Overview
- Vivid auroras were reported across dozens of U.S. states, with sightings reaching as far south as Florida, Texas and Alabama, and widespread displays also observed in the U.K.
- NOAA’s Space Weather Prediction Center confirmed G4-level conditions overnight after two CMEs arrived, noting magnetic strengths about eight times normal and continued favorable conditions for activity.
- The British Geological Survey said U.K. activity hit G5 overnight and produced the largest induced geoelectric field recorded there in more than 20 years.
- Forecasters expect a third CME around noon ET described as the final and most energetic of the sequence, with NOAA’s aurora view line covering roughly 18–21 states depending on conditions.
- Risks include power-grid voltage control issues, satellite and GPS disruptions, and HF radio impacts, with an R3 blackout reported over Africa and Europe after an X5.1 flare and at least one launch postponement reported by NASA for Blue Origin.