Missouri, 1998

Flooding in Missouri, July 30, 1998

July 30, 1998 · NWS EAX · 4 events in 4 counties and zones

4 flood, as filed by the National Weather Service.

Where it happened

Every event with a place to put it; 4 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
4

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.

The radar

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

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Event by event

4 flood. Local standard time, as filed.

Flood, Pettis

When
July 30, 3:00 AM CST
Where
Pettis County, Sedalia
Coordinates
38.728, -93.285 (the zone’s center; the record gives no point)

One to two inches of rain in less than two hours resulted in numerous reports of street flooding in Sedalia. Highway 50 was closed in both directions out of Sedalia until 415 AM CST.

Flood, Cass

When
July 30, 6:10 AM CST
Where
Cass County, 7 mi NE of Harrisonville
Coordinates
38.647, -94.355 (the zone’s center; the record gives no point)

A National Weather Service employee reported a water depth of approximately 3 feet covering Route P, 7 miles northeast of Harrisonville. The highwater was adjacent to the entrance of a public golf course.

Flood, Jackson

When
July 30, 6:22 AM CST
Where
Jackson County, Unity Vlg
Coordinates
39.009, -94.346 (the zone’s center; the record gives no point)

Very heavy rain resulted in the overtopping of several small lakes in Unity Village. The excess water from the overtopping lakes flowed into and contributed to the river flooding along the Blue River.

Flood, Johnson

When
July 30, 8:40 AM CST
Where
Johnson County, Knob Noster
Coordinates
38.744, -93.806 (the zone’s center; the record gives no point)

One to three inches of rain fell in less than 3 hours across much of Johnson County. This heavy rain resulted in numerous reports of flooded roadways and intersections. In Knob Nobster, Highway 23 was closed northward to the Blackwatrer River and Highway 50 to the Lafayette County line were closed due to high water.

What these are

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 1998Every state in 1998This day in weather historyWarnings in Missouri, July 1998

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: 5656084, 5656085, 5656082, 5656083.