Majority of storm chasers are meteorologists who study and predict weather patterns. They forecast where and when a particular storm is likely to occur. They analyze past and current data to determine a precise location. They also use visualization by looking at the patterns of the clouds. They commonly use a variety of sources to predict weather, such as daily outlooks, satellite and radar maps, maps of temperatures and dewpoints, computer models, wind charts, and watches and warning information. Storm chasers use a variety of equipment, including computers, satellites, portable weather stations, Global Positioning Systems (GPS), video cameras, and anemometers to measure wind. Typically while in the field, storm chasers use cell phones with data connections to view the latest weather information. Depending on the area, there are certain storm chasing seasons where severe weather occurs more frequently.
Some storm chasers have even developed special vehicles that they believe can withstand the strength of a tornado. For example, the Tornado Intercept Vehicle 2 (TIV2) weighs about 8 tons and has other special features that would make it hard — but not impossible! — for a tornado to lift it off the ground.
Once in the path of the storm, storm chasers place scientific equipment that they hope will be picked up by the tornado. Then they retreat as quickly as possible to a safe place. If the storm picks up the equipment, the scientists can use the data it records to better understand what happens inside these dangerous storms.