Solar & space-weather phenomenon · Solar source
Active Regions
Areas of strong, complex magnetic field on the Sun, usually marked by sunspots, where magnetic energy builds up and is released. Active regions are the launch sites of the largest solar flares and coronal mass ejections, and are watched closely for space-weather forecasting.
Highlights
- ›The magnetic launch sites of flares and CMEs
Drivers, environments & assets
Across space weather
Knowledge connections
- Associated withSunspots
- Associated withThe Sun
- Associated withSunspots
- Associated withSolar Flare
- Associated withCoronal Mass Ejection (CME)
- Associated withSolar Orbiter
- Associated withPlage
- Associated withCoronal Loop
Sources
The primary and reference sources this topic draws on.
- NOAA SWPCNOAA Space Weather Prediction Center
Space-weather forecasts and alerts: aurora (OVATION), the Kp index, and the G1–G5 geomagnetic storm scale.