Indonesia’s Meteorology, Climatology, and Geophysical Agency (BMKG) issued an early warning about the potential of high waves in various domestic waters on September 29-30, 2024. Wind patterns can trigger an increase in sea waves up to a maximum height of 2.5 meters.
Referring to the BMKG’s official statement, on Sunday, September 29, 2024, winds in the northern part of Indonesia tend to blow from east to southeast with speeds ranging from 4-15 knots. Winds in the southern part also move in the same direction, but their speed can reach 25 knots.
“The highest wind speed was observed in the waters west of Lampung, Sunda Strait, south of Banten, Java Sea, west of Selayar Islands, Flores Sea, Banda Sea, and east of Arafuru Sea,” according to the latest BMKG statement.
Waves as high as 1.25-2.5 meters are likely to appear in the waters north of Sabang Island, west of Aceh-Mentawai Islands, west of Bengkulu-Lampung, West Indian Ocean off Sumatra, south of Java-Sumba Islands, south of Bali-Lombok-Alas, west of Sumba Strait, and Sawu Sea. There is also a similar potential in the South Indian Ocean off Java-West Nusa Tenggara, central and eastern Java Sea, south of Makassar Strait, and east and central Arafuru Sea.
The BMKG advises residents living and engaging in activities on the coast to be wary of these high waves. “The potential of these high waves can also pose risks to maritime safety,” as stated in their advisory.
Fishermen with small boats are advised to be cautious of winds exceeding 15 knots. Fishing boats should also be wary of sea waves exceeding 1.25 meters in height. Barge ships should also consider the risk of winds above 16 knots and waves over 1.5 meters.
Meanwhile, ferry crossings are advised to be cautious of winds stronger than 21 knots and wave heights over 2.5 meters. As for jumbo-sized fleets, such as cargo or cruise ships, they should beware of wind speeds exceeding 27 knots and wave heights over 4 meters.