SXUS73 KDMX 312237 RERDMX RECORD EVENT REPORT NATIONAL WEATHER SERVICE DES MOINES IA 537 PM CDT SAT JUL 31 2021 ...RECORD DAILY MAXIMUM RAINFALL SET AT OTTUMWA IA... A RECORD RAINFALL OF 2.21 INCHES WAS SET AT OTTUMWA IA TODAY. THIS BREAKS THE OLD RECORD OF 1.78 INCHES SET IN 1956. $$