Aurora chasers are on high alert for geomagnetic storm conditions overnight with northern lights possible at mid-latitudes.

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.

If you missed your chance earlier this week to see the Northern Lights, the geomagnetic storm continues on Wednesday to increase the likelihood of aurora lights along the northern U.S.