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Flood in Logan County, Illinois
50 floods and flash floods events in the NCEI Storm Events record, 1950 to 2026. Event types counted: Flood, Flash Flood, Coastal Flood, Lakeshore Flood.
NCEI notes that Storm Data is compiled from a variety of sources including the National Weather Service, other federal, state and local agencies, the media and the public; that property and crop damage figures are estimates; and that some events are recorded by NWS forecast zone rather than by county. FEMA notes that NFIP claim records are redacted and aggregated to protect the privacy of policyholders. Storm records through 30 Jun 2026.
Logan County, Illinois, has 50 flood events in the NCEI record since 1950, with at least one in 18 different years.
June is the busiest month, with 21 of the recorded events. The last 20 years account for 33 events against 17 in the 20 years before, a change that reflects reporting practice as much as weather.
The county holds 0.8% of the 6,507 flood events recorded in Illinois; its 8.1 per 100 square miles compares with 11.7 statewide.
NCEI attributes 1 death in the county to floods and flash floods.
Compared with Illinois
| Measure | Logan County | Illinois | US |
|---|---|---|---|
| Flood events since 1950 | 50 | 6,507 | 183,559 |
| Per 100 square miles | 8.1 | 11.7 | 5.2 |
| Per 10,000 residents | 17.9 | 5.1 | 5.5 |
| Deaths recorded | 1 | 61 | 2,961 |
| Busiest month | June | June | June |
By year
Seasonality
1Feb
2Mar
0Apr
3May
7Jun
21Jul
7Aug
6Sep
1Oct
1Nov
1Dec
0
Recorded events
All 50 events, most recent first. Magnitude is hail size, tornado rating or wind speed as recorded.
| Date | Event type | Magnitude | Property damage | Crop damage | Deaths | Injuries | Geography |
|---|---|---|---|---|---|---|---|
| 17 Jun 2026 | Flash Flood | — | — | — | — | — | County |
| 11 Jun 2026 | Flash Flood | — | — | — | — | — | County |
| 22 Sep 2023 | Flash Flood | — | — | — | — | — | County |
| 11 Aug 2023 | Flood | — | — | — | — | — | County |
| 22 Feb 2023 | Flash Flood | — | — | — | — | — | County |
| 11 Jul 2021 | Flash Flood | — | — | — | — | — | County |
| 11 Jul 2021 | Flash Flood | — | — | — | — | — | County |
| 26 Jun 2021 | Flash Flood | — | $300K | — | — | — | County |
| 25 Jun 2021 | Flash Flood | — | — | — | — | — | County |
| 1 May 2019 | Flood | — | — | — | — | — | County |
| 12 Aug 2016 | Flash Flood | — | — | — | — | — | County |
| 28 Jun 2015 | Flash Flood | — | $40K | — | — | — | County |
| 26 Jun 2015 | Flash Flood | — | — | — | — | — | County |
| 7 Jun 2015 | Flash Flood | — | $150K | — | — | — | County |
| 28 Aug 2014 | Flash Flood | — | — | — | — | — | County |
| 20 Feb 2014 | Flash Flood | — | — | — | — | — | County |
| 10 Jul 2013 | Flash Flood | — | — | — | — | — | County |
| 22 Jun 2013 | Flash Flood | — | — | — | — | — | County |
| 1 Jun 2013 | Flash Flood | — | — | — | — | — | County |
| 31 May 2013 | Flash Flood | — | — | — | — | — | County |
| 30 May 2013 | Flash Flood | — | — | — | — | — | County |
| 22 Jun 2010 | Flash Flood | — | — | — | — | — | County |
| 15 Jun 2010 | Flash Flood | — | — | — | — | — | County |
| 12 Jun 2010 | Flash Flood | — | — | — | — | — | County |
| 24 May 2010 | Flash Flood | — | — | — | — | — | County |
| 1 Nov 2009 | Flood | — | — | — | — | — | County |
| 30 Oct 2009 | Flood | — | — | — | 1 | — | County |
| 15 May 2009 | Flash Flood | — | — | — | — | — | County |
| 4 Jun 2008 | Flash Flood | — | — | — | — | — | County |
| 3 Jun 2008 | Flash Flood | — | — | — | — | — | County |
| 3 Jun 2008 | Flash Flood | — | — | — | — | — | County |
| 3 Jun 2008 | Flash Flood | — | — | — | — | — | County |
| 3 Jun 2008 | Flash Flood | — | — | — | — | — | County |
| 12 Jan 2005 | Flash Flood | — | — | — | — | — | County |
| 25 Aug 2004 | Flash Flood | — | — | — | — | — | County |
| 15 Jun 2004 | Flash Flood | — | — | — | — | — | County |
| 24 May 2004 | Flash Flood | — | — | — | — | — | County |
| 21 Jul 2003 | Flash Flood | — | — | — | — | — | County |
| 9 Jul 2003 | Flash Flood | — | — | — | — | — | County |
| 11 Jun 2003 | Flash Flood | — | — | — | — | — | County |
| 16 Aug 2002 | Flash Flood | — | — | — | — | — | County |
| 28 Jul 2002 | Flash Flood | — | — | — | — | — | County |
| 27 Jul 2002 | Flash Flood | — | — | — | — | — | County |
| 7 May 2002 | Flash Flood | — | — | — | — | — | County |
| 27 Apr 2002 | Flash Flood | — | — | — | — | — | County |
| 19 Apr 2002 | Flash Flood | — | — | — | — | — | County |
| 20 Jun 2000 | Flash Flood | — | $35K | — | — | — | County |
| 12 Jun 2000 | Flood | — | — | — | — | — | County |
| 12 Aug 1999 | Flash Flood | — | — | — | — | — | County |
| 29 Apr 1998 | Flash Flood | — | $1.0M | $500K | — | — | County |
Questions and answers
How many flood events has Logan County had?
50 events in the NCEI Storm Events record between 1950 and 2026. Reporting of floods and flash floods became far more complete after 1996, so early decades undercount.
When was the last recorded flood event in Logan County?
17 Jun 2026 (Flash Flood). Records reach NCEI about 120 days after the month ends.
What was the most damaging flood event recorded in Logan County?
The flash flood of 29 Apr 1998, with property damage estimated by NCEI at $1.0M and crop damage at $500K.
How does Logan County compare with Illinois for flood?
8.1 events per 100 square miles against 11.7 statewide; the county holds 50 of the state's 6,507 recorded events.
Provenance
NOAA NCEI Storm Events Database, yearly details files through 30 Jun 2026, public domain. County-recorded events plus zone-recorded events whose forecast zone is named for the county (marked "Forecast zone"). Population and area from the US Census Bureau (2021). Built 1 Oct 2026. See the methodology, the Flood hub and the county page.