Apr 6, 1998
A southeast flow of moist air was in place over Iowa. This flow brought moisture north with surface dew point temperatures rising into the low to mid 50s. Lapse rates were steep with the freezing level only around 9000 feet. The low freezing level contributed to widespread hail as thunderstorms formed during the mid afternoon hours. Synoptically, an upper level low pressure system was advancing northeast from the southwest U.S. A surface low formed over Oklahoma with a trough extending nort
Source: NOAA National Weather Service Storm Events Database (event 5641622). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in Crawford County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.