NHC HURDAT2 · SPC Tornado Database
Hurricanes and Tornadoes That Hit Troy, IL
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
4 tropical systems have passed within 75 miles of Troy, Illinois since 1851, 0 of them at hurricane strength; the most recent was Olga in 2019. Since 1950, 164 tornadoes have touched down within 25 miles, 18 of them rated EF3 or stronger.
- Hurricanes
- 0
- Tropical storms
- 4
- Tornadoes
- 164
- EF3 or stronger
- 18
within 75 mi, since 1851
below hurricane strength
within 25 mi, since 1950
52 deaths in all
What the records show for Troy
None of the 4 tropical systems was at hurricane strength as it passed Troy; the strongest was Ike in 2008, a tropical storm with 49 mph winds when its centre passed 17 miles away. The record near Troy begins with an unnamed storm in 1902; the most recent system was Olga in 2019, a tropical storm 75 miles away. Of the 4 systems, 2 have come since 2000. Troy has more tropical storms and hurricanes within 75 miles than 79% of the 548 Illinois cities on this site. The highest rating among the 164 tornadoes within 25 miles is F4 or EF4, reached 5 times; the most recent, on April 22, 2011, came within 11 miles. The deadliest, an F4 on February 10, 1959, killed 21 people. Of the 164, 13 had paths within 5 miles of the city centre, and 86 have come since 2000. April has had the most tornadoes, 36. The most recent tornado was on May 16, 2025. Troy has more tornadoes within 25 miles than 69% of the 548 Illinois cities. Hail has been reported within 10 miles 154 times since 1965, with stones up to 3.5 inches. Troy has more hail reports within 10 miles than 67% of the 548 Illinois cities.
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Tropical storms and hurricanes near Troy
| Year | Storm | Closest | Strength when closest | Peak |
|---|---|---|---|---|
| 2019 | OlgaOct 26 | 75 mi | Tropical storm (39 mph) | Tropical storm |
| 2008 | IkeSep 14 | 17 mi | Tropical storm (49 mph) | Category 4 |
| 1941 | Unnamed 1941 stormSep 25 | 50 mi | Tropical storm (40 mph) | Category 3 |
| 1902 | Unnamed 1902 stormJun 28 | 7 mi | Tropical storm (40 mph) | Category 1 |
Strength is the sustained wind on the track at the closest point, which is not the wind felt in Troy: 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 Troy
By decade
- 2020s28(1 EF3+)
- 2010s25(3 EF3+)
- 2000s33
- 1990s15
- 1980s11(5 EF3+)
- 1970s12(1 EF3+)
- 1960s17(3 EF3+)
- 1950s23(5 EF3+)
| Date | Rating | Distance | Path | Killed / injured |
|---|---|---|---|---|
| Feb 10, 1959 | F4 | 15 mi | 23.9 mi | 21 / 345 |
| Feb 24, 1956 | F4 | 10 mi | 77.6 mi | 6 / 36 |
| Jan 24, 1967 | F4 | 14 mi | 25 mi | 3 / 216 |
| Apr 22, 2011 | EF4 | 11 mi | 21.3 mi | 0 / 5 |
| Apr 3, 1981 | F4 | 7 mi | 11.9 mi | 0 / 32 |
| Dec 10, 2021 | EF3 | 7 mi | 4.22 mi | 6 / 1 |
| May 15, 1968 | F3 | 23 mi | 2 mi | 4 / 60 |
| Dec 2, 1982 | F3 | 17 mi | 10.5 mi | 2 / 0 |
| Dec 2, 1950 | F3 | 12 mi | 18 mi | 2 / 25 |
| Apr 5, 1958 | F3 | 20 mi | 60.5 mi | 1 / 8 |
| May 31, 2013 | EF3 | 9 mi | 10.64 mi | 0 / 0 |
| May 31, 2013 | EF3 | 16 mi | 31.71 mi | 0 / 8 |
The strongest 12 of 164, by rating and then by deaths. Ratings before February 2007 are on the original Fujita scale.
Hail in Troy
The Storm Prediction Center has 154 hail reports within 10 miles of Troy since 1965, made on 92 separate days. Of these, 115 were 1 inch across or larger, and 8 reached 2 inches. The largest, 3.5 inches, fell on April 28, 2012. The most recent report is from May 16, 2025. April has the most reports, 42.
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 Belleville Siu Rsch, IL, 14 miles south of Troy at 450 feet. July is the warmest, with an average high of 90°F and low of 68°F; January is the coolest, at 43°F and 24°F. May is the wettest at 5.1 inches of precipitation on average and February the driest at 2.2 inches; the year adds up to 43.4 inches over 71 days with at least a tenth of an inch. Highs reach 90°F on about 53 days a year, almost all from May to September. Lows fall below freezing on about 94 nights a year. Snowfall averages 11.2 inches a year, most of it in January. That 43.4 inches is more than at 117 of the 146 Illinois stations used on this site (80%). Maryville, 4 miles west, has its own station (Alton - Melvin Price L&D, IL): 41.9 inches a year, 1.5 less than here, and a July average high of 87°F against 90°F.
| Month | High °F | Low °F | Precip. in | Days ≥ 0.1" | Snow in |
|---|---|---|---|---|---|
| Jan | 43 | 24 | 2.6 | 5 | 3.4 |
| Feb | 49 | 28 | 2.2 | 4 | 3.3 |
| Mar | 59 | 36 | 3.4 | 7 | 1.0 |
| Apr | 71 | 46 | 4.9 | 8 | 0.0 |
| May | 79 | 56 | 5.1 | 8 | 0.0 |
| Jun | 87 | 65 | 4.6 | 7 | 0.0 |
| Jul | 90 | 68 | 4.0 | 6 | 0.0 |
| Aug | 89 | 65 | 3.9 | 5 | 0.0 |
| Sep | 83 | 57 | 3.4 | 5 | 0.0 |
| Oct | 73 | 47 | 3.1 | 6 | 0.0 |
| Nov | 58 | 37 | 3.6 | 6 | 0.6 |
| Dec | 46 | 28 | 2.6 | 5 | 2.9 |
| Year | 69 | 46 | 43.4 | 71 | 11.2 |
Averages for 1991–2020 at Belleville Siu Rsch, IL (450 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 152 flood, rain, thunderstorm wind and lightning events that began within 10 miles of Troy: 147 thunderstorm wind reports and 5 flash floods. They killed 0 people and injured 6, and the NWS estimated $864,000 in property and crop damage. The strongest thunderstorm gust on record here was 90 mph, on June 10, 2003. July has had the most flash floods, 4 of 5. Of the 547 Illinois cities on this site with a flash flood on record, 28 have had fewer than Troy.
March 14, 2025: thunderstorm wind 8 miles from the centre of Troy — 2 injured, $150,000 damage.
March 14, 2025: thunderstorm wind 9 miles from the centre of Troy — 2 injured, $35,000 damage.
June 11, 2002: thunderstorm wind 10 miles from the centre of Troy — 1 injured.
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
Madison County, which includes Troy, has been named in 16 federal disaster or emergency declarations since 1969, 13 of them major disasters (by incident: 5 floods, 5 severe storms, 2 biological emergencies, 2 tornadoes). The latest major disaster declaration was Covid-19 Pandemic, on March 26, 2020. FEMA's National Risk Index gives Madison County a Relatively Moderate rating for natural hazard risk overall; by hazard: Relatively High for tornadoes, hail, lightning and heat waves; Relatively Moderate for inland flooding and strong wind; Very Low for hurricanes. It models the county's expected loss from all 18 hazards it covers at $154.9 million a year, the 7th highest of 102 Illinois counties; of the hazards above, the largest share, $56.2 million (36%), 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
- Maryville, IL4 mi
- Glen Carbon, IL5 mi
- Saint Jacob, IL6 mi
- Collinsville, IL7 mi
- Edwardsville, IL7 mi
- Caseyville, IL9 mi
- O Fallon, IL9 mi
- Lebanon, IL9 mi
- Fairview Heights, IL11 mi
- South Roxana, IL12 mi
- Highland, IL12 mi
- Granite City, IL12 mi
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