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Jon Greif

Location of Photo:

Alpine, CA, USA

Date/Time of photo:

March 27, 2024, at Noon PST


ZWO SeeStar S50 "smart" scope and Pixinsight 1.8.9 on an M1 MacBook Pro.


The Sun, photographed from our home in Alpine on Wednesday shows the very large (7 Earth diameters) and active Sunspot region AR3615 on the Western (Earth facing) limb. Yesterday, AR3615 produced an X flare with an associated coronal mass ejection (CME). In addition, over the last 24 hours, AR3615 released an M7, an M6, an M9.7 and an M3.1 flare. An R3 (strong) radio blackout occurred following the X flare affecting an area over the Pacific Ocean, between the west coast of Mexico and Hawaii. The event appears to have an associated slow coronal mass ejection (CME). The region has also moved into an alert zone for solar energetic particle events that could create particle storms. Western limb regions are better connected magnetically to Earth.