The rear part of the storm is where tornadoes are likely to spawn as the downdraft in the flanking line meets the rotating updraft. |
Various different temperatures and wind interactions at different altitudes can cause a rotating updraft called a mesocyclone. |
A solitary chicken hawk circled so slowly on a high updraft of air that he looked to be hanging motionless, a small brown kite. |
There was no one to overhear them save a speckled chicken hawk circling lazily on the updraft from the mountain. |
The best view of a mesocyclone is normally from a location east of the updraft, looking west. |
When I related to them how, on one jump, I was caught in a thermal updraft and was actually going up instead of down, they laughed in disbelief. |