Jefferson storm history
Storm events recorded in Jefferson, Illinois between 1950 and 2025.
810
Total events
31
Tornadoes
91
Hail
49
Floods
11
Deaths
$29.5M
Property damage
Most significant events
Strongest tornadoes, deadliest events, and biggest damage in this county. Up to 50 shown.
Tornado F3 Tornado
Several streets on the south side of Mt. Vernon had standing water over them. Record flooding occurred on Rayse Creek in southwest Jefferson County. A motorist drowned after driving into the creek flooding on a county road south of Woodlawn. The incident occurred during the early…
Numerous tree limbs and power lines were blown down, along with a couple of large trees. A large tree limb blew across two mobile homes, killing a 72-year-old man who was in the mobile home closest to the tree. The man died from blunt-force trauma caused by the tree limb, which w…
A tied down double wide mobile home was destroyed. A elderly lady was killed and a teenage boy was injured when the mobile home was lofted by the tornado and carried approximately 100 yards to the northeast, with the mobile home undercarriage carried approximately 200 yards. One …
Two persons died after their truck stalled in floodwater on a secondary road near Waltonville. The three occupants of the truck climbed on top of it. One of the victims dropped her purse in the water and dove after it. Two other occupants of the truck dove in to rescue her. One o…
At least three houses lost portions of roof substructure, including roof decking. Numerous other homes sustained various degrees of shingle damage. Some houses lost siding. A total of 101 residences sustained damage, with 23 of those homes deemed uninhabitable. A folded up pop-up…
Widespread very damaging winds, estimated around 90 MPH by a National Weather Service damage surveyor, raked most of Jefferson County. The city of Mount Vernon was especially hard hit, where about 14 percent of all homes received at least minor damage. Several thousands of trees …
Dense Fog Dense Fog
Dense Fog Dense Fog
Frost/Freeze Frost/Freeze
Drought Drought
Dense Fog Dense Fog
Drought Drought
Excessive Heat Excessive Heat
Excessive Heat Excessive Heat
Excessive Heat Excessive Heat
Heat Heat
Dense Fog Dense Fog
Dense Fog Dense Fog
Hail Hail
Nickel size hail fell in Dix.
Hail Hail
Quarter size hail fell for about five minutes and nearly covered the ground on the south side of Mt Vernon.
Strong Wind Strong Wind
Strong Wind Strong Wind
Strong Wind Strong Wind
Cold/Wind Chill Cold/Wind Chill
Cold/Wind Chill Cold/Wind Chill
Winter Weather Winter Weather
Winter Weather Winter Weather
Dense Fog Dense Fog
Cold/Wind Chill Cold/Wind Chill
Winter Storm Winter Storm
Winter Weather Winter Weather
Winter Weather Winter Weather
Frost/Freeze Frost/Freeze
Frost/Freeze Frost/Freeze
Excessive Heat Excessive Heat
Flood Flood
Minor street flooding occurred in Mount Vernon as a quick inch of rainfall, based on radar estimates, fell within an hour.
Excessive Heat Excessive Heat
Thunderstorm Wind Thunderstorm Wind
Trees and power lines were downed by thunderstorm winds near Dix.
Hail Hail
Hail measured to nickel size fell on the southwest side of Mount Vernon.
Flash Flood Flash Flood
Extensive street flooding occurred in Mount Vernon. IL-15 became impassable due to high water just east of Woodlawn. Radar estimated rainfall totals in Mount Vernon were 2.5-4 inches, while totals in western portions of Jefferson County reached 5-7 inches.
Events by year
| Year | Events | Tornadoes |
|---|---|---|
| 2025 | 25 | 0 |
| 2024 | 36 | 1 |
| 2023 | 25 | 0 |
| 2022 | 28 | 0 |
| 2021 | 21 | 0 |
| 2020 | 22 | 1 |
| 2019 | 28 | 0 |
| 2018 | 32 | 0 |
| 2017 | 28 | 1 |
| 2016 | 28 | 0 |
| 2015 | 26 | 0 |
| 2014 | 29 | 2 |
| 2013 | 32 | 1 |
| 2012 | 31 | 1 |
| 2011 | 48 | 3 |
| 2010 | 30 | 1 |
| 2009 | 26 | 2 |
| 2008 | 41 | 1 |
| 2007 | 28 | 0 |
| 2006 | 27 | 0 |
| 2005 | 26 | 1 |
| 2004 | 25 | 1 |
| 2003 | 13 | 0 |
| 2002 | 16 | 1 |
| 2001 | 17 | 1 |
| 2000 | 14 | 0 |
| 1999 | 18 | 0 |
| 1998 | 15 | 1 |
| 1997 | 11 | 0 |
| 1996 | 17 | 1 |
| 1995 | 5 | 1 |
| 1994 | 3 | 0 |
| 1991 | 2 | 0 |
| 1989 | 2 | 0 |
| 1986 | 2 | 0 |
| 1984 | 1 | 0 |
| 1983 | 2 | 1 |
| 1982 | 5 | 1 |
| 1981 | 1 | 0 |
| 1979 | 1 | 0 |
| 1976 | 2 | 0 |
| 1975 | 1 | 0 |
| 1974 | 5 | 0 |
| 1973 | 1 | 1 |
| 1972 | 1 | 0 |
| 1969 | 1 | 0 |
| 1967 | 1 | 0 |
| 1966 | 1 | 1 |
| 1965 | 1 | 0 |
| 1960 | 3 | 1 |
| 1959 | 1 | 1 |
| 1957 | 4 | 4 |
| 1955 | 1 | 0 |