IMPACT! A coronal mass ejection has just swept past Earth, shaking our planet's magnetic field. http://www.sec.noaa.gov/rt_plots/kp_3d.html

It's too soon to say how strong the resulting geomagnetic storm will be, but if if it's dark where you live, you should step outside now and look for auroras. http://www.spaceweather.com/aurora/gallery_01may05.htm

http://www.spaceweather.com