Skywatchers as far south as Pennsylvania should be on the lookout for auroras in the night sky sparked by a powerful geomagnetic storm, space weather experts say.
The auroras are triggered by charged solar particles that blew outward from the sun in an intense eruption on Thursday (Aug. 4).
The particles are typically funneled along Earth's magnetic field to the polar regions, where they can spark stunning displays of the northern lights in the Northern Hemisphere, and southern lights in the south.
"Sky watchers at all latitudes should be alert for auroras after nightfall.
Tip: the best hours for aurora sightings are usually around local midnight," advised Spaceweather.com, a website that monitors space weather and skywatching events.