Other
Bureau of Meteorology: The Weather Map
Explains what a weather map is and how it is prepared. Describes what weather maps show, typical weather patterns in Australia, the use of weather charts, temperature, and wind speed.
University of Illinois
University of Illinois Extension: Ww2010: Atmospheric Pressure
This site from the University of Illinois describes what air pressure is and how it is measured. Explains high and low pressure areas, isobars, and how pressure changes with height.
Other
Classzone: Weather Forecasters Use Advanced Technologies [Pdf]
An excerpt from an earth science textbook. The chapter shown here covers concepts about how weather data is collected, displayed and how meteorologists forecast fronts and storms.