NHC HURDAT2 · SPC Tornado Database
Hurricanes and Tornadoes That Hit Troy, ID
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
No tropical storm or hurricane has passed within 75 miles of Troy, Idaho since records began in 1851. Since 1950, 7 tornadoes have touched down within 25 miles, 0 of them rated EF3 or stronger.
- Hurricanes
- 0
- Tropical storms
- 0
- 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 Troy
The strongest of the 7 tornadoes within 25 miles was an F2 on May 8, 1962; its path came within 24 miles. Of the 7, one had a path within 5 miles of the city centre, and none has come since 2000. The most recent tornado was on May 31, 1997. Of the 90 Idaho cities on this site, 57% have more tornadoes within 25 miles than Troy. Hail has been reported within 10 miles 4 times since 1966, with stones up to 1.75 inches (golf ball size). Of the 90 Idaho cities, 87% have more hail reports within 10 miles than Troy.
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Tornadoes within 25 miles of Troy
By decade
- 1990s3
- 1980s1
- 1970s1
- 1960s2
| Date | Rating | Distance | Path | Killed / injured |
|---|---|---|---|---|
| May 8, 1962 | F2 | 24 mi | 9.1 mi | 0 / 0 |
| May 19, 1986 | F1 | in town | 2 mi | 0 / 0 |
| May 2, 1973 | F1 | 12 mi | 0.1 mi | 0 / 0 |
| Jun 20, 1969 | F1 | 17 mi | 1 mi | 0 / 0 |
| May 31, 1997 | F0 | 25 mi | 0.1 mi | 0 / 0 |
| Jun 1, 1991 | F0 | 17 mi | 0.1 mi | 0 / 0 |
| May 1, 1991 | F0 | 16 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 Troy
The Storm Prediction Center has 4 hail reports within 10 miles of Troy since 1966. All were 1 inch across or larger, and none reached 2 inches. The largest, 1.75 inches (golf ball size), fell on July 12, 1966. The most recent report is from June 5, 2022.
Source: NOAA Storm Prediction Center severe weather reports, data through 2025.
Weather by month in Troy
The nearest NOAA station with 1991–2020 climate normals is Moscow U Of I, ID, 10 miles west of Troy at 2,660 feet. August is the warmest, with an average high of 86°F and low of 45°F; December is the coolest, at 36°F and 22°F. November and December are the wettest at 3.5 inches of precipitation on average and July and August the driest at 0.7 inches; the year adds up to 27.9 inches over 75 days with at least a tenth of an inch. Highs reach 90°F on about 23 days a year, almost all from June to September. Lows fall below freezing on about 139 nights a year. Snowfall averages 50.9 inches a year, most of it in December. That 27.9 inches is more than at 59 of the 66 Idaho stations used on this site (89%). Pullman, WA, 21 miles west, has its own station (Pullman 2 NW, WA): 20.5 inches a year, 7.4 less than here, and an August average high of 85°F against 86°F.
| Month | High °F | Low °F | Precip. in | Days ≥ 0.1" | Snow in |
|---|---|---|---|---|---|
| Jan | 37 | 22 | 3.3 | 9 | 14.5 |
| Feb | 42 | 24 | 2.6 | 7 | 8.6 |
| Mar | 50 | 28 | 3.1 | 9 | 4.9 |
| Apr | 58 | 32 | 2.8 | 7 | 1.0 |
| May | 67 | 38 | 2.6 | 7 | 0.2 |
| Jun | 73 | 42 | 1.7 | 5 | 0.0 |
| Jul | 84 | 45 | 0.7 | 2 | 0.0 |
| Aug | 86 | 45 | 0.7 | 2 | 0.0 |
| Sep | 76 | 40 | 1.0 | 3 | 0.0 |
| Oct | 61 | 33 | 2.4 | 6 | 0.2 |
| Nov | 45 | 27 | 3.5 | 10 | 6.0 |
| Dec | 36 | 22 | 3.5 | 10 | 15.5 |
| Year | 60 | 33 | 27.9 | 75 | 50.9 |
Averages for 1991–2020 at Moscow U Of I, ID (2,660 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 Troy
Since 1996, the National Weather Service has logged 6 flood, rain, thunderstorm wind and lightning events that began within 10 miles of Troy: 2 flash floods, 2 floods, 1 heavy rain event and 1 thunderstorm wind report. None is recorded as killing or injuring anyone; the NWS estimated $2,500 in property and crop damage. The strongest thunderstorm gust on record here was 67 mph, on September 25, 2024.
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
Latah County, which includes Troy, has been named in 16 federal disaster or emergency declarations since 1964, 12 of them major disasters (by incident: 5 floods, 3 fires, 3 severe storms, 2 biological emergencies). The latest major disaster declaration was Severe Storms, Straight-Line Winds, Flooding, Landslides, and Mudslides, on June 30, 2026. FEMA's National Risk Index gives Latah County a Very Low rating for natural hazard risk overall; by hazard: Relatively Low for inland flooding, strong wind and heat waves; Very Low for tornadoes, hail and lightning. It models the county's expected loss from all 18 hazards it covers at $13.3 million a year, the 20th highest of 44 Idaho counties; of the hazards above, the largest share, $8.4 million (63%), 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 Troy
- Moscow, ID9 mi
- Genesee, ID16 mi
- Pullman, WA21 mi
- Lapwai, ID24 mi
- Lewiston, ID27 mi
- Clarkston, WA29 mi
- Orofino, ID32 mi
- Colfax, WA33 mi
- St Maries, ID37 mi
- Pomeroy, WA44 mi
- Kamiah, ID49 mi
- Cottonwood, ID52 mi
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