Jakarta, domclub Indonesia
–
Some parts of Indonesia are currently in the marked transitional season
heavy rain
accompanied by lightning and strong winds in short duration.
“Entering the third decades of September, parts of Indonesia experienced a transitional period of weather marked by heavy rain accompanied by lightning and strong winds in short duration,” wrote the Meteorology, Climatology and Geophysics Agency (BMKG) in the weekly weather prospects for the period 23-29 September 2025.
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This is influenced by the dynamics of global, regional and local atmospheric dynamics such as Dipole Mode Index (DMI) of negative value that increases the growth of clouds in the western region of Indonesia.
Then it is also influenced by warm sea level temperatures in several waters that trigger convective activity.
Rossby Equatorial and Kelvin waves are also still active in several regions.In addition, there is also a negative outgoing longwave radiation (OLR) that shows the tendency of rain cloud growth.
In addition there are also 92W cyclone seeds that are predicted to be in the northern Philippine sea of Papua with a maximum wind speed of 20 knots and 1004 HPA pressure.However, the potential of these cyclone seedlings increases so tropical cyclones are called low.
Then, there is also a tropical cyclone Ragasa is estimated to be in the Philippines with a maximum wind speed of 110 knots and a pressure of 905 HPA.
“Both of them formed convergence and confluence areas that triggered medium-pouring rain in Kalimantan, North Maluku and Papua,” BMKG said.
Over the next week, generally Indonesia will experience cloudy weather until light rain.However, there are also some areas that have the potential to be washed down by moderate or heavy rain.
September 23-25 2025
Potential medium rain
– Aceh
– North Sumatra
– West Sumatra
– Riau
– Bengkulu
– Banten
– West Java
– East Java
– West Kalimantan
– Central Kalimantan
– East Kalimantan
– North Kalimantan
– South Kalimantan
– West Sulawesi
– South Sulawesi
– Southeast Sulawesi
– North Maluku
– Maluku
– Southwest Papua
– West Papua
– Central Papua
– Papua Mountains
– Papua
– South Papua
Potential heavy rain: very heavy:
– North Sumatra
– North Maluku
– Maluku
– Papua Mountains
– South Papua
Strong winds:
– Aceh
– East Nusa Tenggara
– South Sulawesi
– Maluku
– Central Papua
– South Papua
September 26-29
Potential medium rain
– Aceh
– North Sumatra
– West Sumatra
– Riau
– South Sumatra
– Bengkulu
– West Java
– Central Java
– East Java
– West Kalimantan
– Central Kalimantan
– East Kalimantan
– North Kalimantan
– West Sulawesi
– South Sulawesi
– Southeast Sulawesi
– North Maluku
– Maluku
– Southwest Papua
– West Papua
– Central Papua
– Papua Mountains
– Papua
– South Papua
The potential for heavy rain
– Central Papua
– Papua Mountains
Strong winds
– East Java
– East Nusa Tenggara
– South Sulawesi
(lom/fea)
[Gambas: domclub video]
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