SOLAR STORM UPDATE:
The first of two CMEs expected to hit Earth's magnetic field on Sept. 12th has arrived, and a minor (G1-class) geomagnetic storm is underway as a result of the impact.
The second and potentially more powerful CME is still en route. NOAA forecasters say geomagnetic storming could become strong (G3-class) during the late hours of Sept. 12th and Sept 13th after the second CME arrives.