
The northern lights could illuminate skies overnight tonight Aug. 19-20, thanks to a fast-moving stream of solar wind that may spark geomagnetic storm conditions, potentially triggering visible auroras across 10 states, according to the National Oceanic and Atmospheric Administration (NOAA).
Forecasters from NOAA's Space Weather Prediction Center (SWPC) and the U.K. Met Office predict a chance of minor (G1) geomagnetic storm conditions tonight, with further possible aurora enhancements in the days to come.