew down numerous trees, tree limbs and power lines across the northern portions of Monroe County. Some of the trees and power lines were down at the intersection of St. Paul Street and Gardner Street in Columbia. Columbia's American Legion Park and YMCA susta…
Tornado EF0 Tornado
At 6:34 PM CDT a tornado touched down on Bluff Road about 1.8 miles southwest of Maeystown. As it tracked to the northeast it caused minor tree damage as well as moderate damage to a farm outbuilding on the southwest side of town. It continued to the northeast across Monroe Count…
Thunderstorm Wind Thunderstorm Wind
Thunderstorm winds blew down several large trees and tree limbs at a residence on Ahne Road just northeast of intersection with Kk Road. Also, a small portion of an outbuilding roof was torn off. Further to the east a large section of tree was blown down next to a mobile home.
Thunderstorm Wind Thunderstorm Wind
Thunderstorm winds blew down several trees along Illinois Route 156 between Valmeyer and Foster Pond.
Hail Hail
Tornado EF0 Tornado
A tornado touched down at 6:39 PM CDT just east of intersection of Harris Road and B Road and tracked to the east northeast. There was some minor roof damage to a couple of outbuildings before the tornado crossed Bluff Road, around 2.6 miles south southwest of Valmeyer. For the r…
Thunderstorm Wind Thunderstorm Wind
Thunderstorm winds blew a small section of roof off of an outbuilding.
Tornado EFU Tornado
A tornado briefly touched down in the Mississippi river bottoms on the northwest side of Columbia, IL. The only evidence of this tornado was a video provided via local media. Duration was likely less than 1 minute, no damage or injuries. The tornado was rated EFU with an estimate…
Events by year
| Year | Events | Tornadoes |
|---|---|---|
| 2025 | 23 | 3 |
| 2024 | 12 | 1 |
| 2023 | 17 | 4 |
| 2022 | 4 | 0 |
| 2021 | 2 | 0 |
| 2020 | 3 | 0 |
| 2019 | 10 | 1 |
| 2018 | 10 | 0 |
| 2017 | 13 | 0 |
| 2016 | 12 | 0 |
| 2015 | 9 | 0 |
| 2014 | 9 | 2 |
| 2013 | 7 | 0 |
| 2012 | 19 | 0 |
| 2011 | 25 | 1 |
| 2010 | 26 | 2 |
| 2009 | 4 | 0 |
| 2008 | 24 | 1 |
| 2007 | 9 | 0 |
| 2006 | 28 | 2 |
| 2005 | 11 | 0 |
| 2004 | 10 | 0 |
| 2003 | 15 | 3 |
| 2002 | 15 | 0 |
| 2001 | 12 | 0 |
| 2000 | 8 | 0 |
| 1999 | 5 | 0 |
| 1998 | 16 | 2 |
| 1997 | 7 | 0 |
| 1996 | 15 | 1 |
| 1995 | 14 | 6 |
| 1994 | 3 | 1 |
| 1993 | 6 | 0 |
| 1992 | 5 | 0 |
| 1991 | 3 | 0 |
| 1990 | 2 | 0 |
| 1989 | 1 | 0 |
| 1988 | 2 | 0 |
| 1984 | 2 | 1 |
| 1983 | 1 | 0 |
| 1982 | 2 | 0 |
| 1981 | 3 | 0 |
| 1977 | 3 | 0 |
| 1976 | 3 | 0 |
| 1975 | 3 | 1 |
| 1974 | 3 | 0 |
| 1973 | 1 | 1 |
| 1971 | 1 | 0 |
| 1968 | 3 | 1 |
| 1965 | 2 | 2 |
| 1964 | 1 | 1 |
| 1959 | 1 | 1 |
| 1957 | 2 | 2 |