Weather Glossary



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CAPE Convective Available Potential Energy. A measure of the amount of energy available for convection. CAPE ...
Capping Inversion Alternate term for Cap; a layer of relatively warm air aloft, usually several thousand feet ...
Chinook This is a region-specific term used for Foehn Winds in the lee of the Rocky ...
Cirrostratus A cloud of a class characterized by a composition of ice crystals and often by ...
Cirrus High-level clouds (16,000 feet or higher), composed of ice crystals and appearing in the form ...
Closed Low A low pressure area with a distinct center of cyclonic circulation which can be completely ...
Clutter Radar echoes that interfere with observation of desired signals on the radar display. ...
Cold Air Funnel A funnel cloud or (rarely) a small, relatively weak tornado that can develop from a ...
Cold Front A zone separating two air masses, of which the cooler, denser mass is advancing and ...
Cold Occlusion A frontal zone formed when a cold front overtakes a warm front and, being colder ...
Cold Pool A region of relatively cold air, represented on a weather map analysis as a relative ...
Confluence A pattern of wind flow in which air flows inward toward an axis oriented parallel ...
Continental Air Mass A dry air mass originating over a large land area ...
Convection n meteorology, the term is used specifically to describe vertical transport of heat and moisture ...
Convective Condensation Level The level in the atmosphere to which an air parcel, if heated from below, will ...
Convergence A contraction of a vector field; the opposite of divergence. Convergence in a horizontal wind ...
Cumulus detached clouds, generally dense and with sharp outlines, showing vertical development in the form of ...
Cutoff Low A closed upper-level low which has become completely displaced (cut off) from basic westerly current, ...
Cyclogenesis The formation or intensification of a cyclone or low-pressure storm system ...
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City Weather

Toronto
Light Rain 3°C
Halifax
Scattered Snow Showers -1°C
Quebec
Partly Cloudy -2°C
Ottawa
Mostly Cloudy -3°C
Montreal
Areas of Fog -4°C
Winnipeg
Partly Cloudy -2°C
Calgary
Partly Cloudy 5°C
Yellowknife
Mostly Clear N/A
Saskatoon
Cloudy 2°C
Vancouver
Light Rain 7°C

Last Update: 6:00 AM Mar 25 2017