Which data types are used together to assess storm intensity and movement?

• A. Reflectivity alone.
• B. Velocity and echo tops.
• C. Reflectivity, velocity, echo tops, and polarization.
• D. Temperature data.

Answer: (C)

Combining multiple radar data types gives a complete view of both how strong a storm is and how it’s moving. Reflectivity shows where the precipitation is heaviest and helps indicate storm structure and potential hail cores. Velocity reveals the motion of air within and around the storm, including winds and rotation that signal movement and severity. Echo tops indicate how high the storm’s updrafts reach, which relates to intensity and potential for growth. Polarization adds information about the shape and type of hydrometeors (rain, hail, etc.), refining intensity estimates and improving interpretation of the storm’s structure. Using all four together provides the most accurate assessment of both storm intensity and movement.

The other options miss key pieces: reflectivity alone doesn’t show movement; without velocity and polarization you lose movement and hydrometeor-type insight; and temperature data isn’t a radar product, so it doesn’t contribute to assessing storm intensity or movement.