Geomagnetic Monitoring
Track geomagnetic storm conditions with near-real-time magnetic field indices, auroral electrojet activity, and recent disturbance events from NASA DONKI. This monitoring surface focuses on how solar activity translates into geomagnetic response around Earth.
Current Hp30
3
Quiet24h maximum
3
QuietRecent trend (last 8 readings)
Latest minute
56
nT (nanotesla)
24h peak
340
nT (nanotesla)
Hourly series (last 8 hours)
2026-09-21T00:33:00-IPS-001
2026-09-17T15:10:00-IPS-001
2026-09-17T01:24:00-IPS-001
2026-09-15T23:36:00-HSS-001
2026-09-15T11:28:00-IPS-001
2026-09-14T09:24:00-IPS-001
GFZ Hp30 provides the fastest planetary-activity signal, updated every 30 minutes. Values of 5+ correspond to geomagnetic storm conditions (G1+). This is near-real-time data — much faster than the traditional 3-hour Kp index.
Kyoto AE adds auroral zone context but with a clearly marked lag. The AE index measures electrical currents at ~65–70° latitude. Higher values indicate stronger substorm activity and more visible aurora.
The two indices are shown together by design: Hp30 for fast response, AE for auroral context. Together they give a more complete picture of geomagnetic conditions than either alone.
Snapshot generated: Sep 22, 1:29 AM UTC