Friday’s shaping up to be partly to mostly cloudy, with highs in the low to mid 80s—cooler in the 70s if you're north of Chicago. It’ll be a breezy one, with wind gusts around 30 to 40 mph.

In a surprising turn of events, a “Severe” G4 geomagnetic storm is currently impacting Earth. Energy released by our Sun is affecting Earth’s magnetic field. The stronger the storm, the more likely it is that the northern lights will trickle into the United States. On a scale of 1-5, a G4 storm is quite potent. […]