Tag: hf_radio_communication

Solar Flare Triggers Moderate Radio Blackout on Earth's Sunlit Side

10 Oct 2026 11:30 a.m. · Source: NOAA

An M6.4 solar flare peaked at 1510 UTC on October 10, 2026, prompting NOAA's R2 moderate radio blackout alert for high frequency communications on the sunlit side of Earth.

Science & Technology Weather Environment Astronomy and Space General Weather NOAA solar flare X-ray event radio blackout space weather HF radio communication Space Weather Prediction Center Solar Flares
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