JAKARTA - The Meteorology, Climatology and Geophysics Agency (BMKG) issued an early warning in the form of the potential for light, moderate, and heavy rain that may be accompanied by lightning and strong winds in most major cities in Indonesia at the beginning of Monday, June 1.
W Annisa L explained in general terms that the convergence area extends from the North Natuna Sea to the South China Sea, the North Pacific Ocean of Papua New Guinea, North Sumatra, Jambi to the Malacca Strait, West Kalimantan, South Kalimantan to Central Kalimantan, North Kalimantan, from Southeast Sulawesi to Central Sulawesi, North Maluku, from West Papua to West Papua.
"This condition is able to increase the potential for rain cloud growth along the areas that are passed by convergence or confluence," said Annisa, quoted by Antara on Monday morning.
Therefore, his party estimates that several major cities will have the potential to experience moderate to heavy rain accompanied by lightning and strong winds, namely in the Serang, Bandung, Banjarmasin, Ternate, Ambon and Nabire regions.
Several other major cities will experience light to moderate rain, namely the Banda Aceh, Medan, Tanjung Pinang, Tanjung Selor, Samarinda, Palangkaraya, Mamuju, Palu, Gorontalo, Manado, Sorong, Manokwari, Jayapura, Jayawijaya, and Merauke regions.
The big cities that are expected to only experience cloudy conditions today are the Pekanbaru, Jambi, Pangkal Pinang, Palembang, Bandar Lampung, Yogyakarta, Semarang, Surabaya, Pontianak, Denpasar, Mataram, Kupang, Makassar, and Kendari regions.
On Saturday (30/5), the BMKG reminded maritime service users that the potential for high waves reaching four meters in some coastal areas is at risk to the safety of national shipping.
BMKG Maritime Meteorology Director Eko Prasetyo asked all maritime transport operators, captains, and traditional fishermen to pay attention to the safe operational threshold of ships during the period from May 30 to June 2, 2026.
"The potential for high waves in some of these areas can be a risk to shipping safety.
For this reason, BMKG urges the public to always be vigilant, especially for fishermen who are active with transportation modes.
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