G2 Watch issued for 4 August; G1 Watch issued for 5 August

A coronal hole high speed stream, originating from a recurrent, positive polarity coronal hole seen in the SDO/AIA 193 image above, is likely to cause geomagnetic storming at the G2 level on 4 August 2017, and at the G1 level on 5 August. Stay tuned for additional updates.