High preasure, Low preasure related to weather?

Question

When were told a high preasure system is moving in. Would it be correct to think this is a cold front. As colder air is higher density. So high preasure = cold and low preasure = hot??

Answer 1

In a nutshell....
Heavy precipitation and overcast conditions are often associated with low-pressure systems.
High pressure systems are associated with clear, cool weather .
High and low pressure systems mix to produce the weather.
Cooler is is more dense but that does not necessarily mean a low pressure system.
Arctic air masses are high pressure systems. They trigger sudden drops in temperature.
Tornadoes are low pressure systems that cause a lot of damage.
Each system is associated with a typical weather but that can change quickly.

Answer 2

Nope -- high pressure signals warm weather, low pressure brings cold weather. Think of it this way: if the pressure is low, it means cold air (which is denser, thicker than warm air) has to flow in to even things out. When the pressure is high, it means the cold air is pushed away.
And cold air is thicker because any gas is compressed at lower temperatures. In a room or car, for example, the colder air falls to the bottom and the hot air rises to the ceiling. same thing goes for steam on your coffee.

Answer 3

Its probably worth explaining a little more in simple terms. In
a high pressure the air is stable and descends towards the ground, causing the increase in local pressure. Any moisture in the air is vapourised as the air warms. Therefore, no clouds.

Conversely, in a low pressure the air is unstable and rising. Any water vapour will eventually condense out and form clouds.

Answer 4

These people are not well informed. High pressure doesn't mean warm weather. Many times, it just means clear weather.
We get high pressure systems in Germany, and it gets cold, from the wind coming from Russia.

Answer 5

I have to differ with the first two answers and side with our Germany-based friend. Very basically, high pressure means fair weather, low pressure means dirty weather. Bear in mind this is just a rule of thumb and differences occur in each one, but it will be true much of the time.

Answer 6

no, a higher pressure means a higher temperature... as anything gets put into higher pressure, the molecules hit eachother more regularly, this means more energy, more energy means more heat...
High pressure front is the same as a warm front, and probobly clear weather....Low pressure is the same as a cold front and expect rain or at least clouds...