Geomagnetic Storm Watch: Solar Eruption May Supercharge Auroras Across Northern U.S. This Weekend

A significant solar eruption, specifically a coronal mass ejection (CME), occurred on March 21, propelling solar plasma toward Earth. This event coincides with a coronal hole opening on the sun, releasing a high-speed stream of solar particles. The combined effect is anticipated to trigger a strong G3-class geomagnetic storm, potentially amplifying aurora displays across the northern United States late Saturday and early Sunday, March 22-23. The UK's Meteorological Office forecasts enhanced to strong solar wind speeds due to the combined arrival of the coronal hole high-speed stream and CME. NOAA has issued a geomagnetic storm watch, indicating auroras may be visible as far south as Oregon and the lower Midwest. Auroras are produced by charged particles from the sun interacting with Earth's magnetic field and upper atmosphere. Increased solar activity can expand the visibility of auroras and introduce different colors. To maximize viewing potential, dark skies away from light pollution are recommended. Apps like "My Aurora Forecast & Alerts" and "Space Weather Live" can provide real-time updates.