A powerful solar flare from Sunspot AR 4341 on January 18, 2026, triggered a long-duration X1.9-class solar flare, followed by a coronal mass ejection (CME) and a severe S4 (severe) solar radiation storm. The CME is expected to reach Earth around January 19-20, 2026, with initial forecasts predicting a G4 (severe) geomagnetic storm. Recent satellite data suggest the CME may have already arrived, causing geomagnetic activity to reach G3 levels. This storm has the potential to produce spectacular northern lights, visible across Canada and the northern United States, and possibly farther south depending on the storm's intensity and the sun's auroral hole position. The forecast indicates auroras could be seen as far south as California, Texas, and the southeastern US, although cloud cover may limit visibility. Forecasters advise seeking dark, clear skies for the best viewing experience and recommend using aurora alert apps. The storm’s arrival and intensity are being closely monitored, with the potential for continued geomagnetic activity through January 21, 2026.