Mason County, Illinois
Tornadoes, hail, floods and severe storms recorded here between 1951 and 2026, from NOAA's Storm Events Database. Search an address to see which tornadoes came closest to it.
42
Tornado reports
56
Hail reports
28
Floods since 1996
384
All events
2
Deaths
$13.2M
Property damage
Tornado paths in Mason County
The part of each tornado’s path NOAA recorded in this county, 42 in all. Zoom in and the paths widen to their surveyed width.
EF0EF1EF2EF3EF4EF5Unrated
Year by year
All storm eventsTornadoes
NOAA's storm database records tornadoes back to 1950 and hail and thunderstorm wind back to 1955, but floods only from 1996 on. Older floods are missing here. For those, the U.S. Geological Survey's stream gauge records and flood reports are the place to look.
Most significant events
The strongest tornadoes, deadliest events and biggest damage here, up to 50.
Hundreds of cabins and sheds in wildlife areas along the Illinois River were severely damaged. In addition, 25 homes and several other structures were damaged near Bath, Snicarte, Havana and Goofy Ridge. Nearly 15 miles of roads will need to be rebuilt due to the flooding. The ri…
Thunderstorm Wind Thunderstorm Wind
A trained spotter estimated wind gusts of 75mph.
Thunderstorm Wind Thunderstorm Wind
Several trees were blown down in Havana.
Thunderstorm Wind Thunderstorm Wind
Numerous trees were damaged in Mason City.
Thunderstorm Wind Thunderstorm Wind
A large tree was blown down just west of Mason City near the intersection of IL-10 and IL-29.
Thunderstorm Wind Thunderstorm Wind
An irrigation system was flipped over.
Hail Hail
Hail Hail
Winter Weather Winter Weather
Snow accumulations of 1 to 3 inches were reported across the region, along with westerly wind gusts of 40 to 50 mph. This resulted in blowing snow, slick roadways, and reduced visibility. Numerous accidents were reported across the region, particularly along north-south oriented …
Tornado EF1 Tornado
A tornado touched down on the far east side of Havana near the Laurel Hill Cemetery at 11:52 PM CDT. The tornado tracked northeastward, snapping trees and downing numerous power poles along County Road 2130. A horse barn was partially destroyed and a horse was killed near the int…
Tornado EF1 Tornado
A tornado touched down northeast of the intersection of County Road 2800 East and County Road 2000 North about 1 mile south-southeast of Forest City at 12:06 AM CDT March 11th. The tornado tracked northeastward, overturning several irrigation pivots and snapping trees along its p…
Thunderstorm Wind Thunderstorm Wind
Several trees, power lines, and traffic lights were blown down across Havana as a result of a downburst.
Drought Drought
Due to a multi-month precipitation deficit dating back to Fall of 2025, Severe Drought (D2) was in place at the start of the month. However, above normal precipitation occurred across the region during March. By late March, the drought had improved and was no longer classified as…
Hail Hail
Hail Hail
Hail Hail
Drought Drought
Due to a multi-month precipitation deficit dating back to Fall of 2025, as well as one of the driest Februarys on record, drought conditions worsened and became Severe (D2) during the month. The Severe Drought (D2) then persisted through the end of the month. Streamflows and soil…
Drought Drought
Due to a multi-month precipitation deficit dating back to the Fall of 2025, Severe Drought (D2) was ongoing at the start of the month. An early month disturbance brought almost an inch of rain, resulting in modest improvement in the drought by mid-January.
Thunderstorm Wind Thunderstorm Wind
Power lines were blown down on Jacobs Road between Manito and Green Valley.
Heavy Snow Heavy Snow
Weather observers measured 6 to 8 inches of snow across Mason County...including 7.5 inches in Manito and 7.0 inches in Havana. Due to snow-covered and slick roadways, numerous traffic accidents occurred.
Drought Drought
Due to a four-month precipitation deficit, Severe Drought (D2) was ongoing at the start of the month. Despite above normal snowfall during December, precipitation was still below normal, and the continued below normal precipitation led to the Severe Drought (D2) persisting throug…
Heavy Snow Heavy Snow
Numerous weather observers measured 5 to 10 inches of snow across Mason County...including 7.8 inches in Havana. Due to both falling snow and considerable blowing and drifting snow, travel became extremely hazardous...leading to numerous accidents on area roadways.
Drought Drought
Due to a three-month precipitation deficit, Severe Drought (D2) was ongoing at the start of the month. Continued below normal precipitation and above normal temperatures led to the Severe Drought (D2) persisting through the month.
Drought Drought
Due to a two-month rainfall deficit, Severe Drought (D2) was ongoing at the start of the month. Continued below normal precipitation and above normal temperatures led to the Severe Drought (D2) persisting through the month.
Tornado EF0 Tornado
A tornado touched down in a field 2 miles east-northeast of Mason City at 3:09 PM CDT. It tracked slowly southeastward through fields causing minor tree damage before crossing Highway 10 and dissipating 2 miles west of New Holland at 3:15 PM CDT.
Drought Drought
Due to a two-month rainfall deficit, Severe Drought (D2) conditions developed across Mason County on September 30th.
Tornado EF0 Tornado
A brief EF-0 tornado occurred approximately two miles northeast of Mason City. The tornado knocked over one tree, and also blew down a few tree limbs and corn along County Road 1200 N before dissipating.
Thunderstorm Wind Thunderstorm Wind
A tree was blown onto a power line along County Road 750 North.
Thunderstorm Wind Thunderstorm Wind
Thunderstorm winds resulted in structural damage to the porch of a home.
High Wind High Wind
A power pole was snapped due to high winds, resulting in a road closure.
Winter Weather Winter Weather
Weather observers measured 1 to 3 inches of snow across Mason County. Due to snow-covered roadways, several traffic accidents were reported.
Heavy Snow Heavy Snow
Weather observers measured 6 to 8 inches of snow across the southern half of Mason County...including 6.0 inches in Bath. Due to snow-covered and hazardous roadways, numerous traffic accidents were reported.
Excessive Heat Excessive Heat
Heat index readings peaked at 110-115 degrees during the afternoon of August 27th. No heat-related deaths were reported.
Thunderstorm Wind Thunderstorm Wind
Several large tree branches were blown down in Riverfront Park.
Thunderstorm Wind Thunderstorm Wind
Minor damage occurred to shingles and siding of a house.
Thunderstorm Wind Thunderstorm Wind
Trees blown down onto the road, blocking traffic between Goofy Ridge and Bishop.
Hail Hail
Hail Hail
Hail Hail
Hail Hail
Hail Hail
Winter Weather Winter Weather
A period of freezing rain resulted in ice accumulations less than a quarter inch. There were numerous car accidents or slide-offs. Transportation services were also impacted across the region, with many bus, train, or airplane operators suspending operations. Conditions improved …
Extreme Cold/Wind Chill Extreme Cold/Wind Chill
Brisk northwesterly winds in conjunction with air temperatures dipping below zero resulted in dangerously cold wind-chill values bottoming out at 25 below to 35 below zero at times.
Thunderstorm Wind Thunderstorm Wind
Numerous tree branches and a few trees were snapped in Mason City.
Excessive Heat Excessive Heat
A prolonged stretch of dangerous heat and humidity occurred across the Midwest. Peak afternoon heat indices were near or over 110 degrees each day, and heat indices remained above 80 degrees overnight. A mesonet station two miles southeast of Topeka and a mesonet station in Snica…
Drought Drought
Severe Drought (D2) conditions lingered across Mason County into the first week of August. Agricultural stress was common.
Events by year, as a table
| Year | Events | Tornadoes |
|---|---|---|
| 2026 | 17 | 2 |
| 2025 | 14 | 2 |
| 2024 | 11 | 0 |
| 2023 | 8 | 0 |
| 2022 | 9 | 2 |
| 2021 | 4 | 1 |
| 2020 | 8 | 0 |
| 2019 | 9 | 0 |
| 2018 | 8 | 2 |
| 2017 | 10 | 1 |
| 2016 | 6 | 0 |
| 2015 | 13 | 1 |
| 2014 | 13 | 0 |
| 2013 | 5 | 0 |
| 2012 | 9 | 0 |
| 2011 | 12 | 1 |
| 2010 | 11 | 0 |
| 2009 | 6 | 1 |
| 2008 | 11 | 0 |
| 2007 | 7 | 0 |
| 2006 | 16 | 0 |
| 2005 | 5 | 0 |
| 2004 | 9 | 0 |
| 2003 | 13 | 4 |
| 2002 | 9 | 0 |
| 2001 | 10 | 1 |
| 2000 | 6 | 0 |
| 1999 | 13 | 1 |
| 1998 | 26 | 4 |
| 1997 | 16 | 0 |
| 1996 | 9 | 2 |
| 1995 | 2 | 0 |
| 1994 | 5 | 0 |
| 1993 | 1 | 0 |
| 1992 | 6 | 0 |
| 1991 | 4 | 0 |
| 1990 | 2 | 1 |
| 1988 | 1 | 0 |
| 1987 | 2 | 1 |
| 1986 | 4 | 0 |
| 1985 | 2 | 1 |
| 1982 | 1 | 0 |
| 1981 | 4 | 1 |
| 1980 | 1 | 0 |
| 1977 | 5 | 0 |
| 1976 | 1 | 0 |
| 1975 | 1 | 1 |
| 1974 | 7 | 2 |
| 1973 | 1 | 1 |
| 1972 | 1 | 1 |
| 1968 | 1 | 1 |
| 1967 | 2 | 2 |
| 1966 | 1 | 0 |
| 1964 | 2 | 1 |
| 1961 | 1 | 1 |
| 1957 | 2 | 2 |
| 1951 | 1 | 1 |
Search your address
See every tornado that passed within 25 miles of a place in Mason County, measured to its path.
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