Daily Earth and Sun Report 4.23.2021 Solar Wind: speed: 386.6 km/sec density: 6.6 protons/cm^3 X-ray Solar Flares: 6-hr max: C1 24-hr: C3.8 An earth-facing sunspot released yesterday, producing a weakish, C3.8-class solar flare. NOAA forecasters say that G2-class geomagnetic...See more