How do meteorologists track severe storms?

Answer:

Storm Tracking

Radar is the most useful tool these days. You can track position and rain intensity directly, and it can be usedto discern cloud top heights, which is another useful measure of overall storm intensity. Under some circumstancestornadoes can be detected by the shape of the echo, and Doppler radar can find wind shear that is often associatedwith strong wind conditions.
There is still no substitute, however, for boots on the ground. Weather spotter networks, which combinefixed observers with mobile units, are the ground truth about the location and severity of an event.