Missouri, 1999

Flooding in Missouri, May 12 to 31, 1999

May 12 to 31, 1999 · NWS EAX · 6 events in 6 counties and zones

Modest rainfall amounts of around an inch on May 11 across sections of west-central and central Missouri were sufficient to trigger another round of river flooding. , Big Creek near Blairstown, the South Grand River at Urich, and the Grand River at Sumner and Brunswick.

Where it happened

Every event with a place to put it; 6 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
6

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.

Modest rainfall amounts of around an inch on May 11 across sections of west-central and central Missouri were sufficient to trigger another round of river flooding. Streams that flooded included the Missouri River at Napoleon, Waverly, Miami, and Boonville, the Blackwater River at Valley City and Blue Lick., Big Creek near Blairstown, the South Grand River at Urich, and the Grand River at Sumner and Brunswick. Further heavy rainfall later in the month kept the Missouri at Napoleon, Waverly, and Miami in flood into the month of June.

The radar

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

Open the radar archive at this moment

Event by event

6 flood. Local standard time, as filed.

Flood, Lafayette

When
May 12, 12:00 AM CST to May 31, 11:59 PM CST
Where
Lafayette forecast zone
Reported by
OFFICIAL NWS OBS.
Coordinates
39.066, -93.785 (the zone’s center; the record gives no point)

Flood, Saline

When
May 12, 12:00 AM CST to May 31, 11:59 PM CST
Where
Saline forecast zone
Reported by
OFFICIAL NWS OBS.
Coordinates
39.137, -93.202 (the zone’s center; the record gives no point)

Flood, Henry

When
May 12, 12:00 AM CST to May 22, 11:59 PM CST
Where
Henry forecast zone
Reported by
OFFICIAL NWS OBS.
Coordinates
38.385, -93.793 (the zone’s center; the record gives no point)

Flood, Johnson

When
May 12, 12:00 AM CST to May 13, 11:59 PM CST
Where
Johnson forecast zone
Reported by
OFFICIAL NWS OBS.
Coordinates
38.744, -93.806 (the zone’s center; the record gives no point)

Flood, Chariton

When
May 12, 12:00 AM CST to May 14, 11:59 PM CST
Where
Chariton forecast zone
Reported by
OFFICIAL NWS OBS.
Coordinates
39.515, -92.963 (the zone’s center; the record gives no point)

Flood, Cooper

When
May 14, 12:00 AM CST to May 27, 11:59 PM CST
Where
Cooper forecast zone
Reported by
OFFICIAL NWS OBS.
Coordinates
38.844, -92.810 (the zone’s center; the record gives no point)

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 1999Every state in 1999This day in weather historyWarnings in Missouri, May 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: 5698741, 5698742, 5698744, 5698745, 5698746, 5698743.