Missouri, 1999

Flash Flooding in Missouri, June 12, 1999

June 12, 1999 · NWS LSX · 3 events in 3 counties and zones

Rainfall of 2 to 4 inches caused flash flooding across the area. The worst flooding was in the town of Madison in west Monroe County where virtually all streets went underwater.

Where it happened

Every event with a place to put it; 3 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
None recorded
Crop damage
None recorded
Events
3

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 LSX wrote it up.

Rainfall of 2 to 4 inches caused flash flooding across the area. The worst flooding was in the town of Madison in west Monroe County where virtually all streets went underwater. Highway 151 was flooded at several location in Monroe and west Audrain County. Flooding also occurred along Highway 22 in north Boone County.

The radar

The St Louis radar (KLSX), 144 km away, was scanning. The volume nearest the first event began at 01:59 UTC.

Open the radar archive at this moment

Event by event

3 flash flood. Local standard time, as filed.

Flash Flood, Monroe

When
June 12, 8:00 PM CST to 9:45 PM CST
Where
Monroe County, West Portion
Reported by
LAW ENFORCEMENT
Coordinates
39.496, -92.001 (the zone’s center; the record gives no point)

Flash Flood, Audrain

When
June 12, 8:30 PM CST to 9:45 PM CST
Where
Audrain County, West Portion
Reported by
LAW ENFORCEMENT
Coordinates
39.216, -91.842 (the zone’s center; the record gives no point)

Flash Flood, Boone

When
June 12, 8:30 PM CST to 9:45 PM CST
Where
Boone County, North Portion
Reported by
LAW ENFORCEMENT
Coordinates
38.991, -92.310 (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 Missouri in 1999Every state in 1999This day in weather historyWarnings in Missouri, June 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: 5705144, 5705145, 5705146.