The sudden volume of water delivered by a thunderstorm creates unique challenges:
Summary Table: Stratiform vs. Convective (Gewitterregen) Rain Stratiform Rain (Steady) Convective Rain (Gewitterregen) Nimbostratus Cumulonimbus Onset Sudden/Abrupt Area Widespread Localized/Small-scale Duration Hours to Days Minutes to Hours Associated With Warm fronts, low pressure Cold fronts, summer heat Gewitterregen
: As the atmosphere warms, it can hold more moisture (roughly 7% more for every degree Celsius). This is leading to an increase in the frequency and intensity of extreme rainfall events globally. 4. Safety and Preparation The sudden volume of water delivered by a
: Inside the cloud, turbulent updrafts and downdrafts cause water droplets and ice crystals to collide. This interaction generates static electricity (leading to lightning) and allows droplets to grow rapidly into heavy raindrops or hail. 2. Characteristics of the Rain : The process begins with warm
: Modern cities are often unprepared for the sheer volume of water. Extreme rainfall can overwhelm drainage systems, leading to flooded streets and damaged basements.
: The process begins with warm, moist air rising rapidly from the Earth's surface. This can be triggered by intense solar heating (thermal convection), a cold front pushing under warm air (frontal uplift), or air being forced up a mountain (orographic uplift).