X4.2 solar flare sparks HF radio blackouts across Africa and Europe; ISRO warns of ongoing risk
An impulsive X4.2 solar flare from a large active region produced strong HF radio blackouts across Africa and Europe, disrupting shortwave and some satellite-linked services. India's ISRO has issued warnings of continued radio‑blackout risk as the oversized sunspot continues to emit energetic bursts toward Earth.