Great Geomagnetic Storm of May 1921
At SPACEWEATHER.COM an essay about the geomagnetic storm of May 1921 sparked my interest (pun intended.) I went to the California Digital Newspaper Collection a did a search. Below are some of the results: Sacramento Union, 15 May 1921 — ARCTIC LIGHTS VISIBLE IN VALLEY Vagabond of Northern Skies Flashes Brilliantly Over Sacramento. CAUSES WEIRD … [Read more…]