Missouri, 1999

Flash Flooding and Flood in Missouri, April 22, 1999

April 22, 1999 · NWS EAX · 3 events in 3 counties and zones

Thunderstorms on April 22 produced excessive rainfall across the Kansas City metro area, resulting in flash flooding in Jackson and Platte Counties, as well as urban and small stream flooding in Clay County. 26 inches for the day.

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
$25,000
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 EAX wrote it up.

Thunderstorms on April 22 produced excessive rainfall across the Kansas City metro area, resulting in flash flooding in Jackson and Platte Counties, as well as urban and small stream flooding in Clay County. Kansas City International Airport reported 1.82 inches of rain in 2 hours, and a total of 2.26 inches for the day. The downtown Kansas City airport also received over 2 inches of rain. Media sources reported water up to car windows and water damage inside a restaurant in Westport. Reports were also received of rescues from vehicles stalled in high water in Kansas City. Emergency managers reported numerous road closings due to high water, mainly north of Kansas City in Platte and Clay Counties. One death was an indirect result of the flooding, as a man was swept into a drain pipe after falling into a drainage ditch in Platte County.

The radar

The national radar mosaic for the moment the first event began.

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Event by event

2 flash flood, 1 flood. Local standard time, as filed.

Flash Flood, Jackson

When
April 22, 12:00 PM CST to 5:00 PM CST
Where
Jackson County, Countywide
Property damage
$25,000
Reported by
BROADCAST MEDIA
Coordinates
39.009, -94.346 (the zone’s center; the record gives no point)

Flash Flood, Platte

When
April 22, 12:00 PM CST to 5:00 PM CST
Where
Platte County, Countywide
Reported by
EMERGENCY MANAGER
Coordinates
39.381, -94.774 (the zone’s center; the record gives no point)

Flood, Clay

When
April 22, 12:00 PM CST to 5:00 PM CST
Where
Clay County, Countywide
Reported by
EMERGENCY MANAGER
Coordinates
39.311, -94.421 (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.
Flood
Flooding that develops more slowly than a flash flood: rivers leaving their banks, or water standing over land for an extended time.

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, April 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: 5692072, 5692073, 5692074.