Thunderstorm Environment Code

The environment code for Thunderstorm in Valheim, with the env command to force this weather and resetenv to return to the natural cycle.

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.

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.

Command reference: env
Command reference: resetenv

Commands

Sets the current environment to Thunderstorm.

Resets the environment to its natural state.

More Environments

Creature spawn conditions

Full reference

2 entries

Creature spawn conditions
Creature	Biome & terrain	Time & weather	Progression & limits
Neck	Meadows 0–10 m altitude · Inside or outside forest	Rain Thunderstorm Lightrain Day & night	No required world key Up to 8 nearby · Groups of 2–4 · 0–2 stars permitted · 30 sec between attempts · 100% attempt chance
Serpent	Ocean -1,000–-5 m altitude · Inside or outside forest	Thunderstorm Rain Day & night	No required world key Up to 1 nearby · Groups of 1 · 0 stars permitted · 16 min 40 sec between attempts · 5% attempt chance

Neck

Biome & terrain: Meadows
0–10 m altitude · Inside or outside forest
Time & weather: Rain
Thunderstorm
Lightrain
Day & night
Progression & limits: No required world key
Up to 8 nearby · Groups of 2–4 · 0–2 stars permitted · 30 sec between attempts · 100% attempt chance

Serpent

Biome & terrain: Ocean
-1,000–-5 m altitude · Inside or outside forest
Time & weather: Thunderstorm
Rain
Day & night
Progression & limits: No required world key
Up to 1 nearby · Groups of 1 · 0 stars permitted · 16 min 40 sec between attempts · 5% attempt chance

These are world-spawn rules. Raids and location spawners have separate rules on their own pages. An interval is an attempt schedule, not a guaranteed respawn timer; valid terrain and local population checks still apply.

Biome weather association

Weather effects

Temperature effects can be countered by shelter, clothing, and resistance effects.

Wet weather: Yes
Freezing: No
Cold: At night
Daylight: Always dark
Wind intensity: 80%–100% of the game's wind scale

Game data source

The full settings include internal fields and inactive defaults. The sections above explain the values relevant to gameplay.

Download full game settings (JSON)