740 SXUS99 KFSD 191406 RERSUX RECORD EVENT REPORT NATIONAL WEATHER SERVICE SIOUX FALLS SD 906 AM CDT THU AUG 19 2004 ...RECORD LOW TEMPERATURE SET AT SIOUX CITY AND TIED AT SPENCER... THE MORNING LOW AT THE SIOUX CITY GATEWAY AIRPORT OF 43 DEGREES BREAKS THE RECORD FOR THE DATE OF 46 DEGREES SET IN 1950 AND 1967. THE MERCURY AT SPENCER IOWA FELL TO 40 DEGREES THIS MORNING...TIEING THE RECORD FOR THE DATE SET IN 1967. $$