Weather Glossary



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Temperature Inversion a layer of the atmosphere in which air temperature increases with height. When the layer's ...
Terminal Aerodrome Forecast This NWS aviation product is a concise statement of the expected meteorological conditions at an ...
Thermal High Area of high pressure that is shallow in vertical extent and produced primarily by cold ...
Thermal Low Area of low pressure that is shallow in vertical extent and produced primarily by warm ...
Thermocline As one descends from the surface of the ocean, the temperature remains nearly the same ...
Thermodynamics In general, the relationships between heat and other properties (such as temperature, pressure, density, etc.) ...
Total-totals Index A stability index and severe weather forecast tool, equal to the temperature at 850 mb ...
Towering Cumulus A large cumulus cloud with great vertical development, usually with a cauliflower-like appearance, but lacking ...
Triple Point The intersection point between two boundaries (dry line, outflow boundary, cold front, etc.), often a ...
Tropical Wave A trough or cyclonic curvature maximum in the trade wind easterlies. The wave may reach ...
TROWAL TROugh of Warm Air ALoft. Typically used during winter weather, it is a "tongue" of ...
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Weather can be active anytime when you make your visit to Canada. With each season offering its own unique conditions to observe. Booking coach or business class flights it is always a great time to visit Canada and its vast display of weather.