Freezing Rain supercooled droplets freezing on impact
Ice storms can be the most devastating of winter weather phenomena and are often the cause of automobile accidents, power outages and personal injury.
freezing rain"Rain that falls in liquid form but freezes upon impact to form a coating of glaze upon the ground and on exposed objects. In aviation weather observations, this hydrometeor is encoded ZR.
Freezing Rain: Rain that falls as liquid drops but freezes upon impact with horizontal or vertical surfaces. Freezing rain is characterized as either glaze or rime depending on the nature of the ice.
Freezing Fog Advisory- Issued when fog may reduce visibilities to less than 1/4 mile. In addition, the fog will freeze on exposed surfaces and cause black ice formation on roadways, bridges and sidewalks.
Freezing rain
Rain that becomes supercooled and freezes on impact with the ground or with objects on the earth's surface. Freezing rain can cause great damage, due to the weight of ice accumulating on structures in extreme events.
FREEZING PRECIPITATION Precipitation that is liquid, but freezes upon impact with a solid surface, such as the ground or other exposed surfaces. Related terms: freezing rain and freezing drizzle ...
FREEZING POINT/FREEZE
The process of changing a liquid to a solid. The temperature at which a liquid solidifies under any given set of conditions. Pure water under atmospheric pressure freezes at 0°C or 32°F. It is the opposite of fusion.
FREEZING LEVEL: The altitude in the atmosphere where the temperature drops to 32F.
FREEZING RAIN: Rain which falls as liquid then freezes upon impact, resulting in a coating of ice on exposed objects.
FREEZING POINT: Temperature of solidification of a liquid under given conditions.
HEADWIND: A wind blowing in a direction opposite to the course of a moving object. Often used when referring to winds affecting ballistics.
Freezing rain - rain that freezes after it hits the ground or other object and forms clear ice.
Fronts - baroclinic divisions in the atmosphere. Zones between air masses where temperature changes quite rapidly with horizontal distance.
Freezing Level- the altitude in the atmosphere at which the temperature drops to thirty-two degrees Fahrenheit.
Freezing Rain or Drizzle- is precipitation that falls in liquid form but freezes upon contact with cold objects.
freezing point: the temperature at which a substance changes from a liquid to a solid. For water, it is 0°C or 32°F.
front: boundary where two air masses with different temperatures and moisture content meet.
Freezing Rain - Rain which freezes on impact to form a coating of ice upon the ground and on the objects it strikes.
freezing—The change of liquid water to ice.
melting—The change of ice to liquid water.
sublimation—The change of (a) ice to water vapor or (b) water vapor to ice. See latent heat.
Freezing rain and freezing drizzle 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.
Freezing Point
The temperature at which a liquid solidifies under the influence of a particular set of conditions.
Freezing - The change of state from a liquid to a solid.
Freezing Nuclei - Solid pardcles that have a crystal form resembling that of ice; they serve as cores for the formation of ice crystals.
Freezing Rain - See Glaze.
FREEZING RAIN (ZR)- Liquid precipitation that freezes after reaching the earth's surface ...
Freezing rain Supercooled raindrops that freeze on contact with cold surfaces.
Friction The resistance an object encounters as it comes into contact with other objects; in fluids known as viscosity.
Freezing Rain Advisory This product is issued by the National Weather Service when freezing rain or freezing drizzle causes significant inconveniences, ...
Freezing Level
The altitude at which the air temperature first drops below freezing.
Freezing Rain ...
Freezing Drizzle- Drizzle that falls in liquid form and then freezes upon impact with the ground or an item with a temperature of 32 degrees Fahrenheit or less, possibly producing a thin coating of ice.
Freezing level This is a term used in meteorology to refer to the lowest altitude in the atmosphere over a given location at which the air temperature is 32 degrees F (0 degrees C). In other words, the height of the 32 degree temperature surface.
FREEZING DRIZZLE
Drizzle, falling as a liquid, but freezing on impact with the colder ground or other exposed surfaces. It is reported as "FZDZ" in an observation and on the METAR.
FREEZING FOG ...
Freezing rain earlier this week created hazardous road conditions throughout the valley. Giannetta said the first light flakes should start falling about 7 a.m. today. "I think we'll see it after daybreak, he said of expected snowfall.
Freezing fog occurs when liquid fog droplets freeze to surfaces, forming white rime ice. This is very common on mountaintops which are exposed to low cloud.
Freezing Rain
NOAA National Weather Service - Cite This Source - This Definition
Browse Related Terms: Acid rain, Freezing Rain, FZRA, R, RA, Rain Gauge
Z\/R Relationship - permalink - collapse ...
Freezing- The change in a substance from a liquid to a solid state.
Freezing Nuclei- Particles suspended in the air around which ice crystals form.
Freezing Rain- Supercooled drops of water that turn to ice when they hit a cold surface.
FREEZING RAIN: Rain which falls as liquid then freezes upon impact of a surface, resulting in a coating of ice on exposed objects.
Freezing Fog
Fog with a temperature below freezing that deposits rime on contact with objects.
Freezing Level ...
FREEZING LEVEL - The altitude or elevation in the atmosphere where the air temperature is cold enough for liquid water to freeze and become ice at 32 degrees (F).
Adfreezing The process by which one object becomes adhered to another by the binding action of ice.
Heavy Freezing SprayAn accumulation of freezing water droplets on a vessel at a rate of 2 cm per hour or greater caused by some appropriate combination of cold water, wind, cold air temperature, and vessel movement.
latent heat of freezing-latent heat of melting
water molecules absorb 80 calories per gram to change from the solid (ice) to the liquid (water) state at 0 °C ...
CelsiusA temperature scale in which zero is the freezing point of water and one hundred is the boiling point.
SEA ICE Ice that is formed by the freezing of sea water. It forms first as small crystals, thickens into sludge, and coagulates into sheet ice, pancake ice, or ice floes of various shapes and sizes.
SnowPrecipitation in the form of ice crystals, mainly of intricately branched, hexagonal form and often agglomerated into snowflakes, formed directly from the freezing [deposition] of the water vapor in the air.
SPC also puts out MCDs for hazardous winter weather events on the mesoscale, such as locally heavy snow, blizzards and freezing rain (see below).
Freeze WarningIssued during the growing season when surface temperatures are expected to drop below freezing over a large area for an extended period of time, regardless whether or not frost develops.
Effects on the weather may include cold temperatures, freezing precipitation, and extensive cloud coverCold Air FunnelA funnel cloud or (rarely) a small, ...
accumulation (glacial) All processes, which include snowfall, condensation, avalanching, snow transport by wind, and freezing of liquid water, that add snow or ice to a glacier, floating ice, or snow cover.
rime - A white or milky and opaque granular deposit of ice formed by the rapid freezing of supercooled water drops as they impinge upon an exposed object.
Bright Band - a distinct feature observed by a radar that denotes the freezing level of the atmosphere.
A distinct feature observed by a radar that denotes the freezing level of the atmosphere. The term originates from a horizontal band of enhanced reflectivity that can result when a radar antenna scans vertically through precipitation.
Frost damages plants by freezing the water that is present in the plants cells. When this occurs the cell will expand and then burst causing damage to the plant.
Freezing levels
These AIRMET items are considered to be widespread because they must be affecting or be forecast to affect an area of at least 3000 square miles at any one time.
CELSIUS TEMPERATURE SCALE A temperature scale where water at sea level has a freezing point of 0°C (Celsius) and a boiling point of +100°C. More commonly used in areas that observe the metric system of measurement.
Glaze A coating of ice, generally clear and smooth but usually containing some air pockets, formed on exposed objects by freezing of a film of super-cooled water deposited by rain, drizzle, fog, or possibly condensed from super-cooled water vapor.
A liquid-in-glass thermometer containing an alcohol liquid, such as ethanol. Because alcohol has a low freezing point, ...
Celsius temperature scale: A temperature scale where the freezing point of water occurs at 0 ?C and the boiling point at 100?C, at sea level.
Supercooled cloud droplets Liquid cloud droplets observed at temperatures below freezing.
Superior mirage See Mirage.
Supersaturated air A condition that occurs in the atmosphere when the relative humidity is greater than 100 percent.
Kelvin (K) scale - A temperature scale where 0º K represents absolute zero, the freezing point of water is 273º K, and the boiling point of water is 373º K.
frost: water that has condensed at a temperature below the freezing point, thus has turned to
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: just this descent would turn a freezing 32 °F into a pleasant daytime 54 °F, and the warming is usually greater than this, since the winds must climb to over 12,000 feet on their way.
Fahrenheit - the standard scale used to measure temperature in the United States; in which the freezing point of water is thirty-two degrees and the boiling point is two hundred and twelve degrees.
All are formed within an unstable environment (see Q/A 2A.4), and all require the following to be in place: (i) Instability through a reasonable depth of the troposphere; preferably (but NOT necessarily) extending above the freezing level; ...
Frost: Deposit of ice on the surface when the air temperature gets in contact with it below the water freezing point (0ºC).
Fahrenheight Temperature scale designed by the German scientist Gabriel Fahrenheit in 1709, based upon water freezing at 32 °F and water boiling at 212 °F under standard atmospheric pressure. Compare with centrigrade.
Unless specified otherwise, relative humidity is reported with respect to water rather than ice because most hygrometers are sensitive to relative humidity with respect to water even at subfreezing temperatures, ...
 See also: Temperature, Air, Water, Surface, Weather
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