The Northern Lights are expected to dazzle skywatchers again tonight, Tuesday, September 16, according to the National Oceanic and Atmospheric Administration (NOAA). A strengthening geomagnetic storm could paint the skies with brilliant shades of green, pink, and violet across the northern United States.
This spectacle follows two consecutive light shows earlier this week, on September 14 and 15, giving residents yet another rare opportunity to witness the aurora borealis, as reported People.
What Causes the Northern Lights?
The aurora borealis occurs when charged solar particles collide with gases in Earth’s atmosphere. These collisions release energy as light, creating shimmering waves across the night sky.
According to Forbes, visibility depends on multiple factors, including geomagnetic activity, weather conditions, and observer location. NOAA forecasters predict a Kp index of five tonight on the zero-to-nine scale. This level indicates a minor geomagnetic storm, significantly increasing the chances of aurora sightings.
Where Will the Aurora Be Visible?
NOAA’s aurora forecast suggests the Northern Lights could be visible on the horizon across several northern states, including:
- Idaho
- Maine
- Michigan
- Minnesota
- Montana
- North Dakota
- South Dakota
- Washington
- Wisconsin
In Michigan, the glow may stretch as far south as Manistee, Cadillac, and West Branch, provided skies remain clear. Local National Weather Service offices expect mostly favorable conditions across central and northern Michigan, though some regions may experience patchy clouds or rain, People added.
Best Time and Conditions to Watch
The aurora is typically most active within two hours before and after midnight. To maximize your viewing experience:
- Find a dark, open space away from city lights
- Face north toward the horizon
- Allow your eyes 20–30 minutes to adjust to the darkness
- Be patient—auroras often start faint before bursting into vivid colors
Why This Aurora Matters
Experts highlight that tonight’s display is part of larger solar activity. Coronal hole high-speed streams from the sun are fueling this G1-level geomagnetic storm. As Forbes notes, this gives millions across the U.S. a rare chance to view the aurora borealis without traveling to the far north.
