Wisconsin, 1998

Flash Flood in Wisconsin, August 5, 1998

August 5, 1998 · NWS MKX · 1 event in 1 county or zone

, dumping 4 to 6 inches of rain between 0400CST and 0900CST in Big Bend. A portion of Highway 164 was washed away by the flood waters, while a couple other roads had shoulder gravel washouts.

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

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The toll

Deaths
0
Injuries
0
Property damage
$40,000
Crop damage
None recorded
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.

A series of thunderstorms, slowly moving northeast at 10 mph, trained through the Big Bend area of southeast Waukesha Co., dumping 4 to 6 inches of rain between 0400CST and 0900CST in Big Bend. A portion of Highway 164 was washed away by the flood waters, while a couple other roads had shoulder gravel washouts. A women was rescued from her stalled car in 4 foot deep waters. Likewise, an elderly man was rescued from his stalled car. Just south of the village of Big Bend, a drainage ditch and feeder creek into the Fox River flooded and washed sway a pedestrian bridge at the Fox River Inn on Highway 164. There was also significant soil erosion at that location. The synoptic reasons for this flooding can be found in the August 4th entry for flash flooding in Columbia Co.

The radar

The Milwaukee radar (KMKX), 21 km away, was scanning. The volume nearest the first event began at 13:02 UTC.

Open the radar archive at this moment

Event by event

1 flash flood. Local standard time, as filed.

Flash Flood, Waukesha

When
August 5, 7:00 AM CST to 10:00 AM CST
Where
Waukesha County, Big Bend
Property damage
$40,000
Reported by
LAW ENFORCEMENT
Coordinates
43.018, -88.304 (the zone’s center; the record gives no point)

What these are

Flash Flood
Flooding that begins within six hours of the rain that causes it, or of a dam or levee failure or ice jam release, often with deadly speed.

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

The same day elsewhere

More

Every storm in Wisconsin in 1998Every state in 1998This day in weather historyWarnings in Wisconsin, August 1998

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: 5664599.