Acid Rain contains chemicals derived from pollutants that have been released into the atmosphere which then combines with water vapor and falls back to Earth in the form of acidic precipitation. Due to extremely high levels of pollution and nuclear fallout, acid rain can be deadly if you are accidentally caught in the middle of a storm with no protection.

Acid rain contains high levels of hydrogen ions, which can have a hazardous effect on plants, animals, people and even buildings when exposed. Acid rain is caused by emissions of sulfur dioxide and nitrogen oxide, which react with the water molecules in the atmosphere to create acid.

Acid rain can rip the paint off of buildings, bridges and vehicles and with high concentrations it can melt the flesh off any living creature caught outside without proper protection. You can identify acid rain storms from the chemical color of the clouds.

Acid Rain = 1 Acid DMG per Combat Round


Flash floods occur when a sudden rush of water, caused by heavy rainfall, pours down a narrow gully or over a sloping surface. These frequently occur in mountainous desert wastelands and in cities along hill sides and in valleys. Flash floods can occur with little to no warning and are known to move cars, topple buildings and bridges and kill all plant and animal life within the affected area.

Since terraforming on Mars has created a rudimentary atmosphere complete with rain and hail storms, flash flooding has become a major concern for miners and other colonists working outside.


Sometimes a storm cloud may contain small balls of ice, between ½ inch to 4 inches in size, instead of the normal rain or acid rain. Hail storms can cause significant damage to rooftops, vehicles, plants and animals as well as people who are caught outside.

½ - 1 inch Hail = 1d6 DMG per Combat Round
1 – 2 inch Hail = 2d6 DMG per Combat Round
2 – 3 inch Hail = 3d6 DMG per Combat Round


Hurricanes are violent tropical, cyclonic storms with winds typically exceeding 75 mph that usually occurs off the western and southern coasts of the United States of Canada. The Caribbean Islands are especially prone to hurricane activities as well as Great Southern Marshlands. Hurricanes are known to cause flooding, and destruction of property due to high winds.


Lightning flashes usually occur in the atmosphere between clouds, or between clouds and the ground. Lightning strikes have been known to start fires, especially in dry arid regions such as the Rocky Mountains. Lightning storms occur more frequently on Venus than they do on Earth, and are even less common on Mars.
Lightning Strike = 4d6 Electric DMG


Mudslides are similar to avalanches and landslides, with one small exception, mud instead of water or snow. They are caused by rain storms and usually occur simultaneously with Flash Floods and can be just as dangerous.


Tornadoes are violent wind storms that occur during the spring and summer seasons, especially in the regions between the United Mexican Territories up to the Confederate States of North America, between the Great Salt Sea to the east and the Rocky Mountains to the west. This area is known as “Tornado Country” and there have been reports of up to 100 tornadoes touching down at any given time near the Denver Enclave. Tornadoes are characterized by a long, funnel-shaped cloud that extends from the sky all the way to the ground.

Tornadoes are also common occurrences on Venus, and are far more massive and deadly than those found on Earth. Massive dirt-devils form on Mars, which effectively sandblast the surface of the red planet. Martian colonies are constantly monitoring the area surrounding their facilities for signs of these tornadoes.