• A geomagnetic storm is expected to make the northern lights visible in up to 18 U.S. states tonight.
• The Kp index forecast is expected to rise to six on a scale of nine, indicating heightened auroral activity.
• The best viewing conditions are recommended between 10 p.m. and 2 a.m. local time.
• States with the highest chances include Alaska, North Dakota, and Minnesota.
• Recent coronal mass ejections from the sun triggered this geomagnetic storm.

A recent geomagnetic storm is set to disrupt Earth’s magnetic field, bringing the northern lights visible to a broader range of locations in the United States tonight, according to the National Oceanic and Atmospheric Administration (NOAA). The aurora borealis is expected to be especially vibrant due to a forecasted Kp index of six, suggesting significant visibility across northern regions of the U.S. and potentially reaching as far south as Illinois and Oregon. This storm is attributed to a series of coronal mass ejections from the sun occurring earlier this month, an event that usually increases the chances of seeing auroras, according to Forbes.

Tonight's auroral activity is being closely monitored, with NOAA indicating that observers could catch stunning light displays as early as after sunset. Areas in Alaska and Canada remain the most likely to experience the most vivid auroras, though states such as Maine, Michigan, and Minnesota are also in line for potentially spectacular views. The NOAA advises skywatchers to find north-facing vantage points away from city lights for optimal viewing, particularly between the hours of 10 p.m. and 2 a.m., as the auroras generally peak during this time frame, as noted by Newsweek.

The geomagnetic storm, classified as G3, signifies a "strong" level of activity that can cause disruptions not only to natural phenomena but also to power systems and communication technologies. NOAA's forecast highlights this unusual occurrence, as many people in areas typically not prone to auroras may witness them. The conditions are expected to persist with a slight decline on Thursday, but sightings will still be viable, especially in areas further north, according to India Times.

Photographers are also encouraged to take advantage of tonight's celestial display. Experts recommend a wide-angle lens with an aperture of four or below to capture the depth and color of the auroras, while smartphone users can achieve good results by utilizing night mode settings. The spectacular displays of the northern lights are a result of particles from solar winds colliding with Earth’s atmospheric gases, generating mesmerizing colors usually associated with this natural light phenomenon, according to Forbes.