2 Weather ForecastingMeteorologists are scientists who study the causes of weather and try to predict it.They analyze data and prepare weather forecasts.Meteorologists interpret information from a variety of sources includingLocal weather observersMaps and chartsComputersBalloonsSatellitesWeather stationsRadar
3 Weather ForecastingWeather forecasting is important because it helps us predict weather in the future.
4 Weather BalloonsCarry instruments high into the troposphere and stratosphere.The instruments measure temperature, air pressure, and humidity.
5 SatellitesCameras on weather satellites in the exosphere can photograph Earth's surface, clouds, storms, ice and snow cover.These images are then transmitted to meteorologists on Earth, who interpret the information.
6 Computer Forecasts Computers can now gather data about temperature, air pressure, wind speed, and other factors.Computers process large amounts of information quickly to help forecasters make predictions.
7 Weather Service MapsWeather maps are important because they provide visual information with regards to weather.They can tell us where “fronts” are.On some weather maps, you see curved lines.They tell us about isobar and isotherm lines.These lines connect places where certain conditions—temperature or air pressure—are the same.
8 Newspaper Weather Maps Standard symbols on weather maps show fronts, areas of high and low pressure, types of precipitation, and temperatures.