Weather Glossary


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Radar Reflectivity The sum of all backscattering cross-sections (e.g., precipitation particles) in a pulse resolution volume divided ...
Radiation Inversion Used interchangably with Nocturnal Inversion; a temperature inversion that develops during the night as a ...
Radiosonde An instrument that is carried aloft by a balloon to send back information on atmospheric ...
Rawinsonde A radiosonde that is tracked to measure winds. ...
Relative Vorticity The sum of the rotation of an air parcel about the axis of the pressure ...
Ridge An elongated area of relatively high atmospheric pressure; the opposite of trough. ...
Roll Cloud A low, horizontal tube-shaped arcus cloud associated with a thunderstorm gust front (or sometimes with ...
Rossby Waves A series of troughs and ridges on quasi-horizontal surfaces in the major belt of upper ...
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City Weather

Sunny 8°C
Mostly Sunny 12°C
Partly Cloudy 7°C
Mostly Cloudy 11°C
Mostly Cloudy 9°C
Snow Showers 0°C
Cloudy 4°C
Mostly Sunny -3°C
Cloudy 0°C
Mostly Sunny 12°C

Last Update: 6:00 PM Apr 24 2017

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.