Floods caused by heavy rain or outflow of rivers result in severe crop losses worldwide.
This occurs as the storm's inflow becomes separated from its rain-cooled outflow.
Once the flow of warm and moist air is cut off from thunderstorms and their associated tornadoes, normally by the thunderstorm's own rain-cooled outflow boundary, the storms begin to dissipate.
Incidences of flooding have been increased in recent years due to the extreme weather events such as unexpected cyclonic heavy rains and outflows of rivers that have inundated wider areas across many regions in Asia.
"It wasn't the classic kind of supercell you get in Tornado Alley," he said, "but I saw a video, and it looked like there was a lot of rain and kind of an outflow gust front.
A scenario involving rainfall for 3 h and 150-mm accumulated rain water, with no water outflow from the park, was considered in this study.
The erosion may in turn result in increased outflow, more than can be replenished by rain or snowmelt, according to a study by a group of Canadian coastal engineers.
When an outflow boundary forms due to a shallow layer of rain-cooled air spreading out near ground level from the parent thunderstorm, both speed and directional wind shear can result at the leading edge of the three-dimensional boundary.
A large shield of cirrus and cirrostratus typically accompanies the high altitude outflow of hurricanes or typhoons, and these can make the underlying rain bands and sometimes even the eye difficult to detect in satellite photographs.
Outflow at "Shaft" was only moderately increased by the 4.6 mm of rain.
In the low levels of the troposphere, outflow radiates from thunderstorms in the form of a wedge of rain-cooled air, which is visible as a thin rope-like cloud on weather satellite imagery or a fine line on weather radar imagery.
