The Sun Erupts a Giant Flare, But Indonesia Remains 'Immune' to Its Impact!

JAKARTA - The Meteorology, Climatology, and Geophysics Agency (BMKG) confirmed that the strong geomagnetic storm that occurred globally on November 12–14, 2025, will not have a significant impact on infrastructure in Indonesia.

The Head of the BMKG's Potential Geophysical Working Team, Syirojudin, said the phenomenon was triggered by very high solar activity in the form of an X5.1-class solar flare, one of the strongest categories on the space weather observation scale.

"This event triggered a high-speed ejection of plasma and magnetic fields, or Coronal Mass Ejection (CME), that headed towards Earth. Based on monitoring by the NOAA Space Weather Prediction Center (SWPC), the geomagnetic storm reached the G4 level, or severe category," Syirojudin said in Jakarta, Antara, Thursday, November 13.

Based on observations at several BMKG magnetic observatories, such as in Tondano, Tuntungan, and Serang, geomagnetic activity was detected early on November 12 and lasted for three days.

The Meteorology, Climatology, and Geophysics Agency (BMKG) confirmed that the maximum K index value indicates severe storm conditions, but the impact on Indonesia is relatively minor.

According to Syirojudin, Indonesia's geographical location near the equator provides natural protection from the most extreme effects of geomagnetic storms.

"The equatorial region has a strong magnetospheric belt, called the Equatorial Electrojet, which acts as a shield against high-energy particles," he said.

However, Syirojudin warned of the potential for minor to moderate disruptions to satellite communication and GPS-based navigation systems, as well as possible temporary disruptions to high-frequency (HF) radio communications in Indonesia.

The BMKG recommends intensive monitoring of changes in Earth's magnetic activity through the K and A indices in real time. Furthermore, air and sea transportation sectors that rely on GPS systems are asked to prepare backup communication protocols.

"There is no reason to panic. Magnetospheric protection makes the threat to daily life and the electricity grid in Indonesia very small," Syirojudin said.