2020-09-28 · historical storm
Historical snapshot — data recorded on 2026-08-12, not live
Space weather — 2020-09-28
Daily Statistics Brief
On 2020-09-28, the planetary Kp index peaked at 5.3 (G2 moderate). solar wind speed reached 550 km/s and Bz dipped to -9 nT. Auroral hemispheric power was 209 GW. The Dst index reached -50 nT.
Aurora Oval — Peak Kp 5.3
Active storm — aurora oval expanded equatorward.
Auroral power: 209 GW
Kp max5.3Kp now5.3Wind550 km/sBz-9 nTAurora209 GWDst-50 nTFlare—NEAs0