Flash Flood, La Crosse
- When
- May 17, 4:20 PM CST to 7:00 PM CST
- Where
- La Crosse County, Countywide
- Property damage
- $15,000
- Crop damage
- $10,000
- Reported by
- LAW ENFORCEMENT
- Coordinates
- 43.907, -91.115 (the zone’s center; the record gives no point)
Flash Flooding in Wisconsin, May 17, 2000
5 inches in two hours, which caused widespread street flooding in La Crosse and Onalaska (La Crosse County). In fact, law enforcement officials reported 8 inches of water over some roads in downtown La Crosse.
Where it happened
Every event with a place to put it; 2 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
The toll
- Deaths
- 0
- Injuries
- 0
- Property damage
- $23,000
- Crop damage
- $15,000
- Events
- 2
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 ARX wrote it up.
Thunderstorms produced rainfall amounts of nearly 2.5 inches in two hours, which caused widespread street flooding in La Crosse and Onalaska (La Crosse County). In fact, law enforcement officials reported 8 inches of water over some roads in downtown La Crosse. Between Sparta and Tomah (Monroe County), a mudslide occurred on Highway 16, while water covered a county road near Sparta.
The radar
The national radar mosaic for the moment the first event began.
Event by event
2 flash flood. Local standard time, as filed.
Flash Flood, Monroe
- When
- May 17, 5:00 PM CST to 7:00 PM CST
- Where
- Monroe County, Countywide
- Property damage
- $8,000
- Crop damage
- $5,000
- Reported by
- LAW ENFORCEMENT
- Coordinates
- 43.946, -90.618 (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
- Hail in Iowa, May 17, 2000
- Hail in Minnesota, May 17, 2000
- Hail and Damaging Wind in South Dakota, May 17, 2000
- Flash Flooding and Hail in Wisconsin, May 17 to 18, 2000
- Tornadoes and Hail in Colorado, May 17, 2000
- Hail in Wisconsin, May 17, 2000
- Hail in Iowa, May 17, 2000
- Hail in Kansas, May 17, 2000
- Hail and Damaging Winds in Nebraska, May 17 to 18, 2000
- Hail in Minnesota, May 17, 2000
- Hail and Damaging Winds in South Dakota, May 17, 2000
- Hail and Damaging Winds in South Dakota, May 17, 2000
More
Every storm in Wisconsin in 2000Every state in 2000This day in weather historyWarnings in Wisconsin, May 2000
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: 5142721, 5142722.