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Lightning

Dana Whitlow

Sat, Nov 28, 2020 8:33 PM

Hello folks,

Last night's great lightning photo from the drone
reminded me of a stroke recorded at Arecibo
some years back.

See https://www.youtube.com/watch?v=uFAEDgiQRnk

I was not the lucky guy who caught this, but it was a
great stroke of luck.

Of particular interest to me was the extreme slo-mo
sequence and the part beginning 53 sec into the video.
One can clearly see what appears to be a "leader" at
54 sec, and it's interesting to note the similarity of its
shape compared to the main stroke. This would not
be surprising except for one thing: this pre-stroke
appears to have struck much lower on the tower then
did the main stroke. It seems to me that if the two
had struck at such disparate locations on the tower,
they would not have the same shape.

My theory is that the apparent leader was some kind
of video artifact associated with the slo-mo process,
not a real event. Do any of you have any ideas about
this?

Thanks,

Dana

Hello folks, Last night's great lightning photo from the drone reminded me of a stroke recorded at Arecibo some years back. See https://www.youtube.com/watch?v=uFAEDgiQRnk I was not the lucky guy who caught this, but it was a great stroke of luck. Of particular interest to me was the extreme slo-mo sequence and the part beginning 53 sec into the video. One can clearly see what appears to be a "leader" at 54 sec, and it's interesting to note the similarity of its shape compared to the main stroke. This would not be surprising except for one thing: this pre-stroke appears to have struck much lower on the tower then did the main stroke. It seems to me that if the two had struck at such disparate locations on the tower, they would not have the same shape. My theory is that the apparent leader was some kind of video artifact associated with the slo-mo process, not a real event. Do any of you have any ideas about this? Thanks, Dana

Tom Holmes

Sat, Nov 28, 2020 8:53 PM

It appears to me that the two strikes came from
different places, so for me, all bets are off
regarding the choice of where to hit.

Tom Holmes, N8ZM

-----Original Message-----
From: mvus-list mvus-list-bounces@lists.febo.com
On Behalf Of Dana Whitlow via mvus-list
Sent: Saturday, November 28, 2020 3:33 PM
To: Midwest VHF/UHF Society Mailing List
mvus-list@lists.febo.com
Cc: Dana Whitlow k8yumdoober@gmail.com
Subject: [mvus-list] Lightning

Hello folks,

Last night's great lightning photo from the drone
reminded me of a stroke recorded at Arecibo
some years back.

See https://www.youtube.com/watch?v=uFAEDgiQRnk

I was not the lucky guy who caught this, but it
was a
great stroke of luck.

Of particular interest to me was the extreme
slo-mo
sequence and the part beginning 53 sec into the
video.
One can clearly see what appears to be a "leader"
at
54 sec, and it's interesting to note the
similarity of its
shape compared to the main stroke. This would not
be surprising except for one thing: this
pre-stroke
appears to have struck much lower on the tower
then
did the main stroke. It seems to me that if the
two
had struck at such disparate locations on the
tower,
they would not have the same shape.

My theory is that the apparent leader was some
kind
of video artifact associated with the slo-mo
process,
not a real event. Do any of you have any ideas
about
this?

Thanks,

Dana

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It appears to me that the two strikes came from different places, so for me, all bets are off regarding the choice of where to hit. Tom Holmes, N8ZM -----Original Message----- From: mvus-list <mvus-list-bounces@lists.febo.com> On Behalf Of Dana Whitlow via mvus-list Sent: Saturday, November 28, 2020 3:33 PM To: Midwest VHF/UHF Society Mailing List <mvus-list@lists.febo.com> Cc: Dana Whitlow <k8yumdoober@gmail.com> Subject: [mvus-list] Lightning Hello folks, Last night's great lightning photo from the drone reminded me of a stroke recorded at Arecibo some years back. See https://www.youtube.com/watch?v=uFAEDgiQRnk I was not the lucky guy who caught this, but it was a great stroke of luck. Of particular interest to me was the extreme slo-mo sequence and the part beginning 53 sec into the video. One can clearly see what appears to be a "leader" at 54 sec, and it's interesting to note the similarity of its shape compared to the main stroke. This would not be surprising except for one thing: this pre-stroke appears to have struck much lower on the tower then did the main stroke. It seems to me that if the two had struck at such disparate locations on the tower, they would not have the same shape. My theory is that the apparent leader was some kind of video artifact associated with the slo-mo process, not a real event. Do any of you have any ideas about this? Thanks, Dana _______________________________________________ mvus-list mailing list mvus-list@lists.febo.com http://lists.febo.com/mailman/listinfo/mvus-list_l ists.febo.com