NHC HURDAT2 · SPC Tornado Database
Hurricanes and Tornadoes That Hit Mio, MI
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
3 tropical systems have passed within 75 miles of Mio, Michigan since 1851, 0 of them at hurricane strength; the most recent was Connie in 1955. Since 1950, 36 tornadoes have touched down within 25 miles, 4 of them rated EF3 or stronger.
- Hurricanes
- 0
- Tropical storms
- 3
- Tornadoes
- 36
- 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 Mio
None of the 3 tropical systems was at hurricane strength as it passed Mio; the strongest was an unnamed storm in 1941, a tropical storm with 54 mph winds when its centre passed 42 miles away. The record near Mio begins with an unnamed storm in 1923; the most recent system was Connie in 1955, a tropical storm 41 miles away. Of the 546 Michigan cities on this site, 75% have more tropical storms and hurricanes within 75 miles than Mio. The highest rating among the 36 tornadoes within 25 miles is F3, reached 4 times; the most recent, on March 27, 1991, came within 22 miles. The deadliest, an F3 on March 30, 1976, killed 1 person. Of the 36, none had a path within 5 miles of the city centre, and 10 have come since 2000. June has had the most tornadoes, 11. The most recent tornado was on June 5, 2024. Of the 546 Michigan cities, 73% have more tornadoes within 25 miles than Mio. Hail has been reported within 10 miles 31 times since 1981, with stones up to 1.75 inches (golf ball size). Of the 546 Michigan cities, 57% have more hail reports within 10 miles than Mio.
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Tropical storms and hurricanes near Mio
| Year | Storm | Closest | Strength when closest | Peak |
|---|---|---|---|---|
| 1955 | ConnieAug 14 | 41 mi | Tropical storm (40 mph) | Category 4 |
| 1941 | Unnamed 1941 stormSep 25 | 42 mi | Tropical storm (54 mph) | Category 3 |
| 1923 | Unnamed 1923 stormOct 19 | 49 mi | Tropical storm (40 mph) | Tropical storm |
Strength is the sustained wind on the track at the closest point, which is not the wind felt in Mio: 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 Mio
By decade
- 2020s1
- 2010s5
- 2000s4
- 1990s12(2 EF3+)
- 1980s8
- 1970s5(2 EF3+)
- 1950s1
| Date | Rating | Distance | Path | Killed / injured |
|---|---|---|---|---|
| Mar 30, 1976 | F3 | 22 mi | 6.4 mi | 1 / 7 |
| Mar 27, 1991 | F3 | 12 mi | 21 mi | 0 / 0 |
| Mar 27, 1991 | F3 | 22 mi | 35 mi | 0 / 0 |
| Mar 30, 1976 | F3 | 23 mi | 11.4 mi | 0 / 10 |
| Oct 18, 2007 | EF2 | 6 mi | 11.63 mi | 0 / 0 |
| May 28, 1995 | F2 | 6 mi | 1 mi | 0 / 0 |
| Mar 27, 1991 | F2 | 23 mi | 6 mi | 0 / 0 |
| Mar 30, 1976 | F2 | 21 mi | 4.9 mi | 0 / 0 |
| Aug 28, 2018 | EF1 | 23 mi | 0.16 mi | 0 / 0 |
| Sep 8, 2015 | EF1 | 18 mi | 8.93 mi | 0 / 0 |
| Jun 17, 2014 | EF1 | 24 mi | 1.58 mi | 0 / 0 |
| Jun 18, 2012 | EF1 | 21 mi | 1.29 mi | 0 / 0 |
The strongest 12 of 36, by rating and then by deaths. Ratings before February 2007 are on the original Fujita scale.
Hail in Mio
The Storm Prediction Center has 31 hail reports within 10 miles of Mio since 1981, made on 23 separate days. Of these, 11 were 1 inch across or larger, and none reached 2 inches. The largest size, 1.75 inches (golf ball size), was reported on 3 days, most recently October 18, 2007. The most recent report is from July 5, 2024. July has the most reports, 13.
Source: NOAA Storm Prediction Center severe weather reports, data through 2025.
Weather by month in Mio
The nearest NOAA station with 1991–2020 climate normals is Mio Wwtp, MI, in Mio at 1,037 feet. July is the warmest, with an average high of 81°F and low of 56°F; January is the coolest, at 28°F and 11°F. August is the wettest at 3.8 inches of precipitation on average and February the driest at 1.4 inches; the year adds up to 32.0 inches over 75 days with at least a tenth of an inch. Highs reach 90°F on about 9 days a year, almost all from June to August. Lows fall below freezing on about 180 nights a year. Snowfall averages 57.0 inches a year, most of it in January and December. That 32.0 inches is more than at 28 of the 131 Michigan stations used on this site (21%). Hale, 23 miles southeast, has its own station (Hale Loud Dam, MI): 32.7 inches a year, 0.7 more than here, and the same July average high, 81°F.
| Month | High °F | Low °F | Precip. in | Days ≥ 0.1" | Snow in |
|---|---|---|---|---|---|
| Jan | 28 | 11 | 1.9 | 5 | 14.4 |
| Feb | 32 | 10 | 1.4 | 4 | 12.7 |
| Mar | 42 | 18 | 1.7 | 5 | 7.7 |
| Apr | 54 | 30 | 3.2 | 7 | 3.8 |
| May | 68 | 41 | 3.5 | 7 | 0.2 |
| Jun | 77 | 51 | 3.6 | 8 | 0.0 |
| Jul | 81 | 56 | 2.9 | 6 | 0.0 |
| Aug | 79 | 54 | 3.8 | 7 | 0.0 |
| Sep | 72 | 47 | 2.9 | 7 | 0.0 |
| Oct | 58 | 36 | 3.1 | 8 | 0.2 |
| Nov | 44 | 28 | 2.3 | 5 | 3.6 |
| Dec | 33 | 18 | 1.7 | 6 | 14.4 |
| Year | 56 | 33 | 32.0 | 75 | 57.0 |
Averages for 1991–2020 at Mio Wwtp, MI (1,037 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 Mio
Since 1996, the National Weather Service has logged 25 flood, rain, thunderstorm wind and lightning events that began within 10 miles of Mio: 24 thunderstorm wind reports and 1 lightning strike. They killed 2 people and injured 2, and the NWS estimated $64,000 in property and crop damage. The strongest thunderstorm gust on record here was 62 mph, on June 18, 2015.
July 23, 2011: lightning strike 9 miles from the centre of Mio — 2 killed, 1 injured.
NWS: “A family was on a tubing outing on the Au Sable River. A thunderstorm rapidly developed, and they attempted to exit the river and find shelter.”
May 16, 2006: thunderstorm wind 2 miles from the centre of Mio — 1 injured, $10,000 damage.
NWS: “Trees downed. One tree fell on a Mio resident, who suffered a broken back.”
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
Oscoda County, which includes Mio, has been named in 8 federal disaster or emergency declarations since 1977, 3 of them major disasters (by incident: 2 biological emergencies, 2 snowstorms, 1 drought, 1 flood). The latest major disaster declaration was Severe Storms, Tornadoes, and Flooding, on June 30, 2026. FEMA's National Risk Index gives Oscoda County a Very Low rating for natural hazard risk overall; by hazard: Relatively High for lightning; Relatively Low for strong wind; Very Low for hurricanes, tornadoes, hail, inland flooding and heat waves. It models the county's expected loss from all 18 hazards it covers at $4.0 million a year, the 76th highest of 83 Michigan counties; of the hazards above, the largest share, $2.0 million (49%), 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 Mio
- Rose City, MI14 mi
- Lewiston, MI16 mi
- Hale, MI23 mi
- Atlanta, MI25 mi
- Grayling, MI26 mi
- West Branch, MI26 mi
- Saint Helen, MI26 mi
- Johannesburg, MI27 mi
- Hubbard Lake, MI27 mi
- Hillman, MI29 mi
- Roscommon, MI30 mi
- Prescott, MI31 mi
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