BMKG Says New Phenomenon Triggers Extreme Rain Until Start of 2023

TEMPO.CO, JakartaA new phenomenon has emerged that could trigger extreme weather on December 31, 2022 until early next year, the Meteorology, Climatology and Geophysics Agency said (BMKG).

In particular, the appearance of ex-Tropical Cyclone Ellie triggered relatively significant changes from the previous weather forecast, said the head of BMKG Dwikorita Karnawati in an online press conference on Friday.

At first, the weather condition was expected to improve on December 31, she says.

However, the appearance of this phenomenon means that people need to be careful because extreme or even above extreme rainfall intensity can occur, she explained.

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“This change is quite significant that we have to tell the public that the situation is not as good as we predicted yesterday,” she noted.

The emergence of this ex-Tropical Cyclone Ellie in Western Australia, along with other phenomena in the past week, are contributing to the increase in heavy to very heavy rainfall, she said.

These other phenomena include the Asian monsoon, cold snaps, equatorial cross currents, and Madden Julian Oscillation (MJO) along with the Kelvin wave and Rossby wave phenomenon.

Based on this situation, until January 4, 2022, people must pay attention to extreme weather potential for Java in general, especially from December 30, 2022 to January 1, 2023, she noted.

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“For Banten, Jakarta and West Java, in general, extreme weather potential still needs to be watched out for, especially on December 30, 2022, to January 1, 2023,” she noted.

Karnawati expects that Weather Modification Technology (TMC) can reduce the intensity of potential extreme weather so that it is not as severe as the forecast.

Speaking on the occasion, BNPB Emergency Handling Deputy Major General Fajar Setiawan noted that his team plans to organize a weather modification technology operation in several new regions before New Year 2023.

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These regions include Banten, Central Java, East Java, and Bali.

“We expect to carry it out within a day or two. It all depends on BRIN (National Research and Innovation Agency) readiness with the Air Force aircraft,” he elaborated.

The operation carried out by BRIN in West Java and Jakarta within the last few days has been proven to reduce rainfall with extreme potential.


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