The Sun has sent significant M-class solar flares and Coronal Mass Ejections towards Earth each of the last three days and the most recent is bigger and faster than all of them. Today's flare is expected to catch up with the other two and the combined cloud is predicted to hit Earth tomorrow (August 5) at 13:55 UTC (8:55 AM EDT, 5:55 AM EDT) plus or minus seven hours according to the SpaceWeather.com website.
However, NASA Spokesperson, Susan Hendrix of the Heliophysics Science Division says that the latest computer models indicate that Earth will receive only a glancing blow during this solar storm. Hendrix said that these flares would have had a significant impact on Earth if they hit it directly, but the current models suggest that the only noticeable impact might be visible auroras as far south as the extreme northern portion of the United States.
Concerns about a threat to solar satellite observatory Stereo A located ahead of Earth in orbit around the Sun have also been reduced as the latest models indicate that the bulk of the 'horseshoe' shaped cloud of solar material will travel between the Earth and Stereo A. - http://technorati.com/technology/article/major-series-of-solar-flares-to/