Space Weather Nowcasts Daily condition Date: 21 September 2021; 09:45 UT Summary of Space Weather. The new sunspot AR2871 is cracking with C-class solar flares. The geomagnetic conditions are quiet. The solar wind speed has slightly increased. Space Weather parameters / observations; Sunspot Number: 51 10.7cm Flux: 80 sfu Solar wind speed: 315.4 km.s-1 Solar wind density: 20.6 protons.cm3 Kp: 1 Bz: 0.5 nT (North) Bt: 4.4 nT Dst: 4 nT