High atmospheric pressure vs low pressure?

Question

I am a pilot, and my instructor had originally told me that high pressure systems are associated with cold/"bad" weather, and that low pressure is associated with good weather. This seems to go against everything that I thought was true. should i hire a different instructor?

Answer 1

High pressure systems are associated with clear skies, no precipitation, etc. because they are sinking mechanisms. Low pressure systems are the opposite because they are rising mechanisms. Your instructor is incorrect.

Answer 2

Perhaps you misunderstood or he did not state it precisely.  When it comes to flying small aircraft there is no good vs bad weather when it comes to low or high pressure systems.  There is good and bad associated with both.  For instance, high pressure brings clear skies and cool dense air, but it also brings wind and turbulence.  Low pressure brings nice calm air but poor visibility and precipitation.

If he actually believes what you have stated, he is mistaken.

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Answer 3

maybe, because that is false, it's the other way around

Answer 4

You are correct.  Get back to your instructor and let him/her know before he/she mislead anymore students.

Answer 5

When a low pressure system comes in contact with a high pressure system thunderstorms result.  Reason, the low pressure system contain moisture whilr the high pressure systems are dry and cold.  Fact is one produces cold the other rain

Answer 6

Well here is the real science behind low and high pressure systems.

Low pressure systems always bring some form of precipitation, stormy weather and weather fronts. The reason why this occurs is that in the center of a low pressure system, there is convection that brings up moisture upwards, and that is why clouds can form, gather together, and then that convection allows moisture to come up and gather in the clouds. And by the way, low pressure systems occur in all types of weather, whether it is 100 degress or even ten below.

High pressure pressure systems work in the opposite manner compared to low pressure systems in a way. In the high pressure system, instead of convection pulling things upward, pressure is exterted downwards towards the earth's surface. That is why, when a high pressure system is present, there are very little to no clouds present, especially in the center of the system. But, just like a low pressure system, a high pressure system can form if its 100 degrees or ten below.