Jun 14, 1998
After a brief lull from the rain on the 12th, a large mesoscale convective system developed near the center of an upper level low pressure center over southwest Iowa during the early morning hours of the 14th. Extremely heavy rain fell over southwest and central Iowa from this storm. The rain gage at Atlantic had a 24 hour total rainfall of 13.18 inches. This established a new official record for the greatest amount of rainfall in a 24 hour period. Cass County was covered by a large area of
Source: NOAA National Weather Service Storm Events Database (event 5653148). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in Marshall County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.