Thursday, February 17, 2011
Active Geomagnetic Activity Due at Any Time
The first interplanetary shock, driven by the CME from Sunday, is expected any time. Soon thereafter, the shock from Monday evening's R3/CME is due. Look for G1-G2 (and maybe periods of G3 if the following shock compresses and enhances the CME magnetic field). Geomagnetic storming should persist 24- 48 hours. Back at the Sun, Region 1158 is still hot and fast-growing, Region 1161 is producing small flares.