I wondered if this solar flare might relate to 30's diagram, the increased number of quakes today
http://www.terminusreality.com/forum/index.php/topic,780.msg3783.html#new (And, I worry about whatever else such things mean.)
See the link
http://spaceweather.com/ for more info and & to see a
short movie of it.
"FARSIDE FLARES--MORE TO COME? An active sunspot is about to emerge over the sun's southeastern horizon. It announced itself yesterday with a C4-class flare that hurled material high above the stellar surface. . . .
Although the
explosion happened behind the limb of the sun,
it nevertheless yielded enough x-radiation to produce a wave of ionization in Earth's upper atmosphere. Researcher Rob Stammes recorded a sudden ionospheric disturbance (SID) when the wave passed over his lab in Laukvik, Norway. . . . Without even showing itself, the sunspot is already geoeffective."