Earth is bracing for an impact tonight, March 31, as a swift coronal mass ejection (CME) speeds toward our planet. If this solar event causes a glancing blow as anticipated, it could trigger geomagnetic storm conditions.

Geomagnetic Storm Potential and Aurora Visibility

The arrival of the CME may cause auroras to extend significantly further south than their usual latitudes, depending on the storm's final strength. Current forecasts suggest that geomagnetic activity will peak at moderate storm levels throughout the night.

This activity is expected to gradually decrease to minor storm levels by April 1. Geomagnetic disturbances are ranked on a scale ranging from G1 to G5, indicating the severity of the disruption to Earth's magnetic field.

Where to Watch: 16 States in the Aurora Zone

Auroras might become visible tonight across a wide swath of the United States, potentially reaching as far south as 16 states, with sightings possible from Alaska all the way to Wyoming.

It is important to remember that predicting the Northern Lights remains challenging. The current visibility list is based on forecasts available at the time of publication. If conditions intensify upon the CME's arrival, the lights could appear even farther south. Conversely, if conditions do not align perfectly, the viewing event might not materialize.

Timing Your Aurora Viewing Session

For the best chance of catching the display tonight, observers should head outside as soon as darkness falls. Geomagnetic activity is anticipated to increase before nightfall and persist overnight.

Currently, the timing appears most favorable for viewers in northern Europe. However, if the CME arrives later than expected, the peak viewing window could shift to favor observers in the northern United States and Canada.

Tips for Successful Aurora Photography and Viewing

If you are located in one of the 16 potentially affected U.S. states, preparation can significantly boost your chances of seeing the show. Seek out a dark location that offers a clear, unobstructed view toward the northern horizon.

The farther you can travel away from urban light pollution, the better your viewing experience will be. Once settled, use your smartphone camera to scan the skies for any faint, hazy glows.

Interestingly, the initial, faint flickers of the aurora are often captured better by phone cameras than by the naked eye. Remember to dress warmly and maintain patience, as auroras are unpredictable and can appear suddenly before vanishing just as quickly.

To stay informed about the latest space weather updates specific to your area, downloading a dedicated space weather application is recommended. Readers who capture photos of the Northern or Southern Lights and wish to share them with Space.com should email their image, comments, name, and location to spacephotos@space.com.