This was a busy week for geomagnetic storms. A solar wind stream
from an equatorial hole and a CME blew geomagnetic numbers seemingly
off the scale, with the planetary A index on Monday hitting 94.
Aurora was visible as far south as 40 degrees latitude. Imagine a
line running from Reno, Nevada through Provo, Utah then Denver, then
the Kansas-Nebraska state line, Quincy, Illinois, Dayton, Ohio and
Phi...
