Miami County Natural Disasters and Weather Extremes
Hot Ohio Rankings
The chance of earthquake damage in Miami County is about the same as Ohio average and is much lower than the national average. The risk of tornado damage in Miami County is higher than Ohio average and is higher than the national average.
Earthquake Index, #18
| Miami County | 0.13 |
| Ohio | 0.16 |
| U.S. | 1.81 |
The earthquake index value is calculated based on historical earthquake events data using USA.com algorithms. It is an indicator of the earthquake level in a region. A higher earthquake index value means a higher chance of an earthquake.
Volcano Index, #1
| Miami County | 0.0000 |
| Ohio | 0.0000 |
| U.S. | 0.0023 |
The volcano index value is calculated based on the currently known volcanoes using USA.com algorithms. It is an indicator of the possibility of a region being affected by a possible volcano eruption. A higher volcano index value means a higher chance of being affected.
Tornado Index, #26
| Miami County | 175.85 |
| Ohio | 156.02 |
| U.S. | 136.45 |
The tornado index value is calculated based on historical tornado events data using USA.com algorithms. It is an indicator of the tornado level in a region. A higher tornado index value means a higher chance of tornado events.
Other Weather Extremes Events
A total of 15,496 other weather extremes events within 50 miles of Miami County were recorded from 1950 to 2010. The following is a break down of these events:
| Type | Count | Type | Count | Type | Count | Type | Count | Type | Count |
| Avalanche: | 0 | Blizzard: | 8 | Cold: | 67 | Dense Fog: | 34 | Drought: | 36 |
| Dust Storm: | 0 | Flood: | 1,982 | Hail: | 3,691 | Heat: | 59 | Heavy Snow: | 142 |
| High Surf: | 0 | Hurricane: | 0 | Ice Storm: | 61 | Landslide: | 0 | Strong Wind: | 257 |
| Thunderstorm Winds: | 8,575 | Tropical Storm: | 0 | Wildfire: | 1 | Winter Storm: | 186 | Winter Weather: | 54 |
| Other: | 343 | ||||||||
Volcanos Nearby
No volcano is found in or near Miami County.
Historical Earthquake Events
A total of 1 historical earthquake event that had a recorded magnitude of 3.5 or above found in or near Miami County.
| Distance (miles) | Date | Magnitude | Depth (km) | Latitude | Longitude |
| 24.0 | 1937-03-09 | 5.5 | N/A | 40.4 | -84.2 |
Historical Tornado Events
A total of 64 historical tornado events that had recorded magnitude of 2 or above found in or near Miami County.
| Distance (miles) | Date | Magnitude | Start Lat/Log | End Lat/Log | Length | Width | Fatalities | Injuries | Property Damage | Crop Damage | Affected County |
| 9.0 | 1961-06-08 | 2 | 40°11'N / 84°15'W | 0 | 0 | 250K | 0 | Miami | |||
| 10.7 | 1959-05-22 | 2 | 39°54'N / 84°12'W | 0 | 0 | 3K | 0 | Miami | |||
| 14.9 | 1961-07-28 | 3 | 40°16'N / 84°11'W | 0.50 Mile | 200 Yards | 0 | 22 | 250K | 0 | Shelby | |
| 17.3 | 1981-06-08 | 2 | 40°17'N / 84°09'W | 40°18'N / 84°06'W | 1.30 Miles | 200 Yards | 0 | 2 | 250K | 0 | Shelby |
| 17.7 | 1980-04-08 | 2 | 39°59'N / 84°33'W | 1.00 Mile | 100 Yards | 0 | 0 | 2.5M | 0 | Darke | |
| 20.3 | 1992-11-22 | 3 | 39°56'N / 84°38'W | 39°59'N / 84°33'W | 8.00 Miles | 500 Yards | 0 | 21 | 25.0M | 0 | Darke |
| 21.7 | 1965-04-11 | 4 | 40°21'N / 84°23'W | 40°23'N / 84°02'W | 18.40 Miles | 300 Yards | 3 | 50 | 2.5M | 0 | Shelby |
| 23.0 | 1961-07-28 | 3 | 40°12'N / 84°48'W | 40°14'N / 84°25'W | 20.20 Miles | 200 Yards | 0 | 2 | 250K | 0 | Darke |
| 23.6 | 1963-05-27 | 2 | 40°07'N / 84°40'W | 1.00 Mile | 33 Yards | 0 | 0 | 25K | 0 | Darke | |
| 23.6 | 1958-06-13 | 2 | 40°06'N / 83°50'W | 40°09'N / 83°45'W | 5.10 Miles | 33 Yards | 0 | 0 | 250K | 0 | Champaign |
| 24.5 | 1955-03-11 | 2 | 40°12'N / 84°48'W | 40°12'N / 84°30'W | 15.60 Miles | 500 Yards | 0 | 2 | 250K | 0 | Randolph |
| 25.1 | 1955-11-15 | 3 | 40°06'N / 84°38'W | 40°06'N / 84°46'W | 14.40 Miles | 400 Yards | 0 | 7 | 25K | 0 | Randolph |
| 25.1 | 1955-11-15 | 3 | 40°06'N / 84°46'W | 40°06'N / 84°38'W | 6.60 Miles | 300 Yards | 0 | 1 | 2.5M | 0 | Darke |
| 25.9 | 1963-04-19 | 2 | 39°49'N / 83°51'W | 0 | 0 | 250K | 0 | Greene | |||
| 26.2 | 1969-05-08 | 3 | 39°40'N / 84°08'W | 39°42'N / 84°06'W | 1.90 Miles | 150 Yards | 0 | 25 | 2.5M | 0 | Montgomery |
| 27.5 | 1973-05-10 | 3 | 40°14'N / 83°50'W | 40°01'N / 83°36'W | 19.20 Miles | 300 Yards | 0 | 0 | 3K | 0 | Champaign |
| 28.0 | 1992-11-22 | 3 | 39°47'N / 84°45'W | 39°56'N / 84°38'W | 12.00 Miles | 500 Yards | 0 | 0 | 25.0M | 0 | Preble |
| 28.1 | 1966-10-09 | 2 | 39°42'N / 84°02'W | 39°41'N / 83°56'W | 4.90 Miles | 100 Yards | 0 | 3 | 250K | 0 | Greene |
| 28.3 | 1970-05-14 | 2 | 40°17'N / 83°47'W | 3.00 Miles | 350 Yards | 0 | 0 | 250K | 0 | Logan | |
| 29.3 | 1989-04-25 | 2 | 39°41'N / 83°56'W | 39°45'N / 83°51'W | 5.00 Miles | 123 Yards | 0 | 16 | 2.5M | 0 | Greene |
| 29.5 | 2000-09-20 | 4 | 39°39'N / 83°59'W | 39°44'N / 83°53'W | 9.00 Miles | 500 Yards | 1 | 100 | 15.0M | 0 | Greene |
| Brief Description: A violent tornado that moved at 65 mph hit the town of Xenia for the second time in 26 years damaging some of the same areas that were hit in 1974. Along the path of the tornado, around 250 homes were either damaged or destroyed, over 40 businesses were damaged or destroyed including the local Wal Mart, Kroger, and Tire Discounters, and 6 churches were damaged. A strip mall was nearly destroyed, cars were thrown from the Highway 35 bypass into ditches, 4 semi-trailers were thrown up to 400 yards, and most of the buildings were damaged or destroyed at the Greene county fairgrounds. In Sugarcreek Township, which is to the southwest of Xenia, an additional 14 houses and 3 barns were damaged and some crops were destroyed on a narrow path. Over 10,000 residents were without power for at least 1 day. M63VE | |||||||||||
| 30.0 | 1974-04-03 | 5 | 39°38'N / 84°03'W | 39°47'N / 83°43'W | 20.40 Miles | 533 Yards | 36 | 1150 | 250.0M | 0 | Greene |
| 30.8 | 1953-06-13 | 2 | 39°44'N / 84°38'W | 0 | 0 | 25K | 0 | Preble | |||
| 31.7 | 1956-02-25 | 2 | 39°44'N / 83°48'W | 0.30 Mile | 30 Yards | 0 | 0 | 250K | 0 | Greene | |
| 32.1 | 1961-07-28 | 3 | 40°11'N / 84°49'W | 40°12'N / 84°48'W | 0 | 0 | 3K | 0 | Randolph | ||
| 32.9 | 1961-04-25 | 4 | 39°45'N / 84°48'W | 39°45'N / 84°37'W | 9.50 Miles | 77 Yards | 0 | 0 | 2.5M | 0 | Preble |
| 33.3 | 1974-04-03 | 5 | 39°47'N / 83°43'W | 39°55'N / 83°36'W | 10.90 Miles | 533 Yards | 0 | 0 | 2.5M | 0 | Clark |
| 33.5 | 1971-05-24 | 3 | 40°29'N / 83°56'W | 1.00 Mile | 150 Yards | 0 | 0 | 25K | 0 | Logan | |
| 33.6 | 1997-07-02 | 2 | 39°41'N / 83°49'W | 39°41'N / 83°49'W | 0.20 Mile | 300 Yards | 0 | 0 | 50K | 0 | Greene |
| Brief Description: A brief tornado developed in the apex of a bow echo that moved across the county. A house was blown off its foundation and moved 35 feet away. A low pressure system with an unusually strong mid and upper level jet streak was moving across the Great Lakes with an associated cold front moving across the upper Ohio valley. Thunderstorms developed across Indiana and moved into West-Central Ohio around mid-afternoon with a distinct bow echo causing wind damage from near to Lima to southeast of Columbus. On the southern edge of the first line of storms, a supercell developed over Central Indiana. This storm evolved into a bow echo and swept across the Dayton metro area causing extensive wind damage and a brief tornado in Greene county. Another supercell developed near Cincinnati and moved southeastward along the Ohio River. This storm produced the F3 tornado in Clermont county. | |||||||||||
| 33.7 | 1963-03-19 | 2 | 40°03'N / 84°52'W | 2.50 Miles | 300 Yards | 0 | 0 | 250K | 0 | Randolph | |
| 34.7 | 1965-11-16 | 2 | 40°12'N / 83°36'W | 0.20 Mile | 33 Yards | 0 | 4 | 25K | 0 | Champaign | |
| 35.9 | 1973-05-10 | 3 | 40°01'N / 83°36'W | 39°55'N / 83°31'W | 8.00 Miles | 300 Yards | 0 | 4 | 3K | 0 | Clark |
| 36.8 | 1986-03-10 | 3 | 40°02'N / 84°59'W | 40°06'N / 84°52'W | 7.60 Miles | 440 Yards | 0 | 0 | 25.0M | 0 | Randolph |
| 36.8 | 1980-04-08 | 2 | 39°32'N / 84°23'W | 2.00 Miles | 100 Yards | 0 | 10 | 2.5M | 0 | Butler | |
| 38.1 | 1969-05-10 | 3 | 39°32'N / 84°00'W | 39°33'N / 83°55'W | 4.10 Miles | 400 Yards | 0 | 0 | 0K | 0 | Clinton |
| 38.2 | 1990-09-14 | 2 | 39°33'N / 84°03'W | 39°30'N / 83°59'W | 5.50 Miles | 200 Yards | 0 | 4 | 2.5M | 0 | Warren |
| 38.5 | 1992-11-22 | 2 | 39°43'N / 84°50'W | 39°44'N / 84°48'W | 1.00 Mile | 200 Yards | 0 | 0 | 2.5M | 0 | Wayne |
| 39.1 | 1990-05-04 | 2 | 39°30'N / 84°23'W | 0.20 Mile | 150 Yards | 1 | 5 | 250K | 0 | Butler | |
| 39.1 | 1969-05-10 | 3 | 39°33'N / 83°55'W | 39°35'N / 83°47'W | 7.20 Miles | 400 Yards | 0 | 6 | 0K | 0 | Greene |
| 39.3 | 1961-04-25 | 4 | 39°44'N / 84°54'W | 39°45'N / 84°48'W | 5.10 Miles | 550 Yards | 0 | 3 | 2.5M | 0 | Wayne |
| 39.6 | 1967-05-28 | 2 | 39°54'N / 84°57'W | 0.50 Mile | 33 Yards | 0 | 0 | 25K | 0 | Wayne | |
| 39.8 | 1975-04-02 | 2 | 39°29'N / 84°07'W | 1.00 Mile | 50 Yards | 0 | 3 | 2.5M | 0 | Warren | |
| 40.1 | 1969-05-10 | 3 | 39°25'N / 84°20'W | 39°32'N / 84°00'W | 19.40 Miles | 400 Yards | 0 | 10 | 250K | 0 | Warren |
| 40.3 | 2010-10-26 | 2 | 40°37'N / 84°10'W | 40°39'N / 84°07'W | 3.00 Miles | 110 Yards | 0 | 0 | 230K | 0K | Auglaize |
| Brief Description: EVENT NARRATIVE: The tornado touched down in Auglaize County at 1059 EST and continued into Allen County at 1102 EST before lifting at 1103 EST. The path width was 110 yards in Auglaize County and 20 yards in Allen County. The tornado traveled for 2.53 miles in Auglaize County and then 1.39 miles in Allen County. The damage was consistent with winds around 110 miles per hour in Auglaize County and 75 miles per hour in Allen County. The tornado was rated an EF2 in Auglaize County and an EF0 in Allen County. The tornado initially touched down southwest of Cridersville where the tornado destroyed a barn. The tornado briefly lifted and then touched down in Cridersville. Damage in Cridersville included roofs blown off of houses, a house shifted off of the foundation, a house with major structural damage, and a half collapsed brick gymnasium. Objects were also impaled into the side of buildings. The tornado again briefly lifted and then touched down again in Allen County near McClain Road, north of Hume Road. At this location a quarter of a metal roof was pulled off of a metal barn. Damage estimates in Auglaize County are 230,000 dollars and in Allen County damage estimates are 8,000 dollars. EPISODE NARRATIVE: A historically deep low pressure system sent a very strong cold front into a marginally unstable, but very sheared environment. A line of storms formed west of the area overnight and moved into the region during the peak heating hours of the day. Severe wind gusts occurred along the entire line with multiple tornadoes occurring around the region as well. | |||||||||||
| 41.1 | 1956-04-03 | 2 | 39°44'N / 84°53'W | 0 | 0 | 250K | 0 | Wayne | |||
| 41.2 | 2002-11-10 | 3 | 40°21'N / 83°33'W | 40°21'N / 83°33'W | 2.00 Miles | 300 Yards | 0 | 0 | 30K | 0 | Logan |
| Brief Description: The tornado touched down across the extreme eastern part of the county and moved northeast, continuing into Union County. Two semi trailers and a shed roof were damaged. | |||||||||||
| 41.7 | 1974-04-03 | 2 | 39°23'N / 84°14'W | 39°31'N / 84°10'W | 9.80 Miles | 177 Yards | 0 | 9 | 2.5M | 0 | Warren |
| 42.7 | 1961-09-24 | 3 | 40°11'N / 85°13'W | 40°12'N / 84°49'W | 20.90 Miles | 33 Yards | 0 | 0 | 250K | 0 | Randolph |
| 43.7 | 1974-04-03 | 2 | 39°50'N / 83°34'W | 39°56'N / 83°18'W | 15.70 Miles | 180 Yards | 0 | 0 | 250K | 0 | Clark |
| 45.2 | 1992-11-22 | 2 | 39°36'N / 84°59'W | 39°43'N / 84°50'W | 11.00 Miles | 200 Yards | 0 | 0 | 2.5M | 0 | Union |
| 45.6 | 1990-09-14 | 2 | 39°30'N / 83°59'W | 39°29'N / 83°34'W | 22.50 Miles | 200 Yards | 0 | 2 | 2.5M | 0 | Clinton |
| 45.7 | 1986-03-10 | 2 | 39°27'N / 83°50'W | 39°31'N / 83°45'W | 6.00 Miles | 73 Yards | 0 | 10 | 2.5M | 0 | Clinton |
| 45.7 | 1973-05-10 | 3 | 39°55'N / 83°31'W | 39°55'N / 83°15'W | 14.10 Miles | 300 Yards | 0 | 0 | 3K | 0 | Madison |
| 45.8 | 1955-03-11 | 2 | 40°18'N / 85°02'W | 0 | 0 | 25K | 0 | Randolph | |||
| 45.9 | 2002-11-10 | 3 | 40°23'N / 83°32'W | 40°26'N / 83°27'W | 7.00 Miles | 300 Yards | 0 | 2 | 500K | 0 | Union |
| Brief Description: The tornado moved into the northwest part of the county from Logan County, tracking northeast across rural areas. Nine homes were damaged, four of which were completely destroyed. Half a dozen barn and sheds were destroyed. A 400-foot metal hi-tension cellular tower was toppled and destroyed and numerous cars were totalled. The worst damage occurred to a modular home along Newton-Perkins Road. Two individuals in the home were severely injured. | |||||||||||
| 46.4 | 1974-04-03 | 4 | 40°18'N / 85°03'W | 40°19'N / 85°02'W | 0 | 0 | 0K | 0 | Jay | ||
| 47.4 | 1999-04-09 | 2 | 39°21'N / 84°11'W | 39°23'N / 84°16'W | 1.50 Miles | 100 Yards | 0 | 0 | 2.5M | 0 | Warren |
| Brief Description: A tornado touched down in eastern Hamilton Township causing heavy damage to a farmstead. The roof of the house and an extension to a barn were destroyed. Further down the path, a house was skewed from its foundation. | |||||||||||
| 47.7 | 1974-04-03 | 4 | 39°18'N / 84°23'W | 39°26'N / 84°17'W | 10.40 Miles | 350 Yards | 0 | 0 | 250K | 0 | Warren |
| 47.8 | 1967-02-15 | 2 | 40°03'N / 85°08'W | 0.50 Mile | 10 Yards | 0 | 0 | 3K | 0 | Randolph | |
| 49.3 | 1986-03-10 | 2 | 39°21'N / 84°23'W | 1.00 Mile | 200 Yards | 0 | 0 | 2.5M | 0 | Butler | |
| 49.3 | 1974-04-03 | 4 | 40°06'N / 85°14'W | 40°18'N / 85°03'W | 16.70 Miles | 1400 Yards | 1 | 12 | 0K | 0 | Randolph |
| 49.4 | 1990-06-02 | 4 | 39°20'N / 84°19'W | 39°21'N / 84°20'W | 2.00 Miles | 1350 Yards | 0 | 0 | 25.0M | 0 | Warren |
| 49.6 | 1955-03-11 | 2 | 39°40'N / 85°02'W | 39°40'N / 85°00'W | 1.30 Miles | 847 Yards | 0 | 0 | 250K | 0 | Union |
| 49.9 | 1969-05-10 | 3 | 39°20'N / 84°46'W | 39°25'N / 84°20'W | 23.80 Miles | 400 Yards | 0 | 9 | 2.5M | 0 | Butler |
* The information on this page is based on the global volcano database, the U.S. earthquake database of 1638-1985, and the U.S. Tornado and Weather Extremes database of 1950-2010.