- Updated: 20:55 UTC 13 Sept. (4:55 pm EDT, 13 Sept.)
The anticipated coronal mass ejection has arrived, much earlier than anticipated. The disturbance impacted the Earth near 20:02 UTC and has the potential to produce periods of moderately strong geomagnetic and auroral storm activity. The middle latitude auroral activity Watch IS ACTIVE, effective immediately! Observers are encouraged to watch the skies for possible activity TONIGHT. The next 12 to 18 hours will be the most volatile.
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