Northern lights may be visible as far south as Alabama, California  NBC NewsWhere will northern lights be visible in the US? Incoming solar storm to unleash auroras  USA TODAYPhotos show the northern lights in the Philadelphia region  CBS PhillyIowans can see the Northern Lights tonight. Here’s where they’re forecast, how best to view  Des Moines RegisterA severe geomagnetic storm could cause colorful auroras over Northern California and Alabama  CNN