June 22, 2011 - NOAA forecasts, supported by guidance from the WSA-Enlil solar wind model, are projecting CME arrival mid to late day UTC on June 23. The CME does appear to be clearly Earth-directed, so some effect is almost certain. The bulk of the disturbance is still expected on June 24, with G1 (Minor) and isolated G2 (Moderate) levels of Geomagnetic Storming expected for the duration of the event. High latitude aurora watchers should be on alert Thursday and Friday night.
http://www.swpc.noaa.gov/