Space Weather Nowcasts Daily condition Date: 03 September 2021; 23:44 UT Summary of Space Weather. Sunspot AR2863 poses a slight threat for C- class solar flares. The geomagnetic conditions are quiet at all levels. The solar wind speed has increased. Space Weather parameters / observations; Sunspot Number: 33 10.7cm Flux: 86 sfu Solar wind speed: 308.4 km.s-1 Solar wind density: 8.9 protons.cm3 Kp: 1 Bz: -0.0 nT (South) Bt: 3.0 nT Dst: -13 nT