BMKG Predicts Extreme Weather to Hit North Sulawesi Until 22 February
The Meteorology, Climatology and Geophysics Agency (BMKG) has predicted that extreme weather conditions could potentially strike districts and cities across North Sulawesi until 22 February 2026.
"Be alert to the potential for moderate to heavy rainfall that may be accompanied by lightning and strong winds, as well as increased daily cumulative rainfall," said Astrid Y Lasut, Operational Coordinator at the Sam Ratulangi Meteorological Station in Manado, on Wednesday.
Astrid outlined several phenomena influencing North Sulawesi's weather, including the Madden-Julian Oscillation (MJO), which is predicted to pass through the North Sulawesi region and contribute to rain cloud formation.
Additionally, Kelvin waves and Low Frequency waves are expected to traverse the North Sulawesi region, increasing rainfall potential and lightning activity in several areas.
"Outgoing Longwave Radiation (OLR) values indicate thick cloud cover around the North Sulawesi region, and there is a low-pressure centre to the east of Australia causing wind shear (shearline) in the North Sulawesi region, resulting in the accumulation of air masses," she said.
Meanwhile, sea surface temperature anomaly values ranging from -2 degrees Celsius to +2.5 degrees Celsius in waters surrounding North Sulawesi are adding water vapour mass to the growth process of convective clouds.
Another phenomenon is that the strong local instability index supports the growth of rain clouds accompanied by lightning in a number of areas.
BMKG estimated that 15 districts and cities in North Sulawesi on Wednesday faced the potential for moderate to heavy rainfall that could be accompanied by lightning and strong winds, as well as increased daily cumulative rainfall.
"Be alert to the potential for moderate to heavy rainfall that may be accompanied by lightning and strong winds, as well as increased daily cumulative rainfall," said Astrid Y Lasut, Operational Coordinator at the Sam Ratulangi Meteorological Station in Manado, on Wednesday.
Astrid outlined several phenomena influencing North Sulawesi's weather, including the Madden-Julian Oscillation (MJO), which is predicted to pass through the North Sulawesi region and contribute to rain cloud formation.
Additionally, Kelvin waves and Low Frequency waves are expected to traverse the North Sulawesi region, increasing rainfall potential and lightning activity in several areas.
"Outgoing Longwave Radiation (OLR) values indicate thick cloud cover around the North Sulawesi region, and there is a low-pressure centre to the east of Australia causing wind shear (shearline) in the North Sulawesi region, resulting in the accumulation of air masses," she said.
Meanwhile, sea surface temperature anomaly values ranging from -2 degrees Celsius to +2.5 degrees Celsius in waters surrounding North Sulawesi are adding water vapour mass to the growth process of convective clouds.
Another phenomenon is that the strong local instability index supports the growth of rain clouds accompanied by lightning in a number of areas.
BMKG estimated that 15 districts and cities in North Sulawesi on Wednesday faced the potential for moderate to heavy rainfall that could be accompanied by lightning and strong winds, as well as increased daily cumulative rainfall.