Answer:
It measures wind speed and direction.
Step-by-step explanation:
The Doppler Radar detects the direction of storms by using the Doppler effect to measure the velocity of moving objects, including precipitation in the atmosphere. As the radar waves encounter precipitation, some of the energy is scattered back to the radar. The radar measures the frequency shift of the returned signal, which is caused by the motion of the precipitation. This shift provides information about the velocity of the precipitation, which can be used to determine wind speed and direction in the storm.