CNN — A powerful solar storm is expected to reach Earth on Monday evening, potentially triggering a display of northern lights across the northern hemisphere.

The stunning wave of auroras may be visible much farther south than is typical, reaching not just the northern US states but also parts of the lower Midwest and Oregon, according to a statement from the US National Oceanic and Atmospheric Administration’s Space Weather Prediction Center .

Scientists rank space weather conditions on a scale of five, from minor (G1) to severe (G5), and Monday night’s forecast shows the geomagnetic storm will likely cause moderate, G2- or G3-level conditions early in the night. And the storm may reach a rare G4 designation going into Tuesday morning, according to the UK’s Meteorological Off

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