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Message: <blockquote data-quote="Celebrim" data-source="post: 6292013" data-attributes="member: 4937">Sadly, the game is very light on these rules.  I've been meaning to do a write up myself.    The big things that matter in a forest fire are how dry the fuel is and how high is the wind speed.If you are in a typical temperate forest in a typical spring, the fire is going to spread very slowly and probably will never become a true crown fire.   This is a small ground fire doing 1d6 damage per round you are exposed.  Whether or not giant spider webs provide unusually good fuel is something you'll have to decide.   Once the fire crowns (that is, goes up into the leaves and starts burning the whole tree) or if there is a lot of dry dead wood on the ground, damage goes up to 2d6 per round of exposure plus you have a heat exposure effect.In general, the rules imply that fuel naturally spreads among dry tinder at 5'/round in all adjacent spaces (in a cross pattern). That you can easily outrun or just out walk.  But 'common sense' suggests that wind speed is going to matter.   I'd suggest that wind speed spreads a fire an additional 5' in the direction of the wind per round for each 3mph of the wind.  So a typical breezy 15mph wind on typical tinder means the fire spreads about 30' per round - only about half the speed of a fast walk, or about full speed through difficult terrrain.I'd have the smoke extend out about 30' in front of the fire in the direction of the wind or 90' if the fire crowns, further if you have a lot of wind.  Heat damage should extend out in front of the flames by an equivalent amount, but in general I think you get away fairly easily unless you are in an arid climate and the wind is high.  The difficulty of the terrain and the possibilty of choking on smoke in the first few rounds are the main hazards in your description.  Of course, you can make this as lethal as you like by adjusting the parameters.In general, I'd expect the PC's can outrun a typical forest fire unless you are in high summer during a draught with a high wind.  Alternately, if you can get about sufficiently far from the fire - say 30 yards - you probably can weather it.  Heat exhauastion might be a problem in a long fire, but if you are in water that should probably be ok.   A cave should be ok provided its deep enough that it doesn't fill up with smoke.</blockquote>

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