High Pressure and Low Pressure

Weather refers to the state of the atmosphere at a specific time, including conditions like: air pressure, wind temperature, and the amount of moisture in the air.

See related Clouds

• An area of cool, dryer air
• Air sinks at the center of a high pressure system.
• Weather usually results in clear, sunny skies.

• An area of warmer air that is also more moist (contains more water vapor)
• Air rises at the center of the low pressure system
• Weather usually results in cloud with precipitation.

High Pressure

• (North America: High Pressure system moves outward from the center and clockwise)
• (Southern America: Air in High Pressure systems move outward from the center and counterclockwise)

Low Pressure

• (North America: Low Pressure system moves inward toward the center and counterclockwise)
• (South America: Low Pressure system moves inward toward the center and clockwise)