Cyclone Disturbances Raise Rain, Sea Warnings in Sumatra
Indonesia’s disaster agency warned of possible moderate to heavy rain and higher waves in parts of Sumatra as two tropical disturbances were monitored over the Bay of Bengal and Indian Ocean.
JAKARTA — Two tropical disturbances over waters west of Indonesia could bring moderate to heavy rain and rougher seas to parts of Sumatra, prompting warnings for coastal communities and travelers in the region.
Indonesia’s National Disaster Management Agency (BNPB) said Saturday, Nov. 14, 2026, that disturbance 92B was over the Bay of Bengal and 96S over the Indian Ocean west of Sumatra. Neither system was confirmed to have developed into a tropical cyclone.
Rain and coastal conditions under watch
BNPB said disturbance 92B could affect Aceh, while 96S could influence Aceh, North Sumatra and West Sumatra. The agency warned of possible moderate to heavy rain and a potential rise in wave heights, but did not say such conditions had already occurred across the areas identified.
At 7 a.m. local time (WIB) on Saturday, Indonesia’s Meteorology, Climatology and Geophysical Agency (BMKG) recorded maximum winds of about 25 knots, or 46 kilometers per hour, for the two systems.
The warnings carry implications for daily travel and activities along the coast, where changing sea conditions may pose risks. BNPB urged residents to monitor weather updates and check conditions at sea before heading out.
Development chances could rise
BNPB disaster information and communications center chief Berton Panjaitan said the systems had a moderate chance of developing into tropical cyclones within 24 hours. The likelihood could rise to the moderate-to-high category over the following 48 to 72 hours.
“The chance of these systems developing into tropical cyclones within 24 hours is in the moderate category and increases to moderate-high over the next 48-72 hours,” Berton said Saturday.
“Besides rain, people also need to pay attention to the potential for increased sea wave heights,” Berton said.
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