Also, the explosion propelled yet another CME toward Earth: forecast track. The cloud is expected to hit our planet's magnetosphere on March 12th around 1800 UT, possibly sparking a new round of geomagnetic storms. A CME from an earlier explosion will arrive much sooner, however; a CME from sunspot AR1429 is nearing Earth. According to analysts at the Goddard Space Weather Lab, the cloud will arrive on March 11th at 0649 UT (+/- 7 hr). NOAA forecasters say the odds of a strong geomagnetic storm at that time is 50%.