Tag: sunlit_side_of_earth

Moderate X-ray Flare Triggers Brief HF Radio Blackout

8 Oct 2026 12:05 p.m. · Source: NOAA

An M6.7 solar X-ray event peaked at 1548 UTC on October 8, 2026, prompting NOAA's R2 moderate radio blackout alert for the sunlit side of Earth.

Science & Technology Weather Astronomy and Space General Weather Environment NOAA space weather X-ray event radio blackout HF radio communication sunlit side of Earth R2 Moderate Solar Flares