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<blockquote data-quote="Norfleet" data-source="post: 1108338" data-attributes="member: 11581">When a cloudkill hits a barrier, assuming the barrier is impermeable, such as a wall of force, it stops, obviously unable to travel anywhere, being a gaseous cloud and all. Eventually, it will come to a hemispherical clump against the wall.As for non-perpendicular barriers, that's an application of physics. You have a 20 foot high heavier than air &quot;cloud&quot;. It trundles along at 10 feet per round, a round being 6 seconds, which gives us a speed of 1.67 ft/s. Gravity is 32 ft/s^2. Gravity will overcome any part of the cloud attempting to &quot;climb&quot; at its 1.67 ft/s rate in less than a second. This means that any barrier the cloud runs into that is in excess of 20 feet in height will basically stop cold, and a barrier of less than that will result in the top of the cloud piling over it, moving over the barrier, and then dropping to the ground on the other side, presumably hauling the rest of the cloud with it by magic. The cloud then piles up against the barrier. What form it takes upon piling up against the cloud is open to interpretation, depending on whether you wish to consider the fact that the cloud is obviously forced to retain a certain density and mass by magic, or else it would disperse radially in the absence of wind, rather than travelling as a cohensive cylindrical burst, or whether it's forced to maintain its cylindrical shape, and the parts which intersect with solid objects are simply truncated.</blockquote>

[QUOTE="Norfleet, post: 1108338, member: 11581"] When a cloudkill hits a barrier, assuming the barrier is impermeable, such as a wall of force, it stops, obviously unable to travel anywhere, being a gaseous cloud and all. Eventually, it will come to a hemispherical clump against the wall. As for non-perpendicular barriers, that's an application of physics. You have a 20 foot high heavier than air "cloud". It trundles along at 10 feet per round, a round being 6 seconds, which gives us a speed of 1.67 ft/s. Gravity is 32 ft/s^2. Gravity will overcome any part of the cloud attempting to "climb" at its 1.67 ft/s rate in less than a second. This means that any barrier the cloud runs into that is in excess of 20 feet in height will basically stop cold, and a barrier of less than that will result in the top of the cloud piling over it, moving over the barrier, and then dropping to the ground on the other side, presumably hauling the rest of the cloud with it by magic. The cloud then piles up against the barrier. What form it takes upon piling up against the cloud is open to interpretation, depending on whether you wish to consider the fact that the cloud is obviously forced to retain a certain density and mass by magic, or else it would disperse radially in the absence of wind, rather than travelling as a cohensive cylindrical burst, or whether it's forced to maintain its cylindrical shape, and the parts which intersect with solid objects are simply truncated. [/QUOTE]

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