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Cyclone Senyar
North Indian Ocean cyclonic storm and Pacific tropical depression in 2025 From Wikipedia, the free encyclopedia
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Cyclonic Storm Senyar is a rare and very deadly tropical cyclone that brought heavy rains, catastrophic flooding and landslides to the Malay Peninsula and Sumatra in November 2025. The thirteenth tropical depression and third cyclone of the 2025 North Indian Ocean cyclone season, Senyar developed in the Strait of Malacca from a low-pressure area that formed on 22 November. The disturbance headed westwards and intensified into a depression and then a deep depression on 25 November. It then further intensified into a cyclone before making landfall on northern Sumatra near midnight on 26 November, and then paralleled the Sumatran coast as it weakened and made a second landfall in Peninsular Malaysia. It was the second tropical cyclone documented in the Strait of Malacca after Tropical Storm Vamei in 2001, and the first to form there since the beginning of reliable records.
 | This article is about a current tropical cyclone where information can change quickly or be unreliable. The latest page updates may not reflect the most up-to-date information. Please refer to your local weather service or media outlets for the latest weather information pertaining to a specific location. |
Senyar's remnants moved over Malaysia and emerged back into the South China Sea on 28 November, after which the Japan Meteorological Agency began tracking it. The Joint Typhoon Warning Center also resumed advisories, stating that it had moved into the Western Pacific basin and regenerated.
Senyar caused heavy flooding and landslides across central and southern Thailand (especially Songkhla province), peninsular Malaysia, and Sumatra, Indonesia, killing over 490 people in the three countries. Indonesia alone reported 256 fatalities, 113 injuries and 280 missing. Thailand was also hit hard, with 239 fatalities across 10 provinces, including approximately 200 in Songkhla alone.
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Meteorological history
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Tropical depression (≤38 mph, ≤62 km/h)
Tropical storm (39–73 mph, 63–118 km/h)
Category 1 (74–95 mph, 119–153 km/h)
Category 2 (96–110 mph, 154–177 km/h)
Category 3 (111–129 mph, 178–208 km/h)
Category 4 (130–156 mph, 209–251 km/h)
Category 5 (≥157 mph, ≥252 km/h)
Unknown
Tropical storm (39–73 mph, 63–118 km/h)
Category 1 (74–95 mph, 119–153 km/h)
Category 2 (96–110 mph, 154–177 km/h)
Category 3 (111–129 mph, 178–208 km/h)
Category 4 (130–156 mph, 209–251 km/h)
Category 5 (≥157 mph, ≥252 km/h)
Unknown
Storm type
Extratropical cyclone, remnant low, tropical disturbance, or monsoon depressionOn 20 November, the India Meteorological Department (IMD) began to track an upper-air circulation in the Strait of Malacca.[1] On 22 November, a low-pressure area formed as a result of the circulation.[2] On 25 November, the low-pressure area intensified into a depression as it moved westwards.[3] The Joint Typhoon Warning Center (JTWC) also issued a tropical cyclone formation alert and designated the system as Tropical Cyclone 04B as it exhibited a partially exposed but well-defined low-level circulation area.[4] Later that day, the depression intensified into a deep depression as convection developed and persisted. However, further development was limited due to its proximity to land.[5][6] The system made landfall on northeastern Sumatra near midnight and began deteriorating due to increasing wind shear.[7] Early on 26 November, the IMD named the system Senyar.[8] The system tracked along the coast of Sumatra and weakened, with a small low-level circulation center.[9] On 27 November, Senyar weakened into a deep depression as it moved east.[10] It then further weakened into a depression after re-emerging over the Strait of Malacca later that day.[11] The IMD later issued its final advisory on the system as it weakened into a low-pressure area.[12] The Japan Meteorological Agency (JMA) mentioned it as a tropical depression after it crossed 100ºE.[13] It then made a second landfall in Selangor, moving over peninsular Malaysia.[14] Senyar continued eastward slowly through that evening, maintaing tropical depression intensity.[15] The JMA continued tracking Senyar as a tropical depression on 28 November as it emerged into the South China Sea while being steered northeastward.[16] The JTWC also began monitoring it again as 34W, stating that it was a regeneration of Senyar.[17]
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Preparations
The IMD issued a rainfall warning for the Andaman and Nicobar Islands, Tamil Nadu, Puducherry, Kerala and Andhra Pradesh from 25 November to 1 December. Wind warnings for gusts of 55–75 km/h (34–47 mph) were also issued for coastal areas of the Andaman Sea and southeastern Bay of Bengal. The IMD said that the depression was expected to bring minor impacts to these areas, such as slight damage to homes and horticulture.[18]
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Impact
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Thailand
Flooding in Thailand affected 3.6 million others in 1.2 million homes, and caused flooding in 20 provinces, mainly in the country's south.[19][20] At least 239 deaths were reported in the country, including approximately 200 in Songkhla province,[21] 19 in Phra Nakhon Si Ayutthaya province, 6 in Nakhon Si Thammarat province, 3 each in Pattani, Sing Buri and Suphan Buri provinces, 2 in Phatthalung province and 1 each in Phitsanulok, Nonthaburi and Pathum Thani provinces.[20]
As of 28 November, flooding in Songkhla province destroyed two homes and damaged 1,074 others, along with 228 roads, 12 bridges, 41 schools and 38 temples.[21] The worst effects of the flooding were seen in Hat Yai, due to its geography and limited water drainage. The city recorded its heaviest rainfall in at least 300 years; 335 millimetres (13.2 in) in a single day.[when?] Floodwaters there reached up to 2 m (6.6 ft) deep, stranding 7,000 foreign tourists as a result.[22][23][24] Flood damage across Thailand was estimated at 11.8–23.6 billion baht (US$366–732 million).[25]
Malaysia
Flooding also occurred in Peninsular Malaysia, killing two people in Kelantan[26][27] and forcing 21,000 others to evacuate across 10 states in the country.[28]
Indonesia
Flash floods in Padangsidempuan caused by the cyclone
A bridge damaged by flooding in North Tapanuli Regency
As Senyar traversed through the Strait of Malacca and intensified into a cyclonic storm, it also brought flooding to the Indonesian island of Sumatra. At least 134 people were killed by flooding and landslides in North Sumatra,[29] including 47 deaths and 51 missing in Central Tapanuli Regency,[30] 33 deaths and 56 missing in Sibolga,[31] 32 in South Tapanuli Regency,[32] 11 in North Tapanuli Regency,[33] 6 deaths and 11 missing in Humbang Hasundutan Regency,[34][35] 2 in Pakpak Bharat Regency[36] and 1 each in Langkat Regency,[37] Nias[38] and Padangsidimpuan.[39] The floods also left more than 15,000 affected in the province.[40][41] In South Tapanuli Regency, 19 died in Batang Toru District[42] 5 in Angkola Sangkunur District[43] and 2 more in Sipirok and West Angkola Districts.[44] One South Tapanuli resident reported that "dozens" of bodies of flood victims were stored at a makeshift morgue in a community center.[45] A landslide in Angkola Sangkunur District left 20 people missing in two villages.[43] An additional 113 people were injured in the regency.[42] In North Tapanuli Regency, flooding and landslides affected 53 communities[46] and left 39 people missing, including 29 in the village of Sibalanga in Adian Koting District[47] and 10 more in Parmonangan District.[33] Floodwaters in Langkat Regency reached up to 1.6 m (5.2 ft) in some areas.[37]
In Aceh, 35 people were killed and 25 were left missing,[48] including 15 from landslides in Central Aceh Regency,[49] 11 deaths and 13 missing in Bener Meriah Regency[50] and 2 each in North Aceh Regency and Southeast Aceh Regency,[51] while more than 18,200 people were affected by flooding in East Aceh Regency.[52] An estimated 46,000 homes in the province were damaged.[53] In West Sumatra, 87 people were killed; 74 fatalities and 78 missing were reported in Agam Regency,[54][38] a landslide caused seven deaths in Padang Panjang,[55] eight more were killed by flooding in Padang,[56] and a landslide killed a teenager in West Pasaman Regency.[57]
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Aftermath
Thailand
Songkhla province was declared a disaster zone (an equivalent to a state of emergency).[58] The Royal Thai Navy deployed 14 boats as well as the aircraft carrier HTMS Chakri Naruebet in relief operations.[59][60] The floods also caused some events of the upcoming 2025 SEA Games originally to be held in Songkhla to be moved to Bangkok and Chonburi.[61]
See also
References
External links
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