Missouri, 1999

Flooding and Damaging Winds in Missouri, August 7, 1999

August 7, 1999 · NWS EAX · 8 events in 5 counties and zones

Thunderstorms that developed over eastern Kansas tracked eastward across west-central Missouri on the evening of August 7. The storms produced damaging winds, with gusts estimated at up to 70 mph.

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
$25,000
Crop damage
None recorded
Events
8

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 that developed over eastern Kansas tracked eastward across west-central Missouri on the evening of August 7. The storms produced damaging winds, with gusts estimated at up to 70 mph. Local rainfall amounts of over 2 inches were reported across eastern Lafayette County, into Saline and Pettis Counties. The NWS co-op observer in Concordia recorded 3.74 inches of rainfall from this event.

The radar

The Pleasant Hill radar (KEAX), 18 km away, was scanning. The volume nearest the first event began at 02:02 UTC.

Open the radar archive at this moment

Event by event

6 thunderstorm wind, 2 flood. Local standard time, as filed.

Thunderstorm Wind, Cass

When
August 7, 8:04 PM CST
Where
Cass County, Gunn City
Measured
60 kt (69 mph)
Reported by
LAW ENFORCEMENT
Coordinates
38.670, -94.170

Thunderstorm Wind, Johnson

When
August 7, 8:30 PM CST
Where
Johnson County, Columbus
Measured
50 kt (58 mph)
Reported by
LAW ENFORCEMENT
Coordinates
38.850, -93.880

Numerous downed trees were reported near Columbus.

Thunderstorm Wind, Johnson

When
August 7, 9:00 PM CST
Where
Johnson County, 6 mi N of Knob Noster
Measured
50 kt (58 mph)
Reported by
LAW ENFORCEMENT
Coordinates
38.850, -93.570

Thunderstorm winds downed trees 6 miles north of Knob Noster.

Flood, Lafayette

When
August 7, 9:30 PM CST to 11:00 PM CST
Where
Lafayette County, Concordia
Property damage
$25,000
Reported by
NEWSPAPER
Coordinates
39.066, -93.785 (the zone’s center; the record gives no point)

High water covered State Highway 23 in Concordia. Newspaper accounts indicate that gravel was washed from some streets in and near Concordia, and the blacktop was ripped off of part of another street.

Thunderstorm Wind, Pettis

When
August 7, 9:32 PM CST
Where
Pettis County, 5 mi W of Sedalia
Measured
57 kt (66 mph)
Reported by
LAW ENFORCEMENT
Coordinates
38.700, -93.330

Thunderstorm Wind, Pettis

When
August 7, 9:44 PM CST
Where
Pettis County, 2 mi N of Sedalia
Measured
60 kt (69 mph)
Reported by
LAW ENFORCEMENT
Coordinates
38.730, -93.230

Thunderstorm Wind, Cooper

When
August 7, 9:50 PM CST
Where
Cooper County, Pilot Grove
Measured
50 kt (58 mph)
Reported by
EMERGENCY MANAGER
Coordinates
38.870, -92.920

Flood, Pettis

When
August 7, 10:00 PM CST to 11:00 PM CST
Where
Pettis County, Sedalia
Reported by
LAW ENFORCEMENT
Coordinates
38.728, -93.285 (the zone’s center; the record gives no point)

Law enforcement officials reported that US 50 near Sedalia was under 2 feet of water.

What these are

Thunderstorm Wind
Winds from a thunderstorm of 50 knots (58 mph) or more, or lower winds that caused damage or casualties. Measured gusts are marked MG, estimated EG.
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, August 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: 5716319, 5716321, 5716322, 5716326, 5716320, 5716323, 5716324, 5716325.