Pyrocumulus clouds, also known as “fire clouds,” “are plumes of smoke ... “capping a smoke plume with a cauliflower-looking cloud,” the San Francisco Chronicle reported.

Scientists later described an ice-capped cloud that reached 7 miles into the ... Bukaty/AP) The interaction between wind, the fire plume and topography determines whether a tornado will develop ...

Wildfires with turbulent plumes can produce clouds that in turn can produce ... The interaction between wind, the fire plume and topography determines whether a tornado will develop, he said.

Wildfires with turbulent plumes can produce clouds that in turn can produce ... The interaction between wind, the fire plume and topography determines whether a tornado will develop, he said.