Overview
- NOAA reported an S4 radiation storm and G4 geomagnetic activity following an X1.9 solar flare and fast coronal mass ejection.
- Northern and southern lights were seen well outside polar regions, from Spain and the southern UK to New Mexico, Southern California and Australia’s east coast.
- With a forecast Kp index near 4, agencies said Wednesday and Thursday nights could still bring displays across parts of Canada, the UK and up to 13–16 U.S. states.
- Space weather officials warned of possible interference to satellites, GPS and HF radio, though no widespread infrastructure damage has been confirmed.
- The spectacle drew large crowds and a rescue response at Cape Schanck in Victoria, as experts reminded viewers that cameras often capture stronger auroral colors than the naked eye.