...HELENE STILL PRODUCING CATASTROPHIC FLOODING OVER PORTIONS OF THE SOUTHERN APPALACHIANS AND TENNESSEE VALLEY... ...FUTURE ADVISORIES WILL BE ISSUED BY THE WEATHER PREDICTION CENTER... As of 4:00 PM CDT Fri Sep 27 the center of Helene was located near 37.5, -85.5 with movement NNW at 17 mph. The minimum central pressure was 984 mb with maximum sustained winds of about 35 mph.