Noticed there was heavy DXing on the FM side this evening especially to the east. Augusta and Greenville stations were very clear. Most notable was WROQ 101.1 Greenville, WBBQ 104.3 in Augusta, WLUB 105.7 in Augusta, WFBC 93.7 Greenville, WSPA 98.9 Greenville. So what special conditions in the troposphere tonight caused this?