NHC HURDAT2 · SPC Tornado Database
Hurricanes and Tornadoes That Hit Unionville, MO
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
1 tropical system has passed within 75 miles of Unionville, Missouri since 1851, 0 of them at hurricane strength; the most recent was an unnamed storm in 1900. Since 1950, 63 tornadoes have touched down within 25 miles, 4 of them rated EF3 or stronger.
- Hurricanes
- 0
- Tropical storms
- 1
- Tornadoes
- 63
- EF3 or stronger
- 4
within 75 mi, since 1851
below hurricane strength
within 25 mi, since 1950
1 deaths in all
What the records show for Unionville
None of the 1 tropical systems was at hurricane strength as it passed Unionville; the strongest was an unnamed storm in 1900, a tropical storm with 41 mph winds when its centre passed 44 miles away. Of the 334 Missouri cities on this site, 62% have more tropical storms and hurricanes within 75 miles than Unionville. The highest rating among the 63 tornadoes within 25 miles is F4, reached 4 times; the most recent, on June 2, 1980, came within 20 miles. The deadliest, an EF1 on May 13, 2009, killed 1 person. Of the 63, 5 had paths within 5 miles of the city centre, and 29 have come since 2000. June has had the most tornadoes, 16. The most recent tornado was on March 5, 2022. Of the 334 Missouri cities, 88% have more tornadoes within 25 miles than Unionville. Hail has been reported within 10 miles 51 times since 1960, with stones up to 4.5 inches (grapefruit size). Of the 334 Missouri cities, 87% have more hail reports within 10 miles than Unionville.
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Tropical storms and hurricanes near Unionville
| Year | Storm | Closest | Strength when closest | Peak |
|---|---|---|---|---|
| 1900 | Unnamed 1900 stormSep 11 | 44 mi | Tropical storm (41 mph) | Category 4 |
Strength is the sustained wind on the track at the closest point, which is not the wind felt in Unionville: 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 Unionville
By decade
- 2020s1
- 2010s13
- 2000s15
- 1990s8
- 1980s8(1 EF3+)
- 1970s6(1 EF3+)
- 1960s8(1 EF3+)
- 1950s4(1 EF3+)
| Date | Rating | Distance | Path | Killed / injured |
|---|---|---|---|---|
| Jun 2, 1980 | F4 | 20 mi | 31.2 mi | 0 / 0 |
| Apr 21, 1973 | F4 | 18 mi | 14.6 mi | 0 / 1 |
| Jan 24, 1967 | F4 | 24 mi | 25.7 mi | 0 / 2 |
| May 20, 1959 | F4 | 18 mi | 17.2 mi | 0 / 5 |
| Mar 5, 2022 | EF2 | 25 mi | 9.87 mi | 0 / 0 |
| Mar 6, 2017 | EF2 | 16 mi | 9.66 mi | 0 / 0 |
| Mar 6, 2017 | EF2 | 15 mi | 14.92 mi | 0 / 0 |
| Jul 15, 1992 | F2 | 17 mi | 3 mi | 0 / 0 |
| Apr 26, 1991 | F2 | 19 mi | 15 mi | 0 / 2 |
| May 8, 1988 | F2 | 17 mi | 47 mi | 0 / 0 |
| Jun 2, 1980 | F2 | 11 mi | 19.8 mi | 0 / 5 |
| Jun 2, 1980 | F2 | 22 mi | 4.7 mi | 0 / 0 |
The strongest 12 of 63, by rating and then by deaths. Ratings before February 2007 are on the original Fujita scale.
Hail in Unionville
The Storm Prediction Center has 51 hail reports within 10 miles of Unionville since 1960, made on 39 separate days. Of these, 31 were 1 inch across or larger, and 4 reached 2 inches. The largest, 4.5 inches (grapefruit size), fell on July 27, 2008. The most recent report is from May 24, 2024. June has the most reports, 18.
Source: NOAA Storm Prediction Center severe weather reports, data through 2025.
Weather by month in Unionville
The nearest NOAA station with 1991–2020 climate normals is Unionville, MO, 2 miles west of Unionville at 1,060 feet. July is the warmest, with an average high of 86°F and low of 66°F; January is the coolest, at 32°F and 15°F. May is the wettest at 6.0 inches of precipitation on average and January the driest at 1.4 inches; the year adds up to 41.9 inches over 74 days with at least a tenth of an inch. Highs reach 90°F on about 20 days a year, almost all from June to September. Lows fall below freezing on about 134 nights a year. Snowfall averages 28.7 inches a year, most of it in February. That 41.9 inches is more than at 41 of the 134 Missouri stations used on this site (31%). Centerville, IA, 18 miles north, has its own station (Centerville, IA): 36.3 inches a year, 5.6 less than here, and the same July average high, 86°F.
| Month | High °F | Low °F | Precip. in | Days ≥ 0.1" | Snow in |
|---|---|---|---|---|---|
| Jan | 32 | 15 | 1.4 | 4 | 6.0 |
| Feb | 38 | 18 | 1.7 | 5 | 9.9 |
| Mar | 50 | 29 | 2.6 | 6 | 3.0 |
| Apr | 62 | 39 | 3.8 | 8 | 1.2 |
| May | 71 | 52 | 6.0 | 9 | 0.4 |
| Jun | 81 | 61 | 5.6 | 7 | 0.0 |
| Jul | 86 | 66 | 4.6 | 6 | 0.0 |
| Aug | 84 | 64 | 5.3 | 7 | 0.0 |
| Sep | 76 | 55 | 3.5 | 6 | 0.0 |
| Oct | 64 | 43 | 3.2 | 6 | 0.5 |
| Nov | 50 | 30 | 2.3 | 5 | 1.9 |
| Dec | 37 | 20 | 1.9 | 5 | 5.8 |
| Year | 61 | 41 | 41.9 | 74 | 28.7 |
Averages for 1991–2020 at Unionville, MO (1,060 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 Unionville
Since 1996, the National Weather Service has logged 47 flood, rain, thunderstorm wind and lightning events that began within 10 miles of Unionville: 31 thunderstorm wind reports, 14 flash floods, 1 flood and 1 heavy rain event. None is recorded as killing or injuring anyone; the NWS estimated $734,000 in property and crop damage. The strongest thunderstorm gust on record here was 81 mph, on December 15, 2021. May has had the most flash floods, 6 of 14. Of the 334 Missouri cities on this site with a flash flood on record, 126 have had fewer than Unionville.
June 26, 2011: flash flood 9 miles from the centre of Unionville — $520,000 damage.
NWS: “Several roads and bridges washed out in various locations across the southeast part of the county.”
March 12, 2006: thunderstorm wind 2 miles from the centre of Unionville — $200,000 damage.
NWS: “$200,000 in wind damage reported by FEMA from the North Central Missouri Electric Cooperative.”
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
Putnam County, which includes Unionville, has been named in 19 federal disaster or emergency declarations since 1973, 14 of them major disasters (by incident: 11 severe storms, 3 ice storms, 2 biological emergencies, 2 floods). The latest major disaster declaration was Severe Storms, Straight-Line Winds, Tornadoes, and Flooding, on August 3, 2026. FEMA's National Risk Index gives Putnam County a Very Low rating for natural hazard risk overall; by hazard: Relatively Low for tornadoes, hail, strong wind and heat waves; Very Low for hurricanes, inland flooding and lightning. It models the county's expected loss from all 18 hazards it covers at $3.4 million a year, the 114th highest of 115 Missouri counties; of the hazards above, the largest share, $1.1 million (32%), 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 Unionville
- Centerville, IA18 mi
- Milan, MO21 mi
- Corydon, IA27 mi
- Kirksville, MO29 mi
- Princeton, MO33 mi
- Bloomfield, IA33 mi
- Albia, IA39 mi
- La Plata, MO40 mi
- Memphis, MO42 mi
- Chariton, IA42 mi
- Trenton, MO43 mi
- Leon, IA44 mi
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