Geomagnetic Storm
A temporary disturbance of Earth's magnetosphere, driven by the arrival of a fast solar wind or a coronal mass ejection. Strong storms can disrupt satellites, power grids, and navigation, and drive bright auroras.
Imagery
A wispy, multi-colored aurora created by a geomagnetic storm
iss074e0150531 (Jan. 19, 2026) --- A wispy, multi-colored aurora—created by a geomagnetic storm and producing rare colors such as deep red and purple—is pictured above the Atlantic Ocean. The International Space Station…
2026
NASA/Johnson · NASA media (public domain)
Environment & effects
Knowledge connections
- Associated withCoronal Mass Ejection (CME)
- AffectsEarth
- Observed byDSCOVR (Deep Space Climate Observatory)
- Observed bySpace Weather Prediction Center (SWPC)
- Associated withCoronal Mass Ejection (CME)
- Associated withKp Index
- Associated withDst Index
- Associated withNOAA G-Scale (Geomagnetic Storms)
- Associated withAurora
- Associated withSpacecraft Charging
- Associated withKp Index
- Associated withDst Index
- Associated withNOAA G-Scale (Geomagnetic Storms)
- Associated withSatellites
- Associated withPower Grids
- Associated withNOAA Space Weather Prediction Center
Sources
The primary and reference sources this topic draws on.
- NOAA Solar CalculatorNOAA Global Monitoring Laboratory
Public-domain solar-position geometry: sunrise, sunset, solar noon, twilight, declination, and the equation of time.
Public domain (US Government work).
- NASANational Aeronautics and Space Administration
Mission data, planetary science, space telescopes, and public-domain imagery.
Most NASA-produced imagery is in the public domain; individual items are checked for usage terms before publication.