Overview
- An energetic, fast-moving coronal mass ejection was observed early on November 11, and NOAA’s Space Weather Prediction Center is evaluating its Earth impact.
- Active watches span November 11–13 with a moderate G2 watch first, a strong G4 potential focused on November 12, and a G3 watch for November 13.
- NOAA notes high confidence that a component of the latest CME is Earth-directed, though the precise arrival window and peak strength remain uncertain until in situ measurements near a million miles out are available.
- A moderate S2 solar radiation storm is in progress following a strong R3-class flare, with recent activity from AR 4274 including reports of an X5 event and an M7.4 flare.
- Officials highlight possible effects on HF radio, satellite operations, GPS precision, and long-distance power systems, while UNAM’s Sciesmex says there is no risk to human health and auroras could reach unusually low U.S. latitudes.