A body of air extending over a large area (1,000 miles or more) that develops and retains specific characteristics of pressure, temperature, and humidity
The layer of gas surrounding a planet that is held in place by gravity
The border between an advancing cold air mass and a retreating warm air mass
A prediction or estimate of future events
Winds that act as a heat transfer system due to the unequal heating of Earth’s surface
Features on the surface of Earth, such as mountains, hills, dunes, oceans, or rivers
Directional movements of ocean water; surface currents result from steady winds over the ocean surface; deep currents result from density variations due to temperature and salinity differences
Based on probability
The boundary between an advancing warm air mass and a receding cooler air mass
The day-to-day state of the atmosphere
A map or chart that shows the weather conditions at a specific point in time over a specific region
Similar weather for a certain number of days