Answer by Kris Rosvold:
If we get a really big solar flare (the largest one in recent memory just knocked out cell phone service for a couple of days) like the one in the 1850s, the following equipment we use is… TOAST:
Most, if not all, communications sattelites.
Most, if not all, automotive engine control modules.
Any power transformer connected to above ground power lines. (This includes transformers in equipment like home electronics. (That's pretty much the entire west coast and the Midwest)
Many lower voltage motor capacitors (below 440v rated).
Most, if not all, 115v and lower voltage motors.
Any power transfer Station connected to above ground power lines. (Control system transformers blown)
Gas pumps (the control transformers go … POOF, SMOKE!)
Cash registers, ATMs, computers, cell phones, cell phone towers, … pretty much anything plugged into power lines with control transformers in it… POOF, SMOKE, paperweight!!
Most control systems on airliners which happen to be grounded during the storm… the ones in the air MIGHT be OK, at least until they run out of fuel.
Basically, Society as we know it is over.
Here's hoping you're all set with AT LEAST 3 months of food and water and heat and ammo for the whole damn family!
If/when (and by all indications we're overdue) it happens it will NOT be fun! Even if you're well prepared.