The Sun has unleashed two powerful X-class solar flares within a seven-hour span, disrupting radio communications on Earth and signaling a sharp increase in solar activity after nearly 80 days of relative quiet.
The first eruption, classified as X2.4, occurred at 10:07 p.m. Brasília time on Thursday, April 23, 2026. The second, an X2.5 flare, followed at 5:14 a.m. Brasília time on Friday, April 24, 2026. Both events originated from sunspot group AR4419, located on the western slope of the Sun.
According to Spaceweather.com, the radiation from these flares caused immediate shortwave radio blackouts on the sunlit side of Earth. The first impact affected regions over the Pacific Ocean and Australia, while the second disrupted communications across East Asia, leading to temporary signal instability.
Prior to these X-class events, the same active region had produced several M-class flares on April 23. Scientists also observed a “sympathetic eruption,” where two separate areas on opposite sides of the Sun released energy nearly simultaneously, indicating significant magnetic instability.
These eruptions mark the strongest solar flares observed in 78 days and underscore the growing intensity of Solar Cycle 25, which is expected to reach its peak around 2026. The events highlight the ongoing need for space weather monitoring to protect satellite operations, GPS systems, and global communication networks.
