Chicago, IL – A strong solar storm could light up the skies this week across the northern United States, with the aurora potentially stretching as far south as the lower Midwest and westward into Oregon.
According to the NOAA Space Weather Prediction Center, a coronal mass ejection (CME) from the sun is expected to reach Earth late Monday into Tuesday. The event follows a solar flare from Active Region 4199, which produced a full-halo CME detected on August 30. Forecasters anticipate geomagnetic storm levels reaching G2 (moderate) initially, with conditions possibly intensifying to G3 (strong) on Tuesday as the bulk of the storm moves through.
A G3 storm can trigger widespread auroral activity across northern latitudes and, depending on magnetic field orientation, extend visibility farther south than usual. The center reported that states in the northern tier, the lower Midwest, and as far west as Oregon may experience northern lights overnight.
While such storms are known for producing vivid aurora displays, they can also cause limited disruptions to power grids, satellite operations, and high-frequency radio communications. NOAA officials said these impacts are typically minor and manageable.
Residents hoping to catch a glimpse of the aurora should look north during nighttime hours when skies are clear of clouds and light pollution. Viewing conditions will depend on local weather, and experts recommend monitoring updated forecasts through the NOAA Space Weather Prediction Center.
The last time auroras reached into the Midwest occurred during earlier strong solar events this year, which drew large crowds of skywatchers across states such as Illinois, Wisconsin, and Iowa.
This article was produced by a journalist and may include AI-assisted input. All content is reviewed for accuracy and fairness.
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