A Severe Geomagnetic Storm could make the northern lights viewable as far south as Florida
A Severe Geomagnetic Storm [G4]-nearing G5 strength-could make the northern lights viewable for a good chunk of the U.S. tonight, even extending as northern Florida [on the northern horizon].
Geomagnetic Storm strengths and impacts
The favored areas to view the northern lights will be for northern and central locations in the U.S. but even parts of the South have the potential to see the northern lights tonight.
Forecast for areas that could see the northern lights
The optimal timeframe will be late tonight and early Friday morning. To increase your chances of seeing the northern lights, get away from light pollution from cities and look toward the northern horizon. You also have a better shot of seeing the northern lights utilizing your phone-long exposure/night-mode.
There's a lack of significant storm system impacting the U.S. tonight so minimal cloud coverage will allow for good viewability for most folks. Parts of New England, the central U.S. Rockies and Northern Plains could see some clouds, but other areas will be clear.
Cloud coverage forecast tonight [blue is clouds, white is clear skies]