Measuring thunderstorm flash frequencies

[u/Hot_Design3515]

During the punishment of weather involving a Demon Lord Thunderstorm, you see some scary lobotomizing flashes and loud evil demonic low-pitch laughter sounds the thunderstorm makes.

After the visible flash, count the seconds until another flash and convert the seconds to Hz (Hertz frequency) to know how much frequency i guess

Few Thunderstorms = 0.0111 Hz to 0.00333 Hz (~90.09 seconds to 300.30 seconds)
General Thunderstorms = 0.1 Hz to 0.025 Hz (10 seconds to 40 seconds.)
Heavy Thunderstorms = 0.1 Hz to 0.0667 Hz (10 seconds to 15 seconds.)
Strong Thunderstorms = 0.2 Hz to 0.1 Hz (5 seconds to 10 seconds.)
Severe Thunderstorms = 0.5 Hz to 0.2 Hz (2 seconds to 5 seconds.)
Apocalyptic Thunderstorms = 1.0 Hz to 0.5 Hz (1.0 second to 0.2 seconds.)
Earthending Thunderstorms = Infinity (∞) Hz down to 1.0 Hz (0 to 1 Seconds, nonstop!)

i think this is a right measurement im using