What is low atmospheric pressure?

Answer 1

Atmospheric pressure is caused by the weight of the air in the earths atmosphere that is above you. At sea level this pressure is said to be 1 bar or one atmosphere. Now, as you go up a mountain there is less air above you and thus the atmospheric pressure is less and the pressure you experience because of your altitude is said to be your local atmospheric pressure. However, the earths atmosphere is heated by the sun and moves in eddies to the poles where it is cooled and flows back to the equator - this is called the weather. When you have hot air above you it is less heavy than cold air so, as the atmosphere blows over you, the pressure of the air changes and you can work out if the air above you is hot or cold by comparing the measure you measure against your local atmospheric pressure.

Answer 2

In this case, we would be talking about Low Pressure Systems. In Low Pressure Systems, they allow for cloud formation in the atmosphere. They are represented by a red "L" on a weather map. Normally with Low Pressure Systems, you will find storms. However, just because there is a low pressure system around, you won't always get a storm. Remember, a low pressure system allows for cloud formation, you won't always get rain or clouds, it just allows it.

Answer 3

Low atmospheric pressure refers to the condition where the air pressure at a given location is below the average pressure at sea level. This can lead to weather patterns such as cloudy skies, precipitation, and potentially unstable conditions. Low pressure systems are often associated with stormy weather and can influence the movement of winds and the formation of weather fronts.

Answer 4

Standard atmospheric pressure is 29.92 inches of Mercury. Anything below that is technically "low."