Tropical Atmospheric Waves Emerged in West Aceh, BMKG Asked to Be Aware of Hydro-Meteorological Disasters

Residents cross the SDN Alue Lhok building, Pante Ceureumen District, West Aceh Regency, which was damaged and destroyed by a flash flood, Sunday, November 30, 2025. (ANTARA-HO-Warga-Tatam Likha)

JAKARTA - The Meteorology, Climatology and Geophysics Agency (BMKG) urges people in the south-west region of Aceh to be aware of the potential for hydrometeorological disasters over the next two days.

Praktirawan of the Meulaboh-Nagan Raya Aceh BMKG Station, Rijal Sains Fikri said the disaster is expected to cause heavy rain accompanied by strong winds.

"Because of the atmospheric dynamics, it affects the weather conditions in the south-west of Aceh, namely the active Madden Julian Oscillation or MJO in the Aceh Province area," he told Antara, Friday,

The Madden Julian Oscillation (MJO) is a tropical atmospheric wave phenomenon that moves east along the equator, crossing the Indian Ocean to the Pacific in a 30-60 day cycle.

MJO brings wet (increased rain) and dry phases, significantly affecting the weather in Indonesia, especially when passing through the maritime continent (phase 3-5). When the active (wet) phase of MJO passes, there is a drastic increase in rainfall and the potential for hydrometeorological disasters such as floods and landslides.

Rijal Science Fikri said the potential for hydrometeorological disasters in this region over the next two days was also caused by the convergence (accumulation of air mass) in the south-west of Aceh which caused the convective cloud air period to be abundant in the Aceh Province area.

Due to this phenomenon, it also causes the potential for strong winds in the afternoon to evening accompanied by rain.

He said that the potential for rain and strong winds is still expected to occur in the western and southern Aceh areas until Saturday or Sunday, February 21-22.

BMKG urges the public to increase vigilance against the potential for extreme weather that can be accompanied by strong winds, because this disaster can cause trees to fall, and the potential for landslides for people living in disaster-prone areas.

"As for the forecast of high waves in the western and southern Aceh region, throughout Friday it is still normal with a height ranging from one to two meters," said Rijal Science Fikri.