376 SXUS99 KDSM 011749 RERDSM RECORD EVENT REPORT NATIONAL WEATHER SERVICE DES MOINES IA 1249 PM CDT TUE JUN 01 2004 ...RECORD MONTHLY MAXIMUM PRECIPITATION SET AT MASON CITY... 12.52 INCHES OF PRECIPITATION FELL DURING THE MONTH OF MAY IN MASON CITY. THIS DEMOLISHED THE OLD RECORD AMOUNT FOR MAY OF 8.42 INCHES SET IN 1918. IT HAS ALSO BEEN ONE OF THE WETTEST MONTHS EVER... RANKING 4TH ON THE ALL-TIME LIST. THE TABLE BELOW IS A LIST OF THE TOP 5 WETTEST MONTHS EVER RECORDED IN MASON CITY. RANK MONTH TOTAL 1 AUG 1980 15.76 2 SEPT 1965 14.41 3 JUNE 1954 14.35 4 MAY 2004 12.52 5 AUG 1928 12.28 $$ GRAMS