BMKG: Tropical Cyclone Jangmi movement increases rainfall potential in Indonesia

Jakarta (ANTARA) - BMKG detected movement of Tropical Cyclone Jangmi in the northern Philippine Sea, triggering convergence areas and increasing the potential for rain cloud formation in several Indonesian regions.

BMKG forecaster Henokvita, in a weather broadcast from Jakarta on Saturday, said the extreme weather system currently has maximum wind speeds of up to 35 knots and a minimum atmospheric pressure of 998 hectopascals (hPa).

“It is forecast to move northwest and continue strengthening over the next 48 to 72 hours. The cyclone induces convergence and confluence areas in the northern Pacific Ocean, North Maluku to northern Papua,” he said.

Henokvita explained that besides Jangmi, national rain cloud formation is also contributed by another cyclonic circulation in the South China Sea, whose convergence zone extends to the Natuna Islands.

These atmospheric dynamics anomalies stimulate the formation of a secondary convergence belt stretching from Papua to Cenderawasih Bay, Southeast Sulawesi, Kalimantan, to Central Java.

This combination of phenomena directly increases the potential for moderate to heavy rainfall in several regions, including the threat of strong gusts that could occur at any time in East Nusa Tenggara (NTT).

For major cities in western Indonesia, extreme weather in the form of thunderstorms looms over Jambi, Banjarmasin, and Tanjung Selor, while Jakarta, Banda Aceh, Palembang, and Surabaya are forecast to have thick cloud cover.

Meanwhile, eastern Indonesia regions are dominated by light rain potential in cities such as Palu, Kendari, Ternate, Ambon, and Merauke, with Gorontalo being an exception as it may experience rain accompanied by thunderstorms.