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A comment on Continued G4 (Severe) Geomagnetic Storming Observed. Parent comment

Re:Continued G4 (Severe) Geomagnetic Storming Observed by colanderman on Friday September 08, 2017 @12:43PM (#15201753)
The scale is explained here: http://www.swpc.noaa.gov/noaa-scales-explanation (click on "Geomagnetic storms")
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Re:Continued G4 (Severe) Geomagnetic Storming Observed by daenney on Friday September 08, 2017 @12:53PM (#15201842)
Ah, lovely. Thanks for the pointer!
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