Overview
- NOAA forecasts a G1 geomagnetic storm for Sunday night, with a low chance of brief G2 enhancements that could widen visibility.
- View lines favor states along the U.S.–Canada border, with likely horizons in Alaska, Washington, Idaho, Montana, Wyoming, the Dakotas, Minnesota, Wisconsin, Michigan, New York and Maine, and possible views in Oregon, Iowa, Vermont and New Hampshire if activity strengthens.
- Forecasters project a Kp index around 4, suggesting brighter auroral motions for those within the view line under dark, clear skies.
- A coronal mass ejection linked to an X4.0 solar flare detected on Nov. 14 may reach Earth and drive the minor storm, following an earlier X5.1 flare this week.
- The Leonid meteor shower peaks overnight Nov. 16–17 with up to about 15 meteors per hour, and NOAA notes only minor, manageable impacts are expected for satellites, radio and power systems.