The greatest geomagnetic storm of the 20th Century…May 13-15, 1921…a century ago, New York City/New York State were especially hard hit

One thing is certain, we should be prepared for another massive solar storm of the magnitude of the “Carrington Event of 1859” or the great geomagnetic storm of May 1921 – the most powerful solar storm of the 20th century.

via Watts Up With That?

https://ift.tt/33HvF0u

May 13, 2021 at 08:26PM

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