Weather Map Symbols

Feather Wilson 1st period

The diffrent kinds of symbols

Defintions

A front is when a boundary separating two masses of air of different densities, and is the principal cause of meteorological phenomena. A cold front is when a boundary of an advancing mass of cold air, in particular the trailing edge of the warm sector of a low-pressure system. A warm front is when a boundary of an advancing mass of warm air, in particular the leading edge of the warm sector of a low-pressure system. A jet stream is when a variable band of very strong, predominantly westerly air currents encircling the globe several miles above the earth. High pressure is a condition of the atmosphere in which the pressure is above average. Low pressure is a condition of the atmosphere in which the pressure is below average.