Geomagnetic Storm Incoming: What to Expect

The National Oceanic and Atmospheric Administration’s (NOAA) Space Weather Prediction Center has just issued a watch for a strong geomagnetic storm (G3) for March 31st and a moderate watch (G2) for April 1st. According to the NOAA website, we are currently in a minor watch (G1). But what does this mean, and why is it happening?

Impacts to technology from a G3 storm generally remain small, but it can drive the aurora further equatorward of its polar home. Aurora may be visible over the northern tier states if the conditions are favorable. Credit: NOAA