Flooding in Iowa, July 3 to 10, 1999

Name: Flooding in Iowa, July 3 to 10, 1999
Start: 1999-07-03T19:00
End: 1999-07-10T18:00
Location: Iowa

July 3 to 10, 1999 · NWS DVN · 6 events in 6 counties and zones

fell from July 2nd through the 3rd and resulted in flooding on the Wapsipinicon, Iowa and Cedar rivers. Flooding was minor to moderate on the Wapsipinicon and Cedar rivers, and minor on the Iowa River.

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

Open the live radar over this ground

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 DVN wrote it up.

Summary of July 3-10 flooding event:Very heavy rains...with local amounts up to 8 inches...fell from July 2nd through the 3rd and resulted in flooding on the Wapsipinicon, Iowa and Cedar rivers. Flooding was minor to moderate on the Wapsipinicon and Cedar rivers, and minor on the Iowa River.

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, Cedar

When: July 3, 7:00 PM CST to July 10, 6:00 PM CST
Where: Cedar forecast zone
Reported by: OFFICIAL NWS OBS.
Coordinates: 41.772, -91.132 (the zone’s center; the record gives no point)

Flood, Clinton

When: July 3, 7:00 PM CST to July 10, 6:00 PM CST
Where: Clinton forecast zone
Reported by: OFFICIAL NWS OBS.
Coordinates: 41.898, -90.532 (the zone’s center; the record gives no point)

Flood, Muscatine

When: July 3, 7:00 PM CST to July 10, 6:00 PM CST
Where: Muscatine forecast zone
Reported by: OFFICIAL NWS OBS.
Coordinates: 41.484, -91.113 (the zone’s center; the record gives no point)

Flood, Scott

When: July 3, 7:00 PM CST to July 10, 6:00 PM CST
Where: Scott forecast zone
Reported by: OFFICIAL NWS OBS.
Coordinates: 41.637, -90.623 (the zone’s center; the record gives no point)

Flood, Louisa

When: July 3, 7:00 PM CST to July 10, 6:00 PM CST
Where: Louisa forecast zone
Reported by: OFFICIAL NWS OBS.
Coordinates: 41.219, -91.260 (the zone’s center; the record gives no point)

Flood, Des Moines

When: July 3, 7:00 PM CST to July 10, 6:00 PM CST
Where: Des Moines forecast zone
Reported by: OFFICIAL NWS OBS.
Coordinates: 40.923, -91.181 (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

Every storm in Iowa in 1999 Every state in 1999 This day in weather history Warnings in Iowa, July 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: 5719734, 5719735, 5719736, 5719737, 5719738, 5719739.