Cold front

Cold Front transition zone from warm air to cold air A cold front is defined as the transition zone where a cold air mass is replacing a warmer air mass. Cold fronts generally move from northwest to southeast.

Cold Fronts 1. Cold Fronts slope on the average 1:80 miles. This means that 80 miles into the surface position of the front, the frontal boundary is about 1 mile above the ground.

Cold front: cold fronts occur when a colder air mass approaches a warmer air mass. The colder air, being denser, cuts a wedge under the less dense warmer air, lifting it and finally overtaking it. Cold fronts move rapidly.

Cold Front: Front whose movement is such that a mass of colder air replaces a warmer one. The passage of a cold front is normally characterized on the surface of the Earth by a fall in temperature and a change in the direction of the wind.

Cold Front-The discontinuity at the forward edge of and advancing cold air mass that is displacing a warmer and often higher in moisture air mass.

Cold Front: The boundary between two different air masses where cold air pushes warm air out of the way and brings colder weather. Condensation: ...

Cold front A boundary separating cold and warm air masses at which the cold air is advancing. Combined seas or combined waves ...

COLD FRONT: The boundary between a cold air mass that is advancing and a relatively warmer airmass. Generally characterized by steady precipitation followed by showery precipitation. COMBINED SEAS: The combined height of swell and wind waves.

cold front: when a colder, higher pressure air mass moves so that cold air replaces warmer air. Storm activity is often associated with the moving in of a cold front.

Cold Front- The leading edge of a colder mass of air that displaces a warmer mass of air. Condensation- The change of vapor to liquid. Condensation Nuclei- Small particles in the air around which water vapor condenses.

COLD FRONT - An advancing mass of cold air. The boundary formed by two air masses where cold air is replacing warmer air. CONDENSATION - A change of state of water from a gas (water vapor) to a liquid.

Cold Front - A boundary between two air masses, one cold and the other warm, moving so that the colder air replaces the warmer air. Condensation - The change of water vapor to liquid water, as when fog or dew forms.

Cold Front- the leading edge of a cold air mass as it moves toward warmer air; its movement is characterized by a drop in temperature and humidity after the front passes.

Cold Front - an advancing edge of a cold air mass Cold Pool - a region of relatively cold air, represented on a weather map analysis as a relative minimum in temperature surrounded by closed isotherms.

COLD FRONT- A synoptic scale boundary between cold and warm air. The cold air is displacing the warm air.

Cold Front - a front where the colder air is advancing and the warm air is retreating Warm Front - a front where the warmer air is advancing and the cold air is retreating Stationary Front - one where nobody seems to be making any progress ...

Cold Front - A transition zone where a cold air mass advances and replaces a warm air mass. Condensation - The process by which water vapor becomes a liquid. Convection - Warm air rising or cold air sinking or both.

Cold Front Passage CFS In hydrologic terms, Cubic Feet per Second - the flow rate or discharge equal to one cubic foot (of water, usually) per second. This rate is equivalent to approximately 7.48 gallons per second.

Cold front- The leading edge of a colder air mass. On weather maps it is depicted in blue with sharp barbs showing the direction of movement.

Cold front: a zone separating two air masses, of which the cooler, denser mass is advancing and replacing the warmer.

cold front—Any non-occluded front which moves in such a way that colder air replaces warmer air. condensation—See change of state.

cold front - Any nonoccluded front, or portion thereof, that moves so that the colder air replaces the warmer air; that is, the leading edge of a relatively cold air mass. Compare cold type occlusion.

Cold Front The leading edge of a relatively colder airmass which separates two air masses in which the gradients of temperature and moisture are maximized.

Cold Front - The leading edge of a cooler airmass. Cold-air Funnel - A funnel cloud or (rarely) a small, relatively weak tornado that can develop from a small shower or thunderstorm when the air aloft is unusually cold (hence the name).

Cold frontThe leading edge of a cold air mass. Condensation Process by which water changes phase from a vapor to a liquid.

Cold Front- A narrow transition zone separating advancing colder air from retreating warmer air. The air behind a cold front is cooler and typically drier than the air it is replacing.

COLD FRONT The leading edge of an advancing cold air mass that is under running and displacing the warmer air in its path.

Pseudo-Cold Front - A boundary between a supercell's inflow region and the rear-flank downdraft (or RFD).

When the cold front moves faster than the warm front, and as it overtakes the warm front, the warm sector is closed and a combine front forms. This process is called occlusion. The front formed in this way is called an occluded front. Frost ...

BACK DOOR COLD FRONT A cold front that moves south-southwest out of Canada into the Northeastern United States along the Atlantic Seaboard.

They are often along and behind cold fronts and gust fronts, being associated with cool moist air, such as an outflow from a thunderstorm. When observed from a distance, they are sometimes mistaken for tornadoes.

CFCChlorofluorocarbonCFPCold Front PassageCFSIn hydrologic terms, Cubic Feet per Second - the flow rate or discharge equal to one cubic foot (of water, usually) per second. This rate is equivalent to approximately 7.48 gallons per second.

Also used for short duration mesoscale events such as a strong cold front, gravity wave, squall line, etc., lasting less than 2 hours and producing winds or gusts of 34 knots or greater. SNsnow ...

Triple PointThe intersection point between two boundaries (dry line, outflow boundary, cold front, etc.), often a focus for thunderstorm development.

This front will separate air behind the cold front from air ahead of the warm front. This is a common process in the late stages of wave-cyclone development, but is not limited to occurrence within a wave cyclone.

A cold front occurs when a cold air mass moves into an area occupied by a warmer air mass. Moving at an average speed of about 20 mph, the heavier cold air moves in a wedge shape along the ground.

Fronts are also identified: a 'classical' depression appearing in the western North Atlantic, with an identifier 'A', will have its warm front labelled 'A', and its cold front 'B'.

occluded front A composite of two fronts, formed as a cold front overtakes a warm or quasi-stationary front.

OcclusionIt means a merging of cold front and warm front. It usually developes with low pressure systems starting inside the core and merging further, because the cold front moves faster than the precedent warm front.

Outflow Boundary - A storm-scale or mesoscale boundary separating thunderstorm-cooled air (outflow) from the surrounding air; similar in effect to a cold front, with passage marked by a wind shift and usually a drop in temperature.

with the passage of a warm front, the temperature and humidity increase, the pressure rises, and although the wind shifts (usually from the southwest to the northwest in the Northern Hemisphere), it is not as pronounced as with a cold frontal passage.

This sometimes happens when a cold front overtakes a warm front (forming an occluded front), lifting the warmer air away from the surface. It is usually relatively short-lived, but shows up as an unusual layer of warm air on an upper air soundiing.

If a cold front rides up and over a warm front, it is a WARM OCCLUSION. If a cold front slides under the warm front, it is a COLD OCCLUSION.

Related terms: cold front and warm front Frost Weather: The covering of ice crystals that forms by direct sublimation on exposed surfaces whose temperature is below freezing. Frozen Precipitation: see.

Front A transition zone between two differing air masses. Basic types are cold front, warm front, and stationary front. Thunderstorms can form in association with any of these fronts, although fronts are not necessary for thunderstorm development.

O0070 Occluded front Frontal occlusion A composite of two fronts, formed as a cold front overtakes a warm front or quasi-stationary front. O0080 Occlusion The process of the formation of an occluded front. O0090 Ocean station vessel - OSV (O0100) ...

A front is the boundary between two different air masses. A cold front is the leading edge of an advancing cold air mass, while a warm front is the trailing edge of a retreating cold air mass. FROST ...

Arctic Screamer: Strong, cold winds from North or Northwest, often following cold front.

Front - An interface or transition zone between two air masses of different density, and therefore (usually) of different temperature. A moving front is named according to the advancing air mass, e.g. cold front if colder air is advancing.

See also: Front, Air, Weather, Temperature, Surface