January 7, 2026 | 03:18 pm
TEMPO.CO, Jakarta - The Meteorology, Climatology, and Geophysics Agency (BMKG) has issued an early warning of potential high waves in several Indonesian waters from January 7 to 10, 2026.
BMKG forecaster Amryuda Mas Nalendra stated that Tropical Cyclone Jenna (15.2 South Latitude, 95.5 East Longitude) in the southwest Indian Ocean and the tropical cyclone 90W (13.5N, 127.9E) in the Philippine Sea have caused an increase in wind speed and high waves in Indonesian waters.
Amryuda mentioned that the wind patterns in the northern part of Indonesia generally move from the northwest to the northeast with wind speeds ranging from 6 to 25 knots. "Meanwhile, in the southern part of Indonesia, the wind patterns generally move from the southwest to the northwest with wind speeds ranging from 6-25 knots," he said in a written statement on Wednesday, January 7, 2025.
He added that these conditions have led to an increase in wave heights of 1.25-2.5 meters potentially occurring in the waters southwest of Morotai, the waters west of West Halmahera, the waters southwest of Obi, the waters east of Sanana, the waters northeast of Obi, the waters north of Taliabu, the waters east of Kayoa, the waters southeast of Morotai, the waters northeast of Morotai, the waters of the Loloda Islands, the waters of the Batang Dua Islands, the waters of Ternate, the waters west of Bacan, the waters northwest of Obi, the waters north of Mangole, the waters southeast of Obi, the waters south of Taliabu, Weda Bay, the waters east of the Halmahera Islands, the waters northwest of Morotai, and the waters of Gebe.
Furthermore, higher waves in the range of 2.5-4.0 meters are likely to occur in the southern Indian Ocean off West Java, the southern Indian Ocean off Yogyakarta, the southern Indian Ocean off Bali, the northern part of the Karimata Strait, the eastern part of the Arafura Sea, the southern Indian Ocean off Central Java, the southern Indian Ocean off East Java, the southern Indian Ocean off NTB, and the central part of the Arafura Sea.
"In addition, high waves reaching 4.0-6.0 meters are likely to occur in the North Natuna Sea," said Amryuda. "The potential high waves in these areas could pose a risk to maritime safety."
Therefore, Amryuda advised the public, especially fishermen, to beware of wind speeds exceeding 15 knots and wave heights above 1.25 meters when using transportation modes such as fishing boats.
For cargo barges, they should avoid wind speeds exceeding 16 knots and wave heights above 1.5 meters. For ferries, they should be wary of wind speeds exceeding 21 knots and wave heights above 2.5 meters.
"Residents and activities along the coasts of areas with potential high waves are urged to remain vigilant," he added.
Read: BMKG Warns of Rain and Strong Winds Across Greater Jakarta Today
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