421 SXUS99 KDSM 041503 RERDSM RECORD EVENT REPORT NATIONAL WEATHER SERVICE DES MOINES IA 900 AM CST THU APR 4 2002 ...RECORD LOW TEMPERATURES ESTABLISHED... IT WAS A RATHER CHILLY MORNING ACROSS IOWA. HIGH PRESSURE TO OUR WEST...ALONG WITH LIGHT WINDS AND CLEAR SKIES ALLOWED TEMPERATURES TO PLUMMET TO NEW RECORD LOWS AT A COUPLE OF LOCATIONS THIS MORNING. CITY NEW LOW PREVIOUS RECORD DATE OTTUMWA 15 16 1975 LAMONI 19 21 1955 .................................................................... AT DES MOINES AND MASON CITY WE WERE WITHIN 3 OR 4 DEGREES OF OUR RESPECTIVE RECORDS. BARLOW