Rain and thunder sounds were made possible by original sounds from FreeSound. Short clips were used from the sources below.

200271__jmbphilmes__rain-light-1-rural                           - CC0 1.0      - https://freesound.org/people/jmbphilmes/sounds/200271/
319446__magedu__ambience_forest_austria_w4tel_thunder_light_rain - CC BY 4.0    - https://freesound.org/people/magedu/sounds/319446/
649818__fran-freesound__fran_lamp_light_rain_woodlands           - CC BY-NC 4.0 - https://freesound.org/people/Fran%20Freesound/sounds/649818/