A “severe” geomagnetic storm watch has been issued for Monday and Tuesday as the largest solar radiation storm in more than 20 years hits Earth, according to the National Oceanic and Atmospheric Administration’s Space Weather Prediction Center.

The United States' largest solar radiation storm in over 20 years could create a dazzling northern lights display starting Monday night.

Colorful auroras could dazzle skywatchers again on Monday night amid a severe geomagnetic storm and what the National Oceanic and Atmospheric Administration said was the largest solar radiation storm in more than 20 years.

A powerful X-class solar flare has unleashed a severe geomagnetic storm, arriving faster and stronger than predicted. Join Weather Network's Kim MacDonald and meteorologist Scott Sutherland as they explain the science behind the storm,

The powerful flare from sunspot region AR4341 peaked at 1:09 p.m. EST (1809 GMT), according to NOAA's Space Weather Prediction Center. The eruption triggered strong (R3) radio blackouts across the sunlit side of Earth, with the most severe disruptions concentrated over the Americas.

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