I am a license amateur radio operator and a web site I check almost daily is www.spaceweather.com. Not only for radio propagation but if the is a geomagnetic storm predicted for the day. Even G1's can wreak havoc on your drone operations, it cuts down on wifi, and gps stability. SOLAR SECTOR BOUNDARY CROSSING: On Aug. 28th, Earth will cross a fold in the heliospheric current sheet. This "solar sector boundary crossing" could disturb our planet's magnetic field and spark auroras at high latitudes. NOAA forecasters estimate a 25% to 30% chance of G1-class geomagnetic storms.