Tornado events in Iroquois County, Illinois The tornado events on record, by date and by year

This page is a county record of past events and claims. It does not show the flood zone or the risk of an address. For the flood map of an address, use FEMA's address search (opens in a new tab).

NCEI has 64 tornado events on record for Iroquois County, Illinois, from 1950 through 30 Jun 2026.

The newest tornado event on record is on 11 Jun 2026.

From 2016 through 2025, NCEI has 16 tornado events on record for the county.

The NWS collects event reports from a variety of sources, which include (but are not limited to): county, state, and federal emergency management officials, local law enforcement officials, SKYWARN spotters, NWS damage surveys, newspaper clipping services, the insurance industry, and the general public, among others.
The National Weather Service reports property and crop damage estimates using available data at the time of event reporting. These values should therefore be considered broad estimates. Damage amounts are not adjusted for inflation.
The words of the agency. Source: NOAA NCEI, Storm Events Database, page "Frequently Asked Questions", copied on 2 Oct 2026.

Date of the data: NCEI storm events through 30 Jun 2026. Event types on this page: Tornado.

Newest tornado events on record

Jun 11 2026

TornadoEF0

1 mile SSW of WATSEKA

TornadoEF1

3 miles ENE of WELLINGTON

TornadoEF1

2 miles SSE of BAYLES LAKE

Apr 22 2026

TornadoEF unrated

2 miles ESE of BEAVERVILLE

Apr 17 2026

TornadoEF1

3 miles SE of WOODLAND

TornadoEF1

2 miles NW of LAKE IROQUOIS

TornadoEF0

At WOODLAND

Dec 28 2025

TornadoEF unrated

3 miles SW of MARTINTON

TornadoEF0

2 miles SSE of CHEBANSE

TornadoEF1

2 miles ENE of CLIFTON

TornadoEF0

6 miles WNW of ASHKUM

May 14 2025

TornadoEF unrated

1 mile SW of CLIFTON

Apr 2 2025

TornadoEF0

3 miles WSW of CISSNA PARK

TornadoEF1

2 miles SSE of LODA

Mar 31 2023

TornadoEF1

2 miles SSW of FOUNTAIN CREEK

TornadoEF1

3 miles SSW of STOCKLAND

Oct 3 2021

TornadoEF unrated

5 miles NW of ASHKUM

Jun 25 2021

TornadoEF1

1 mile WSW of CLASSEN FIELD AIRPORT

Jun 9 2020

TornadoEF unrated

3 miles W of RIDGEVILLE

Jul 21 2019

TornadoEF unrated

3 miles WSW of FREEDVILLE

Jun 30 2019

TornadoEF unrated

1 mile SE of GILMAN

Jun 22 2016

TornadoEF1

2 miles NW of CISSNA PARK

TornadoEF1

3 miles W of CLIFTON

Nov 17 2013

TornadoEF0

1 mile S of WELLINGTON. Damage estimate: $20 thousand

TornadoEF0

5 miles ESE of FOUNTAIN CREEK

A place is the text of the NCEI record: a distance and a direction from a reference place. The site does not show a place text that names a private property or reads as a person. A tornado before February 2007 has a rating on the Fujita scale (F). A later tornado has a rating on the Enhanced Fujita scale (EF).

Tornado events by year

Tornado events on record for Iroquois County by year, 1950 to 2026
Decade	Year that ends in 0	Year that ends in 1	Year that ends in 2	Year that ends in 3	Year that ends in 4	Year that ends in 5	Year that ends in 6	Year that ends in 7	Year that ends in 8	Year that ends in 9	All
1950s	0	0	0	0	1	0	2	0	0	1	4
1960s	0	1	0	0	0	2	0	0	1	0	4
1970s	0	0	1	2	2	1	2	0	0	1	9
1980s	1	0	1	0	0	0	0	1	0	0	3
1990s	2	1	2	0	1	2	0	0	0	1	9
2000s	1	1	0	0	1	0	4	0	0	1	8
2010s	1	0	1	2	0	0	2	0	0	2	8
2020s	1	2	0	2	0	7	7 (part of the year)				19

A darker cell has a larger count. The number is in each cell.

Tornado events are on record from 1950. The year 2026 has the events through 30 Jun 2026 only.

By month, all years

Jan0 events
Feb1 event
Mar5 events
Apr14 events
May12 events
Jun17 events
Jul3 events
Aug2 events
Sep1 event
Oct2 events
Nov2 events
Dec5 events

Magnitudes on record

Tornado events on record for Iroquois County by rating
Rating	Wind estimate of the scale	Events
EF0 or F0	65 to 85 mph (EF0)	23
EF1 or F1	86 to 110 mph (EF1)	23
EF2 or F2	111 to 135 mph (EF2)	9
EF3 or F3	136 to 165 mph (EF3)	2
EF4 or F4	166 to 200 mph (EF4)	0
EF5 or F5	more than 200 mph (EF5)	0
Unrated	no rating on record	7

Tornadoes may contain multiple segments. A tornado that crosses a county line or state line is considered a separate segment.

The words of the agency. Source: NOAA NCEI, Storm Events Database, page "Frequently Asked Questions", copied on 2 Oct 2026.

The Enhanced F-scale still is a set of wind estimates (not measurements) based on damage.

The words of the agency. Source: NOAA NWS Storm Prediction Center, Enhanced Fujita Tornado Damage Scale, copied on 2 Oct 2026.

The wind estimates are those of the Enhanced Fujita scale.

Beside the other counties

Tornado events on record: Iroquois County beside the total of the counties of Illinois and of the United States
Measure	Iroquois	All counties of Illinois	All counties of the United States
Tornado events, 1950 to 2026	64	3,647	81,254
Events for each 100 square miles	5.7	6.6	2.3
Events for each 10,000 residents	23.9	2.9	2.4

The columns for the state and the United States total the counties. They count the events of each county in the same way as the county column. A forecast zone with another name than a county counts for the state only.

More tornado events on record

Tornado events on record for Iroquois County, newest first, without the 25 newest events above
Date	Event type	Magnitude	Damage estimate	Injuries	On record for
6 May 2012	Tornado	EF1	$25 thousand	0	County
21 Jun 2010	Tornado	EF0	none	0	County
19 Aug 2009	Tornado	EF1	$100 thousand	0	County
16 Apr 2006	Tornado	F0	none	0	County
16 Apr 2006	Tornado	F0	none	0	County
16 Apr 2006	Tornado	F0	none	0	County
16 Feb 2006	Tornado	F1	$20 thousand	0	County
20 Apr 2004	Tornado	F0	none	0	County
26 May 2001	Tornado	F0	none	0	County
18 May 2000	Tornado	F0	none	0	County
12 Jun 1999	Tornado	F0	none	0	County
27 Jun 1995	Tornado	F1	$10 thousand	0	County
13 May 1995	Tornado	F0	$5 thousand	0	County
26 Apr 1994	Tornado	F1	$50 thousand	0	County
17 Jun 1992	Tornado	F2	$250 thousand	1	County
17 Jun 1992	Tornado	F1	$25 thousand	0	County
22 Mar 1991	Tornado	F1	$2.5 million	0	County
3 Oct 1990	Tornado	F1	$2.5 million	0	County
22 Jun 1990	Tornado	F2	$250 thousand	0	County
15 Jul 1987	Tornado	F1	$25 thousand	0	County
16 May 1982	Tornado	F0	none	0	County
24 May 1980	Tornado	F0	none	0	County
14 Jul 1979	Tornado	F1	$250 thousand	0	County
23 Apr 1976	Tornado	F2	$25 thousand	0	County
23 Apr 1976	Tornado	F2	$25 thousand	0	County
24 May 1975	Tornado	F2	$25 thousand	0	County
20 Jun 1974	Tornado	F0	none	0	County
20 Jun 1974	Tornado	F0	none	0	County
4 Dec 1973	Tornado	F1	none	0	County
31 Mar 1973	Tornado	F2	$25 thousand	0	County
6 Apr 1972	Tornado	F0	$250	0	County
15 May 1968	Tornado	F3	$2.5 million	0	County
14 Sep 1965	Tornado	F2	$25 thousand	2	County
27 Aug 1965	Tornado	F0	$250	0	County
10 Jun 1961	Tornado	F0	none	0	County
26 May 1959	Tornado	F1	$250	0	County
21 May 1956	Tornado	F2	$25 thousand	0	County
6 Mar 1956	Tornado	F3	$250 thousand	6	County
31 May 1954	Tornado	F2	$250 thousand	2	County

The table has all other events on record. A damage figure is an estimate in the NCEI record.

Official channels

NCEI Storm Events Database (opens in a new tab)Search the full NCEI record by state, county and date.
National Weather Service: Chicago, IL (opens in a new tab)The forecast office that issues the weather warnings for the county.
FEMA Flood Map Service Center: Search By Address (opens in a new tab)Search an address to see its flood map. This site has no flood-zone data.

These links open the pages of the agencies. The site checked the links on 2 Oct 2026.

Cite this page

County Hazards. "Tornado events on record for Iroquois County, Illinois". https://countyhazards.com/county/il/iroquois/tornado/. Data: NOAA NCEI Storm Events Database through 30 Jun 2026. Page made on 2 Oct 2026.

Questions

Which month has the most tornado events on record for Iroquois County?: June has 17 of the 64 tornado events on record from 1950 through 30 Jun 2026.
How many tornado events are on record for Illinois?: NCEI has 3,647 tornado events on record for Illinois from 1950 through 30 Jun 2026. That count has every forecast zone of the state.
How does Iroquois County compare with the other counties of Illinois?: The counties of Illinois have 6.6 tornado events for each 100 square miles. Iroquois County has 5.7.
Which tornado ratings are on record for Iroquois County?: 46 tornado events have a rating of EF0, F0, EF1 or F1. 11 events have a higher rating. 7 events have no rating.