Overview
- Auroras were reported well south of usual latitudes, with sightings from the Upper Midwest to the Mid-Atlantic and as far south as Texas, Alabama, Georgia and northern Florida.
- NOAA’s Space Weather Prediction Center has a rare G4 (severe) watch in effect for Nov. 12 after earlier G2 activity, with a G3 watch posted for Nov. 13 as storm levels remain elevated.
- Multiple X‑class flares, including an X5.1, launched several coronal mass ejections that have arrived or are arriving, driving the ongoing geomagnetic disturbance.
- SWPC cautioned of possible voltage control problems and inadvertent protective relay trips on power grids, along with degraded satellite operations, GPS accuracy and HF radio.
- Forecast confidence continues to hinge on real‑time measurements from L1 observatories, and by early Wednesday widespread auroras were confirmed but no large‑scale infrastructure failures were reported.