Wisconsin, 1999

Flash Flooding in Wisconsin, July 15, 1999

July 15, 1999 · NWS GRB · 2 events in 2 counties and zones

Rainfall of 5 to 8 inches in just a few hours caused significant flash flooding across Florence county and extreme northern Forest county. S.

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

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The toll

Deaths
0
Injuries
0
Property damage
$1.6 million
Crop damage
None recorded
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 GRB wrote it up.

Rainfall of 5 to 8 inches in just a few hours caused significant flash flooding across Florence county and extreme northern Forest county. An estimated 50 to 75 miles of roads required repairs, including U.S. Highways 2 and 141 and state highways 70 and 101. A total of 49 homes and 2 businesses suffered some water damage. The damage was mainly confined to basements with minimal first floor inundation.

The radar

The Marquette radar (KMQT), 100 km away, was scanning. The volume nearest the first event began at 06:03 UTC.

Open the radar archive at this moment

Event by event

2 flash flood. Local standard time, as filed.

Flash Flood, Florence

When
July 15, 12:05 AM CST to 4:00 AM CST
Where
Florence County, Florence
Property damage
$1.6 million
Reported by
LAW ENFORCEMENT
Coordinates
45.848, -88.398 (the zone’s center; the record gives no point)

Flash Flood, Forest

When
July 15, 12:05 AM CST to 4:00 AM CST
Where
Forest County, Alvin
Reported by
LAW ENFORCEMENT
Coordinates
45.667, -88.770 (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, July 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 2026-09-30. Each event’s entry at NCEI: 5711099, 5711100.