NHC HURDAT2 · SPC Tornado Database
Hurricanes and Tornadoes That Hit Gravois Mills, 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 Gravois Mills, Missouri since 1851, 0 of them at hurricane strength; the most recent was an unnamed storm in 1902. Since 1950, 79 tornadoes have touched down within 25 miles, 3 of them rated EF3 or stronger.
- Hurricanes
- 0
- Tropical storms
- 1
- Tornadoes
- 79
- EF3 or stronger
- 3
within 75 mi, since 1851
below hurricane strength
within 25 mi, since 1950
4 deaths in all
What the records show for Gravois Mills
None of the 1 tropical systems was at hurricane strength as it passed Gravois Mills; the strongest was an unnamed storm in 1902, a tropical storm with 40 mph winds when its centre passed 52 miles away. Of the 334 Missouri cities on this site, 62% have more tropical storms and hurricanes within 75 miles than Gravois Mills. The highest rating among the 79 tornadoes within 25 miles is F3 or EF3, reached 3 times; the most recent, on May 22, 2019, came within 14 miles. The deadliest, an F3 on May 4, 2003, killed 4 people. Of the 79, 8 had paths within 5 miles of the city centre, and 27 have come since 2000. May has had the most tornadoes, 27. The most recent tornado was on April 20, 2025. Of the 334 Missouri cities, 66% have more tornadoes within 25 miles than Gravois Mills. Hail has been reported within 10 miles 127 times since 1959, with stones up to 4.25 inches. Gravois Mills has more hail reports within 10 miles than 57% of the 334 Missouri cities.
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Tropical storms and hurricanes near Gravois Mills
| Year | Storm | Closest | Strength when closest | Peak |
|---|---|---|---|---|
| 1902 | Unnamed 1902 stormJun 28 | 52 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 Gravois Mills: 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 Gravois Mills
By decade
- 2020s5
- 2010s9(1 EF3+)
- 2000s13(1 EF3+)
- 1990s16
- 1980s13
- 1970s8(1 EF3+)
- 1960s10
- 1950s5
| Date | Rating | Distance | Path | Killed / injured |
|---|---|---|---|---|
| May 4, 2003 | F3 | 21 mi | 14 mi | 4 / 27 |
| May 22, 2019 | EF3 | 14 mi | 32.68 mi | 0 / 33 |
| Apr 20, 1973 | F3 | 25 mi | 19.4 mi | 0 / 4 |
| Mar 12, 2006 | F2 | 4 mi | 6 mi | 0 / 5 |
| Jun 7, 1990 | F2 | 20 mi | 0.5 mi | 0 / 0 |
| Oct 3, 1986 | F2 | 20 mi | 10 mi | 0 / 0 |
| Jul 9, 1982 | F2 | 16 mi | 0.5 mi | 0 / 0 |
| Mar 15, 1982 | F2 | 8 mi | 5 mi | 0 / 0 |
| May 12, 1980 | F2 | 23 mi | 42.7 mi | 0 / 0 |
| May 9, 1970 | F2 | 14 mi | 4.9 mi | 0 / 0 |
| Oct 14, 1966 | F2 | 13 mi | 2.3 mi | 0 / 0 |
| Oct 14, 1966 | F2 | 19 mi | 4.9 mi | 0 / 0 |
The strongest 12 of 79, by rating and then by deaths. Ratings before February 2007 are on the original Fujita scale.
Hail in Gravois Mills
The Storm Prediction Center has 127 hail reports within 10 miles of Gravois Mills since 1959, made on 77 separate days. Of these, 73 were 1 inch across or larger, and 7 reached 2 inches. The largest, 4.25 inches, fell on May 12, 2011. The most recent report is from May 26, 2024. May has the most reports, 36.
Source: NOAA Storm Prediction Center severe weather reports, data through 2025.
Weather by month in Gravois Mills
The nearest NOAA station with 1991–2020 climate normals is Lakeside, MO, 11 miles east of Gravois Mills at 590 feet. July is the warmest, with an average high of 89°F and low of 70°F; January is the coolest, at 44°F and 25°F. May is the wettest at 5.5 inches of precipitation on average and February and December the driest at 2.1 inches; the year adds up to 42.7 inches over 70 days with at least a tenth of an inch. Highs reach 90°F on about 35 days a year, almost all from June to September. Lows fall below freezing on about 88 nights a year. Snowfall averages 4.3 inches a year, most of it in January and December. That 42.7 inches is more than at 51 of the 134 Missouri stations used on this site (38%). Barnett, 11 miles northeast, has its own station (Eldon, MO): 45.0 inches a year, 2.3 more than here, and the same July average high, 89°F.
| Month | High °F | Low °F | Precip. in | Days ≥ 0.1" | Snow in |
|---|---|---|---|---|---|
| Jan | 44 | 25 | 2.2 | 4 | 1.7 |
| Feb | 49 | 29 | 2.1 | 4 | 0.6 |
| Mar | 59 | 37 | 3.0 | 6 | 0.3 |
| Apr | 69 | 47 | 5.0 | 8 | 0.0 |
| May | 77 | 56 | 5.5 | 9 | 0.0 |
| Jun | 85 | 65 | 4.2 | 7 | 0.0 |
| Jul | 89 | 70 | 3.8 | 6 | 0.0 |
| Aug | 88 | 68 | 4.2 | 6 | 0.0 |
| Sep | 81 | 61 | 4.2 | 5 | 0.0 |
| Oct | 71 | 49 | 3.4 | 6 | 0.0 |
| Nov | 59 | 39 | 3.0 | 5 | 0.0 |
| Dec | 48 | 30 | 2.1 | 4 | 1.7 |
| Year | 68 | 48 | 42.7 | 70 | 4.3 |
Averages for 1991–2020 at Lakeside, MO (590 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 Gravois Mills
Since 1996, the National Weather Service has logged 159 flood, rain, thunderstorm wind and lightning events that began within 10 miles of Gravois Mills: 118 thunderstorm wind reports, 23 flash floods, 11 floods and 7 heavy rain events. None is recorded as killing or injuring anyone; the NWS estimated $1.9 million in property and crop damage. The strongest thunderstorm gust on record here was 75 mph, on May 6, 2003. Of the 334 Missouri cities on this site with a flash flood on record, 192 have had fewer than Gravois Mills.
August 7, 2000: thunderstorm wind 6 miles from the centre of Gravois Mills — $520,000 damage.
December 27, 2015: flood 7 miles from the centre of Gravois Mills — $500,000 damage.
September 1, 2013: thunderstorm wind 7 miles from the centre of Gravois Mills — $100,000 damage.
NWS: “Several trees were blown down with a few onto cars. The boat docks at Mystic and Coffman Bends on Lake of the Ozarks were severely damaged.”
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
Morgan County, which includes Gravois Mills, has been named in 28 federal disaster or emergency declarations since 1973, 21 of them major disasters (by incident: 15 severe storms, 5 floods, 4 ice storms, 2 biological emergencies). The latest major disaster declaration was Severe Storms, Straight-Line Winds, and Flooding, on September 1, 2026. FEMA's National Risk Index gives Morgan County a Relatively Low rating for natural hazard risk overall; by hazard: Relatively Moderate for tornadoes, inland flooding, strong wind, lightning and heat waves; Relatively Low for hail; Very Low for hurricanes. It models the county's expected loss from all 18 hazards it covers at $21.7 million a year, the 42nd highest of 115 Missouri counties; of the hazards above, the largest share, $13.7 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 Gravois Mills
- Sunrise Beach, MO6 mi
- Lake Ozark, MO9 mi
- Barnett, MO11 mi
- Osage Beach, MO11 mi
- Stover, MO13 mi
- Versailles, MO14 mi
- Camdenton, MO14 mi
- Eldon, MO14 mi
- Linn Creek, MO14 mi
- Cole Camp, MO25 mi
- Lincoln, MO25 mi
- Russellville, MO26 mi
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