Tropical Cyclone 95B Strengthens, Warning of Extreme Weather in Aceh and Riau

JAKARTA, KOMPAS - The Meteorology, Climatology, and Geophysics Agency has detected the strengthening of tropical cyclone seed 95B in the waters east of Aceh, around the Malacca Strait. This cyclone seed has the potential to develop into a tropical cyclone and may trigger extreme weather conditions such as heavy rain, high waves, and strong winds in the regions of Aceh, North Sumatra, West Sumatra, and Riau.

The Head of the Meteorology, Climatology, and Geophysics Agency (BMKG), Teuku Faisal Fathani, in Jakarta, Wednesday (26/11), stated that the public should increase vigilance against the potential for extreme weather due to the strengthening movement of cyclone seed 95B. Currently, BMKG continues to monitor the intensity of 95B, which has been identified since November 21, 2025.

"The regional government is urged to be on alert for the potential impacts of extreme weather, such as the risk of flooding, coastal flooding, and fallen trees due to strong winds. Specifically for fishermen and maritime transport operators, it is essential to pay close attention to high wave conditions that pose a risk to navigation safety. Security and safety are our top priorities," said Faisal.

The Deputy for Meteorology at BMKG, Guswanto, stated that based on the latest observations, this system is still located near the eastern waters of Aceh this morning and is triggering the widespread growth of rain clouds. This condition has the potential to increase heavy to extreme rainfall accompanied by strong winds in the coastal areas of Aceh, North Sumatra, West Sumatra, and Riau.

"The chance of this seed developing into a tropical cyclone is quite high in the next 24 hours, considering the identification of increased winds of over 35 knots (65 km/h), thus the public is urged to remain vigilant against the potential for extreme weather in the near future," explained Guswanto.

Direct impact

The Director of Meteorology at BMKG, Andri Ramdhani, added that within the next 24 hours, the cyclone seed 95B will have a direct impact on the weather and sea waves in Indonesia, particularly around Aceh and North Sumatra. Based on BMKG's analysis, this system has the potential to cause heavy to extreme rainfall in Aceh and North Sumatra, as well as in parts of West Sumatra and Riau; and strong winds in most areas of Northern Sumatra.

According to Andri, the cyclone seed 95B has the potential to generate high waves of 2.5 - 4 meters (m) in the central Malacca Strait, the waters off the eastern coast of North Sumatra, as well as the western Indian Ocean from Aceh to Nias. Meanwhile, waves categorized as moderate, measuring 1.25 - 2.5 m, are expected to occur in the northern Malacca Strait, the waters of Rokan Hilir, and Dumai-Bangkalis.

The BMKG emphasizes the importance of accessing official information through BMKG channels and avoiding the spread of irresponsible information.

"The Meteorology, Climatology, and Geophysics Agency (BMKG) through the Tropical Cyclone Warning Center (TCWC) Jakarta will continue to conduct intensive monitoring for a full 24 hours on the movement of this system. BMKG emphasizes the importance of accessing official information through BMKG channels and avoiding the dissemination of unverified information," explained Andri.

In addition to the cyclone seed 95B, the emergence of tropical cyclone KOTO in the Sulu Sea, Philippines, has also been detected, which developed from the tropical cyclone seed 92W on November 25, 2025. This tropical cyclone has the potential to trigger extreme weather in West Kalimantan and the Riau Islands. Furthermore, this cyclone also causes high waves in the eastern waters of Indonesia.

Flood disaster spreads

The Head of the Data, Information, and Disaster Communication Center of the National Disaster Management Agency (BNPB), Abdul Muhari, stated that hydrometeorological disasters triggered by heavy rainfall have affected several regions in Indonesia this week. In Kebumen Regency, Central Java, prolonged heavy rain and strong winds have caused flooding in three sub-districts: Karangsambung, Alian, and Kebumen. A total of 4,695 individuals have been recorded, and data collection is still ongoing by the authorities. Material losses include one pesantren with 2,200 individuals, as well as an affected area of 474.71 hectares.

The Kebumen government has declared a state of emergency through the Central Java Governor's Decree Number 100.3.3.1/409 concerning the Declaration of a State of Emergency for Floods, Landslides, and Extreme Weather in Central Java Province, effective from October 23, 2025, to May 23, 2026.

In East Java, heavy rainfall in the upstream area of the Welang River caused sedimentation and narrowing of the river width, as well as the breach of the Welang River embankment in the Pasuruan City area, on Monday (24/11). The affected areas include the Karangketug, Randusari, and Krapyakrejo villages in the Gadingrejo sub-district. A total of 540 families were impacted by this incident.

Flooding also occurred in Ciamis Regency, West Java. Heavy rainfall caused the Sipon River to overflow and inundate residential areas. The affected locations are Lakbok and Baregbeg Districts. A total of 66 families have been impacted. The Ciamis Regional Disaster Management Agency is coordinating with local authorities to carry out emergency response efforts.

In Aceh Province, moderate to heavy rainfall occurred in North Aceh Regency from November 19 to 20, 2025. The increase in water volume with inadequate drainage capacity, along with runoff from hilly areas, caused water to accumulate rapidly. A total of seven sub-districts were affected, namely Tanah Jambo Aye, Seunuddon, Baktya, Muara Batu, Langkahan, Syamtalira Aron, and Samudera.

A total of 2,476 households / 3,260 individuals have been affected and are still being assessed. Material losses include 2,476 housing units, one main road affected by erosion, 200 hectares of rice fields, and 15 fish ponds also impacted. The local government has declared a state of emergency through the North Aceh Regent's Decree Number 360/845/2025 regarding the Declaration of a State of Emergency in North Aceh for the year 2025, effective from November 23, 2025, to January 15, 2026.