• The NOAA forecasts a moderate to strong geomagnetic storm, potentially making the Northern Lights visible in 19 U.S. states.
• The 'equinox effect' around March 20 enhances auroral activity, allowing the Northern Lights to be seen as far south as Illinois and Oregon.
• Prime viewing times are between 10 p.m. and 2 a.m. local time on March 18 and 19; find dark locations away from city lights for optimal viewing.