What a geomagnetic storm is
A geomagnetic storm happens when solar activity disturbs Earth’s magnetic field. Strong storms can expand aurora visibility and, in rare cases, affect technology and infrastructure.
Why people search during alerts
People want to know whether they might see northern lights, whether travel or communications could be affected, and how strong the storm is expected to be.
Tahoe viewing note
Tahoe has dark-sky pockets, but aurora visibility depends on storm strength, cloud cover, moonlight, and latitude. Check official space weather alerts and local weather before making plans.
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