A lone tractor sits submerged in Greely, Colorado.

A new river cuts across Highway 34 in Greely, Colorado during September's massive flooding across the state.

September's floods caused an estimated $2 billion in damage to homes and commerce in Colorado.

An immediate effect of many major disasters is the sudden severing of travel routes, like this road in Weld County, Colorado.

Highways 53 and 388 wash out next to one another in Weld County, Colorado.

A farmhouse submerged in the waters near Greely, Colorado.

Flood waters cut along the path of a road in Lyons, Colorado.

An entire neighborhood sits under water in Longmont, Colorado.

A curtain of smoke nearly obscures the glowing remnants of homes destroyed by the Black Forest wildfire.

According to Wark, large fires can create strong, uni-directional winds that can significantly affect flying conditions.

Fire retardant is dashed on the hills in an attempt to stall the Black Forest wildfire near Colorado Springs.

A swath of homes destroyed in the Black Forest wildfire near Colorado Springs in June 2013.

The sun peers through smoke rising up from the Waldo Canyon wildfires near Colorado Springs in June 2013.

Some homes that were spared, and others that weren't so lucky in the Waldo Canyon wildfire near Colorado Springs.

The Black Forest Wildfire destroyed 486 homes and damaged 37, fewer than the local sheriff's department had feared.

Scars left in the landscape by the West Fork Complex fire in Mineral County, Colorado in July 2013.

A formerly lush forest reduced to ghostly skeletons by the West Fork Complex Fire.

An island of Aspen groves survives among the devastation of the West Fork Complex fire of July 2013.