2026-07-21
Historical snapshot — data recorded on 2026-08-12, not live
Space weather — 2026-07-21
Daily Statistics Brief
On 2026-07-21, the planetary Kp index peaked at 2.1 (G0 quiet). solar wind speed reached 392 km/s and Bz dipped to -4 nT. Auroral hemispheric power was 21 GW. The Dst index reached -31 nT.
Aurora Oval — Peak Kp 2.1
Quiet — aurora near polar regions only.
Auroral power: 21 GW
Kp max2.1Kp now2.1Wind392 km/sBz-4 nTAurora21 GWDst-31 nTFlare—NEAs0