Flash Flood — Isabella, Michigan

2010-08-11 to 2010-08-12 · near Mt Pleasant, Isabella, Michigan

Event narrative

Isabella county emergency management and law enforcement reported that several roads were flooded and washed out and that the Central Michigan Community Hospital also was partially flooded due to over 4 inches of rain that fell in just two and a half hours during the evening hours of August 11th. Extensive flooding damage occurred at Central Michigan University in Mt. Pleasant, where 39 campus buildings incurred extensive damage. The flash flood damage required repairing or replacing ceilings, floors, walls, insulation, equipment, electrical and mechanical systems and storm sewers at a cost of 3.5 million dollars.

Wider weather episode

Flash flooding occurred in downtown Mt. Pleasant from the evening hours of August 11th into the early morning hours of August 12th due to approximately four inches of rain which fell in just two and a half to three hours time. A trained spotter one mile south of downtown Mt. Pleasant reported that 4.16 inches of rain fell from 8 pm to 10:30 pm on August 11th. Flash flooding caused over three million dollars worth of damage to 39 buildings on the campus of Central Michigan University. Street flooding was reported in downtown Mt. Pleasant and the intersection of Isabella and Baseline roads was washed out. The heavy rain flooded portions of Central Michigan Community Hospital and left up to a foot of water on some roads on the east side of downtown Mt. Pleasant including at High and Bellows streets.

View location on OpenStreetMap → (43.5675, -84.7918)

Source: NOAA Storm Events Database, event_id 254690. Narrative written by the NWS forecast office that issued the report.