Northern Lights Forecast: 20 States Under G2 Storm Watch For Stunning Aurora Friday Night

Skywatchers in the northern U.S. are on high alert because the latest Northern Lights forecast says that geomagnetic activity will increase. The NOAA Space Weather Prediction Center (SWPC) has officially put out a G2 (Moderate) geomagnetic storm watch for Friday night, April 17, through Saturday, April 18, 2026.

A coronal hole (CHHSS) on the sun's surface sends out a high-speed solar wind stream that starts this solar event. With the Kp index projected to hit a 6, the aurora borealis could dip much further south than usual, potentially lighting up the horizon for millions of Americans from Washington to Pennsylvania.  

Which States Are in the Northern Lights Forecast Zone?

Current modeling suggests that the auroral oval will expand significantly during the peak of the G2 storm. While the most vibrant displays of shimmering greens and purples are reserved for high latitudes, a view line has been established across the northern and mid-west regions.

Note: Data based on NOAA's 3-Day Forecast and experimental Aurora Dashboard.

What is the Best Time to See the Northern Lights Tonight?

To catch the aurora, timing and darkness are your best allies. Space weather experts suggest that the most intense geomagnetic disturbances typically occur in three-hour windows.

• Peak Viewing Hours: The best window is generally between 10:00 PM and 2:00 AM local time.

• The Kp Index Factor: Look for a Kp index of 5 or 6 on real-time monitors. A higher number indicates a stronger storm and a better chance of seeing the lights further south.

• Direction: Always look toward the northern horizon. Even if you cannot see the colors with the naked eye, modern smartphone cameras with Night Mode can often capture the vibrant hues of the aurora.

Check Out - Northern Lights vs Southern Lights: What’re the Key Differences?

Viewing Tips for a Clear Aurora Experience

According to the UAF Geophysical Institute, cloud cover and light pollution are the biggest obstacles to a successful sighting. If you are within the forecast zone, follow these steps to increase your odds:

• Escape the City: Drive away from streetlights and urban "sky glow" to a dark-sky location.

• Check the Clouds: Ensure you have clear skies; even a thin veil of clouds can obscure the light.

• Let Your Eyes Adjust: Give your eyes at least 20 minutes to adapt to the darkness without looking at your phone screen.

• Use a Tripod: If you are photographing the event, a steady base is essential for the long exposure times needed to capture the light.

This solar event in April 2026 is one of the best chances this spring to see the aurora borealis in the Lower 48. These G2 storm watches are happening more often as the sun gets closer to its solar maximum. To keep up with the solar wind in real time, keep an eye on official NOAA updates.