NHC HURDAT2 · SPC Tornado Database
Hurricanes and Tornadoes That Hit Dannemora, 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
6 tropical systems have passed within 75 miles of Dannemora, New York since 1851, 1 of them at hurricane strength; the most recent was Isaias in 2020. Since 1950, 7 tornadoes have touched down within 25 miles, 0 of them rated EF3 or stronger.
- Hurricanes
- 1
- Tropical storms
- 5
- Tornadoes
- 7
- EF3 or stronger
- 0
within 75 mi, since 1851
below hurricane strength
within 25 mi, since 1950
no recorded deaths
What the records show for Dannemora
The strongest storm to pass near Dannemora was an unnamed storm in 1900, a Category 1 hurricane with 75 mph winds when its centre passed 36 miles away. The record near Dannemora begins with an unnamed storm in 1866; the most recent system was Isaias in 2020, a tropical storm 41 miles away. Of the 6 systems, one has come since 2000. Of the 809 New York cities on this site, 49% have more hurricanes within 75 miles than Dannemora. The highest rating among the 7 tornadoes within 25 miles is F2, reached 3 times; the most recent, on August 3, 1970, came within 19 miles. Of the 7, none had a path within 5 miles of the city centre, and 2 have come since 2000. The most recent tornado was on June 10, 2025. Of the 809 New York cities, 95% have more tornadoes within 25 miles than Dannemora. Hail has been reported within 10 miles 35 times since 1965, with stones up to 1.75 inches (golf ball size). Of the 809 New York cities, 60% have more hail reports within 10 miles than Dannemora.
Compare Dannemora's storm record with another city →
Tropical storms and hurricanes near Dannemora
| Year | Storm | Closest | Strength when closest | Peak |
|---|---|---|---|---|
| 2020 | IsaiasAug 5 | 41 mi | Tropical storm (49 mph) | Category 1 |
| 1968 | Unnamed 1968 stormSep 11 | 75 mi | Tropical storm (51 mph) | Tropical storm |
| 1938 | Unnamed 1938 stormSep 22 | 8 mi | Tropical storm (59 mph) | Category 5 |
| 1929 | Unnamed 1929 stormOct 3 | 39 mi | Tropical storm (55 mph) | Category 4 |
| 1900 | Unnamed 1900 stormSep 12 | 36 mi | Category 1 (75 mph) | Category 4 |
| 1866 | Unnamed 1866 stormOct 30 | 37 mi | Tropical storm (46 mph) | Tropical storm |
Strength is the sustained wind on the track at the closest point, which is not the wind felt in Dannemora: 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 Dannemora
By decade
- 2020s1
- 2000s1
- 1970s1
- 1960s3
- 1950s1
| Date | Rating | Distance | Path | Killed / injured |
|---|---|---|---|---|
| Aug 3, 1970 | F2 | 19 mi | 4.5 mi | 0 / 7 |
| Jul 4, 1963 | F2 | 19 mi | 5.9 mi | 0 / 0 |
| Jun 13, 1961 | F2 | 24 mi | 7.9 mi | 0 / 0 |
| Jul 18, 1961 | F1 | 24 mi | 0.1 mi | 0 / 0 |
| Jun 21, 1953 | F1 | 24 mi | 1.5 mi | 0 / 0 |
| Jun 10, 2025 | EF0 | 7 mi | 0.52 mi | 0 / 0 |
| Jul 8, 2004 | F0 | 7 mi | 0.1 mi | 0 / 0 |
The strongest 7 of 7, by rating and then by deaths. Ratings before February 2007 are on the original Fujita scale.
Hail in Dannemora
The Storm Prediction Center has 35 hail reports within 10 miles of Dannemora since 1965, made on 24 separate days. Of these, 20 were 1 inch across or larger, and none reached 2 inches. The largest size, 1.75 inches (golf ball size), was reported on 4 days, most recently August 16, 2007. The most recent report is from July 4, 2023. August has the most reports, 14.
Source: NOAA Storm Prediction Center severe weather reports, data through 2025.
Weather by month in Dannemora
The nearest NOAA station with 1991–2020 climate normals is Dannemora, NY, 11 miles southwest of Dannemora at 1,340 feet. July is the warmest, with an average high of 79°F and low of 59°F; January is the coolest, at 28°F and 9°F. June is the wettest at 4.9 inches of precipitation on average and February the driest at 2.3 inches; the year adds up to 43.4 inches over 100 days with at least a tenth of an inch. Highs reach 90°F on about 2 days a year. Lows fall below freezing on about 158 nights a year. That 43.4 inches is more than at 65 of the 137 New York stations used on this site (47%). West Chazy, 4 miles southeast, has its own station (Plattsburgh International Airport, NY): 30.9 inches a year, 12.5 less than here, and a July average high of 81°F against 79°F.
| Month | High °F | Low °F | Precip. in | Days ≥ 0.1" |
|---|---|---|---|---|
| Jan | 28 | 9 | 2.9 | 8 |
| Feb | 31 | 11 | 2.3 | 7 |
| Mar | 40 | 20 | 2.8 | 8 |
| Apr | 53 | 33 | 3.8 | 8 |
| May | 67 | 45 | 4.0 | 9 |
| Jun | 75 | 54 | 4.9 | 10 |
| Jul | 79 | 59 | 4.2 | 9 |
| Aug | 78 | 57 | 4.1 | 8 |
| Sep | 71 | 50 | 3.9 | 9 |
| Oct | 58 | 39 | 4.7 | 10 |
| Nov | 44 | 28 | 2.9 | 8 |
| Dec | 33 | 16 | 2.9 | 8 |
| Year | 55 | 35 | 43.4 | 100 |
Averages for 1991–2020 at Dannemora, NY (1,340 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 Dannemora
Since 1996, the National Weather Service has logged 52 flood, rain, thunderstorm wind and lightning events that began within 10 miles of Dannemora: 42 thunderstorm wind reports, 4 flash floods, 4 floods, 1 heavy rain event and 1 lightning strike. None is recorded as killing or injuring anyone; the NWS estimated $1.1 million in property and crop damage. The strongest thunderstorm gust on record here was 69 mph, on August 7, 2006.
June 29, 2013: flood 4 miles from the centre of Dannemora — $150,000 damage.
NWS: “Heavy rainfall on saturated ground caused flooding in Central Clinton County. Tributaries to the Saranac River flooded local roads and highways, including General Leroy Manor Road, Route 374 in Cadyville between Trudeau Road and Church Road, as well as other local roads in the Rand Hill area.”
July 4, 2013: flash flood 7 miles from the centre of Dannemora — $125,000 damage.
June 16, 2005: flash flood 9 miles from the centre of Dannemora — $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
Clinton County, which includes Dannemora, has been named in 19 federal disaster or emergency declarations since 1993, 13 of them major disasters (by incident: 4 severe storms, 3 floods, 3 hurricanes, 3 snowstorms). The latest major disaster declaration was Severe Storms and Flooding, on July 22, 2023. FEMA's National Risk Index gives Clinton County a Relatively Low rating for natural hazard risk overall; by hazard: Relatively Moderate for inland flooding, strong wind and lightning; Relatively Low for hurricanes, tornadoes and heat waves; Very Low for hail. It models the county's expected loss from all 18 hazards it covers at $28.0 million a year, the 31st highest of 62 New York counties; of the hazards above, the largest share, $21.9 million (78%), 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.