A few days later, another sunspot appeared that eventually produced a solar flare. The sun produced a C-class solar flare on March 20, and the subsequent stream of particles from a coronal mass ejection are on their way to Earth. NASA's Space Weather Prediction Center has issued a geomagnetic watch after an eruption from the sun called a coronal mass ejection. A G2 is considered moderate, but it also means the storm could produce northern lights visible as far south as the northern United States. There are also apps out there like My Aurora Forecast and Northern Lights Aurora Alerts.

Source: CBC News March 22, 2019 19:41 UTC