Portions of southwestern lower Michigan were affected by strong to severe thunderstorms during the afternoon and early evening hours of July 15th. A few isolated storms began to develop between 1 and 2 pm in a line from near Grand Rapids to Big Rapids. These storms expanded into a more solid line of storms as it reached a Clare to Ionia county line. The storms were responsible for injuries to four teens that were struck by lightning near Vestaburg in Montcalm county. The storms increased in intensity as they reached Gratiot county, and produced some wind damage in the form of trees and powerlines down in the vicinity of Alma.

Lightning in MONTCALM, MICHIGAN
From 15-JUL-10 12:48:00 to 15-JUL-10 12:48:00 (EST-5)
Location: VESTABURG
Reported by: Broadcast Media

Four teenagers were struck by lightning near Vestaburg at a baseball diamond.  There were no fatalities.

Thunderstorm Wind in GRATIOT, MICHIGAN
From 15-JUL-10 13:52:00 to 15-JUL-10 14:00:00 (EST-5)
Location: ALMA
Magnitude: 52.00 EG
Reported by: Law Enforcement

The 911 dispatch center in Alma reported that several trees and power lines were blown down across downtown Alma.

Flash Flood in CALHOUN, MICHIGAN
From 15-JUL-10 18:40:00 to 15-JUL-10 19:30:00 (EST-5)
Location: MARSHALL
Flood cause: Heavy Rain
Property damage: 50.00K
Crop damage: 10.00K
Reported by: County Official

A Calhoun county official reported that several roads were flooded particularly near Marshall where water approached some area homes before receding.  A co-op observer reported total rainfall of 3.5 inches on old route 27 between Marshall and Tekonsha.

Thunderstorm Wind in JACKSON, MICHIGAN
From 15-JUL-10 16:10:00 to 15-JUL-10 16:25:00 (EST-5)
Location: RIVES JCT
Magnitude: 52.00 EG
Reported by: Trained Spotter

Trained spotters reported that tree limbs and power lines were blown down four miles south southwest of Leslie.  Power lines were also blown down across Kennedy road in Henrietta township.

Thunderstorm Wind in CALHOUN, MICHIGAN
From 15-JUL-10 14:56:00 to 15-JUL-10 15:00:00 (EST-5)
Location: BATTLE CREEK
Magnitude: 54.00 MG
Reported by: ASOS

A severe thunderstorm produced a measured wind gust of 62 mph at the Battle Creek airport.  A county official in Battle Creek reported that the top portion of a 35 inch in diameter oak tree was knocked over.

Thunderstorm Wind in INGHAM, MICHIGAN
From 15-JUL-10 15:25:00 to 15-JUL-10 15:25:00 (EST-5)
Location: PACKARD
Magnitude: 52.00 EG
Reported by: County Official

An Ingham county official four miles south of Lansing reported that two trees were blown down near the intersection of Pennsylvania avenue and Jolly road.

Thunderstorm Wind in CALHOUN, MICHIGAN
From 15-JUL-10 15:28:00 to 15-JUL-10 15:45:00 (EST-5)
Location: BROWNLEE PARK
Magnitude: 52.00 EG
Property damage: 50.00K
Reported by: Trained Spotter

Numerous trees and power lines were blown down three miles east of Battle Creek by what a trained spotter estimated to be peak wind gusts up to 60 mph.  A Calhoun county official reported that a tree and power lines were blown down onto a house three miles east northeast of Battle Creek. Several trees and power lines were also blown down further east of downtown Battle Creek.