2026-06-21
Historical snapshot — data recorded on 2026-08-12, not live
Space weather — 2026-06-21
Daily Statistics Brief
On 2026-06-21, the planetary Kp index peaked at 8.8 (G5 extreme). solar wind speed reached 928 km/s and Bz dipped to -23 nT. Auroral hemispheric power was 314 GW. The Dst index reached -132 nT.
Aurora Oval — Peak Kp 8.8
Severe storm — aurora visible at mid-latitudes.
Auroral power: 314 GW
Kp max8.8Kp now8.8Wind928 km/sBz-23 nTAurora314 GWDst-132 nTFlare—NEAs0