Space Weather Nowcasts Daily condition Date: 31 July 2021; 10:45 UT Summary of Space Weather. The sun is spotless. The geomagnetic conditions are quiet. The solar wind speed is declining. Space Weather parameters / observations; Sunspot Number: 0 10.7cm Flux: 76 sfu Solar wind speed: 451.5 km.s-1 Solar wind density: 6.4 protons.cm3 Kp: 2 Bz: -0.4 nT (South) Bt: 2.9 nT Dst: 3 nT