A number of areas on the island of Java experienced extreme weather since last week until today. Some areas such as in Pacitan, Yogyakarta, Magetan, Cilacap Banyumas, to West Java and Banten region became the most affected areas of extreme weather.
Meteorology, Climatology and Geophysics Agency (BMKG) since last week has asked the community to be alert to this extreme weather. BMKG detects tropical cyclones, called "cempaka" growing very close to the southern coast of Java Island.
"Tropical Cyclone Cempaka born, alert extreme weather three days ahead," said BMKG Meteorology Deputy R Mulyono Rahadi Prabowo to Liputan6.com, Jakarta, Tuesday, November 28, 2017.
The existence of tropical cyclone Cempaka in waters south of Central Java resulted in changes in weather patterns around the lane. The impact of tropical cyclone Cempaka in the form of rainfall potential in some areas in Java.
"The potential for heavy rain in Banten, DKI Jakarta, West Java, Central Java, Yogyakarta and East Java," Mulyono said.
Public Relations BNPB, Sutopo Purwo Nugroho said Cempaka tropical cyclone is, said Sutopo will decay on December 2, 2017.
"The impact of the cyclone per 29/11/2017 morning 19 people were killed, thousands of homes were flooded and other damage," said Sutopo.
BMKG warns of the emergence of the low pressure center of Hurricane Cempaka in the Indian Ocean south of Java.
This low pressure center triggered high waves and potentially caused extreme weather, especially in southern part of Java Island, especially in Banyumas, Cilacap and Kebumen districts of Central Java.
BMKG Prakirawan Cilacap Observation Post, Rendy Krisnawan said, the wave in the Indian Ocean waters potentially reaches 2.5-4 meters in loose waters. Meanwhile, in the coastal waters, waves potentially as high as 2 meters.
He urged small boat fishermen to be more vigilant and not to sail beyond 5 nautical miles. That way, when high waves appear, fishermen can spur boats toward the beach and avoid the disaster.
Head of Center for Data, Information and Public Relations of National Disaster Management Agency (BNPB), Sutopo Purwo Nugroho launched the disaster site in the south of Java island.
Hurricane Cempaka is about 32 km south-southeast of Pacitan East Java Province with power of 65 km per hour.
Temporary data collected by BNPB Post, disaster occurred in Situbondo, Sidoarjo, Pacitan, Wonogiri, Ponorogo, Serang, Sukabumi, Purworejo, Tulungagung, Semarang, Klaten, Malang, Wonosobo, Klungkung, Yogyakarta City, Gunung Kidul, Kulon Progo, Sleman, Bantul, Kudus, and Sukoharjo.
Pacitan as the closest location to Hurricane Cempaka started the disaster with heavy rains causing floods and landslides on Tuesday, 28 November 2017 in the morning. The overflowing rivers caused thousands of homes to flood.
Floods occurred 13 villages in 3 sub-districts, namely Pacitan Sub-district (Sirnoboyo Village, Sukoharjo Village, Kayen Village, Kembang Village, Ploso Village, Arjowinangun Village, Sidoharjo Village), Kebon Agung Sub-District (Purworejo Village, Banjarjo Village, Kebon Agung Village) and Arjosari Sub-district (Pagutan Village, Jatimalang Village, Arjosari Village). The southern passageway was completely paralyzed.
Due to extreme weather, floods, landslides and tornado also hit the area in DI Yogyakarta.
Yogyakarta Special Disaster Management Agency said extreme weather triggered by tropical cyclone cempaka for two days resulted in 114 disaster points in five districts / cities in Yogyakarta.
"114 disaster points consist of floods, landslides and strong winds," said Task Force (Plt) Head of Special Disaster Management Agency of Yogyakarta (BPBD DIY) Krido Suprayitno when found in the Office of Pusdalops BPBD DIY, Tuesday night 28 November 2017 , quoted Antara.
Krido said that 114 of the 114 points, the most dominant are 68 strong winds scattered in Bantul regency identified at 32 points, Kulon Progo 12 point, Gunung Kidul 28 point and Sleman regency 12 point.
While the flood disaster is in 29 points with the dominant number in Gunung Kidul Regency which reaches 20 points and 9 other points spread evenly in other districts.
Krido assessed the dominant flooding phenomenon in Gunung Kidul besides due to the number of basins, it happened because the rainfall in the regency was recorded to reach 200 milli meters (mm) per day or higher than rainfall in other districts.
"This phenomenon has never happened in previous years because Gunung Kidul is usually famous for frequent drought," he said.
