Synoptic Chart
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Low Pressure Systems and Hectopascals
Winds rotate clockwise around low pressure systems.
Low pressure system:
wind rotates clockwise
Pressure is measured in hectopascals (hPa).
The numbers on a synoptic chart are in hectopascals.
Weather forecasters measure pressure to make a synoptic chart.
High pressure system = 1032 hPaLow pressure system = 995hPa
