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Friday the 13th solar storm could bring auroras to 18 US states this weekend

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Up to 18 U.S. states could see auroras in the coming days as a "moderate" geomagnetic storm rocks Earth 's magnetic field.

The space weather event is predicted to end on Sunday (June 15 ) or Monday ( June 16 ) The disturbance is caused by a co-rotating interaction region — turbulence in the solar wind — that originated from a large "coronal hole" on the solar surface.