Space Weather Nowcasts Daily condition Date: 20 August 2021; 23:45 UT Summary of Space Weather. Sunspots AR2857 and AR2858 are small and pose no threats for strong solar flares. The geomagnetic conditions are quiet at all levels. The solar wind speed is declining. Space Weather parameters / observations; Sunspot Number: 25 10.7cm Flux: 75 sfu Solar wind speed: 306.3 km.s-1 Solar wind density: 6.1 protons.cm3 Kp: 1 Bz: 5.1 nT (North) Bt: 6.8 nT Dst: -13 nT