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Chapter 10: Game Mastering / Environment / Climate

Precipitation

Source Core Rulebook pg. 517 2.0
Precipitation includes rain as well as colder snow, sleet, and hail. Wet precipitation douses flames, and frozen precipitation can create areas of snow or ice on the ground. Drizzle or light snowfall has little mechanical effect beyond limited visibility.

Visibility

Source Core Rulebook pg. 517 2.0
Most forms of precipitation impose circumstance penalties on visual Perception checks. Hail often is sparser but loud, instead penalizing auditory Perception checks. Especially heavy precipitation, such as a downpour of rain or heavy snow, might make creatures concealed if they’re far away.

Fatigue

Source Core Rulebook pg. 517 2.0
Precipitation causes discomfort and fatigue. Anything heavier than drizzle or light snowfall reduces the time it takes for characters to become fatigued from overland travel to only 4 hours. Heavy precipitation can be dangerous in cold environments when characters go without protection. Soaked characters treat the temperature as one step colder (mild to severe, severe to extreme; see Temperature below).

Thunderstorms

Source Core Rulebook pg. 517 2.0
High winds and heavy precipitation accompany many thunderstorms. There’s also a very small chance that a character might be struck by lightning during a storm. A lightning strike usually deals moderate electricity damage, or major electricity damage in a severe thunderstorm.