Minimal light (from the moons and stars).
Full fog, visibility 20 feet.
Overgrowth on inanimate objects, moss on tree trunks, plants have normal health, 67% extra plants for this level.
Noticeable wind, lots of lightning, rain, cool winds.
There are drizzles with a few caverns flooded, one level more rain, normal river strength for this level.
Wood unreliable, 67% decreased tensile strength for this level, ground sturdy.
If plants permit there is vine-thatching over smaller gashes, cavern entrances are fully crusted over, crust marginally easier to remove, vine-thatchings sturdier.
Normal landscape.
Vines can trap passerbys, poisons are more potent (poison ivy can make you seriously ill) and animals slightly more aggressive, twice as powerful blood moon.