Cempaka tropical Cyclone occurred on 27 November 2017 in the Indian Ocean, just south of Central Java. The cyclon generated an extrem rainfall and flash floods in Southern part of Central Java, including the Gunungsewu Karst Area. The highest rainfall recorded on November 28, 2017 in area is 369 mm/day. This study aimed at analyzing the geomorphological characteristics of affected areas. The analysis was conducted by mapping the flooded sites, morphological analysis, and morphometry analysis using a topographical map, high-resolution remote sensing image and high-resolution image from unmanned aerial vehicle (UAV). The results show that floods in the study site occured in (1) flash swallet hole, (2) karst window, (3) resurgence and (4) flash flood in doline with small ponor.