Rain and Hail liquid and ice precipitation
Rain develops when growing cloud droplets become too heavy to remain in the cloud and as a result, fall toward the surface as rain.
A rain shadow (or more accurately, precipitation shadow) is a dry region on the surface of the Earth that is leeward or behind a mountain with respect to the prevailing wind direction.
Will a Rain Guage Measure Snow?
If it snows where you live, most rain gauges will not be able to measure the snow fall; snow will block the opening of the collection funnel. However, special snow gauges are available to measure this.
* * Articles and pictures about: "Acid Rain" * *
Read articles and view pictures about "Acid Rain"
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rain-rate gauge"Same as rain-intensity gauge.
rain shadow"A region of sharply reduced precipitation on the lee side of an orographic barrier, as compared with regions upwind of the barrier.
rain - Precipitation in the form of liquid water drops that have diameters greater than 0.5 mm, or, if widely scattered, the drops may be smaller.
Rain-Free Base - A horizontal, dark cumulonimbus base that has no visible precipitation beneath it. This structure usually marks the location of the thunderstorm updraft.
RAIN-FREE BASE
A dark, horizontal cloud base with no visible precipitation beneath it. It typically marks the location of the thunderstorm updraft.
Rain and disease
Excessive rain not only causes floods with their often widespread devastation, but may also assist in the spread of disease. Wet seasons produce large areas of stagnant water, which can become breeding grounds for mosquitos.
rain gauge- Any instrument used to measure the total amount of precipitation that falls upon a given unit area during a specified time interval. Gauges can be adapted to collect snow for the determination of liquid water equivalent of snowfall.
RAIN Precipitation in the form of liquid water droplets greater than 0.5 mm. If widely scattered, the drop size may be smaller. It is reported as "R" in an observation and on the METAR. The intensity of rain is based on rate of fall.
Rain Foot - [Slang], a horizontal bulging near the surface in a precipitation shaft, forming a foot-shaped prominence. It is a visual indication of a wet microburst.
Rain: Rapidly forming puddles, down pipes flowing freely, some spray visible over hard surface.
Drizzle: Window and road surfaces streaming with moisture. Visibility generally between 400 and 1000 m.
Rain Shadow: The region on the lee side of a mountain or mountain range, where precipitation is decreased compared to the windward side.
Rain - water drops greater than 0.5 mm in diameter falling from the sky.
Relative humidity - the ratio of vapour pressure to the vapor pressure that would happen if the air were saturated without changing the temperature.
RAIN GAGE: Instrument for measuring the depth of water from precipitation that is assumed to be distributed over a horizontal, impervious surface and not subject to evaporation.
RAIN: Liquid water droplets that fall from the atmosphere, having diameters greater than drizzle.
RAINBOW: Optical phenomena when light is refracted and reflected by moisture in the air into concentric arcs of color.
Rain- a type of precipitation that is in the form of water droplets larger than 0.5mm.
Rawinsonde- a balloon that is tracked by radar to measure wind speeds and wind directions in the atmosphere.
Rain gauge An instrument designed to measure the amount of rain that falls during a given time interval.
Rain shadow The region on the leeside of a mountain where the precipitation is noticeably less than on the windward side.
Rain Gauge - An instrument used to measure rainfall amounts.
Reflectivity - Radar term referring to the ability of a radar target to return energy; used to estimate precipitation intensity and rainfall rates.
Rain
Precipitation of liquid water particles, either in the form of drops of more than 0.5 mm in diameter, or of smaller widely scattered drops.
Rain
Precipitation in the form of liquid water drops that have diameters greater than that of drizzle.
Rain gage
A device-usually a cylindrical container-for measuring rain-fall.
RAIN - Precipitation of liquid water particles which, in contrast to drizzle, are widely separated and larger in size.
RAINBOW- Optical phenomenon when light is refracted and reflected by moisture in the air into concentric arcs of color.
Rain A form of precipitation consisting of liquid water droplets having diameters between 0.5 and 5.0 mm (0.02 and 0.2 in).
Rain gauge An device - usually a cylindrical container - for collecting and measuring rainfall.
rain—A form of precipitation; drops are larger than drizzle and fall in relatively straight, although not necessarily vertical, paths as compared to drizzle which falls in irregular paths.
rain shower—See shower.
Rain Forest An evergreen woodland of the tropics distinguished by a continuous leaf canopy and an average rainfall of about 100 inches per year. Rain forests play an important role in the global environment.
Rain - Precipitation in the form of liquid drops the diameter of which must be .5 millimeters or greater. Implies a steady precipitation that might last for several hours.
RA- Rain
RADIATIONAL COOLING- The earth's surface cooling by emitting longwave radiation. The best radiational cooling occurs on clear nights.
acid rain: rain having a pH lower than 5.6 (the pH of natural rainwater), usually caused by sulfuric acid and/or nitric acid from air pollution.
acid rain: rain that has become acidic after contact with certain atmospheric gases (primarily sulfur dioxide, carbon dioxide, and nitrogen oxides).
afforestation: process of establishing a forest.
Acid rain
Rain which is acidic as a result of pollution
Air pressure ...
Acid rain Cloud or rain droplets containing pollutants, such as oxides of sulfur and nitrogen, to make them acidic.
Acid Rain
Rain containing relatively high concentrations of acid-forming chemicals that have been released into the atmosphere and combined with water vapor; harmful to the environment.
ACLD ...
heavy rain - Rain with a rate of accumulation exceeding a specific value that is geographically dependent.
height - See altitude, elevation.
helm - See helm wind.
Excess Rain
In hydrologic terms, effective rainfall in excess of infiltration capacity.
Excessive Heat ...
Excess Rain: Effective rainfall in excess of infiltration capacity.
Rain: Water vapor condensed in the atmosphere that falls to the earth in the form of drops (more than 0.5 mm [1/50 inch] in diameter). Depending on the average cycle of its accumulation in the rain gauge, it can be light (up to 2.5mm), moderate 2.
Rain or snow with a pH value of less than 5.6.
Adiabatic Temperature Change ...
Rain gauge- An instrument used to measure the amount of precipitation, consisting of an open-ended can topped by a collecting funnel and having a collecting tube and measuring scale inside.
RAIN: Liquid water precipitation generally with a diameter greater than 0.5 mm.
RELATIVE HUMIDITY: The percent of the amount of water vapor in the air compared to the capacity for water vapor in the air.
Rain- Liquid precipitation with drops larger than .02 inches in diameter.
Rainbow- An arc or circle of colored light caused by the refraction of light by water droplets in the air.
Rain: precipitation that falls to earth in drops more than 0.5 mm in diameter.
Rain - Liquid precipitation in the form of water drops that falls from clouds for several hours.
Rain or drizzle that falls in liquid form and then freezes upon striking a cold object or ground. Both can produce a coating of ice on objects which is called glaze.
Front(6)
The transition zone between two distinct air masses.
Rain Gauge - An instrument used to measure rainfall amounts.
Rainbow - Optical phenomena when light is refracted and reflected by moisture in the air into concentric arcs of color.
Rain that falls as liquid and freezes upon impact to form a coating of glaze on the colder ground or other exposed surfaces. It is reported as "FZRA" in an observation and on the METAR.
FRESH WATER ...
Rain and drizzle have drops much larger than the wavelength of visible light, so they will not show evident diffraction effects. They will, however, exhibit the rainbow and other reflection-refraction phenomena, as will ice crystals.
Rain Gauge - An instrument used to measure rainfall amounts.
*Rain-free Base - A dark, horizontal cloud base with no visible precipitation beneath it. It typically marks the location of the thunderstorm updraft.
RAIN - Liquid water falling from the sky.
RAIN SHADOW - A dry region downwind of high mountains where very little moisture is left in the air after passing over the mountains. Usually causes desert regions, especially in places like the Southwest US.
acid rain- rain with an abnormally high acid content caused by burning of fossil fuels, which release sulfur and nitrogen oxides.
FREEZING RAIN
Rain that falls as liquid and freezes upon impact to form a coating of glaze on the colder ground or other exposed surfaces. It is reported as "FZRA" in an observation and on the METAR.
Freezing Rain Advisory- Issued when freezing rain or freezing drizzle is forecast but a significant accumulation is not expected. However, even small amounts of freezing rain or freezing drizzle may cause significant travel problems.
Freezing rain - Rain that falls as liquid water but freezes on contact with a cold surface.
FREEZING RAIN: Rain which falls as liquid then freezes upon impact, resulting in a coating of ice on exposed objects.
Freezing Rain - See Glaze.
Front - A boundary (discontinuity) separating air masses of different densities, one warmer and often higher in moisture content than the other.
Acid rain Precipitation that carries to earth sulfuric and nitric acid accumulated from air pollutants. Acre-foot The volume of water required to cover one acre to a depth of one foot; 43,560 cubic feet.
Coronal Rain(Abbrev. CRN) In solar-terrestrial terms, material condensing in the corona and appearing to rain down into the chromosphere as observed at the solar limb above strong sunspots.
THUNDER SNOW A wintertime thunderstorm from which falls snow instead of rain. Violent updrafts and at or below freezing temperatures throughout the atmosphere, from surface to high aloft, discourage the melting of snow and ice into rain.
Acid PrecipitationPrecipitation, such as rain, snow or sleet, containing relatively high concentrations of acid-forming chemicals that have been released into the atmosphere and combined with water vapor; harmful to the environment.
Unstable AirAir that is able to rise easily, and has the potential to produce clouds, rain, and thunderstorms.
 See also: Precipitation, Weather, Air, Cloud, Water
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