"Black avalanche" after wildfire

Video from Arizona has flown around the net faster than it moves along the bottom of the dried-up catchment of the Canyada del Oro watershed. The mass, which looks frightening and makes you move, is a huge moving stream of burnt vegetation and debris. Dark color it gives soot and ashes. And the reason for its appearance was large fires caused by lightning.

The fire, which began on 5 June, covered more than 48,377 hectares of the national park, sparing neither pine and spruce forests nor cacti. The cause of large-scale fires was lightning. Under the influence of fire in the structure of the soil there were certain changes and on the surface rose metals and toxins, which are not washed away by water. Even small precipitation was enough for the new structure to turn into a rushing stream of burnt vegetation mixed with ash.

Such flows are one of the most dangerous consequences of fires. Fast-moving and destructive, almost unpredictable, they negatively affect the vegetation and life of aquatic life, cause the closure of drainage channels and can lead to damage to structures.