322 SXUS99 KFSD 221154 CCA RERFSD RECORD EVENT REPORT...UPDATE NATIONAL WEATHER SERVICE SIOUX FALLS SD 155 AM CDT SUN AUG 22 2004 ...RECAPPING THE RECORD LOWS ESTABLISHED ACROSS THE TRI STATE THE MORNING OF SATURDAY AUGUST 21ST... SIOUX FALLS SET A NEW RECORD LOW...WHEN THE TEMPERATURE DROPPED TO 40 DEGREES YESTERDAY MORNING AT THE AIRPORT. THIS HANDILY BREAKS THE OLD RECORD FOR AUGUST 21ST OF 44 IN 1986. AT BROOKINGS THE TEMPERATURE DROPPED TO 33 DEGREES WHICH ESTABLISHED A NEW RECORD LOW. THE OLD RECORD LOW OF 39 DEGREES WAS SET BACK IN 1956. SPENCER IOWA SET A NEW RECORD OF 38 DEGREES...BREAKING THE OLD RECORD OF 40 IN 1925.