Allegany County, New York
County storm and disaster record · FIPS 36003 · population 46,450 · 1,030 sq mi
NOAA's Storm Events Database holds 592 records for Allegany County, New York from 1950 through June 30, 2026, on 348 days; the most frequent are severe thunderstorm wind events (304 records). The most damaging was the July 23, 2003 flash flood ($11.2 million in 2025 dollars). FEMA has issued 25 declarations naming the county since 1967, 21 of them for natural hazards; the latest for a natural hazard was “Remnants of Tropical Storm Debby” on September 24, 2024.
The record, 1950 to 2026
Storm records filed for the county each year (2026 to June 30, 2026). Before 1996 NOAA recorded only tornadoes (from 1950), thunderstorm wind and hail (from 1955).
- recorded, no damage figure
- under $100,000
- $100,000 or more
- $1 million or more
- $10 million or more, or a death
- $100 million or more, or 10 deaths
- a year's colour: its recorded damage or deaths
- a year with a death
- 1955: wind and hail recorded from 1955
- 1996: all 48 event types from 1996
- Storm records
- 592on 348 days, 1950 to June 30, 2026
- Deaths recorded
- 038 injuries
- Damage, 2025 dollars
- $41Mas filed (scale steps before 1993)
- Tornadoes
- 11strongest F2
- FEMA declarations
- 25latest 2024
Source: NOAA NCEI Storm Events Database, records through June 30, 2026 (file revision 20260918); damage converted to 2025 dollars with the BLS CPI-U. Search the record at NCEI. BLS consumer price index.
What hazards hit Allegany County most?
The most frequent records are severe thunderstorm wind events: 304 since 1956. 53% of its severe thunderstorm wind events since 1956 fell in June and July. The rank column places the county among New York's counties by days with a record per 1,000 square miles of land over each hazard's complete period.
| Hazard | Records | Days | First, last | Killed | Injured | Damage | Rank in state |
|---|---|---|---|---|---|---|---|
| Severe thunderstorm wind | 304 | 159 | 1956-2026 | 0 | 27 | $4.3M | 48 of 58 |
| Floods | 105 | 53 | 1996-2026 | 0 | 10 | $27M | 44 of 58 |
| Winter storms | 66 | 66 | 1996-2026 | 0 | 0 | $4.8M | 57 of 58 |
| Hail | 31 | 24 | 1956-2026 | 0 | 0 | $193K | 53 of 58 |
| High wind and dust storms | 31 | 31 | 1996-2024 | 0 | 0 | $1.9M | 46 of 58 |
| Extreme cold | 30 | 28 | 2008-2026 | 0 | 0 | $54K | 38 of 58 |
| Tornadoes | 11 | 10 | 1993-2024 | 0 | 0 | $2.8M | 36 of 58 |
| Heavy rain | 7 | 1 | 2021-2021 | 0 | 0 | – | 53 of 58 |
| Drought | 4 | 4 | 2016-2016 | 0 | 0 | – | 38 of 58 |
| Lightning | 3 | 3 | 2006-2018 | 0 | 1 | $79K | 47 of 58 |
Source: NOAA NCEI Storm Events Database (county and forecast-zone records attributed to the county; a zone record shows its own totals on each county it covers). Days: dates with at least one record of the hazard in the county. Ranks: days with a record per 1,000 square miles of land (Census Bureau 2024 Gazetteer), since 1950 for tornadoes, 1955 for hail and thunderstorm wind, 1996 for the rest.
How many tornadoes has Allegany County had?
NOAA records 11 tornadoes in Allegany County from 1993 to 2024, the strongest rated F2, with 0 deaths and 0 injuries recorded in the county. A tornado that crossed a county line is counted in each county it touched, with the length of its path inside the county.
Counted as whole tornadoes rather than county records, the Storm Prediction Center's database holds 12 tornadoes whose track touched Allegany County since 1950 (NOAA's county records number 11: they file a crossing tornado once per county segment, and the two databases differ on some tracks); along their whole tracks they killed 0 people.
| Date | Tornado | Rating | Path | Killed |
|---|---|---|---|---|
| 1969-06-20 05:55, as SPC files it | Jamestown to Salamanca | F3 | 84.1 mi | 0 |
Map of the strongest tornado tracks in New York.
Every tornado record filed for Allegany County (11)
| Date | Place | Character | Killed | Injured | Damage |
|---|---|---|---|---|---|
| 2024-09-06 | Nile, Allegany County | EF1 5.98 mi x 200 yd | 0 | 0 | – |
| 2017-07-20 | Angelica, Allegany County | EF1 4.22 mi x 740 yd | 0 | 0 | $301K |
| 2017-07-20 | Houghton College Arp, Allegany County | EF0 1.06 mi x 150 yd | 0 | 0 | $30K |
| 2010-06-27 | Paynesville, Allegany County | EF1 4.74 mi x 250 yd | 0 | 0 | $68K |
| 2009-08-09 | Rawson, Allegany County | EF1 7.84 mi x 25 yd | 0 | 0 | $344K |
| 2005-08-12 | Wellsville, Allegany County | F0 0.5 mi x 10 yd | 0 | 0 | $23K |
| 2002-08-22 | Scio, Allegany County | F1 4 mi x 150 yd | 0 | 0 | $57K |
| 2002-04-28 | Belfast, Allegany County | F2 6.5 mi x 300 yd | 0 | 0 | $820K |
| 1997-07-08 | Stannards, Allegany County | F0 0.2 mi x 15 yd | 0 | 0 | $92K |
| 1996-07-30 | Canaseraga, Allegany County | F0 0.5 mi x 10 yd | 0 | 0 | $41K |
| 1993-09-03 | Angelica, Allegany County | F2 3.5 mi x 50 yd | 0 | 0 | $1.0M |
Source: NOAA NCEI Storm Events Database, tornado records by county (path length in the county, maximum width); ratings as published: F scale before February 1, 2007, EF scale after. Whole-track figures: NOAA Storm Prediction Center tornado database (1950-2025). SPC severe weather database.
When was the last damaging storm in Allegany County?
The most recent record with damage, injuries or deaths is the April 15, 2026 thunderstorm wind ($10,000 in damage in 2025 dollars).
| Date | Record | Character | Killed | Injured | Damage |
|---|---|---|---|---|---|
| 2026-06-18 | Thunderstorm WindIndependence, Allegany County | 50 kt wind | 0 | 0 | – |
| 2026-06-18 | Thunderstorm WindScio, Allegany County | 50 kt wind | 0 | 0 | – |
| 2026-06-18 | Thunderstorm WindFriendship, Allegany County | 50 kt wind | 0 | 0 | – |
| 2026-06-18 | Thunderstorm WindOramel, Allegany County | 50 kt wind | 0 | 0 | – |
| 2026-05-12 | Frost/FreezeAllegany County · forecast zone Allegany | 0 | 0 | – | |
| 2026-04-15 | Thunderstorm WindFive Corners, Allegany County | 50 kt wind | 0 | 0 | $10K |
| 2026-03-31 | HailWest Almond, Allegany County | 0.88 in hail | 0 | 0 | – |
| 2026-03-31 | Flash FloodHoughton College Arp, Allegany County | 0 | 0 | – | |
| 2026-03-31 | Flash FloodSwain, Allegany County | 0 | 0 | – | |
| 2026-03-31 | Flash FloodCanaseraga, Allegany County | 0 | 0 | – | |
| 2026-03-31 | Flash FloodHume, Allegany County | 0 | 0 | – | |
| 2026-02-07 | Extreme Cold/Wind ChillAllegany County · forecast zone Allegany | 0 | 0 | – |
Source: NOAA NCEI Storm Events Database; every record of 2025-2026 is listed, earlier ones when they caused deaths, injuries or $250,000 of damage (2025 dollars), and every tornado.
The deadliest and costliest records
| Date | Record | Character | Killed | Injured | Damage |
|---|---|---|---|---|---|
| 2011-11-14 | Thunderstorm WindKossuth, Allegany County Powerlines were downed along Route 417. | 61 kt wind | 0 | 15 | – |
| 2012-06-12 | Flash FloodRichburg, Allegany County A slow moving cold front was crossing the lower Great Lakes late in the afternoon while a moisture rich airmass sat across Western New York. Thunderstorms developed along what appeared to be a lake breeze boundary ahead of the surface cold front. As these storms pushed further inland, they intensified and become more ... | 0 | 10 | – | |
| 2011-11-14 | Thunderstorm WindFriendship, Allegany County Emergency Management reported several power lines down. | 61 kt wind | 0 | 10 | – |
| 2018-07-04 | LightningBelmont, Allegany County A male was struck by lightning along Route 244 near Amity. | 0 | 1 | – | |
| 2001-06-21 | Thunderstorm WindBelfast, Allegany County An isolated thunderstorm crossed Allegany county during the early morning hours. Several trees and power lines fell. One tree tipped over a pop-up camper. The teenage girl sleeping inside suffered minor injuries. Another tree which fell nearby caused structural damage to the wall of a house. | 52 kt wind | 0 | 1 | $33K |
| 2001-06-12 | Thunderstorm WindBelfast, Allegany County Severe thunderstorms crossed Allegany county during the afternoon hours. The high winds downed trees and power lines in Belfast. Several houses were damaged and two cars were flattened. A girl was struck by a falling tree limb. The injury was minor, requiring stitches. | 54 kt wind | 0 | 1 | $83K |
| Date | Record | Character | Killed | Injured | Damage |
|---|---|---|---|---|---|
| 2003-07-23 | Flash FloodBelfast, Allegany County | 0 | 0 | $11M | |
| 2003-08-09 | Flash FloodAngelica, Allegany County | 0 | 0 | $3.2M | |
| 2003-08-05 | Flash FloodAndover, Allegany County | 0 | 0 | $1.6M | |
| 2011-04-26 | Flash FloodScio, Allegany County | 0 | 0 | $1.6M | |
| 2000-08-09 | Flash FloodHume, Allegany County | 0 | 0 | $1.3M | |
| 2004-09-09 | FloodAllegany County · forecast zone Allegany | 0 | 0 | $984K | |
| 2001-12-29 | Heavy SnowAllegany County · forecast zone Allegany | 0 | 0 | $833K | |
| 2002-04-28 | TornadoBelfast, Allegany County | F2 6.5 mi x 300 yd | 0 | 0 | $820K |
Source: NOAA NCEI Storm Events Database: deaths and injuries direct and indirect; damage is property plus crops as estimated by the National Weather Service, converted to 2025 dollars.
Is it getting more frequent?
Records per decade for Allegany County's most frequent hazards. Counts rose everywhere after 1996, when NOAA began recording every event type, so compare decades within a hazard's complete period only (the shaded cells come before it).
| Hazard | 1950s | 1960s | 1970s | 1980s | 1990s | 2000s | 2010s | 2020-26 |
|---|---|---|---|---|---|---|---|---|
| Severe thunderstorm wind | 1 | 2 | 7 | 12 | 40 | 45 | 115 | 82 |
| Floods | – | – | – | – | 7 | 16 | 38 | 44 |
| Winter storms | – | – | – | – | 12 | 25 | 21 | 8 |
| Hail | 1 | 0 | 0 | 5 | 5 | 2 | 17 | 1 |
| High wind and dust storms | – | – | – | – | 4 | 10 | 12 | 5 |
| Extreme cold | – | – | – | – | 0 | 4 | 19 | 7 |
Source: NOAA NCEI Storm Events Database, records per calendar decade; zone records from the CZ_TYPE field (Z).
What time of year?
53% of its severe thunderstorm wind events since 1956 fell in June and July. The two busiest months are in violet.
The values, month by month
Jan 40 · Feb 17 · Mar 35 · Apr 31 · May 61 · Jun 97 · Jul 136 · Aug 64 · Sep 46 · Oct 21 · Nov 20 · Dec 24 (records).
Source: NOAA NCEI Storm Events Database, records by the month they began.
Federal disaster declarations for Allegany County
FEMA's register lists 25 declarations that include Allegany County: 19 major disasters, 6 emergencies and 0 fire management assistance declarations. Most were for severe storm (7) and flood (7).
| Declared | Number | Type | Title |
|---|---|---|---|
| 2024-09-24 | DR-4825 | Tropical Storm | Remnants of Tropical Storm Debby |
| 2021-10-08 | DR-4625 | Hurricane | Remnants of Tropical Storm Fred |
| 2020-03-20 | DR-4480 | Biological | Covid-19 Pandemic |
| 2020-03-13 | EM-3434 | Biological | Covid-19 |
| 2014-07-08 | DR-4180 | Severe Storm | Severe Storms and Flooding |
| 2013-07-12 | DR-4129 | Flood | Severe Storms and Flooding |
| 2012-10-28 | EM-3351 | Hurricane | Hurricane Sandy |
| 2011-06-10 | DR-1993 | Flood | Severe Storms, Flooding, Tornadoes, and Straight-Line Winds |
| 2009-09-01 | DR-1857 | Severe Storm | Severe Storms and Flooding |
| 2005-09-30 | EM-3262 | Hurricane | Hurricane Katrina Evacuation |
| 2004-10-01 | DR-1564 | Severe Storm | Severe Storms and Flooding |
| 2004-08-03 | DR-1534 | Severe Storm | Severe Storms and Flooding |
| 2003-08-29 | DR-1486 | Severe Storm | Severe Storms, Flooding, and Tornadoes |
| 2003-08-23 | EM-3186 | Other | Power Outage |
| 2001-09-11 | DR-1391 | Fire | Fires and Explosions |
| 2000-10-11 | EM-3155 | Other | West Nile Virus |
| 2000-07-21 | DR-1335 | Severe Storm | Severe Storms and Flooding |
| 1998-07-07 | DR-1233 | Severe Storm | Severe Storms and Flooding |
| 1996-01-24 | DR-1095 | Flood | Severe Storms and Flooding |
| 1993-03-17 | EM-3107 | Snowstorm | Severe Blizzard |
| 1991-03-21 | DR-898 | Snowstorm | Severe Winter Storm |
| 1984-09-25 | DR-725 | Flood | Severe Storms & Flooding |
| 1975-10-02 | DR-487 | Flood | Storms, Rains, Landslides & Flooding |
| 1972-06-23 | DR-338 | Flood | Tropical Storm Agnes |
| 1967-10-30 | DR-233 | Flood | Severe Storms & Flooding |
Source: FEMA OpenFEMA Disaster Declarations Summaries (v2), declarations through October 2, 2026; one declaration is counted once however many areas it names. OpenFEMA dataset page.
How many floods has Allegany County had?
NOAA's Storm Events Database holds 105 flood or flash flood records for Allegany County from 1996 to 2026, on 53 days, with 0 deaths. By flood insurance claims since 1978 (OpenFEMA, as of September 8, 2026), Allegany County ranks 956th of 2,942 U.S. counties.
The National Flood Insurance Program has paid $715,000 on 193 claims filed in Allegany County; the most in one year was 79 in 1996. Claims count insured losses only: uninsured flood damage is not in this file.
The values, year by year
1978: 1 · 1979: 3 · 1980: 1 · 1981: 13 · 1983: 2 · 1984: 29 · 1987: 9 · 1989: 7 · 1996: 79 · 1998: 6 · 2000: 6 · 2001: 3 · 2003: 8 · 2004: 3 · 2005: 2 · 2007: 3 · 2008: 1 · 2009: 2 · 2010: 5 · 2011: 3 · 2012: 1 · 2015: 2 · 2016: 1 · 2021: 2 · 2024: 1; the other years: 0.
Source: FEMA OpenFEMA NFIP Redacted Claims, as of September 8, 2026; claims by year of loss, payments in the dollars of the year paid. OpenFEMA dataset page.
FEMA's modeled risk for Allegany County
FEMA's National Risk Index rates Allegany County Relatively Low overall, with an expected annual loss of $26.9 million. These are FEMA's model estimates of future loss from 18 hazards, not a count of what happened; they can differ from the record above.
| Hazard | Risk rating | Expected annual loss | Modeled frequency |
|---|---|---|---|
| Riverine Flooding | Relatively Moderate | $24M | 1.6 a year (modeled) |
| Strong Wind | Relatively Moderate | $841K | 1.8 a year (modeled) |
| Lightning | Relatively Moderate | $330K | 31 a year (modeled) |
| Landslide | Relatively Low | $8K | about once a year (modeled) |
| Hurricane | Relatively Low | $303K | once in about 42 years (modeled) |
| Tornado | Relatively Low | $864K | once in about 5 years (modeled) |
| Cold Wave | Relatively Low | $645K | 4.1 a year (modeled) |
| Ice Storm | Relatively Low | $39K | once in about 3 years (modeled) |
Source: FEMA National Risk Index, county table, December 2025 release. FEMA's National Risk Index map.
Counties that share a border with Allegany County
Source: U.S. Census Bureau county adjacency file; NOAA NCEI Storm Events Database, records since 1950. The Census Bureau's adjacency file.
Next
- Tornadoes in New YorkEvery New York tornado since 1950 and the counties with the most per square mile
- Severe thunderstorm wind in New YorkThe state's severe thunderstorm wind events, by county, year and month
- The New York recordEvery hazard in the state, its deadliest events and its federal declarations
- FEMA's risk rating for each hazard in Allegany CountyThe hazard risk calculator: 18 hazards beside the county's record
- Download Allegany County's FEMA declarations (CSV)25 rows: every declaration that named the county, for your own analysis