From Newsgroup: sci.misc

New world record set for longest ever 'megaflash' lightning

A titanic bolt of lightning lit up a whopping 829km of sky from
eastern Texas to Kansas City, Missouri in the US. The monstrous streak
has set the new record for the longest ever lighting flash.

It went off during a storm in October 2017 but remained undiscovered
for almost a decade before observations made by the National Oceanic
and Atmospheric Agency's (NOAA) GOES-16 satellite were re-examined.

The event surpasses by almost 100km the previous record-holder which
stretched across 3 US states during a storm in April 2020.

https://cosmosmagazine.com/earth/earth-sciences/record-megaflash-lightning/

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From Newsgroup: sci.misc

On Thu, 31 Jul 2025 19:52:43 -0500
JAB <here@is.invalid> wrote:

New world record set for longest ever 'megaflash' lightning

A titanic bolt of lightning lit up a whopping 829km of sky from
eastern Texas to Kansas City, Missouri in the US. The monstrous streak
has set the new record for the longest ever lighting flash.

It went off during a storm in October 2017 but remained undiscovered
for almost a decade before observations made by the National Oceanic
and Atmospheric Agency's (NOAA) GOES-16 satellite were re-examined.

The event surpasses by almost 100km the previous record-holder which stretched across 3 US states during a storm in April 2020.

https://cosmosmagazine.com/earth/earth-sciences/record-megaflash-lightning/

The one fact you'd be interested to know - what time the flash happened
- is absent in the article. How did it go undetected? That's a big
one, must have been super interesting. What else do we miss when we
are sleeping? Sasquatch pissing on the network center?
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From Newsgroup: sci.misc

In misc.news.internet.discuss, Retrograde <fungus@amongus.com.invalid> wrote:

The one fact you'd be interested to know - what time the flash happened
- is absent in the article. How did it go undetected? That's a big
one, must have been super interesting. What else do we miss when we
are sleeping? Sasquatch pissing on the network center?

It happened during a majar thunderstorm. From below it probably just
looks like a few close by lightning strikes and only from above can one
see the full extent.

I downloaded the PDF from here:

https://journals.ametsoc.org/view/journals/bams/aop/BAMS-D-25-0037.1/BAMS-D-25-0037.1.xml

And that gives the time:

The present-day reanalysis focused on an exceptionally long megaflash
within this QLCS initiated at 08:56:45.834 UTC on 22 October 2017.

I think eastern Texas is Central Time, and I think it would have still
been summer (daylight savings) time on that date. So that would be
UTC-5, about 4am in the morning. Probably not too many people observing locally.

Elijah
------
knows how to follow links to a source
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From Newsgroup: sci.misc

On Fri, 1 Aug 2025 21:16:57 -0000 (UTC)
Eli the Bearded <*@eli.users.panix.com> wrote:

And that gives the time:

The present-day reanalysis focused on an exceptionally long megaflash
within this QLCS initiated at 08:56:45.834 UTC on 22 October 2017.

I think eastern Texas is Central Time, and I think it would have still
been summer (daylight savings) time on that date. So that would be
UTC-5, about 4am in the morning. Probably not too many people observing locally.

Nice work! Yes, that would explain it.

Shame to miss it. Imagine seeing a lightning bolt start from somewhere
over one horizon, flash across the sky, and proceed straight across the opposite horizon. Would have been breathtaking. 500+km, wow.
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