Overview
Thunderstorm is one of Valheim's environment / weather states, identified internally as ThunderStorm. Force the world into this environment with the cheat command env ThunderStorm, and return to natural cycling with resetenv. Environment changes are useful for screenshots, testing biome-specific events, or just resetting bad sailing weather.
About
ThunderStorm is the high-intensity thunderstorm weather state with heavy rain, lightning, and very high wind. It occurs at 3-7% chance in most biomes and is dangerous on the Ocean.
Commands
Sets the current environment to Thunderstorm.
Resets the environment to its natural state.