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Liquid forms of precipitation include rain and drizzle and dew. Rain or drizzle which freezes on contact with a surface within a subfreezing air mass gains the preceding adjective "freezing", becoming the known freezing rain or freezing drizzle. Slush is a mixture of both liquid and solid precipitation.
Rainfall (including drizzle and rain) is usually measured using a rain gauge and expressed in units of millimeters (mm) of height or depth. Equivalently, it can be expressed as a physical quantity with dimension of volume of water per collection area, in units of liters per square meter (L/m 2 ); as 1L = 1dm 3 = 1mm·m 2 , the units of area (m ...
Showers come from individual clouds as well as from groups of these. In mid-latitude regions, showers are often associated with cold fronts , often found along and behind it. However they can be embedded into a continuous rain episode when there is presence of band of conditional symmetric instability in an otherwise stable air mass.
When rain or drizzle glides across these areas, it falls into the colder air below and freezes on contact. This occurs most frequently in the valleys of the Northeast.
"At the very least, there will be episodes of rain, drizzle and fog," Sosnowski said, who added that a general 2-4 inches of rain will likely fall along the central Gulf coast, with 1-2 inches of ...
Drizzle is a light precipitation which consists of liquid water drops that are smaller than those of rain – generally smaller than 0.5 mm (0.02 in) in diameter. [1] Drizzle is normally produced by low stratiform clouds and stratocumulus clouds. Precipitation rates from drizzle are on the order of a millimetre (0.04 in) per day or less at the ...
Freezing drizzle alone does not generally result in significant ice accumulations due to its light, low-intensity nature unlike its rain counterpart. However, even thin layers of slick ice deposited on roads as black ice can be very slippery and cause extremely hazardous conditions resulting in vehicle crashes.
A virga, also called a dry storm, is an observable streak or shaft of precipitation that evaporates or sublimates before reaching the ground. [1] A shaft of precipitation that does not evaporate before reaching the ground is known in meteorology as a precipitation shaft.