433 SXUS99 KDSM 050710 RERDSM RECORD EVENT REPORT NATIONAL WEATHER SERVICE DES MOINES IA 202 AM CDT MON MAY 05 2003 ...RECORD DAILY MAXIMUM RAINFALL SET AT DES MOINES... A RECORD RAINFALL OF 2.73 INCHES WAS SET AT DES MOINES SUNDAY MAY 4TH. THIS BREAKS THE OLD RECORD OF 1.39 SET IN 1886. ...RECORD DAILY MAXIMUM RAINFALL SET AT MASON CITY... A RECORD RAINFALL OF 2.21 INCHES WAS SET AT MASON CITY SUNDAY MAY 4TH. THIS BREAKS THE OLD RECORD OF 1.82 SET IN 1977. $$ JAW