Space Weather Nowcasts Daily condition Date: 12 September 2021; 19:45 UT Summary of Space Weather. Big Sunspot AR2866 is starting to decay. The geomagnetic conditions are quiet. The solar wind speed has increased. Space Weather parameters / observations; Sunspot Number: 93 10.7cm Flux: 92 sfu Solar wind speed: 343.3 km.s-1 Solar wind density: 6.1 protons.cm3 Kp: 2 Bz: -5.2 nT (South) Bt: 6.9 nT Dst: 2 nT