A solar wind stream hit Earth's magnetic field on May 27-28, sparking a moderate geomagnetic storm and auroras in both hemispheres.  At the time this alert is being composed (1500 UT on May 28), naked-eye Southern Lights are dancing in the skies over Tasmania and New Zealand.  If forecasts are correct, geomagnetic activity should remain at elevated levels for the next 24 to 48 hours. Visit http://spaceweather.com for updates and images of the ongoing storm.

Looks like we are in for a brain tune up then!  Seeing that humans are just lumps of meat run by glucose and electric pulses looks like some of us will be feeling the strain for week to come, good luck!