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.
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--
"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.
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
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.
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."
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.
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