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Sunspots

Solar Flares Coronal Mass Ejections X-class Flares Magnetic Fields Solar Cycles Geomagnetic Storms Active Regions Hyperactive Sunspot AR3664 Historical Events Impact on Earth Technology Impact Sunspot Region 4087 AR4087 Sunspot Regions Solar Flare Classification Group 4246 AR4274 Sunspot AR 3664 Region 4274 Earth Impacts Sunspot AR3664 Historical Observations Solar Cycle AR3842

NOAA Issues G2 Geomagnetic Storm Watch as Giant Sunspot Cluster Faces Earth

Forecasters say a glancing CME could drive moderate geomagnetic activity with auroras reaching mid-latitudes.

X1.2 Solar Flare from AR4114 Disrupts Pacific Radio Communications

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