Aurora alert: Strong geomagnetic storm could spark northern lights at mid-latitudes across US and Europe
![Aurora alert: Strong geomagnetic storm could spark northern lights at mid-latitudes across US and Europe](https://cdn.mos.cms.futurecdn.net/HDkHMAMNXX7N7tZquKpb9d.jpg)
Northern lights could be visible over mid-latitudes across the US and Europe on July 30. A geomagnetic storm watch has been issued by NOAA's Space Weather Prediction Center.