View recent geomagnetic storm events caused by solar wind disturbances. Storms are measured by the Kp index and can produce auroras and affect technology.
Geomagnetic storms are temporary disturbances of Earth's magnetosphere caused by interactions with the solar wind, typically following the arrival of coronal mass ejections (CMEs) or high-speed solar wind streams from coronal holes. Storms are measured using the planetary K-index (Kp), which ranges from 0 (very quiet) to 9 (extremely disturbed). The NOAA G-scale classifies storms from G1 (Minor, Kp=5) through G5 (Extreme, Kp=9). A G1 storm may cause weak power grid fluctuations and minor satellite effects, while a G5 storm can cause widespread power outages, damage to transformers, complete HF radio blackout, and satellite navigation errors lasting days. Geomagnetic storms also produce aurora borealis (Northern Lights) and aurora australis (Southern Lights). During G3+ storms, auroras become visible at mid-latitudes, and during extreme G5 events, they can be seen as far south as Florida and Texas.
| Start Time | Max Kp Index | Classification | Kp Readings | Linked Events | Link |
|---|---|---|---|---|---|
Mar 22, 2026 09:00 6 days ago | 6.67 | G2 - Moderate | 6.67 (NOAA)6 (NOAA)6.67 (NOAA)6.33 (NOAA)6.33 (NOAA) | 1 event(s) | NASA |
Mar 20, 2026 18:00 8 days ago | 7 | G3 - Strong | 5.67 (NOAA)6.67 (NOAA)7 (NOAA)6 (NOAA) | 3 event(s) | NASA |
Mar 13, 2026 21:00 15 days ago | 6 | G2 - Moderate | 5.67 (NOAA)5.67 (NOAA)6 (NOAA) | 2 event(s) | NASA |