FloodZoneMap.org

Flood — Winnebago, IA

May 13, 2005

Another round of heavy rainfall occurred during the middle part of the month. The month's most widespread rainfall occurred from late on the 10th until early on the 13th when an average of 2.42 inches of rain fell across the state. Nearly all of Iowa recorded at least an inch of rain during this 60 hour period with Adair reporting the most with 6.70 inches. Rain fell frequently during the last half of the month but amounts were on the light side with a state average of only 0.84 inches after th

Source: NOAA National Weather Service Storm Events Database (event 5446561). Narrative written by NWS staff at the time of the event.

Flood Risk Context for Winnebago, IA

This event is one of many recorded floods in Winnebago County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.

View Winnebago County flood data →

More Flood Stories

Flash Flood$10K damage

Winnebago, IA · Jun 24, 2018

A weak, occluded surface low pressure system was situated northwest of the area with its associated boundaries draped across western and southern Iowa.

Read the full account →
Flash Flood$25K damage

Winnebago, IA · Jul 13, 2013

A large convective complex developed to the northwest of Iowa during the night of the 12th into the morning of the 13th. Precipitable water values were very high, in excess of 2.1 inches over Minnesota.

Read the full account →
Flash Flood$25K damage

Winnebago, IA · Jun 21, 2013

A very unstable airmass was in place over Iowa during the predawn hours of the 21st. The elevated CAPE was in the 2000 to 3000 J/kg range. Downdraft CAPE was quite high at 1400 J/kg. There was 500 to 600 J/kg of CAPE available in the -10 to -30 C layer of the atmosphere.

Read the full account →
Flood$25K damage

Winnebago, IA · Jul 13, 2013

A large convective complex developed to the northwest of Iowa during the night of the 12th into the morning of the 13th. Precipitable water values were very high, in excess of 2.1 inches over Minnesota.

Read the full account →