1. WEATHER FORECASTING

2. Cold Front What type of weather does this front bring? Cooler temperatures clouds precipitation (quick, intense, and more localized storms) wind

3. Warm Front What type of weather does this front bring? Warmer temperatures Clouds precipitation (longer lasting and spread out) wind Warm Front and Cold Front Video http://www.youtube.com/watch?v=huKYKykjcm0 http://www.youtube.com/watch?v=huKYKykjcm0

4. L H Weather Symbols Low Pressure -Cloudy skies -Steady precipitation -Counterclockwise rotation of air High Pressure -Clear/Sunny skies -Calm weather -Clockwise rotation of air

5. Warm and Cold Front Clip Warm and Cold Fronts Weather fronts move from the west to the east because the prevailing winds are from the west (Prevailing Westerlies). How do weather patterns generally move across the United States? Why?

6. Wind symbols No wind - Calm Winds 25 miles per hour to the east Full line- 10 miles per hour Half line – 5 miles per hour Arrow – direction wind is going

7. Weather Instruments Barometer Rain Gauge Hygrometer Anemometer Wind Vane Sling Psychrometer

8. Barometer Measures atmospheric air pressure

9. Rain Gauge Used to measure the amount of liquid precipitation in a set amount of time.

10. Sling Psychrometer Measures humidity (water vapor in the air) using a wet thermometer and dry thermometer.

11. Wind Vane Used to measure wind direction

12. Anemometer Used to measure wind velocity/speed

13. Hygrometer Used to measure moisture content in the atmosphere (humidity)