BMKG Warns of Tidal Flooding in Parts of Indonesia as Supermoon Approaches

TEMPO.CO, Jakarta - The Meteorology, Climatology, and Geophysics Agency (BMKG) assesses that the Supermoon phenomenon that coincides with the perigee momentum (closest distance between moon and earth) on August 20, 2024, could increase the sea level.

Based on water level observation data, the agency expects tidal flooding to sweep several coastal areas in Indonesia. 

Head of the BMKG Maritime Meteorology Center, Eko Prasetyo, said the affected regions range from the coastal areas of North Sumatra, West Sumatra, Riau Islands, Jakarta, West Java, Central Java, East Java, East Kalimantan, West Kalimantan, and Papua.

According to Eko, tidal flooding can affect coastal communities and activities such as the loading and unloading of goods, salt ponds, and inland fisheries. 

He urged to the public to stay informed about maritime weather forecasts and information from BMKG. "Always be vigilant to anticipate the impact of maximum sea water tides," he said in a written statement, Monday, August 19, 2024.

BMKG mapped out several locations at risk of tidal flooding this week: 

1. Coastal areas of North Sumatra including Medan Belawan Coast, Medan Marelan Coast, and Medan Labuhan Coast

Tidal flooding period: August 19-25, 2024

2. Coastal areas of West Sumatra, especially the coast of Padang City

Tidal flooding period: August 19-23, 2024

3. Coastal areas of Riau Islands, including, Batam Coast, Dabo Singkep Coast, Karimun Coast, Bintan Coast, and Tanjung Pinang Coast

Tidal flooding period: August 18-31, 2024

4. Coastal areas of Jakarta, especially the Jakarta northern coastal region

Tidal flooding period: August 18-19, 2024

5. Coastal areas of West Java, especially the Cirebon Coast

Tidal flooding period: August 23-26 August 2024

6. Coastal areas of Central Java, especially the north coast of Central Java

Tidal flooding period: August 19 and 29-31, 2024

7. Coastal areas of East Java including Surabaya Port Coast, East Surabaya Coast, and Kalianget-Madura Coast

Tidal flooding period: August 18-22, 2024

8. Coastal areas of East Kalimantan, especially the Balikpapan Coast

Tidal flooding period: August 19-23, 2024

9. Coastal areas of West Kalimantan, especially the West Kalimantan Coast

Tidal flooding period: August 18-21, 2024

10. Coastal areas of Papua including North Jayapura Coast and Biak Numfor Coast

Tidal flooding period: August 20-22, 2024

IRSYAN HASYIM

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