The aurora is not visible during daylight hours. Aurora can often be observed somewhere on Earth from just after sunset or just before sunrise. The green ovals turn red when the aurora is forecasted to be more intense. The brightness and location of the aurora is typically shown as a green oval centered on Earth’s magnetic pole. The two maps show the aurora and viewline tonight and tomorrow night. 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. This is a prediction of the intensity and location of the aurora borealis tonight and tomorrow night over North America.
