http://www.undergroundworldnews.com CO-ROTATING INTERACTION REGION: NOAA forecasters estimate a 60% chance of polar geomagnetic storms on March 28th when a co-rotating interaction region (CIR) is expected to hit Earth's magnetic field. CIRs are transition zones between fast- and slow-moving solar wind streams. Solar wind plasma piles up in these regions, producing density gradients and shock waves that do a good job of sparking auroras. http://www.spaceweather.com/