Tornado, Ottawa
- When
- July 12, 3:00 AM CST
- Where
- Ottawa County
- Rating
- F2
- Path length
- 2 mi
- Path width
- 33 yd
- Property damage
- $25,000
- Coordinates
- 43.070, -85.950
Tornado and Hail in Michigan, July 12, 1966
7 thunderstorm wind, 2 hail, 1 tornado, as filed by the National Weather Service.
Where it happened
Every event with a place to put it. Tap one for its entry below.
- Tornadoes
- Tropical storms and surge
- Floods
- Wind
- Hail
- Winter weather
- Heat and drought
- Cold
- Fire, smoke and dust
- Marine and coastal
- Other
The toll
- Deaths
- 0
- Injuries
- 0
- Property damage
- $25,000
- Crop damage
- None recorded
- Events
- 10
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
Event by event
7 thunderstorm wind, 2 hail, 1 tornado. Local standard time, as filed.
Thunderstorm Wind, Saginaw
- When
- July 12, 8:55 AM CST
- Where
- Saginaw County
- Measured
- 55 kt (63 mph)
- Coordinates
- 43.500, -84.080
Thunderstorm Wind, Oakland
- When
- July 12, 9:25 AM CST
- Where
- Oakland County
- Measured
- 50 kt (58 mph)
- Coordinates
- 42.580, -83.280
Thunderstorm Wind, Macomb
- When
- July 12, 9:40 AM CST
- Where
- Macomb County
- Measured
- 50 kt (58 mph)
- Coordinates
- 42.580, -82.900
Hail, Wayne
- When
- July 12, 10:30 AM CST
- Where
- Wayne County
- Measured
- 1.75 in hail
- Coordinates
- 42.200, -83.500
Hail, Wayne
- When
- July 12, 10:30 AM CST
- Where
- Wayne County
- Measured
- 1.75 in hail
- Coordinates
- 42.080, -83.400
Thunderstorm Wind, Washtenaw
- When
- July 12, 10:30 AM CST
- Where
- Washtenaw County
- Coordinates
- 42.280, -83.680
Thunderstorm Wind, Wayne
- When
- July 12, 10:47 AM CST
- Where
- Wayne County
- Measured
- 54 kt (62 mph)
- Coordinates
- 42.380, -83.000
Thunderstorm Wind, Bay
- When
- July 12, 10:50 AM CST
- Where
- Bay County
- Coordinates
- 43.580, -84.080
Thunderstorm Wind, Monroe
- When
- July 12, 10:50 AM CST
- Where
- Monroe County
- Coordinates
- 41.880, -83.400
What these are
- Tornado
- A violently rotating column of air in contact with the ground and extending from a thunderstorm, filed with its path, width and Fujita or Enhanced Fujita rating from the damage survey.
- Thunderstorm Wind
- Winds from a thunderstorm of 50 knots (58 mph) or more, or lower winds that caused damage or casualties. Measured gusts are marked MG, estimated EG.
- Hail
- Hail three-quarters of an inch or larger, or smaller hail that caused damage, filed with the largest stone measured.
After NWS Directive 10-1605, the rules offices file Storm Data by.
The same day elsewhere
- Tornado and Damaging Winds in North Dakota, July 12, 1966
- Hail and Damaging Winds in Ohio, July 12, 1966
- Hail and Damaging Winds in Vermont, July 12, 1966
- Damaging Winds in Wisconsin, July 12, 1966
- Damaging Winds in South Carolina, July 12, 1966
- Damaging Wind in Minnesota, July 12, 1966
- Damaging Wind in Massachusetts, July 12, 1966
- Damaging Wind in Indiana, July 12, 1966
- Tornado in South Dakota, July 12, 1966
- Hail in Idaho, July 12, 1966
More
Every storm in Michigan in 1966Every state in 1966This day in weather historyThe tornado archive for Michigan, 1966
Sources
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 10040977, 10040978, 10040979, 10040980, 10040981, 10040982, 10040983, 10040984, 10040985, 10040986.