Flood in Wisconsin, June 18 to 30, 1996

Name: Flood in Wisconsin, June 18 to 30, 1996
Start: 1996-06-18T00:00
End: 1996-06-30T23:59
Location: Wisconsin

June 18 to 30, 1996 · NWS MKX · 1 event in 1 county or zone

Thanks to a 3-day rainfall event of 4 to 8 inches on the 16th, 17th, and 18th, across northern Rock county, the Rock River at Afton experienced moderate flooding. 53 feet above flood stage.

Where it happened

Every event with a place to put it; 1 filed by county or forecast zone are drawn at its center, in a lighter ring. 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

Open the live radar over this ground

The toll

Deaths: 0
Injuries: 0
Property damage: $1.0 million
Crop damage: $18 million
Events: 1

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 MKX wrote it up.

Thanks to a 3-day rainfall event of 4 to 8 inches on the 16th, 17th, and 18th, across northern Rock county, the Rock River at Afton experienced moderate flooding. The river at this location crested at 10.53 feet at 0630CST on the 25th, or 1.53 feet above flood stage. Widespread flooding of farm land was reported across Rock county. Erosion was a problem as well as blocked roads until water levels receded. Business and resident basement flooding was especially bad in Janesville and Edgerton. Businesses lost money.

The radar

The national radar mosaic for the moment the first event began.

Open the radar archive at this moment

Event by event

1 flood. Local standard time, as filed.

Flood, Rock

When: June 18, 12:00 AM CST to June 30, 11:59 PM CST
Where: Rock forecast zone
Property damage: $1.0 million
Crop damage: $18 million
Coordinates: 42.671, -89.072 (the zone’s center; the record gives no point)

What these are

Flood: Flooding that develops more slowly than a flash flood: rivers leaving their banks, or water standing over land for an extended time.

After NWS Directive 10-1605, the rules offices file Storm Data by.

The same day elsewhere

Every storm in Wisconsin in 1996 Every state in 1996 This day in weather history Warnings in Wisconsin, June 1996

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: 5566524.