Space Weather Nowcasts Daily condition Date: 19 August 2021; 10:44 UT Summary of Space Weather. Sunspot AR2858 is cracking with minor B class solar flares. The geomagnetic conditions are quiet at all levels. The solar wind speed is declining. Space Weather parameters / observations; Sunspot Number: 16 10.7cm Flux: 75 sfu Solar wind speed: 360.1 km.s-1 Solar wind density: 6.1 protons.cm3 Kp: 1 Bz: -4.5 nT (South) Bt: 4.9 nT Dst: 2 nT