States › Massachusetts › Middlesex County › Flood
Flood in Middlesex County, Massachusetts
225 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.
NCEI records 225 flood events in Middlesex County, Massachusetts, between 1950 and 2026, spread over 27 years.
July is the busiest month, with 50 of the recorded events. The last 20 years account for 190 events against 35 in the 20 years before, a change that reflects reporting practice as much as weather.
The county holds 11.9% of the 1,890 flood events recorded in Massachusetts; its 27.5 per 100 square miles compares with 24.2 statewide.
Compared with Massachusetts
| Measure | Middlesex County | Massachusetts | US |
|---|---|---|---|
| Flood events since 1950 | 225 | 1,890 | 183,559 |
| Per 100 square miles | 27.5 | 24.2 | 5.2 |
| Per 10,000 residents | 1.4 | 2.7 | 5.5 |
| Deaths recorded | 0 | 3 | 2,961 |
| Busiest month | July | July | June |
By year
Seasonality
3Feb
2Mar
7Apr
8May
6Jun
40Jul
50Aug
38Sep
39Oct
23Nov
4Dec
5
Recorded events
The 184 events kept for this page are the 120 most recent plus the 80 with the most damage, deaths or injuries out of 225. Magnitude is hail size, tornado rating or wind speed as recorded.
| Date | Event type | Magnitude | Property damage | Crop damage | Deaths | Injuries | Geography |
|---|---|---|---|---|---|---|---|
| 7 Jun 2025 | Flash Flood | — | — | — | — | — | County |
| 26 Jun 2024 | Flash Flood | — | — | — | — | — | County |
| 9 Jan 2024 | Flood | — | — | — | — | — | County |
| 11 Sep 2023 | Flood | — | — | — | — | — | County |
| 11 Sep 2023 | Flood | — | — | — | — | — | County |
| 10 Sep 2023 | Flood | — | — | — | — | — | County |
| 10 Sep 2023 | Flood | — | — | — | — | — | County |
| 10 Sep 2023 | Flood | — | — | — | — | — | County |
| 18 Aug 2023 | Flash Flood | — | — | — | — | — | County |
| 18 Aug 2023 | Flood | — | — | — | — | — | County |
| 18 Aug 2023 | Flash Flood | — | — | — | — | — | County |
| 18 Aug 2023 | Flash Flood | — | — | — | — | — | County |
| 8 Aug 2023 | Flood | — | — | — | — | — | County |
| 8 Aug 2023 | Flood | — | — | — | — | — | County |
| 8 Aug 2023 | Flood | — | — | — | — | — | County |
| 8 Aug 2023 | Flood | — | — | — | — | — | County |
| 8 Aug 2023 | Flood | — | — | — | — | — | County |
| 8 Aug 2023 | Flood | — | — | — | — | — | County |
| 8 Aug 2023 | Flood | — | — | — | — | — | County |
| 8 Aug 2023 | Flood | — | — | — | — | — | County |
| 8 Aug 2023 | Flood | — | — | — | — | — | County |
| 29 Jul 2023 | Flash Flood | — | — | — | — | — | County |
| 21 Jul 2023 | Flash Flood | — | — | — | — | — | County |
| 21 Jul 2023 | Flash Flood | — | — | — | — | — | County |
| 21 Jul 2023 | Flash Flood | — | — | — | — | — | County |
| 21 Jul 2023 | Flash Flood | — | — | — | — | — | County |
| 21 Jul 2023 | Flash Flood | — | — | — | — | — | County |
| 21 Jul 2023 | Flash Flood | — | — | — | — | — | County |
| 21 Jul 2023 | Flash Flood | — | — | — | — | — | County |
| 21 Jul 2023 | Flash Flood | — | — | — | — | — | County |
| 21 Jul 2023 | Flash Flood | — | — | — | — | — | County |
| 21 Jul 2023 | Flash Flood | — | — | — | — | — | County |
| 21 Jul 2023 | Flash Flood | — | — | — | — | — | County |
| 21 Jul 2023 | Flash Flood | — | — | — | — | — | County |
| 16 Jul 2023 | Flood | — | — | — | — | — | County |
| 16 Jul 2023 | Flash Flood | — | — | — | — | — | County |
| 10 Jul 2023 | Flood | — | — | — | — | — | County |
| 26 Jun 2023 | Flood | — | $500 | — | — | — | County |
| 2 Jun 2023 | Flash Flood | — | $200 | — | — | — | County |
| 20 May 2023 | Flood | — | — | — | — | — | County |
| 5 Sep 2022 | Flood | — | — | — | — | — | County |
| 5 Sep 2022 | Flood | — | — | — | — | — | County |
| 5 Sep 2022 | Flood | — | — | — | — | — | County |
| 5 Sep 2022 | Flood | — | — | — | — | — | County |
| 7 Aug 2022 | Flood | — | — | — | — | — | County |
| 5 Aug 2022 | Flood | — | — | — | — | — | County |
| 12 Nov 2021 | Flood | — | $5K | — | — | — | County |
| 12 Nov 2021 | Flood | — | $5K | — | — | — | County |
| 2 Sep 2021 | Flood | — | — | — | — | — | County |
| 2 Sep 2021 | Flood | — | — | — | — | — | County |
| 2 Sep 2021 | Flash Flood | — | $400K | — | — | — | County |
| 9 Jul 2021 | Flood | — | — | — | — | — | County |
| 9 Jul 2021 | Flood | — | — | — | — | — | County |
| 10 Sep 2020 | Flood | — | $3K | — | — | — | County |
| 10 Sep 2020 | Flood | — | — | — | — | — | County |
| 10 Sep 2020 | Flood | — | — | — | — | — | County |
| 23 Jul 2020 | Flood | — | — | — | — | — | County |
| 28 Jun 2020 | Flood | — | — | — | — | — | County |
| 28 Jun 2020 | Flood | — | — | — | — | — | County |
| 28 Jun 2020 | Flood | — | $5K | — | — | — | County |
| 28 Jun 2020 | Flood | — | — | — | — | — | County |
| 21 Jun 2020 | Flood | — | — | — | — | — | County |
| 21 Jun 2020 | Flood | — | — | — | — | — | County |
| 2 Sep 2019 | Flood | — | — | — | — | — | County |
| 2 Sep 2019 | Flood | — | — | — | — | — | County |
| 2 Sep 2019 | Flood | — | — | — | — | — | County |
| 2 Sep 2019 | Flood | — | — | — | — | — | County |
| 2 Sep 2019 | Flood | — | — | — | — | — | County |
| 2 Sep 2019 | Flood | — | — | — | — | — | County |
| 7 Aug 2019 | Flood | — | $300 | — | — | — | County |
| 7 Aug 2019 | Flood | — | — | — | — | — | County |
| 7 Aug 2019 | Flood | — | — | — | — | — | County |
| 6 Jul 2019 | Flood | — | — | — | — | — | County |
| 6 Jul 2019 | Flood | — | — | — | — | — | County |
| 6 Jul 2019 | Flood | — | — | — | — | — | County |
| 10 Nov 2018 | Flood | — | — | — | — | — | County |
| 3 Nov 2018 | Flood | — | — | — | — | — | County |
| 29 Oct 2018 | Flood | — | — | — | — | — | County |
| 18 Sep 2018 | Flash Flood | — | — | — | — | — | County |
| 18 Sep 2018 | Flash Flood | — | — | — | — | — | County |
| 18 Sep 2018 | Flash Flood | — | — | — | — | — | County |
| 18 Sep 2018 | Flash Flood | — | — | — | — | — | County |
| 18 Sep 2018 | Flash Flood | — | — | — | — | — | County |
| 18 Sep 2018 | Flash Flood | — | — | — | — | — | County |
| 18 Sep 2018 | Flash Flood | — | — | — | — | — | County |
| 17 Aug 2018 | Flood | — | — | — | — | — | County |
| 12 Aug 2018 | Flood | — | $5K | — | — | — | County |
| 12 Aug 2018 | Flood | — | $15K | — | — | — | County |
| 12 Aug 2018 | Flood | — | $5K | — | — | — | County |
| 12 Aug 2018 | Flood | — | — | — | — | — | County |
| 12 Aug 2018 | Flood | — | $5K | — | — | — | County |
| 8 Aug 2018 | Flood | — | — | — | — | — | County |
| 8 Aug 2018 | Flood | — | $5K | — | — | — | County |
| 8 Aug 2018 | Flood | — | $30K | — | — | — | County |
| 26 Jul 2018 | Flash Flood | — | — | — | — | — | County |
| 17 Jul 2018 | Flash Flood | — | — | — | — | — | County |
| 17 Jul 2018 | Flash Flood | — | — | — | — | — | County |
| 25 Jun 2018 | Flood | — | — | — | — | — | County |
| 25 Jun 2018 | Flood | — | — | — | — | — | County |
| 25 Jun 2018 | Flood | — | — | — | — | — | County |
| 25 Jun 2018 | Flood | — | — | — | — | — | County |
| 25 Jun 2018 | Flood | — | — | — | — | — | County |
| 25 Jun 2018 | Flood | — | $15K | — | — | — | County |
| 25 Jun 2018 | Flood | — | — | — | — | — | County |
| 25 Jun 2018 | Flood | — | — | — | — | — | County |
| 16 Apr 2018 | Flood | — | — | — | — | — | County |
| 16 Apr 2018 | Flood | — | — | — | — | — | County |
| 16 Apr 2018 | Flood | — | — | — | — | — | County |
| 16 Apr 2018 | Flood | — | — | — | — | — | County |
| 13 Jan 2018 | Flood | — | — | — | — | — | County |
| 12 Jan 2018 | Flood | — | — | — | — | — | County |
| 30 Oct 2017 | Flood | — | — | — | — | — | County |
| 25 Oct 2017 | Flood | — | — | — | — | — | County |
| 25 Oct 2017 | Flood | — | — | — | — | — | County |
| 2 Aug 2017 | Flood | — | $5K | — | — | — | County |
| 2 Aug 2017 | Flood | — | — | — | — | — | County |
| 18 Jul 2017 | Flood | — | — | — | — | — | County |
| 18 Jul 2017 | Flood | — | — | — | — | — | County |
| 18 Jul 2017 | Flood | — | — | — | — | — | County |
| 12 Jul 2017 | Flood | — | — | — | — | — | County |
| 12 Jul 2017 | Flood | — | $1.0M | — | — | — | County |
| 27 Jun 2017 | Flood | — | $1K | — | — | — | County |
| 21 Oct 2016 | Flash Flood | — | $10K | — | — | — | County |
| 15 Aug 2015 | Flood | — | $75K | — | — | — | County |
| 15 Aug 2015 | Flood | — | $50K | — | — | — | County |
| 9 Dec 2014 | Flood | — | $30K | — | — | — | County |
| 9 Dec 2014 | Flood | — | $5K | — | — | — | County |
| 23 Oct 2014 | Flash Flood | — | $45K | — | — | — | County |
| 22 Oct 2014 | Flood | — | $20K | — | — | — | County |
| 1 Aug 2014 | Flash Flood | — | $30K | — | — | — | County |
| 28 Jul 2014 | Flash Flood | — | $50K | — | — | — | County |
| 28 Jul 2014 | Flash Flood | — | $5K | — | — | — | County |
| 28 Jul 2014 | Flash Flood | — | $1K | — | — | — | County |
| 16 Jul 2014 | Flash Flood | — | $20K | — | — | — | County |
| 15 Jul 2014 | Flash Flood | — | $2K | — | — | — | County |
| 30 Mar 2014 | Flood | — | $35K | — | — | — | County |
| 1 Sep 2013 | Flash Flood | — | $30K | — | — | — | County |
| 1 Sep 2013 | Flood | — | $10K | — | — | — | County |
| 20 Oct 2012 | Flash Flood | — | $100K | — | — | — | County |
| 18 Jul 2012 | Flood | — | $5K | — | — | — | County |
| 23 Jun 2012 | Flood | — | $15K | — | — | — | County |
| 28 Aug 2011 | Flood | — | $5K | — | — | — | County |
| 10 Jul 2010 | Flash Flood | — | $11M | — | — | — | County |
| 29 Mar 2010 | Flood | — | $8.8M | — | — | — | County |
| 14 Mar 2010 | Flood | — | $26M | — | — | — | County |
| 7 Jul 2009 | Flash Flood | — | $50K | — | — | — | County |
| 12 Dec 2008 | Flood | — | $20K | — | — | — | County |
| 6 Sep 2008 | Flood | — | $15K | — | — | — | County |
| 10 Aug 2008 | Flood | — | $40K | — | — | — | County |
| 10 Aug 2008 | Flood | — | $15K | — | — | — | County |
| 29 Jun 2008 | Flood | — | $5K | — | — | — | County |
| 24 Jun 2008 | Flood | — | $10K | — | — | — | County |
| 27 May 2008 | Flood | — | $3K | — | — | — | County |
| 16 Apr 2007 | Flood | — | $25K | — | — | — | County |
| 28 Oct 2006 | Flood | — | $5K | — | — | — | County |
| 11 Jul 2006 | Flood | — | $2K | — | — | — | County |
| 23 Jun 2006 | Flash Flood | — | $10K | — | — | — | County |
| 13 May 2006 | Flood | — | $5.0M | — | — | — | County |
| 6 Jul 2005 | Flash Flood | — | $20K | — | — | — | County |
| 7 Aug 2003 | Flash Flood | — | $25K | — | — | — | County |
| 10 Sep 1999 | Flash Flood | — | — | — | — | — | County |
| 16 Jun 1998 | Flash Flood | — | — | — | — | — | County |
| 15 Jun 1998 | Flash Flood | — | — | — | — | — | County |
| 15 Jun 1998 | Flash Flood | — | — | — | — | — | County |
| 14 Jun 1998 | Flash Flood | — | $570K | — | — | — | County |
| 14 Jun 1998 | Flash Flood | — | $570K | — | — | — | County |
| 13 Jun 1998 | Flash Flood | — | $570K | — | — | — | County |
| 13 Jun 1998 | Flash Flood | — | $570K | — | — | — | County |
| 13 Jun 1998 | Flash Flood | — | $570K | — | — | — | County |
| 13 Jun 1998 | Flash Flood | — | $570K | — | — | — | County |
| 13 Jun 1998 | Flash Flood | — | $570K | — | — | — | County |
| 24 Feb 1998 | Flash Flood | — | — | — | — | — | County |
| 21 Oct 1996 | Flash Flood | — | — | — | — | — | County |
| 21 Oct 1996 | Flash Flood | — | — | — | — | — | County |
| 21 Oct 1996 | Flash Flood | — | — | — | — | — | County |
| 21 Oct 1996 | Flash Flood | — | — | — | — | — | County |
| 21 Oct 1996 | Flash Flood | — | — | — | — | — | County |
| 21 Oct 1996 | Flash Flood | — | — | — | — | — | County |
| 21 Oct 1996 | Flash Flood | — | — | — | — | — | County |
| 21 Oct 1996 | Flash Flood | — | — | — | — | — | County |
| 21 Oct 1996 | Flash Flood | — | — | — | — | — | County |
| 21 Oct 1996 | Flash Flood | — | — | — | — | — | County |
| 20 Oct 1996 | Flash Flood | — | — | — | — | — | County |
| 18 Sep 1996 | Flood | — | — | — | — | — | County |
Questions and answers
How many flood events has Middlesex County had?
225 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 Middlesex County?
7 Jun 2025 (Flash Flood). Records reach NCEI about 120 days after the month ends.
What was the most damaging flood event recorded in Middlesex County?
The flood of 14 Mar 2010, with property damage estimated by NCEI at $26M.
How does Middlesex County compare with Massachusetts for flood?
27.5 events per 100 square miles against 24.2 statewide; the county holds 225 of the state's 1,890 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.