Northern Lights Dazzle Sky Over Many U.S. States This Week

Monroe, Wisconsin — A surge of geomagnetic storms lit up the night sky with the aurora borealis this week, with sightings reported across a wide range of states including Alabama and Florida. The stunning display was the result of increased solar activity that pushed the northern lights further south than usual.

“Well, we had activity tonight — a lot of geomagnetic storm activity,” said Shawn Dahl, service coordinator at the National Oceanic and Atmospheric Administration‘s (NOAA) Space Weather Prediction Center. The vibrant hues of green and pink illuminated rural areas, including Monroe County, Wisconsin, on Tuesday night.

Geomagnetic storms occur when charged particles from the sun intersect with Earth’s magnetic field. This week, two coronal mass ejections (CMEs) from the sun triggered the intense storms. CMEs are massive bursts of plasma and magnetic fields that travel towards Earth, and Dahl confirmed their arrival on Tuesday.

The effect of the storms was substantial, with NOAA reporting the activity registered as the second-highest level on its five-step scale. “The magnetic field was not only eight times stronger than what’s normal but also favorable for continued activity,” Dahl noted.

Looking ahead, the NOAA forecast suggests that the aurora may remain visible over the northern U.S., potentially as far south as Northern California and Alabama. Although the UK Met Office indicated that parts of Britain could also see the aurora, local cloud cover may hinder visibility.

The best time to view the northern lights is between 10 p.m. and 2 a.m. local time, away from light pollution. Checking the sky soon after dark is recommended to increase chances of witnessing the phenomenon. Citizens can also use apps like My Aurora Forecast & Alerts to track potential sightings.

As the sun approaches the peak of its 11-year cycle, known as solar maximum, such celestial displays are expected to become more frequent in the coming months. This upturn in solar activity results in increased solar winds, causing more energetic collisions with Earth’s atmosphere, leading to dazzling auroras.