Selebtek.voice.com – Deputy for Meteorology, Meteorology, Climatology and Geophysics Agency (BMKG), Guswanto appealed to the public to be aware of the possibility of potential rain that could cause hydrometeorological disasters such as floodlandslides, flash floods.
Although most parts of Indonesia are currently entering the dry season, the BMKG predicts rainfall with light to heavy intensity will still have the potential to flush most of the country’s territory over the next week (16-23 July 2022).
Regarding the dry season, Guswanto also warned the public to be aware of the effects of drought.
“Save and use water wisely. So that we can deal with the effects of drought due to drought together,” he said.
The BMKG explained the cause of the light to heavy rain intensity in the dry season this year. The reason for this is that several significant global-regional-scale atmospheric dynamics phenomena are still active.
Guswanto explained that the phenomenon of atmospheric dynamics on a global-regional scale was quite significant, including the La Nina phenomenon which in July was identified as still quite active with a weak category.
“This condition still affects the general supply of water vapor in Indonesia’s atmosphere,” said Guswanto.
Besides La Nina, said Guswanto, the Dipole Mode phenomenon in the Indian Ocean region currently also shows an index that is quite influential in triggering an increase in rainfall, especially in the western part of Indonesia.
Meanwhile on a regional scale, there are several atmospheric wave phenomena that actively increase convective activity and the formation of rain clouds, namely; MJO (Madden Jullian Oscillation), Kelvin wave, and Rossby wave that occur in the same period.
“The pattern of wind bends and meeting areas as well as slowing wind speed (convergence) around southern Sumatra and western Java are also able to increase the potential for rain cloud formation in the region supported by positive sea surface temperature anomalies which can increase the potential for water vapor in the atmosphere. , he said.
Although currently most of Indonesia’s territory has entered the dry season, due to these atmospheric phenomena it triggers the occurrence of weather dynamics which has an impact on raining in most parts of Indonesia.
The potential for rain for the next week (16-23 July 2022) with moderate to heavy intensity may occur in several areas of West Java, Central Java, Central Kalimantan, North Sulawesi, Central Sulawesi, North Maluku, Maluku, West Papua, and Papua.
Light to moderate intensity rains can still occur in several areas such as Aceh, Jambi, South Sumatra, Bangka Belitung Islands, Lampung, Banten, DKI Jakarta, DI Yogyakarta, East Java, West Kalimantan, North Kalimantan, East Kalimantan, South Kalimantan, Gorontalo, West Sulawesi, Southeast Sulawesi, South Sulawesi.
BMKG predicts the Jabodetabek area will still have the potential for moderate to heavy rain, which can be accompanied by lightning/lightning and strong winds during the afternoon, especially in the west, east and south areas.