Additional Coverage:
Get Ready for a Light Show! Northern Lights May Be Visible Across the US
A strong geomagnetic storm, sparked by eruptions on the sun’s surface, is predicted to paint the night sky with vibrant auroras. Many in the northern U.S., and possibly as far south as Kentucky, might catch a glimpse of this celestial display late Tuesday and early Wednesday.
What causes the Northern Lights?
The breathtaking Northern Lights, or Aurora Borealis, occur when waves of energized particles from the sun interact with Earth’s magnetic field. This interaction creates a dazzling light show.
The National Oceanic and Atmospheric Administration’s (NOAA) Space Weather Prediction Center has issued a G3, or “strong,” geomagnetic storm warning for early Wednesday morning. The geomagnetic storm scale ranges from G1 to G5, with G5 being the most intense.
Where’s the best view?
While much of the Northeast may be clouded out, skywatchers in cities like Frankfort, Kentucky, and Chicago are expected to have clear viewing conditions. The Rockies and western U.S. are also anticipated to have prime viewing opportunities just before sunrise.
For the best aurora viewing, escape city lights and find a spot with an unobstructed view of the northern horizon. Pro tip: The aurora’s vibrant colors are often more visible through a camera lens, especially with a longer exposure time.
Beyond the light show
While the aurora is a beautiful spectacle, this G3 geomagnetic storm could also cause minor disruptions to radio frequencies and satellite navigation systems. The Space Weather Prediction Center predicts the storm will weaken to a G1 level by Thursday and drop below G1 by Friday.