Space Weather Nowcasts Daily condition Date: 16 August 2021; 10:44 UT Summary of Space Weather. Sunspot AR2857 is growing but does not pose a threat for stromg solar flares. The geomagnetic conditions are quiet at all levels. The solar wind speed is elevated. Space Weather parameters / observations; Sunspot Number: 23 10.7cm Flux: 75 sfu Solar wind speed: 446.0 km.s-1 Solar wind density: 4.4 protons.cm3 Kp: 1 Bz: -0.0 nT (South) Bt: 4.5 nT Dst: -5 nT