Overview
- NOAA issued a G1–G2 geomagnetic storm watch after a coronal mass ejection followed an M3.9 solar flare from sunspot AR4403.
- A NASA model indicates the ejection may only clip Earth’s magnetic field, which would temper storm intensity and aurora reach.
- A high‑speed solar wind stream is expected to arrive with the CME, increasing the chance of aurora at high latitudes.
- NOAA’s aurora viewline shows potential visibility into up to 10 northern U.S. states near Canada, including Alaska and parts of Washington, Idaho, Montana, the Dakotas, Minnesota, Wisconsin, Michigan and Maine.
- A bright waxing gibbous moon could wash out faint displays, so observers should seek dark skies and track NOAA’s 30‑minute aurora forecast for real‑time conditions.