Auroras Expected as Far South as Illinois and Oregon Tonight Due to Geomagnetic Storm
• A strong geomagnetic storm, classified as G3, is expected to create visible auroras in mid-latitude regions, including parts of Illinois and Oregon, on the night of June 4 into June
• According to NOAA's Space Weather Prediction Center, this event is driven by multiple coronal mass ejections (CMEs) launched from the sunspot region 4455, which recently produced significant solar flares, including an X1-class flare. These CMEs may merge into a 'cannibal CME,' potentially intensifying the storm's effects. The strongest geomagnetic activity is anticipated during the evening and overnight hours, with peak conditions between 2 p.m. and 5 p.m. EDT and again from 8 p.m. to 11 p.m. EDT. Moderate G2 storm conditions are expected outside these peak periods. The auroras could extend much farther south than usual, offering a rare viewing opportunity for skywatchers in the U.S.
Why It's Important?
The G3 geomagnetic storm could disrupt satellite operations, GPS systems, and power grids, though these impacts are generally manageable at this storm level. For the public, the primary effect will be the opportunity to view auroras in regions where they are rarely visible, such as Illinois and Oregon. However, the timing and intensity of the storm remain uncertain due to the complex interaction of multiple CMEs. This uncertainty could shift the visibility window by several hours or alter the storm's strength.
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