HF Activity Group Raw data courtesy SWPC/NOAA/NASA/GOES R-Radio Blackouts/S-Solar Radiation/G-Geomagnetic Storm NOAA GOES X-RAY FLUX -- Latest 6 minutes X-Ray Flare Chart -- more NOAA SOLAR FORECAST TODAY LIVE AI Predictions for HF propBased on valid science for your entertainment K-index, A-index, Solar Flux, Solar Wind Interplanetary Magnetic fields (IMF) Max Usable Freq map de KC2G Need some Help for this page?Current sunspot Number Transform your Ham Radio Game! Solar Comparator - Grab the arrows in the middle Slider - move left/right to compare