GEOMAGNETIC STORM WATCH (G2): Geomagnetic storms are possible on Aug. 1st when a CME is expected to hit Earth's magnetic field. Minor G1-class storms are likely with a chance of escalating to category G2. The CME was hurled almost directly toward Earth by the eruption of a magnetic filament in the sun's northern hemisphere on July 28th.


https://www.spaceweather.com/