Overview
- Forecasters expect elevated activity from Tuesday night into Wednesday, with Kp reaching around 5 and G1 likely and a chance of brief G2-level bursts.
- NOAA viewlines put the aurora within range of up to 14 U.S. states from Alaska to the northern tier, including parts of Washington, Idaho, Montana, the Dakotas, Minnesota, Wisconsin, Michigan, Iowa, Wyoming, New York, Vermont, New Hampshire and Maine.
- Best viewing windows are typically 10 p.m. to 2 a.m. local time under clear, dark skies with an unobstructed view to the north, away from urban light pollution.
- The UK Met Office says visible aurora is possible across Scotland with low-confidence glimpses as far south as northern England or Northern Ireland on Tuesday night into Wednesday.
- Outcome depends on real-time solar-wind and magnetic readings, and analysts note lower confidence after recent complex CME activity, so observers should monitor NOAA’s 30‑minute aurora products and live Kp/Bz data.