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Flood in Tioga County, New York
92 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 92 flood events in Tioga County, New York, between 1950 and 2026, spread over 21 years.
September is the busiest month, with 18 of the recorded events. The last 20 years account for 50 events against 42 in the 20 years before, a change that reflects reporting practice as much as weather.
The county holds 1.3% of the 6,836 flood events recorded in New York; its 17.7 per 100 square miles compares with 14.5 statewide.
Compared with New York
| Measure | Tioga County | New York | US |
|---|---|---|---|
| Flood events since 1950 | 92 | 6,836 | 183,559 |
| Per 100 square miles | 17.7 | 14.5 | 5.2 |
| Per 10,000 residents | 19.2 | 3.4 | 5.5 |
| Deaths recorded | 0 | 117 | 2,961 |
| Busiest month | September | July | June |
By year
Seasonality
6Feb
1Mar
9Apr
8May
2Jun
10Jul
16Aug
7Sep
18Oct
3Nov
5Dec
7
Recorded events
All 92 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 |
|---|---|---|---|---|---|---|---|
| 31 Mar 2026 | Flash Flood | — | $15K | — | — | — | County |
| 14 Jul 2025 | Flash Flood | — | $100K | — | — | — | County |
| 13 Jul 2025 | Flash Flood | — | $5K | — | — | — | County |
| 13 Jul 2025 | Flash Flood | — | $3K | — | — | — | County |
| 13 Jul 2025 | Flash Flood | — | $50K | — | — | — | County |
| 13 Jul 2025 | Flash Flood | — | $250K | — | — | — | County |
| 25 Dec 2020 | Flood | — | $20K | — | — | — | County |
| 24 Dec 2020 | Flash Flood | — | $5K | — | — | — | County |
| 30 Apr 2020 | Flood | — | $5K | — | — | — | County |
| 30 Apr 2020 | Flood | — | — | — | — | — | County |
| 31 Oct 2019 | Flash Flood | — | $25K | — | — | — | County |
| 19 Jun 2019 | Flash Flood | — | $5K | — | — | — | County |
| 18 Sep 2018 | Flash Flood | — | $20K | — | — | — | County |
| 18 Sep 2018 | Flash Flood | — | $8K | — | — | — | County |
| 18 Sep 2018 | Flash Flood | — | $250K | — | — | — | County |
| 14 Aug 2018 | Flash Flood | — | $10K | — | — | — | County |
| 14 Aug 2018 | Flash Flood | — | $25K | — | — | — | County |
| 14 Aug 2018 | Flash Flood | — | $12K | — | — | — | County |
| 14 Aug 2018 | Flash Flood | — | $15K | — | — | — | County |
| 25 Jul 2018 | Flash Flood | — | $5K | — | — | — | County |
| 25 Jul 2018 | Flash Flood | — | $200K | — | — | — | County |
| 25 Jul 2018 | Flash Flood | — | $20K | — | — | — | County |
| 24 Jul 2017 | Flash Flood | — | $25K | — | — | — | County |
| 24 Jul 2017 | Flash Flood | — | $20K | — | — | — | County |
| 23 Jul 2017 | Flash Flood | — | $284K | — | — | — | County |
| 14 Jul 2017 | Flash Flood | — | $50K | — | — | — | County |
| 26 Jul 2015 | Flash Flood | — | $25K | — | — | — | County |
| 14 Jun 2015 | Flash Flood | — | $400K | — | — | — | County |
| 14 Jun 2015 | Flash Flood | — | $400K | — | — | — | County |
| 14 Jun 2015 | Flash Flood | — | $400K | — | — | — | County |
| 14 Jun 2015 | Flash Flood | — | $400K | — | — | — | County |
| 9 Aug 2013 | Flash Flood | — | $75K | — | — | — | County |
| 8 Aug 2013 | Flash Flood | — | $15K | — | — | — | County |
| 1 Jul 2013 | Flash Flood | — | $50K | — | — | — | County |
| 29 Sep 2011 | Flash Flood | — | — | — | — | — | County |
| 7 Sep 2011 | Flood | — | $16M | — | — | — | County |
| 7 Sep 2011 | Flash Flood | — | $15M | — | — | — | County |
| 7 Sep 2011 | Flood | — | $309M | — | — | — | County |
| 7 Sep 2011 | Flash Flood | — | $8.0M | — | — | — | County |
| 7 Sep 2011 | Flash Flood | — | $70M | — | — | — | County |
| 7 Sep 2011 | Flash Flood | — | $2.0M | — | — | — | County |
| 7 Sep 2011 | Flash Flood | — | $2.0M | — | — | — | County |
| 7 Sep 2011 | Flash Flood | — | $20M | — | — | — | County |
| 7 Sep 2011 | Flash Flood | — | $25M | — | — | — | County |
| 7 Sep 2011 | Flash Flood | — | $10M | — | — | — | County |
| 28 Apr 2011 | Flash Flood | — | $3.0M | — | — | — | County |
| 30 Sep 2010 | Flash Flood | — | $50K | — | — | — | County |
| 30 Sep 2010 | Flash Flood | — | $25K | — | — | — | County |
| 25 Mar 2007 | Flood | — | — | — | — | — | County |
| 15 Mar 2007 | Flood | — | $5K | — | — | — | County |
| 16 Nov 2006 | Flash Flood | — | $15K | — | — | — | County |
| 16 Nov 2006 | Flash Flood | — | $10K | — | — | — | County |
| 16 Nov 2006 | Flash Flood | — | $10K | — | — | — | County |
| 28 Jun 2006 | Flood | — | $5.0M | — | — | — | County |
| 27 Jun 2006 | Flash Flood | — | $100M | — | — | — | County |
| 18 Jan 2006 | Flood | — | $10K | — | — | — | County |
| 1 Dec 2005 | Flood | — | $5K | — | — | — | Forecast zone |
| 30 Nov 2005 | Flood | — | $20K | — | — | — | Forecast zone |
| 25 Oct 2005 | Flood | — | $20K | — | — | — | Forecast zone |
| 10 Jun 2005 | Flash Flood | — | $20K | — | — | — | County |
| 2 Apr 2005 | Flash Flood | — | $500K | — | — | — | County |
| 1 Apr 2005 | Flood | — | $1.0M | — | — | — | Forecast zone |
| 28 Mar 2005 | Flood | — | $20K | — | — | — | Forecast zone |
| 28 Mar 2005 | Flash Flood | — | $50K | — | — | — | County |
| 18 Sep 2004 | Flood | — | $1.0M | — | — | — | Forecast zone |
| 17 Sep 2004 | Flash Flood | — | $1.0M | — | — | — | County |
| 7 Jul 2004 | Flash Flood | — | $150K | — | — | — | County |
| 6 Mar 2004 | Flood | — | $10K | — | — | — | Forecast zone |
| 12 Dec 2003 | Flood | — | — | — | — | — | Forecast zone |
| 29 Oct 2003 | Flood | — | $5K | — | — | — | Forecast zone |
| 21 Mar 2003 | Flood | — | $50K | — | — | — | Forecast zone |
| 27 Mar 2002 | Flood | — | — | — | — | — | Forecast zone |
| 23 Jun 2001 | Flash Flood | — | — | — | — | — | County |
| 9 Apr 2001 | Flood | — | — | — | — | — | Forecast zone |
| 31 Mar 2001 | Flood | — | — | — | — | — | Forecast zone |
| 9 Aug 2000 | Flood | — | — | — | — | — | County |
| 29 Jun 2000 | Flood | — | — | — | — | — | County |
| 13 May 2000 | Flash Flood | — | — | — | — | — | County |
| 10 May 2000 | Flash Flood | — | $1.3M | — | — | — | County |
| 4 Apr 2000 | Flood | — | — | — | — | — | Forecast zone |
| 4 Apr 2000 | Flash Flood | — | — | — | — | — | County |
| 27 Feb 2000 | Flood | — | — | — | — | — | Forecast zone |
| 24 Jan 1999 | Flood | — | — | — | — | — | Forecast zone |
| 8 Jul 1998 | Flash Flood | — | $500K | — | — | — | County |
| 8 Jan 1998 | Flash Flood | — | — | — | — | — | County |
| 6 Jan 1998 | Flood | — | $100K | — | — | — | Forecast zone |
| 13 Dec 1996 | Flash Flood | — | $20K | — | — | — | County |
| 2 Dec 1996 | Flood | — | — | — | — | — | Forecast zone |
| 1 Dec 1996 | Flash Flood | — | $20K | — | — | — | County |
| 9 Nov 1996 | Flood | — | — | — | — | — | Forecast zone |
| 19 Jan 1996 | Flash Flood | — | $4.5M | — | — | — | County |
| 19 Jan 1996 | Flood | — | — | — | — | — | Forecast zone |
Questions and answers
How many flood events has Tioga County had?
92 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 Tioga County?
31 Mar 2026 (Flash Flood). Records reach NCEI about 120 days after the month ends.
What was the most damaging flood event recorded in Tioga County?
The flood of 7 Sep 2011, with property damage estimated by NCEI at $309M.
How does Tioga County compare with New York for flood?
17.7 events per 100 square miles against 14.5 statewide; the county holds 92 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.