SXUS73 KDMX 162230 RRA RERALO RECORD EVENT REPORT NATIONAL WEATHER SERVICE DES MOINES IA 0530 PM CDT THU APR 16 2020 $$ ...RECORD LOW TEMPERATURE TIED AT WATERLOO IA... A RECORD LOW TEMPERATURE OF 19 DEGREES WAS TIED AT WATERLOO IA TODAY. 19 DEGREES ALSO OCCURRED IN WATERLOO IA ON THIS DAY IN 1949 AND 1904. $$ KOTENBERG