Water content or moisture content is the quantity of water contained in a material, such as soil (called soil moisture), rock, ceramics, crops, or wood. Water content is used in a wide range of scientific and technical areas, and is expressed as a ratio, which can range from 0 (completely dry) to the value of the materials' porosity at saturation. It can be given on a volumetric or mass (gravimetric) basis. (Wikipedia, 2024. Water content. https://en.wikipedia.org/wiki/Water_content)
One or more sudden electrical discharges, manifested by a flash of light (lightning) and a sharp or rumbling sound (thunder). (WMO, 2017. Thunderstorm. https://cloudatlas.wmo.int/en/thunderstorm.html)
