I've had an intriguing time following a nearby lightning strike this past Monday. I wasn't home but my son said he thinks it hit it somewhere down over the hill. We couldn't find any obvious strike point.
From the result I think it may have created two surges, one through the cable TV line and one through the ground. All wires (power, cable and ethernet) are underground here, except for the bit of Comcast cable around the outside of the house.
Wiped out in a few milliseconds:
One 40" tv
A solar fence charger around the horse pasture (it had a huge "antenna" array, perfect for picking up an EMP, AND solidly grounded)
Some GFCIs scattered around the farm (four just tripped, two were fried)
A Comcast cable modem and two TV boxes (they gave me new equipment)
The Asus dual band wifi router in the house
A big Cyberpower UPS "protecting" those (dead, dead, dead)
The Netgear wifi router in the shop (connected by underground ethernet to the router in the house)
The motherboard in my Dell OptiPlex tower desktop in the shop. Since it was powered from a still functioning UPS I think the surge came through the underground ethernet cable from the house.
Fortunately the memory, three SSD drives, the Nvidea GPU, dual monitors, and the rest of the computer, video, and audio equipment attached was undamaged.
All other electronic devices around the property were fine. (Much is on one of six UPS units)
No living things were affected.
Dell replaced the motherboard in my shop computer yesterday. After that, because of the hardware change, the Windows boot security invalidated my login PIN and wouldn't accept my password. A complete system disk restore from my daily backup didn't help. Dell and Microsoft said there was only one solution: reinstall Win10 from scratch and reconfigure everything. I didn't imagine enjoying that too much.
My son the tech Wizard suggested a solution: boot Linux from a thumb drive and remove the existing Win10 user password. That worked like a charm and I'm back in business, nothing lost. Me, myself, and I feel better now.
Overall, the experience was entertaining but I'm not sure I would recommend it.
JKJ