Thunderstorm Wind, Lapeer
- When
- July 17, 11:45 AM EST
- Where
- Lapeer County, Lapeer
- Measured
- 52 kt (60 mph)
- Property damage
- $5,000
- Reported by
- LAW ENFORCEMENT
- Coordinates
- 43.050, -83.320
Damaging Winds in Michigan, July 17, 1999
A warm and humid airmass covered southeast Michigan, with high temperatures around 90 and dew points around 70. Numerous thunderstorms developed in the unstable atmosphere, beginning around noon EDT.
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
- $27,000
- Crop damage
- None recorded
- Events
- 3
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 DTX wrote it up.
A warm and humid airmass covered southeast Michigan, with high temperatures around 90 and dew points around 70. Numerous thunderstorms developed in the unstable atmosphere, beginning around noon EDT. These were 'pulse' type thunderstorms, in that they had a very short life cycle. A few storms, at their most intense, briefly reached severe levels. Several large trees were downed in Lapeer. The same occurred southwest of Caro, and in addition a small shed was blown over. On Harsens Island, falling trees damaged two roofs and two boats.
The radar
The national radar mosaic for the moment the first event began.
Event by event
3 thunderstorm wind. Local standard time, as filed.
Thunderstorm Wind, Tuscola
- When
- July 17, 2:00 PM EST
- Where
- Tuscola County, 6 mi SW of Caro
- Measured
- 52 kt (60 mph)
- Property damage
- $8,000
- Reported by
- LAW ENFORCEMENT
- Coordinates
- 43.420, -83.480
Thunderstorm Wind, St. Clair
- When
- July 17, 3:50 PM EST
- Where
- St. Clair County, Harsens Is
- Measured
- 55 kt (63 mph)
- Property damage
- $14,000
- Reported by
- LAW ENFORCEMENT
- Coordinates
- 42.770, -82.700
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.
After NWS Directive 10-1605, the rules offices file Storm Data by.
The same day elsewhere
- Lightning Strike in Montana, July 17, 1999
- Damaging Winds in New York, July 17, 1999
- Lightning Strike in Florida, July 17, 1999
- Damaging Wind in Florida, July 17, 1999
- Flash Flood and Damaging Winds in Ohio, July 17, 1999
- Flash Flooding in Colorado, July 17 to 18, 1999
- Flash Flooding in Alaska, July 17 to 21, 1999
- Lightning Strike in Washington, July 17, 1999
- Hail and Damaging Winds in Georgia, July 17, 1999
- Damaging Winds in Mississippi, July 17, 1999
- Flash Flooding in Kansas, July 17, 1999
- Waterspout in Texas, July 17, 1999
More
Every storm in Michigan in 1999Every state in 1999This day in weather historyWarnings 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: 5708069, 5708070, 5708071.