Understanding a Station Plot

Posted by on Monday, December 12, 2016

A weather symbol is plotted if at the time of observation, there is either precipitation occurring or a condition causing reduced visibility. 

Wind is plotted in increments of 5 knots.

Sea-level pressure is plotted in tenths of millibars.

The pressure trend has two components, a number and symbol, to indicate how the sea-level pressure has changed during the past three hours.

The amount that the circle at the center of the station plot is filled in reflects the approximate amount that the sky is covered with clouds. 

The Team

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