States › New York › Suffolk County › Flood
Flood in Suffolk County, New York
253 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 253 flood events in Suffolk County, New York, between 1950 and 2026, spread over 30 years.
August is the busiest month, with 121 of the recorded events. The last 20 years account for 194 events against 59 in the 20 years before, a change that reflects reporting practice as much as weather.
The county holds 3.7% of the 6,836 flood events recorded in New York; its 27.8 per 100 square miles compares with 14.5 statewide.
Compared with New York
| Measure | Suffolk County | New York | US |
|---|---|---|---|
| Flood events since 1950 | 253 | 6,836 | 183,559 |
| Per 100 square miles | 27.8 | 14.5 | 5.2 |
| Per 10,000 residents | 1.7 | 3.4 | 5.5 |
| Deaths recorded | 0 | 117 | 2,961 |
| Busiest month | August | July | June |
By year
Seasonality
5Feb
0Mar
8Apr
5May
1Jun
18Jul
38Aug
121Sep
42Oct
11Nov
0Dec
4
Recorded events
The 193 events kept for this page are the 120 most recent plus the 80 with the most damage, deaths or injuries out of 253. Magnitude is hail size, tornado rating or wind speed as recorded.
| Date | Event type | Magnitude | Property damage | Crop damage | Deaths | Injuries | Geography |
|---|---|---|---|---|---|---|---|
| 31 Jul 2025 | Flash Flood | — | — | — | — | — | County |
| 31 Jul 2025 | Flash Flood | — | — | — | — | — | County |
| 31 Jul 2025 | Flash Flood | — | — | — | — | — | County |
| 31 Jul 2025 | Flash Flood | — | — | — | — | — | County |
| 31 Jul 2025 | Flash Flood | — | — | — | — | — | County |
| 31 Jul 2025 | Flash Flood | — | — | — | — | — | County |
| 31 Jul 2025 | Flash Flood | — | — | — | — | — | County |
| 19 Aug 2024 | Flash Flood | — | — | — | — | — | County |
| 19 Aug 2024 | Flash Flood | — | — | — | — | — | County |
| 19 Aug 2024 | Flash Flood | — | — | — | — | — | County |
| 19 Aug 2024 | Flash Flood | — | — | — | — | — | County |
| 19 Aug 2024 | Flash Flood | — | — | — | — | — | County |
| 19 Aug 2024 | Flash Flood | — | — | — | — | — | County |
| 19 Aug 2024 | Flash Flood | — | — | — | — | — | County |
| 19 Aug 2024 | Flash Flood | — | — | — | — | — | County |
| 19 Aug 2024 | Flash Flood | — | $25K | — | — | — | County |
| 19 Aug 2024 | Flash Flood | — | — | — | — | — | County |
| 19 Aug 2024 | Flash Flood | — | — | — | — | — | County |
| 19 Aug 2024 | Flash Flood | — | — | — | — | — | County |
| 19 Aug 2024 | Flash Flood | — | — | — | — | — | County |
| 19 Aug 2024 | Flash Flood | — | $100K | — | — | — | County |
| 19 Aug 2024 | Flash Flood | — | — | — | — | — | County |
| 19 Aug 2024 | Flash Flood | — | — | — | — | — | County |
| 19 Aug 2024 | Flash Flood | — | — | — | — | — | County |
| 19 Aug 2024 | Flash Flood | — | $500K | — | — | — | County |
| 19 Aug 2024 | Flash Flood | — | — | — | — | — | County |
| 19 Aug 2024 | Flash Flood | — | — | — | — | — | County |
| 19 Aug 2024 | Flash Flood | — | — | — | — | — | County |
| 19 Aug 2024 | Flash Flood | — | — | — | — | — | County |
| 19 Aug 2024 | Flash Flood | — | — | — | — | — | County |
| 19 Aug 2024 | Flash Flood | — | $10K | — | — | — | County |
| 18 Aug 2024 | Flash Flood | — | — | — | — | — | County |
| 18 Aug 2024 | Flash Flood | — | — | — | — | — | County |
| 18 Aug 2024 | Flash Flood | — | — | — | — | — | County |
| 18 Aug 2024 | Flash Flood | — | — | — | — | — | County |
| 18 Aug 2024 | Flash Flood | — | $20K | — | — | — | County |
| 18 Aug 2024 | Flash Flood | — | — | — | — | — | County |
| 18 Aug 2024 | Flash Flood | — | — | — | — | — | County |
| 18 Aug 2024 | Flash Flood | — | — | — | — | — | County |
| 18 Aug 2024 | Flash Flood | — | — | — | — | — | County |
| 18 Aug 2024 | Flash Flood | — | — | — | — | — | County |
| 18 Aug 2024 | Flash Flood | — | — | — | — | — | County |
| 18 Aug 2024 | Flash Flood | — | — | — | — | — | County |
| 18 Aug 2024 | Flash Flood | — | — | — | — | — | County |
| 18 Aug 2024 | Flash Flood | — | — | — | — | — | County |
| 18 Aug 2024 | Flash Flood | — | — | — | — | — | County |
| 29 Sep 2023 | Flash Flood | — | — | — | — | — | County |
| 29 Sep 2023 | Flash Flood | — | — | — | — | — | County |
| 29 Sep 2023 | Flash Flood | — | — | — | — | — | County |
| 16 Jul 2023 | Flash Flood | — | — | — | — | — | County |
| 16 Jul 2023 | Flash Flood | — | — | — | — | — | County |
| 16 Jul 2023 | Flash Flood | — | — | — | — | — | County |
| 16 Jul 2023 | Flash Flood | — | — | — | — | — | County |
| 16 Jul 2023 | Flash Flood | — | — | — | — | — | County |
| 16 Jul 2023 | Flash Flood | — | — | — | — | — | County |
| 16 Jul 2023 | Flash Flood | — | — | — | — | — | County |
| 16 Jul 2023 | Flash Flood | — | — | — | — | — | County |
| 16 Jul 2023 | Flash Flood | — | — | — | — | — | County |
| 16 Jul 2023 | Flash Flood | — | — | — | — | — | County |
| 23 Aug 2022 | Flash Flood | — | — | — | — | — | County |
| 23 Aug 2022 | Flash Flood | — | — | — | — | — | County |
| 23 Aug 2022 | Flash Flood | — | — | — | — | — | County |
| 18 Jul 2022 | Flash Flood | — | — | — | — | — | County |
| 2 Sep 2021 | Flash Flood | — | — | — | — | — | County |
| 1 Sep 2021 | Flash Flood | — | — | — | — | — | County |
| 1 Sep 2021 | Flash Flood | — | $3.2M | — | — | — | County |
| 1 Sep 2021 | Flash Flood | — | — | — | — | — | County |
| 28 Aug 2021 | Flash Flood | — | — | — | — | — | County |
| 28 Aug 2021 | Flash Flood | — | — | — | — | — | County |
| 28 Aug 2021 | Flash Flood | — | — | — | — | — | County |
| 9 Jul 2021 | Flash Flood | — | — | — | — | — | County |
| 10 Sep 2020 | Flash Flood | — | — | — | — | — | County |
| 10 Sep 2020 | Flash Flood | — | — | — | — | — | County |
| 10 Sep 2020 | Flash Flood | — | — | — | — | — | County |
| 10 Sep 2020 | Flash Flood | — | — | — | — | — | County |
| 23 Jul 2019 | Flash Flood | — | — | — | — | — | County |
| 22 Jul 2019 | Flash Flood | — | — | — | — | — | County |
| 21 Dec 2018 | Flash Flood | — | — | — | — | — | County |
| 21 Dec 2018 | Flash Flood | — | — | — | — | — | County |
| 21 Dec 2018 | Flash Flood | — | — | — | — | — | County |
| 25 Sep 2018 | Flash Flood | — | — | — | — | — | County |
| 25 Sep 2018 | Flash Flood | — | — | — | — | — | County |
| 25 Sep 2018 | Flash Flood | — | — | — | — | — | County |
| 12 Sep 2018 | Flash Flood | — | — | — | — | — | County |
| 12 Sep 2018 | Flash Flood | — | — | — | — | — | County |
| 13 Aug 2018 | Flash Flood | — | — | — | — | — | County |
| 12 Aug 2018 | Flash Flood | — | — | — | — | — | County |
| 12 Aug 2018 | Flash Flood | — | — | — | — | — | County |
| 12 Aug 2018 | Flash Flood | — | — | — | — | — | County |
| 7 Aug 2018 | Flash Flood | — | — | — | — | — | County |
| 24 Oct 2017 | Flash Flood | — | — | — | — | — | County |
| 24 Oct 2017 | Flash Flood | — | — | — | — | — | County |
| 18 Aug 2017 | Flash Flood | — | — | — | — | — | County |
| 18 Aug 2017 | Flash Flood | — | — | — | — | — | County |
| 18 Aug 2017 | Flash Flood | — | — | — | — | — | County |
| 18 Aug 2017 | Flash Flood | — | — | — | — | — | County |
| 18 Aug 2017 | Flash Flood | — | — | — | — | — | County |
| 19 Sep 2016 | Flash Flood | — | — | — | — | — | County |
| 19 Sep 2016 | Flash Flood | — | — | — | — | — | County |
| 1 Sep 2016 | Flash Flood | — | — | — | — | — | County |
| 20 Aug 2016 | Flash Flood | — | — | — | — | — | County |
| 20 Aug 2016 | Flash Flood | — | — | — | — | — | County |
| 20 Aug 2016 | Flash Flood | — | — | — | — | — | County |
| 20 Aug 2016 | Flash Flood | — | — | — | — | — | County |
| 20 Aug 2016 | Flash Flood | — | — | — | — | — | County |
| 20 Aug 2016 | Flash Flood | — | — | — | — | — | County |
| 20 Aug 2016 | Flash Flood | — | — | — | — | — | County |
| 20 Aug 2016 | Flash Flood | — | — | — | — | — | County |
| 20 Aug 2016 | Flash Flood | — | — | — | — | — | County |
| 20 Aug 2016 | Flash Flood | — | — | — | — | — | County |
| 10 Aug 2016 | Flash Flood | — | — | — | — | — | County |
| 10 Aug 2016 | Flash Flood | — | — | — | — | — | County |
| 10 Aug 2016 | Flash Flood | — | — | — | — | — | County |
| 10 Sep 2015 | Flash Flood | — | — | — | — | — | County |
| 10 Sep 2015 | Flash Flood | — | — | — | — | — | County |
| 10 Sep 2015 | Flash Flood | — | — | — | — | — | County |
| 10 Sep 2015 | Flash Flood | — | — | — | — | — | County |
| 13 Aug 2014 | Flash Flood | — | $35M | — | — | — | County |
| 13 Aug 2014 | Flash Flood | — | — | — | — | — | County |
| 13 Aug 2014 | Flash Flood | — | — | — | — | — | County |
| 12 Dec 2008 | Flood | — | — | — | — | — | County |
| 7 Aug 2008 | Flash Flood | — | — | — | — | — | County |
| 2 Aug 2008 | Flash Flood | — | — | — | — | — | County |
| 27 Jul 2008 | Flash Flood | — | — | — | — | — | County |
| 27 Jul 2008 | Flash Flood | — | — | — | — | — | County |
| 27 Jul 2008 | Flash Flood | — | — | — | — | — | County |
| 27 Jul 2008 | Flash Flood | — | — | — | — | — | County |
| 27 Jul 2008 | Flash Flood | — | — | — | — | — | County |
| 27 May 2008 | Flash Flood | — | — | — | — | — | County |
| 19 Oct 2007 | Flash Flood | — | — | — | — | — | County |
| 18 Jul 2007 | Flash Flood | — | — | — | — | — | County |
| 18 Jul 2007 | Flash Flood | — | — | — | — | — | County |
| 2 Mar 2007 | Flash Flood | — | — | — | — | — | County |
| 2 Mar 2007 | Flash Flood | — | — | — | — | — | County |
| 28 Oct 2006 | Flash Flood | — | — | — | — | — | County |
| 11 Oct 2006 | Flash Flood | — | — | — | — | — | County |
| 15 Sep 2006 | Flash Flood | — | — | — | — | — | County |
| 15 Sep 2006 | Flash Flood | — | — | — | — | — | County |
| 15 Sep 2006 | Flash Flood | — | — | — | — | — | County |
| 15 Sep 2006 | Flash Flood | — | — | — | — | — | County |
| 15 Sep 2006 | Flash Flood | — | — | — | — | — | County |
| 25 Aug 2006 | Flash Flood | — | — | — | — | — | County |
| 12 Jul 2006 | Flash Flood | — | — | — | — | — | County |
| 14 Oct 2005 | Flash Flood | — | $11M | — | — | — | County |
| 15 Sep 2005 | Flash Flood | — | — | — | — | — | County |
| 30 Aug 2005 | Flash Flood | — | — | — | — | — | County |
| 18 Jul 2005 | Flash Flood | — | — | — | — | — | County |
| 28 Sep 2004 | Flash Flood | — | — | — | — | — | County |
| 18 Sep 2004 | Flash Flood | — | — | — | — | — | County |
| 8 Sep 2004 | Flash Flood | — | — | — | — | — | County |
| 13 Apr 2004 | Flash Flood | — | — | — | — | — | County |
| 17 Aug 2003 | Flash Flood | — | — | — | — | — | County |
| 17 Aug 2003 | Flash Flood | — | — | — | — | — | County |
| 17 Aug 2003 | Flash Flood | — | — | — | — | — | County |
| 10 Aug 2003 | Flash Flood | — | — | — | — | — | County |
| 8 Aug 2003 | Flash Flood | — | — | — | — | — | County |
| 29 Aug 2002 | Flash Flood | — | — | — | — | — | County |
| 13 Aug 2001 | Flood | — | — | — | — | — | County |
| 17 Jun 2001 | Flash Flood | — | — | — | — | — | County |
| 30 Mar 2001 | Flood | — | — | — | — | — | County |
| 3 Sep 2000 | Flash Flood | — | — | — | — | — | County |
| 2 Sep 2000 | Flash Flood | — | — | — | — | — | County |
| 11 Aug 2000 | Flash Flood | — | — | — | — | — | County |
| 1 Aug 2000 | Flash Flood | — | — | — | — | — | County |
| 31 Jul 2000 | Flash Flood | — | — | — | — | — | County |
| 21 Apr 2000 | Flash Flood | — | — | — | — | — | County |
| 21 Apr 2000 | Flash Flood | — | — | — | — | — | County |
| 21 Apr 2000 | Flash Flood | — | — | — | — | — | County |
| 16 Sep 1999 | Flash Flood | — | — | — | — | — | County |
| 10 Sep 1999 | Flood | — | — | — | — | — | County |
| 8 Sep 1999 | Flash Flood | — | — | — | — | — | County |
| 26 Aug 1999 | Flash Flood | — | — | — | — | — | County |
| 11 Aug 1999 | Flash Flood | — | — | — | — | — | County |
| 22 Jul 1999 | Flood | — | — | — | — | — | County |
| 15 Jan 1999 | Flash Flood | — | — | — | — | — | County |
| 3 Jan 1999 | Flash Flood | — | — | — | — | — | County |
| 18 Aug 1998 | Flood | — | — | — | — | — | County |
| 26 Jun 1998 | Flash Flood | — | — | — | — | — | County |
| 13 Jun 1998 | Flash Flood | — | — | — | — | — | County |
| 13 Jun 1998 | Flash Flood | — | — | — | — | — | County |
| 12 Jun 1998 | Flash Flood | — | — | — | — | — | County |
| 8 Mar 1998 | Flood | — | — | — | — | — | County |
| 23 Jan 1998 | Flood | — | — | — | — | — | County |
| 20 Aug 1997 | Coastal Flood | — | — | — | — | — | County |
| 10 Jan 1997 | Coastal Flood | — | — | — | — | — | County |
| 19 Oct 1996 | Flash Flood | — | — | — | — | — | County |
| 19 Oct 1996 | Flash Flood | — | — | — | — | — | County |
| 19 Oct 1996 | Flash Flood | — | — | — | — | — | County |
| 31 Jul 1996 | Flash Flood | — | — | — | — | — | County |
| 31 Jul 1996 | Flash Flood | — | — | — | — | — | County |
| 3 Jun 1996 | Flood | — | — | — | — | — | County |
| 16 Apr 1996 | Flood | — | — | — | — | — | County |
| 12 Jan 1996 | Flood | — | — | — | — | — | County |
Questions and answers
How many flood events has Suffolk County had?
253 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 Suffolk County?
31 Jul 2025 (Flash Flood). Records reach NCEI about 120 days after the month ends.
What was the most damaging flood event recorded in Suffolk County?
The flash flood of 13 Aug 2014, with property damage estimated by NCEI at $35M.
How does Suffolk County compare with New York for flood?
27.8 events per 100 square miles against 14.5 statewide; the county holds 253 of the state's 6,836 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.