Weather Forecast

6. stalls over an area which usually produces long periods of rain
11. an air mass with greater atmospheric pressure than the surrounding air masses; air moves away from the center of the high pressure, traveling in a clockwise direction (northern hemisphere) and a counterclockwise direction (southern hemisphere)
12. the day-to-day state of the atmosphere
14. measures wind speed
15. the border between an advancing cold air mass and a retreating warm air mass
17. global air circulation patterns within the atmosphere held to Earth by gravity and warmed as heat radiated from Earth

1. measures air temperature
2. an air mass with less atmospheric pressure than the surrounding air masses; air moves toward the area of low pressure, traveling in a counterclockwise direction (northern hemisphere)and a clockwise direction (southern hemisphere)
3. a map or chart that shows the weather conditions at a specific point in time over a specific region
4. measures wind direction
5. measures relative humidity
7. the force exerted by the atmosphere on Earth's surface by the weight of the air above the surface
8. an instrument that measures the amount of atmosphere pressure
9. the boundary between an advancing warm air mass and a receding cooler air mass
10. body of air extending over a large area; develops & retains characteristics such as pressure, temperature, and humidity
13. a form of energy that spreads out as it travels
16. amount of water vapor or moisture content in air