There are reports out this morning that a big solar flare in 1972 caused naval mines placed by the U.S. off the coast of Vietnam to explode.
https://www.livescience.com/64062-mines-solar-storm-1972-vietnam.html
https://www.colorado.edu/today/2018/11/12/1972-solar-storm-triggered-vietnam-war-mystery
Background info:
https://oraprdnt.uqtr.uquebec.ca/pls/public/docs/GSC418/F1929448428_Solar_Superstorm__Astronomy_Sept_2008.pdf
I remember this solar event. It caused aurora near New York City:
https://soldersmoke.blogspot.com/2009/09/carrington-flares-aurora-where-were-you.html
POTA Afternoon at US-4571 City College San Francisco
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Turns out that City College San Francisco on the US-4157 Juan Bautista de
Anza Nationali Historic Trail is a pretty good QTH even in the middle of
the ...
3 hours ago
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