Space Weather Nowcasts Daily condition Date: 28 August 2021; 09:47 UT Summary of Space Weather. Sunspots AR2859 and AR2860 are both cracking with C-class solar flares. The geomagnetic conditions are unsettled. The solar wind speed has declined Space Weather parameters / observations; Sunspot Number: 73 10.7cm Flux: 90 sfu Solar wind speed: 369.3 km.s-1 Solar wind density: 23.4 protons.cm3 Kp: 4 Bz: 2.8 nT (North) Bt: 6.4 nT Dst: -32 nT