What you're hearing
Half of the storm's energy is in the low end, below 250 Hz, so it sounds fullest on headphones or good speakers. Drag it further away and it becomes a storm over the next valley; bring the window rain closer and you're indoors watching it.
Want it heavier? Add the Downpour or the Tin roof from the Rain group. Calmer? Send the thunder away and keep the rain. The sleep timer fades everything out after 15 to 90 minutes. These sounds were made with AI and are marked AI in the list.