Overview
- An X5.1 solar flare erupted from Active Region 4274 at 10:04 UTC on November 11, producing a fast CME indicated by Type II emissions and driving S1-level radiation storm conditions.
- NOAA’s Space Weather Prediction Center projects G2 storming by late November 11 increasing to G3 on November 12 as successive CMEs reach Earth and elevate solar wind speeds likely beyond 700 km/s.
- The X5.1 follows X1.7 and X1.2 flares on November 9–10 that launched earlier CMEs, with forecasters continuing analysis of timing and potential interactions.
- High-frequency radio was significantly disrupted on the sunlit side, with reports of severe impacts over Africa and Europe, and further degradations were forecast over Africa, parts of the Middle East, and the Indian Ocean.
- AR4274 retains a complex beta‑gamma‑delta magnetic configuration, and SWPC assigns elevated probabilities for additional flares, including a 25% chance of further X-class events through November 12.