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Flood in Monroe County, Michigan
38 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.
Monroe County, Michigan, has 38 flood events in the NCEI record since 1950, with at least one in 17 different years.
May is the busiest month, with 8 of the recorded events. The last 20 years account for 25 events against 13 in the 20 years before, a change that reflects reporting practice as much as weather.
The county holds 2.9% of the 1,305 flood events recorded in Michigan; its 6.9 per 100 square miles compares with 2.3 statewide.
NCEI attributes 3 deaths in the county to floods and flash floods.
Compared with Michigan
| Measure | Monroe County | Michigan | US |
|---|---|---|---|
| Flood events since 1950 | 38 | 1,305 | 183,559 |
| Per 100 square miles | 6.9 | 2.3 | 5.2 |
| Per 10,000 residents | 2.4 | 1.3 | 5.5 |
| Deaths recorded | 3 | 12 | 2,961 |
| Busiest month | May | May | June |
By year
Seasonality
3Feb
6Mar
3Apr
6May
8Jun
6Jul
1Aug
2Sep
1Oct
1Nov
1Dec
0
Recorded events
All 38 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 |
|---|---|---|---|---|---|---|---|
| 24 Aug 2023 | Flash Flood | — | — | — | — | — | County |
| 24 Aug 2023 | Flood | — | $1.0M | — | — | — | County |
| 28 May 2021 | Lakeshore Flood | — | — | — | — | — | Forecast zone |
| 12 Jun 2020 | Lakeshore Flood | — | — | — | — | — | Forecast zone |
| 16 May 2020 | Lakeshore Flood | — | — | — | — | — | Forecast zone |
| 13 May 2020 | Lakeshore Flood | — | — | — | — | — | Forecast zone |
| 5 May 2020 | Lakeshore Flood | — | — | — | — | — | Forecast zone |
| 26 Apr 2020 | Lakeshore Flood | — | — | — | — | — | Forecast zone |
| 23 Apr 2020 | Lakeshore Flood | — | — | — | — | — | Forecast zone |
| 22 Mar 2020 | Lakeshore Flood | — | — | — | — | — | Forecast zone |
| 5 Feb 2020 | Lakeshore Flood | — | — | — | — | — | Forecast zone |
| 11 Jan 2020 | Flood | — | — | — | — | — | County |
| 1 Nov 2019 | Flood | — | $4.0M | — | — | — | County |
| 3 Oct 2019 | Lakeshore Flood | — | — | — | — | — | Forecast zone |
| 7 Jul 2019 | Lakeshore Flood | — | — | — | — | — | Forecast zone |
| 12 Jun 2019 | Lakeshore Flood | — | — | — | — | — | Forecast zone |
| 8 Jun 2019 | Lakeshore Flood | — | — | — | — | — | Forecast zone |
| 12 May 2019 | Lakeshore Flood | — | — | — | — | — | Forecast zone |
| 8 May 2019 | Lakeshore Flood | — | — | — | — | — | Forecast zone |
| 14 Apr 2019 | Lakeshore Flood | — | — | — | — | — | Forecast zone |
| 11 Apr 2019 | Lakeshore Flood | — | — | — | — | — | Forecast zone |
| 15 Apr 2018 | Lakeshore Flood | — | $5.0M | — | — | — | Forecast zone |
| 10 Sep 2014 | Flash Flood | — | $50K | — | — | — | County |
| 10 Mar 2009 | Flood | — | $3.0M | — | — | — | County |
| 18 Feb 2008 | Flood | — | — | — | — | — | County |
| 21 Jun 2006 | Flash Flood | — | $50K | — | — | — | County |
| 15 Feb 2005 | Flood | — | — | — | — | — | Forecast zone |
| 21 Jan 2005 | Flood | — | — | — | — | — | Forecast zone |
| 23 May 2004 | Flood | — | — | — | — | — | Forecast zone |
| 21 Jun 2002 | Flash Flood | — | — | — | — | — | County |
| 10 Feb 2001 | Flood | — | $25K | — | 3 | — | Forecast zone |
| 18 May 2000 | Flash Flood | — | $30K | — | — | — | County |
| 24 Jan 1999 | Flood | — | $25K | — | — | — | Forecast zone |
| 9 Apr 1998 | Flood | — | $500K | — | — | — | Forecast zone |
| 21 Feb 1998 | Flood | — | — | — | — | — | Forecast zone |
| 17 Feb 1998 | Flood | — | — | — | — | — | Forecast zone |
| 1 Jun 1997 | Flood | — | $50K | — | — | — | Forecast zone |
| 14 Mar 1997 | Flood | — | $50K | — | — | — | Forecast zone |
Questions and answers
How many flood events has Monroe County had?
38 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 Monroe County?
24 Aug 2023 (Flood). Records reach NCEI about 120 days after the month ends.
What was the most damaging flood event recorded in Monroe County?
The lakeshore flood of 15 Apr 2018, with property damage estimated by NCEI at $5.0M.
How does Monroe County compare with Michigan for flood?
6.9 events per 100 square miles against 2.3 statewide; the county holds 38 of the state's 1,305 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.