Michigan Flooding

September 10 to 12, 1986 · Flooding · $1.1 billion in 2024 dollars

One of the flooding disasters on NOAA’s billion-dollar list: $1.1 billion in losses at 2024 prices ($400 million at the time) and 10 deaths.

The toll

Losses, 2024 dollars: $1.1 billion
Losses at the time: $400 million
Deaths: 10

The losses and deaths are NCEI’s, counting everything the disaster did. The episodes below are only what the Weather Service filed in its Storm Events record, which counts damage differently and often not at all, so the two never add up and are shown apart.

Every billion-dollar disaster Every storm of 1986 Tornadoes in 1986

Sources

NOAA NCEI, U.S. Billion-Dollar Weather and Climate Disasters (2025), https://doi.org/10.25921/stkw-7w73, and the Storm Events Database for the episodes.