Thunderstorm Wind, Lake
- When
- July 23, 10:45 AM EST
- Where
- Lake County, Irons
- Measured
- 53 kt (61 mph)
- Property damage
- $10,000
- Reported by
- NWS STORM SURVEY
- Coordinates
- 44.130, -85.920
Trees were downed in Irons.
Tornadoes and Hail in Michigan, July 23, 1999
A trough of low pressure triggered the development of numerous rounds of strong to severe thunderstorms across southwest Michigan through the day. Many of the thunderstorms produced gusty winds of 50 to 60 mph that downed numerous trees and power lines.
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
- $117,000
- Crop damage
- None recorded
- Events
- 14
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.
What happened
The episode as NWS GRR wrote it up.
A trough of low pressure triggered the development of numerous rounds of strong to severe thunderstorms across southwest Michigan through the day. Many of the thunderstorms produced gusty winds of 50 to 60 mph that downed numerous trees and power lines. There were also 2 reports of brief tornado touchdowns, both of which were very weak. One tornado touched down in a rurar area of Mt. Pleasant in Isabella county, but produced no damage. Another brief touchdown was reported during the early evening hours in Tustin, in Osceola county. It was also very weak, but did produce minor damage to one home. There was also one report of 3/4" hail in Eaton Rapids, in Eaton county.
The radar
The NCL Michigan radar (KAPX), 128 km away, was scanning. The volume nearest the first event began at 15:44 UTC.
Event by event
11 thunderstorm wind, 2 tornado, 1 hail. Local standard time, as filed.
Thunderstorm Wind, Mecosta
- When
- July 23, 11:40 AM EST
- Where
- Mecosta County, Rustford
- Measured
- 53 kt (61 mph)
- Property damage
- $10,000
- Reported by
- NWS STORM SURVEY
- Coordinates
- 43.500, -85.330
Trees were downed in Rustford.
Tornado, Isabella
- When
- July 23, 12:13 PM EST
- Where
- Isabella County, Mt Pleasant
- Rating
- F0
- Path length
- 0.1 mi
- Path width
- 10 yd
- Property damage
- $10,000
- Reported by
- NWS STORM SURVEY
- Coordinates
- 43.600, -84.770
Several people including one trained spotter reported what they believed to be a very brief tornado touchdown of 10 to 15 seconds. It occurred over a wooded rural area, so there was no extensive damage or any injuries.
Thunderstorm Wind, Isabella
- When
- July 23, 12:15 PM EST
- Where
- Isabella County, Rosebush
- Measured
- 53 kt (61 mph)
- Property damage
- $10,000
- Reported by
- NWS STORM SURVEY
- Coordinates
- 43.700, -84.770
Trees were downed in Rustford.
Thunderstorm Wind, Gratiot
- When
- July 23, 1:15 PM EST
- Where
- Gratiot County, Ithaca
- Measured
- 53 kt (61 mph)
- Property damage
- $10,000
- Reported by
- NWS STORM SURVEY
- Coordinates
- 43.280, -84.620
Power lines and trees were downed in Ithaca.
Thunderstorm Wind, Jackson
- When
- July 23, 1:38 PM EST
- Where
- Jackson County, Tompkins Center
- Measured
- 53 kt (61 mph)
- Property damage
- $10,000
- Reported by
- NWS STORM SURVEY
- Coordinates
- 42.370, -84.530
Several trees were downed in Topkins.
Hail, Eaton
- When
- July 23, 1:45 PM EST
- Where
- Eaton County, Eaton Rapids
- Measured
- 0.75 in hail
- Reported by
- NWS STORM SURVEY
- Coordinates
- 42.520, -84.650
3/4" diameter hail was observed in Eaton Rapids.
Thunderstorm Wind, Ingham
- When
- July 23, 2:25 PM EST to 2:27 PM EST
- Where
- Ingham County, Dansville to Stockbridge
- Measured
- 53 kt (61 mph)
- Property damage
- $10,000
- Reported by
- NWS STORM SURVEY
- Coordinates
- 42.550, -84.300
Numerous trees were downed in Dansville, Webberville, and Stockbridge.
Thunderstorm Wind, Mecosta
- When
- July 23, 5:22 PM EST
- Where
- Mecosta County, Morley
- Measured
- 53 kt (61 mph)
- Property damage
- $10,000
- Reported by
- NWS STORM SURVEY
- Coordinates
- 43.480, -85.450
Several trees were downed in Morley.
Thunderstorm Wind, Montcalm
- When
- July 23, 5:50 PM EST
- Where
- Montcalm County, Lakeview
- Measured
- 53 kt (61 mph)
- Property damage
- $15,000
- Reported by
- NWS STORM SURVEY
- Coordinates
- 43.430, -85.280
A tree was downed and fell on a vehicle in Lakeview.
Tornado, Osceola
- When
- July 23, 6:13 PM EST to 6:28 PM EST
- Where
- Osceola County, Tustin
- Rating
- F0
- Path length
- 1 mi
- Path width
- 10 yd
- Property damage
- $10,000
- Reported by
- NWS STORM SURVEY
- Coordinates
- 44.100, -85.450
A weak tornado made a brief touchdown in Tustin at 20 Mile Road and the Mackinaw Trail, causing minor damage to one home.
Thunderstorm Wind, Eaton
- When
- July 23, 10:00 PM EST to 10:15 PM EST
- Where
- Eaton County, Vermontville to Charlotte
- Measured
- 53 kt (61 mph)
- Property damage
- $10,000
- Reported by
- NWS STORM SURVEY
- Coordinates
- 42.630, -85.020
Several power lines and trees were downed in Vermontville.
Thunderstorm Wind, Calhoun
- When
- July 23, 10:45 PM EST
- Where
- Calhoun County, Albion
- Measured
- 53 kt (61 mph)
- Property damage
- $1,000
- Reported by
- NWS STORM SURVEY
- Coordinates
- 42.250, -84.750
A tree was downed just north of Albion.
Thunderstorm Wind, Jackson
- When
- July 23, 11:10 PM EST
- Where
- Jackson County, Jackson
- Property damage
- $1,000
- Reported by
- NWS STORM SURVEY
- Coordinates
- 42.230, -84.400
A large tree was downed on Comdon Road.
What these are
- 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.
- 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.
- 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
- Heat in Missouri, July 23 to 31, 1999
- Heat in Pennsylvania, July 23 to 31, 1999
- Heat in Wisconsin, July 23 to 31, 1999
- Hail and Damaging Winds in Michigan, July 23, 1999
- Heat in Minnesota, July 23 to 25, 1999
- Heat in Maryland, July 23 to 31, 1999
- Heat in South Carolina, July 23, 1999
- Heat in Arkansas, July 23, 1999
- Heat in Delaware, July 23 to 31, 1999
- Hail and Damaging Winds in Wisconsin, July 23, 1999
- Hail and Damaging Winds in Ohio, July 23, 1999
- Lightning Strike in Maine, July 23, 1999
More
Every storm in Michigan in 1999Every state in 1999This day in weather historyThe tornado archive for Michigan, 1999Warnings in Michigan, July 1999
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: 5708635, 5708636, 5708639, 5708637, 5708638, 5708640, 5708641, 5708642, 5708643, 5708644, 5708645, 5708646, 5708647, 5708648.