There is this bug that still exists on 1.7.10 where storms get reset from an F5 tornado or C5 hurricane, also sometimes storms will die straight up after starting to weaken from high intense hurricanes and tornadoes.

I know it was fixed on 1.12.2, but it still exists on the 1.7.10 version.

The only way to fix it is by setting both progressionbase and stagemultiplyer to either 1 or 2, setting it to 1 will increase the chance of max stage hurricanes and tornadoes.

and also setting player and server storm deadly to 2 will also fix it

Also I'm gonna test to see if the latest 1.7.10 mod will work on 1.8.9 (I renamed it to 2.3.12 and changed the minecraft version to 1.8.9)

This is to fix hail not causing any damage too.

Plus, I might make it so that the latest weather2 for 1.12.2 works for 1.7.10 just to fix the resetting storms