2025-09-15
Historical snapshot — data recorded on 2026-08-12, not live
Space weather — 2025-09-15
Daily Statistics Brief
On 2025-09-15, the planetary Kp index peaked at 5.1 (G2 moderate). solar wind speed reached 706 km/s and Bz dipped to -15 nT. Auroral hemispheric power was 203 GW. The Dst index reached -76 nT.
Aurora Oval — Peak Kp 5.1
Active storm — aurora oval expanded equatorward.
Auroral power: 203 GW
Kp max5.1Kp now5.1Wind706 km/sBz-15 nTAurora203 GWDst-76 nTFlare—NEAs0