Hypothetical. Is it possible to have a -100c ring in a TC?

[InfernoFlameCat]

Can any experts verify this if they have ever witnessed this?

[RL3AO]

I believe a few very strong updrafts have exceeded -100C in intense TCs, but I don't think the current composition of the atmosphere would support a full ring of -100C. The tropopause is generally not going to allow past -80C over a large area in the tropics.

[InfernoFlameCat]

Ok cool good to know
Although I am slightly disappointed
-100c would be amazing.

[hurricanes1234]

Here's the best example of this occurring in 2019 with Typhoon Kammuri on November 30. The cloudtop temperatures in a small portion of the storm allegedly dipped to -109.4°C according to satellite measurements, shattering by roughly 7°C the old record of the coldest cloudtops, which was in another tropical cyclone as well.

https://www.wunderground.com/cat6/Kammuri-Sweeps-Through-Philippines-Coldest-Cloud-Tops-On-Record

They also mention that in rare cases, severe thunderstorm activity can produce cloudtop temperatures below -100°C, such as in November 2008 within a cluster of thunderstorms off Australia.

I can't imagine the conditions at the surface beneath cloudtops that cold but I bet it must be pretty scary, unforgettable, epic and extraordinary all at the same time!!

[DanieleItalyRm]

Can the max top cloud develop during depression/storm phase instead that in the hurricane phase?