Weather Glossary



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Zonal Flow Large-scale atmospheric flow in which the east-west component (i.e., latitudinal) is dominant. The accompanying meridional ...
Wind Shear The rate at which wind velocity changes from point to point in a given direction ...
Wet Bulb Zero the height where the wet-bulb temperature goes below 0C. It is important because WBZ heights ...
Warm Advection Transport of warm air into an area by horizontal winds. Low-level warm advection sometimes is ...
Warm Core Low A low pressure area which is warmer at its center than at its periphery. Tropical ...
Vorticity A measure of the rotation of air in a horizontal plane. Positive (counter-clockwise or cyclonic) ...
Virga Streaks or wisps of precipitation falling from a cloud but evaporating before reaching the ground. ...
Vertically Stacked System A low-pressure system, usually a closed low or cutoff low, which is not tilted with ...
Vertical Wind Sheer the change in the wind's direction and speed with height. This is a critical factor ...
Veering Winds Winds which shift in a clockwise direction with time at a given location (e.g., from ...