Northern lights tonight: Don’t miss your chance to catch a visible aurora borealis in 19 states. Here’s the forecast for where and when

The Northern Lights, also known as aurora borealis, may be visible in nearly 19 U.S. states tonight, Wednesday, March 18 into Thursday, March 19, according to the National Oceanic and Atmospheric Administration’s (NOAA) Space Weather Prediction Center. The aurora borealis is the result of a geomagnetic storm that occurs when a coronal mass ejection (CME), an eruption of solar material, reaches Earth and causes swaths of green, blue, and purple colors to appear in the dark sky. We are currently seeing increased solar activity as the result of an 11-year sun cycle peak. NOAA says this G2, or moderate geomagnetic storm is partially thanks to Friday’s upcoming spring equinox, or “the equinox effect.” The effect doubles the chance of auroras when Earth tilts its axis, thereby causing the planet’s magnetic field to better align in a way to uptake solar material. Where will the northern lights be visible? According to the NOAA’s map, a to