Overview
- NOAA’s Space Weather Prediction Center confirmed a G4 (severe) geomagnetic storm after multiple CME arrivals between Nov. 11 and 13.
- Vivid auroras were seen far from the poles, including in Texas, Florida and Kansas in the U.S., across northern Mexico, and in parts of South America and Europe.
- Agencies cited intermittent GPS inaccuracies, radio and satellite interference, and power‑grid voltage concerns, while emphasizing no direct health risk to the public.
- The disturbance traces to active region AR4274, which produced an Earth‑directed X5.1 solar flare and successive coronal mass ejections.
- Forecasters said a third, possibly stronger CME was still en route as of Wednesday, keeping conditions unsettled and prompting continued monitoring, with some operations such as Blue Origin’s New Glenn launch postponed.