Pressure is force divided by area. An increase in pressure is due to atmospheric gas (particles) being forced downwards. Due to thermodynamics this increase in air pressure leads to heating ( pv=nRT ) thus preventing condensation (no clouds = sun). Low pressure is due to air moving upwards leading to expansion and therefore cooling of the gas promoting condensation (clouds = rain)
Here is how low pressure relates to bad weather... given the right conditions.
High pressure generally relates to "nicer" weather, while low pressure often relates to bad weather. This is because these pressure systems have their own general characteristics. One characteristic I like to use while observing weather conditions such as pressure and making forcasts is the rotational direction of these pressure systems. For example, low pressure systems rotate counterclockwise in the northern hemisphere, while high pressure systems rotate clockwise. With low pressure systems, counterclockwise rotation causes converging winds. This means that the winds are coming together. Where are they coming from? Pressure moves from high pressure systems to low pressure systems. Therefore, moving air causes wind. When this air converges (as in a low pressure, counterclockwise system), due to its rotation, the air gets forced downward. In general, when this air is forced to the ground and has nowhere to go, it pushes out and back up around the center of the low pressure system. This upward movement of air causes instability in the atmosphere, which equals clouds, especially when the air being drawn in (converging air) has a different temperature than the air that it is replacing. Warm air below cooler air equals instability and rising thermals (rising hot air). There are many variables left out in this simple explaination, but in general it quickly answers the question. High pressure systems diverge air and therefore are the opposite. One has to remember, however, that these systems can interact in very complicated and unpredictable ways.
-RJS
No. Generally low pressure brings clouds and precipitation.
High pressure situations are generally associated with fair, sunny weather. As high pressure is an area of sinking air, and air tends to dry out as it sinks, leaving sunny skies.
The weather system associated with a cold but sunny day is typically high pressure. High pressure systems bring clear skies and dry conditions, which result in cold temperatures during the winter months.
Sunny hot days without rain.It whould bring warm hot sunny days without a chance of precipitation (rian snow sleet or hail)
A high pressure system usually produces fair weather and clear skies. Air descends and stabilizes in high pressure systems, leading to decreased cloud formation and calm conditions.
When the weather is sunny and bright, air pressure tends to be higher. High pressure systems are generally associated with clear skies and calm weather conditions.
True. High air pressure usually indicates stable, dry air which is associated with clear skies and sunny weather.
No. Generally low pressure brings clouds and precipitation.
Usually a high-pressure area brings sunny weather.
Sunny
Pressure.
eat my dick
When it is bright and sunny outside, it is typically an indication that high air pressure is present. When pressure begins to drop, a disturbance can be near and weather conditions will begin to deteriorate.
It tells you if its low or high. Its dim when its low. Bright when it's high.
It was as bright as a sunny turd
High pressure situations are generally associated with fair, sunny weather. As high pressure is an area of sinking air, and air tends to dry out as it sinks, leaving sunny skies.
The weather system associated with a cold but sunny day is typically high pressure. High pressure systems bring clear skies and dry conditions, which result in cold temperatures during the winter months.