A total of 6 to 11 inches of rain fell over primarily eastern Mason and northwestern Lake counties during the evening hours on the 6th and continuing into the morning hours on the 7th. Three roads in Mason county had partial washouts.
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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.
The episode as NWS GRR wrote it up.
A total of 6 to 11 inches of rain fell over primarily eastern Mason and northwestern Lake counties during the evening hours on the 6th and continuing into the morning hours on the 7th. Three roads in Mason county had partial washouts. For Lake had a significant lake level rise that flooded the local boat launch.
The Grand Rapids radar (KGRR), 138 km away, was scanning. The volume nearest the first event began at 22:00 UTC.
2 flash flood. Local standard time, as filed.
slow moving thunderstorms produced very heavy rain over Mason county
slow moving thunderstorms produced very heavy rain during the evening and overnight
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Michigan in 1998Every state in 1998This day in weather historyWarnings in Michigan, August 1998
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: 5671667, 5672270.