This is a prediction of the intensity and location of the aurora borealis tonight and tomorrow night over North America. It also shows a 'viewline' that represents the southern-most locations from which you may see the aurora on the northern horizon. This product is based on the OVATION model and uses the maximum forecast geomagnetic activity (Kp) between 6pm and 6am US Central Time. The images are updated continuously, with the transition when "tomorrow night" becomes "tonight" occurring...
