Michigan, 1999

Hail and Damaging Winds in Michigan, June 9, 1999

June 9, 1999 · NWS DTX · 7 events in 3 counties and zones

A warm and humid summertime airmass was present across southeast Michigan. These thunderstorms produced large amounts of hail early in their lifetimes.

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

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The toll

Deaths
0
Injuries
0
Property damage
$35,000
Crop damage
None recorded
Events
7

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 summertime airmass was present across southeast Michigan. A cluster of thunderstorms tapped the available instability and became severe as they crossed Livingston, Genesee, and Lapeer Counties.These thunderstorms produced large amounts of hail early in their lifetimes. The largest hail report was of golfball sized hail from a spotter near Fenton. The thunderstorms evolved into damaging wind producers as they matured. Many large trees were downed from Grand Blanc, east to the city of Lapeer. In Atlas Township (Genesee County), a large building had part of its roof removed, and a trailer was overturned.

The radar

The Detroit radar (KDTX), 49 km away, was scanning. The volume nearest the first event began at 21:41 UTC.

Open the radar archive at this moment

Event by event

4 hail, 3 thunderstorm wind. Local standard time, as filed.

Hail, Livingston

When
June 9, 4:40 PM EST
Where
Livingston County, Fowlerville
Measured
1 in hail
Reported by
GENERAL PUBLIC
Coordinates
42.670, -84.070

Hail, Genesee

When
June 9, 5:03 PM EST to 5:09 PM EST
Where
Genesee County, Linden to 4 mi of Linden
Measured
1.25 in hail
Reported by
TRAINED SPOTTER
Coordinates
42.820, -83.850

Hail, Genesee

When
June 9, 5:34 PM EST to 5:44 PM EST
Where
Genesee County, Fenton to 4 mi of Grand Blanc
Measured
1.75 in hail
Reported by
TRAINED SPOTTER
Coordinates
42.830, -83.750

Thunderstorm Wind, Genesee

When
June 9, 5:34 PM EST
Where
Genesee County, 4 mi NW of Fenton
Measured
56 kt (64 mph)
Reported by
TRAINED SPOTTER
Coordinates
42.830, -83.750

Hail, Genesee

When
June 9, 5:37 PM EST
Where
Genesee County, Swartz Creek
Measured
0.75 in hail
Reported by
AMATEUR RADIO
Coordinates
42.950, -83.820

Thunderstorm Wind, Genesee

When
June 9, 5:52 PM EST to 6:00 PM EST
Where
Genesee County, Atlas to Davison
Measured
60 kt (69 mph)
Property damage
$30,000
Reported by
NWS EMPLOYEE(OFF DUTY)
Coordinates
42.930, -83.530

Thunderstorm Wind, Lapeer

When
June 9, 6:35 PM EST
Where
Lapeer County, 1 mi E of Lapeer
Measured
55 kt (63 mph)
Property damage
$5,000
Reported by
NWS EMPLOYEE(OFF DUTY)
Coordinates
43.050, -83.300

What these are

Hail
Hail three-quarters of an inch or larger, or smaller hail that caused damage, filed with the largest stone measured.
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

More

Every storm in Michigan in 1999Every state in 1999This day in weather historyWarnings in Michigan, June 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: 5706237, 5706239, 5706241, 5706242, 5706240, 5706243, 5706238.