Space Weather Nowcasts Daily condition Date: 19 April 2021; 09:45 UT Summary of Space Weather. Sunspot AR2816 is cracking with minor B-Class solar flares. The geomagnetic conditions are quiet.The solar wind speed is moderately high. Space Weather parameters / observations; Sunspot Number: 15 10.7cm Flux: 78 sfu Solar wind speed: 624.4 km.s-1 Solar wind density: 5.9 protons.cm3 Kp: 3 Bz: 1.6 nT (North) Bt: 4.5 nT Dst: -24 nT