From Spaceweather.com:
CME IMPACT: As expected, a coronal mass ejection (CME) hit Earth's magnetic field on March 15th at approximately 0500 UT. The impact was weak, but conditions for geomagnetic storming could develop as Earth passes through the CME's wake. High latitude sky watchers should be alert for auroras on March 15th and 16th.
and
A magnetic filament snaking around sunspot AR1692 erupted on March 15th at about 0600 UT. The slow explosion, which took hours to unfold, produced an M1-class solar flare and a bright CME. SOHO (the Solar and Heliospheric Observatory) captured the CME just as it was leaving the sun. The central location of the explosion combined with multiple views of the CME from SOHO and NASA's twin STEREO spacecraft suggest that the cloud is heading almost directly toward Earth. If so, an impact would likely occur in 2 to 3 days, setting the stage for weekend auroras.
Note that these are two separate events, the second CME is not expected until about the 17th or 18th.
The current WWV Propagation Report:
Solar-terrestrial indices for 14 March follow.
Solar flux 123 and estimated planetary A-index 5.
The estimated planetary K-index at 0900 UTC on 15 March was 2.
Space weather for the past 24 hours has been minor.
Radio blackouts reaching the R1 level occurred.
Space weather for the next 24 hours is predicted to be minor.
Geomagnetic storms reaching the G1 level are likely.
Topic: CMEs and Possible Auroral Conditions (Read 945 times)
