Observed arrival · 2026-10-07

Charlightning’s lightning-risk calculator

charlightning.org Visit website

Editorial interest 82/100 Selection signal · not a rating of the site

A free, open-source browser calculator for assessing lightning-discharge risk under Colombia’s NTC 4552-2:2023 and IEC 62305-2.

Landing page captured for the 2026-10-07 issue.

For: Engineers assessing lightning risk in Colombia
Worth noticing: The menu includes four worked standard examples: a rural house, offices, a hospital and apartments.

Field notes

The menu organizes its worked cases as examples E.2–E.5 and links separately to Colombian DDT validation, citation guidance and the source code. The page identifies Sergio Andrés Estrada Vélez as the author and carries a GPL-3.0 notice. It also cautions that the tool supports design work but does not replace the responsible engineer’s judgment or signature.

Observed signals

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Editorial observations of this landing page, not a rating.

○OpenPublic substance visible

✦PrettyNotable craft visible

●ProPolished or operationally mature

◎NicheUnusually specific use

◉HumanPersonal, local, civic, or handmade

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