The agency said “moderate” geomagnetic storm conditions are expected Wednesday because of a coronal hole high-speed stream, or winds from a cooler, less dense area on the sun’s surface, which may interact with Earth’s magnetic field, pulling the northern lights further south.

The Northern Lights put on spectacular show over the North-West overnight. Photographers from across the region captured stunning shots of the vivid greens, yellows, purples and reds of the natural phenomenon,

The northern lights may be visible from parts of the U.S. on Tuesday. According to the National Oceanic and Atmospheric Administration (NOAA), the arrival of a so-called "corotating interaction region" could trigger "G2"-class geomagnetic storms.