View source for Pressure

Falling pressure indicates poor weather coming.  Increase in pressure indicates better weather. </br>
When flying from east to west, favourable winds will be to the south of a high or to the north of a low.
[[File:Flying around a high.jpg]]
==ISA==
29.92" HG or 1013.2 millibars or 101.3kpa at 15°C.
A column of air one square inch in cross-section, measured from sea level to the top of the atmosphere, would weigh approximately 14.7lbs.<ref>[http://en.wikipedia.org/wiki/Atmospheric_pressure]Atmospheric Pressure - Wikipedia</ref>
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"From <b>high</b> to <b>low</b>, look out below."  This means that flying from a high pressure system to a low pressure system, you will be at a lower altitude than your altimeter reads if you never adjusted the pressure setting.  The same applies to flying from warm air to cold air.

==References==
<references />
[[Category: Weather]]