The Hunga Tonga eruption sparked the highest-altitude
lightning ever recorded. The plume from the 2022 eruption
generated flashes up to 30 kilometers above sea level
Skyler Ware, Science News, June 23, 2023
[www.sciencenews.org]

200,000 Lightning Flashes – Tonga’s Hunga Eruption
Produced the Most Intense Lightning Ever Recorded
American geophysical Union, SciTechDaily, June 21, 2023
[scitechdaily.com]

The open access paper is:

Alexa R. Van Eaton, Jeff Lapierre, Sonja A. Behnke, Chris
Vagasky, Christopher J. Schultz, Michael Pavolonis,
Kristopher Bedka, Konstantin Khlopenkov, 2023, Lightning
Rings and Gravity Waves: Insights Into the Giant Eruption
Plume From Tonga's Hunga Volcano on 15 January 2022.
Geophysical Research Letter, First published: 20 June 2023
[agupubs.onlinelibrary.wiley.com]

Yours,

Paul H.

"The past is never dead. It's not even past."
William Faulkner, Act 1, Scene III, Requiem for a Nun (1951)