CME - Moment of impact

The graph below shows the moment when a piece of the Sun hit the Earth earlier today. Picked up by my magnetometer, it shows how the Earths magnetic field shook from the impact. This called a sudden impulse. On my live data page www.davegradwell.com/magnetometer.html it appears as a tiny "nick" at about 17:30UT.  This may signify some aurora later.

Dave Gradwell

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