WEATHER FORECASTING

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

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

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

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?

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

Weather Instruments Barometer Rain Gauge Hygrometer Anemometer Wind Vane Sling Psychrometer

Barometer Measures atmospheric air pressure

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

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

Wind Vane Used to measure wind direction

Anemometer Used to measure wind velocity/speed

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