Rainstorm
The sky opens up and heavy torrents of rain soak the landscape for 19 (3d4+12) hours.
Nature. A Nature check reveals the number of hours the rain will continue.
Potent Weather. The rainstorm’s effects spread across the landscape in a 20-mile radius, filling the area with heavy rain. Adventurers can only hear sounds within 60 feet of them (except for loud, explosive noises).
Slippery. Deluges of rain turn the area into difficult terrain .
The party can make an Engineering check to hastily construct improvised shelter or a group Survival check to push through the storm and endure the elements.
Critical Failure: The party loses 1 day of travel time in the rainstorm. Each adventurer finds that water has ruined 6 (2d4+1) Supply and they suffer a level of fatigue .
Failure: The party loses 7 (3d4) hours of travel time in the rainstorm and 5 (2d4) Supply .
Success: The party pushes through the worst of the rainstorm after 4 (1d4+2) hours of travel.
Critical Success: The party pushes through the worst of the rainstorm after just 2 (1d4) hours of travel.