Jakarta –
Heavy rain still has the potential to be present in the Greater Jakarta area and a number of other areas outside of Java, Monday, July 7, 2025. The potential for raining is evenly distributed, and in some regions accompanied by lightning.
The Climatology and Geophysics Meteorology Agency (BMKG) predicts that the potential for rain today is in the area around Jakarta, Regency and City of Bogor, and Depok City. While the Bekasi and Tangerang areas are estimated to have cloudy weather.
Prediction of heavy rain also applies other regions in Indonesia. Previously, BMKG Public Meteorology Director Andri Ramdhani said, weekly weather forecasts for the period 4-10 July 2025 showed that the potential for heavy rain was still high in various regions.
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In July 4-6, the areas that need to be watched out for include West Sulawesi, Maluku and South Papua for the category of heavy rain standards. While strong winds have the potential to occur in the Riau Islands, Banten, West Java, East Java, Bali, NTB, NTT, and several regions in Sulawesi and Papua.
“On July 7-10, the potential for rain is very heavy even estimated in the mountains, while the Maluku region is still in the standby category. The community must remain vigilant, especially against flash floods, landslides, and daily disruption,” Andri said.
Cloud group cumulonimbus
Researcher of the Climate and Atmospheric Research Center, the National Research and Innovation Agency (BRIN) Erma Yulihastin, said the phenomenon of the Cumulonimbus or Mesoscale Convective Complex (MCC) clouds is the origin of high intensity rain during the weekend in Jabodetabek and other regions in southern Indonesia.
“The MCC cloud cluster activity that continues to expand intensively is formed in the North Java Sea of โโCentral Java-East Java. Causing heavy rain and high waves in the sea,” Erma wrote in a tweet on her X account, Sunday (6/7) night.
In her latest update, Erma said the effect of Vortek’s cyclonic activity in the Indian Ocean has triggered the formation of MCC and Squall Line in Sumatra Persistent and continues to spread to Kalimantan and Java.
“Now it has even spread to Kalimantan,” Erma said via text message on Monday (7/7/2025) morning.
Erma explained, it took 6-9 hours for a collection and row of cumulonimbus clouds that brought the potential for heavy rain to spread to Kalimantan. Or, 12-24 hours to Java. That, too, MCC which has been decorated can be reinforced because it interacts with the temperature of the warm Java Sea.
(rns/rns)