Wisconsin, 1999

Flash Flood in Wisconsin, May 16 to 17, 1999

May 16 to 17, 1999 · NWS ARX · 1 event in 1 county or zone

2 to 5 inches of rainfall forced the evacuation of a trailer park near Platteville when several feet of water rushed under mobile homes. Coon Branch Creek near Benton flooded a nearby park, causing damage to a ball field, a concession stand and a couple of bridges.

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
$200,000
Crop damage
$80,000
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 ARX wrote it up.

2 to 5 inches of rainfall forced the evacuation of a trailer park near Platteville when several feet of water rushed under mobile homes. Coon Branch Creek near Benton flooded a nearby park, causing damage to a ball field, a concession stand and a couple of bridges. The flood waters also swept away a 500 gallon gasoline tank as well as a car, which floated nearly 100 yards down the creek before coming to rest in some trees.

The radar

The La Crosse radar (KARX), 113 km away, was scanning. The volume nearest the first event began at 02:53 UTC.

Open the radar archive at this moment

Event by event

1 flash flood. Local standard time, as filed.

Flash Flood, Grant

When
May 16, 8:55 PM CST to May 17, 1:00 AM CST
Where
Grant County, South Portion
Property damage
$200,000
Crop damage
$80,000
Reported by
EMERGENCY MANAGER
Coordinates
42.868, -90.706 (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 1999Every state in 1999This day in weather historyWarnings in Wisconsin, May 1999

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: 5696209.