NHC HURDAT2 · SPC Tornado Database
Hurricanes and Tornadoes That Hit Conewango Valley, NY
Every tropical system within 75 miles since 1851 and every tornado within 25 miles since 1950.
Data: NOAA NHC HURDAT2 and NOAA SPC tornado and hail reports, through 2025 · Updated
10 tropical systems have passed within 75 miles of Conewango Valley, New York since 1851, 1 of them at hurricane strength; the most recent was Opal in 1995. Since 1950, 42 tornadoes have touched down within 25 miles, 6 of them rated EF3 or stronger.
- Hurricanes
- 1
- Tropical storms
- 9
- Tornadoes
- 42
- EF3 or stronger
- 6
within 75 mi, since 1851
below hurricane strength
within 25 mi, since 1950
2 deaths in all
What the records show for Conewango Valley
The strongest storm to pass near Conewango Valley was Hazel in 1954, a Category 1 hurricane with 76 mph winds when its centre passed 54 miles away. The record near Conewango Valley begins with an unnamed storm in 1876; the most recent system was Opal in 1995, a tropical storm 35 miles away. None of the 10 systems has come since 2000. Of the 809 New York cities on this site, 49% have more hurricanes within 75 miles than Conewango Valley. The strongest of the 42 tornadoes within 25 miles was an F4 on May 31, 1985; its path came within 24 miles. The deadliest, an F3 on May 2, 1983, killed 2 people. Of the 42, one had a path within 5 miles of the city centre, and 14 have come since 2000. July has had the most tornadoes, 17. The most recent tornado was on June 9, 2025. Conewango Valley has more tornadoes within 25 miles than 89% of the 809 New York cities. Hail has been reported within 10 miles 9 times since 2002, with stones up to 1.25 inches (half dollar size). Of the 809 New York cities, 94% have more hail reports within 10 miles than Conewango Valley.
Compare Conewango Valley's storm record with another city →
Tropical storms and hurricanes near Conewango Valley
| Year | Storm | Closest | Strength when closest | Peak |
|---|---|---|---|---|
| 1995 | OpalOct 6 | 35 mi | Tropical storm (44 mph) | Category 4 |
| 1989 | HugoSep 23 | 37 mi | Tropical storm (41 mph) | Category 5 |
| 1955 | ConnieAug 14 | 28 mi | Tropical storm (52 mph) | Category 4 |
| 1954 | HazelOct 16 | 54 mi | Category 1 (76 mph) | Category 4 |
| 1928 | Unnamed 1928 stormSep 20 | 52 mi | Tropical storm (40 mph) | Category 5 |
| 1902 | Unnamed 1902 stormJun 29 | 34 mi | Tropical storm (40 mph) | Category 1 |
| 1896 | Unnamed 1896 stormSep 30 | 17 mi | Tropical storm (58 mph) | Category 3 |
| 1893 | Unnamed 1893 stormOct 14 | 70 mi | Tropical storm (70 mph) | Category 3 |
| 1878 | Unnamed 1878 stormSep 13 | 10 mi | Tropical storm (46 mph) | Category 2 |
| 1876 | Unnamed 1876 stormSep 18 | 72 mi | Tropical storm (49 mph) | Category 3 |
Strength is the sustained wind on the track at the closest point, which is not the wind felt in Conewango Valley: a hurricane's worst winds sit within a few dozen miles of its centre, and inland cities are usually past that.
Tornadoes within 25 miles of Conewango Valley
By decade
- 2020s4
- 2010s8
- 2000s2
- 1990s8
- 1980s7(3 EF3+)
- 1970s4
- 1960s8(3 EF3+)
- 1950s1
| Date | Rating | Distance | Path | Killed / injured |
|---|---|---|---|---|
| May 31, 1985 | F4 | 24 mi | 28 mi | 0 / 0 |
| May 2, 1983 | F3 | 5 mi | 28 mi | 2 / 0 |
| May 31, 1985 | F3 | 10 mi | 13 mi | 0 / 10 |
| Jun 20, 1969 | F3 | 8 mi | 84.1 mi | 0 / 0 |
| Jul 24, 1967 | F3 | 22 mi | 11.4 mi | 0 / 0 |
| May 15, 1961 | F3 | 25 mi | 3 mi | 0 / 0 |
| Apr 14, 2019 | EF2 | 20 mi | 18 mi | 0 / 0 |
| Nov 14, 2011 | EF2 | 20 mi | 4.13 mi | 0 / 0 |
| Jul 24, 2010 | EF2 | 6 mi | 7.62 mi | 0 / 0 |
| Jul 24, 2010 | EF2 | 21 mi | 7.61 mi | 0 / 0 |
| Jun 13, 1994 | F2 | 2 mi | 3 mi | 0 / 1 |
| Jul 12, 1992 | F2 | 19 mi | 4 mi | 0 / 0 |
The strongest 12 of 42, by rating and then by deaths. Ratings before February 2007 are on the original Fujita scale.
Hail in Conewango Valley
The Storm Prediction Center has 9 hail reports within 10 miles of Conewango Valley since 2002, made on 7 separate days. Of these, 4 were 1 inch across or larger, and none reached 2 inches. The largest, 1.25 inches (half dollar size), fell on April 28, 2002. The most recent report is from June 5, 2025.
Source: NOAA Storm Prediction Center severe weather reports, data through 2025.
Weather by month in Conewango Valley
The nearest NOAA station with 1991–2020 climate normals is Little Valley, NY, 12 miles east of Conewango Valley at 1,625 feet. July is the warmest, with an average high of 79°F and low of 55°F; January is the coolest, at 31°F and 14°F. July is the wettest at 5.2 inches of precipitation on average and February the driest at 2.5 inches; the year adds up to 49.2 inches over 109 days with at least a tenth of an inch. June to November, the hurricane season months, bring 55% of the year's precipitation (27.3 of 49.2 inches); the other six months are drier. September has brought the most of the 10 tropical systems that passed within 75 miles (5); a normal September there has highs of 71°F and 4.5 inches of precipitation. Highs reach 90°F on about 1 days a year. Lows fall below freezing on about 166 nights a year. Snowfall averages 133.3 inches a year, most of it in January. That 49.2 inches is more than at 118 of the 137 New York stations used on this site (86%). Kennedy, 7 miles south, has its own station (Jamestown 4 ENE, NY): 46.0 inches a year, 3.2 less than here, and a July average high of 80°F against 79°F.
| Month | High °F | Low °F | Precip. in | Days ≥ 0.1" | Snow in |
|---|---|---|---|---|---|
| Jan | 31 | 14 | 4.3 | 11 | 36.1 |
| Feb | 33 | 13 | 2.5 | 7 | 25.9 |
| Mar | 41 | 19 | 3.5 | 8 | 18.9 |
| Apr | 55 | 31 | 3.9 | 10 | 4.0 |
| May | 67 | 42 | 3.9 | 8 | 0.0 |
| Jun | 75 | 51 | 4.6 | 10 | 0.0 |
| Jul | 79 | 55 | 5.2 | 9 | 0.0 |
| Aug | 77 | 54 | 4.3 | 8 | 0.0 |
| Sep | 71 | 47 | 4.5 | 8 | 0.0 |
| Oct | 59 | 37 | 4.7 | 10 | 1.0 |
| Nov | 46 | 29 | 4.0 | 10 | 16.3 |
| Dec | 35 | 21 | 3.8 | 11 | 31.1 |
| Year | 56 | 34 | 49.2 | 109 | 133.3 |
Averages for 1991–2020 at Little Valley, NY (1,625 ft), from NOAA NCEI U.S. Climate Normals. Normals describe the station; the farther a place is from it, and the bigger the difference in height, the more its weather can differ.
Floods, thunderstorm wind and lightning near Conewango Valley
Since 1996, the National Weather Service has logged 129 flood, rain, thunderstorm wind and lightning events that began within 10 miles of Conewango Valley: 101 thunderstorm wind reports, 23 flash floods and 5 heavy rain events. None is recorded as killing or injuring anyone; the NWS estimated $1.6 million in property and crop damage. The strongest thunderstorm gust on record here was 69 mph, on October 26, 2010. Of the 798 New York cities on this site with a flash flood on record, 370 have had fewer than Conewango Valley.
May 13, 2014: flash flood 10 miles from the centre of Conewango Valley — $250,000 damage.
July 14, 2015: flash flood 4 miles from the centre of Conewango Valley — $150,000 damage.
May 21, 2014: flash flood 7 miles from the centre of Conewango Valley — $100,000 damage.
Source: NOAA NCEI Storm Events Database, events whose starting point is on record, 1996 to June 30, 2026. Damage is the NWS estimate in the dollars of the year, not insured losses, and NWS notes that some reports are unverified.
Flood insurance claims, disaster declarations and FEMA risk ratings
Cattaraugus County, which includes Conewango Valley, has been named in 26 federal disaster or emergency declarations since 1967, 15 of them major disasters (by incident: 7 severe storms, 7 snowstorms, 3 floods, 2 biological emergencies). The latest major disaster declaration was Covid-19 Pandemic, on March 20, 2020. FEMA's National Risk Index gives Cattaraugus County a Relatively Moderate rating for natural hazard risk overall; by hazard: Relatively High for lightning; Relatively Moderate for tornadoes, inland flooding and strong wind; Relatively Low for hurricanes; Very Low for hail and heat waves. It models the county's expected loss from all 18 hazards it covers at $33.8 million a year, the 26th highest of 62 New York counties; of the hazards above, the largest share, $28.7 million (85%), is from inland flooding.
Claims: FEMA, OpenFEMA Dataset FIMA NFIP Redacted Claims – v3, summed over ZIP codes; payments in the dollars of each year, not adjusted for inflation. Declarations: Disaster Declarations Summaries – v2, by county. Retrieved October 25, 2026. This product uses the Federal Emergency Management Agency's OpenFEMA API, but is not endorsed by FEMA. The Federal Government or FEMA cannot vouch for the data or analyses derived from these data after the data have been retrieved from the Agency's website(s).
Risk ratings: FEMA, National Risk Index county table, December 2025 (v1.20), retrieved October 26, 2026; ratings compare counties nationwide, are meant for planning and are no substitute for a local risk assessment. This product uses the Federal Emergency Management Agency's National Risk Index dataset API or downloadable datasets but is not endorsed by FEMA. The Federal Government or FEMA cannot vouch for the data or analyses derived from these data after the data have been retrieved from the Agency's website(s).
What counts as a pass, the distances and the sources: how this storm history is built.
Cities near Conewango Valley
- Kennedy, NY7 mi
- Randolph, NY8 mi
- South Dayton, NY8 mi
- Cattaraugus, NY10 mi
- Sinclairville, NY11 mi
- Falconer, NY12 mi
- Little Valley, NY12 mi
- Frewsburg, NY15 mi
- Gowanda, NY15 mi
- Forestville, NY15 mi
- Jamestown, NY15 mi
- Salamanca, NY17 mi
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