Weather Forecasts Learn about weather map symbols and how they are used to make predictions of the weather.

Weather is the mix of events that happen each day in our atmosphere. Weather is different in different parts of the world and changes over minutes, hours, days and weeks.

When a front passes over an area, it means a change in the weather. Many fronts cause weather events such as rain, thunderstorms, gusty winds and tornadoes.

Even with disruptions like weather fronts and storms, there is a consistent pattern to how air moves around our planet’s atmosphere. This pattern, called atmospheric circulation, is caused …

Learn about weather map symbols and how they are used to make predictions of the weather.

In this video from the U.S. National Weather Service, a scientist explains how weather balloons are used to collect data that improves weather predictions. Watch and learn how weather …

In addition to the hundreds of balloons launched every 12 hours, weather balloons are used in many research projects to examine aspects of the atmosphere that are difficult to access.

In this computer-based virtual lab, students will learn about the layers of Earth's atmosphere by launching virtual weather balloons to collect temperature and pressure data at various altitudes.

This equation helps us explain how weather works, such as what happens in the atmosphere to create warm and cold fronts and storms, such as thunderstorms. For example, if air pressure …

How Weather Works Learn how temperature, humidity, wind, and pressure influence the weather.