Space Weather Nowcasts Daily condition Date: 31 May 2021; 09:45 UT Summary of Space Weather. Sunpot AR2827 has quadrupled in size. The geomagnetic conditions are quiet at all levels. The solar wind speed is declining. Space Weather parameters / observations; Sunspot Number: 27 10.7cm Flux: 74 sfu Solar wind speed: 478.7 km.s-1 Solar wind density: 5.7 protons.cm3 Kp: 1 Bz: 1.4 nT (North) Bt: 2.4 nT Dst: 1 nT