Lightening strike question

Last night, there was a really close lightening strike. This morning, I
found two dead squirrels, about six feet apart, under a 60-foot pine oak
tree in the back yard.
Is it possible the squirrels were electrocuted by the lightening--even
though the tree does not appear to have been damaged?
There are no above ground utilizes nearby.
Thank you.
________________________
Whatever it takes.
Reply to
Michael A. Ball
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The tree could have been hit with no visible signs.
Squirrels knocked out of tree (or left 'voluntarily') and died when they hit the ground.
If they were on the trunk of the tree, there could have been fatal current flow between front and rear paws.
If on the ground there could have been similar current. Since paws are close together they would have had to be near what was struck. (Radial voltage drop decreases rapidly away from the earthing point.)
Died of fright (well it happens to people in horror movies).
Send them to CSI perhaps?
-- bud--
Reply to
Bud--
"Pine oak tree"? Do you perhaps mean Pin Oak? As far as I recall, there is no such species as "Pine Oak".
Also, that would be a LIGHTNING strike. No "E" in LIGHTNING.
If there was a stroke, it was load. If you are next to it, you can get skeered (hillbilly inflection).
And I'll bet they aren't "flying squirrels" either, eh?
Sure... whatever IT is.
Reply to
Spurious Response
The lightining striking the ground anywhere near the tree (or on the tree itself) could have electrocuted the squirrels. The step-potential on the ground could have been on the order of several thousand volts, well within the range to kill a small animal.
Lightining is very strange. I've lived in Oregon for about 10 years and can count on two hands the number of times I've seen and heard a classic electrical thunderstorm.
The Pacific Northwest air is cold and while it rains a lot, you rarely will see the intense thunderstorms that are produced in the South, Midwest, and Eastern parts of the USA.
For that reason, grounding of substations and transmission lines does not get as much attention here as it does in other parts of the country. Many times I will see transmission lines run without a static ground wire at the top.
Except for two weeks ago, during the morning hours a bolt-from-the-blue struck near my house and blew up a tree. The debris damaged at least three nearby houses. The skies were generally clear and this was completely unexpected. There was no other apparent lighting or thunder in the area.
To me, it sounded like a 500 bomb had gone off, right outside my house. It made the news that night, and I was astounded to learn that it hit the ground about six blocks away. (I'm guessing it must have been travelling horizontally for a while, directly over my house). I just heard one big, sharp blast. There was no delay between flash and thunder, whatsoever.
It had to be a positive stroke, with exceptional power. I imagine that had it hit my satellite dish, the puny little lighting arrestor probably wouldn't have done much good.
Beachcomber
Reply to
Beachcomber
Except that it is LIGHTNING. Only two "I"s, not three.
What matters is the step across an eight inch long squirrel body.
Not really.
How many times have you ever seen "Ball Lightning"?
No shit.
Except for things like monster DC interties.
Aren't the skies black or gray when lightning strikes where you are?
Hmmm... sounds like a conspiracy.
For lightning... clouds are required.
That would be the sound barrier.
Was it full of electrons?
Even a #0 cable tied to ground wont stop the stray spike that kills sensitive gear.
They are really more to prevent house fires than protect equipment.
Reply to
Spurious Response
Thank you for enlightning me. You must be the "one" in this crowd.
Incidentally, "hillbilly" is no longer correct: the correct term is "Appalachian American."
_______________________________ "Some people learn something new every day, others just get 24 hours older."
Reply to
Michael A. Ball
Yes,
Lightning has been known to travel along the ground for varying distances.
Regards,
Howard Epstein
Michael A. Ball wrote:
Reply to
Howard Epstein
Actually - most livestock, wildlife, and human deaths from lightning are due to the potential difference created when 10's of thousands of amperes are directly or indirectly (induced) between 2 (or 4) points on the ground. Rules of thumb vary, but for the sake of argument consider a squirrel's maximum span is 8 inches. At 2,000A and 5 ohms per foot - he'd experience the delight of just under 7,000V front legs to back. That's just about what he'd get phase to ground (7200V) on a standard U.S. medium voltage distribution circuit. Yep, I think that would do it.
Just for kicks - that same calculation for a cow (5 foot span) would yield plenty of "well done" steak at 50,000V
Park rangers and caddies know when the hair on your arm stands-up or you smell ozone - it's time to squat with your feet together.
Reply to
JTH

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