The Meteorology, Climatology and Geophysics Agency (BMKG) noted that most of Indonesia (96% of 342 season zones) has entered the rainy season. It has been predicted that the peak of the rainy season will occur in January – February 2021 in parts of southern Sumatra, most of Java including DKI Jakarta, parts of Kalimantan, Bali, Nusa Tenggara, parts of Sulawesi, parts of Maluku, parts of West Papua and parts of southern Papua. Based on these conditions, awareness of potential extreme weather must be increased.
In addition, the presence of a center of low pressure in northern Indonesia and in northern Australia can affect wind direction and speed patterns, thereby increasing the potential for rain cloud growth in Indonesia.
Based on these conditions, BMKG predicts that in the next week, heavy rainfall can be accompanied by lightning and strong winds that have the potential to occur in various regions, namely West Sumatra, South Sumatra, Banten, DKI Jakarta, West Java, Central Java, DI Yogyakarta, East Java. .
Then Bali, West Nusa Tenggara, East Nusa Tenggara, West Kalimantan, Central Kalimantan, South Kalimantan, East Kalimantan, North Kalimantan, North Sulawesi, Central Sulawesi, South Sulawesi, Southeast Sulawesi, North Maluku, Maluku, West Papua and Papua.
Based on the impact-based weather forecast (IBF) for the impact of floods / banjir bandang, for the next 2 days on 16-17 February 2021 the potential impact with alert status is Central Java.
For wave height for the next week to February 21, 2021, with a height of 1.25 – 2.5 m (medium category) is likely to occur in the northern part of the Malacca Strait, Natuna Sea, eastern waters of Kep Bintan – Lingga, northern waters of Bangka Belitung, Gelasa Strait , Karimata Strait, Southern Kalimantan waters, North Kalimantan waters, northern Java waters, Bali Sea, South Bali Strait, Lombok Strait, Alas Strait, Sape Strait, Sumba Strait, Savu Sea, Ombai Strait, Kupang waters – Rote Island, Waters Kep Selayar, Bone Bay, Makassar Strait, western and northern Sulawesi waters, central Sulawesi Sea, southern Maluku Sea, Seram Sea, Fakfak waters – Kaimana – Amamapare – Agats, Cendrawasih Bay.
While waves with a height of 2.5 – 4.0 m (high category) are likely to occur in the North Natuna Sea, northern waters of the Kep.Anambas – Kep.Natuna, northern Sabang waters, West Aceh waters to Mentawai Islands, Enggano waters – Bengkulu, The waters west of Lampung, waters south of Java to P. Sumba, Indian Ocean west Sumatra to southern NTT, Java Sea, Sumbawa Sea, Flores Sea, Banda Sea, Arafuru Sea to the east, Halmahera Sea, waters north of West Papua to Papua, Pacific Ocean north of Halmahera to Papua.
The public is urged to remain vigilant about the impacts that can be caused by extreme weather conditions such as floods, landslides, flash floods, puddles, strong winds, fallen trees, and slippery roads.