What are the two primary weather radar products used for precipitation and wind information?

• A. Reflectivity and velocity.
• B. Temperature and humidity.
• C. Pressure and moisture.
• D. Wind direction and cloud type.

Answer: (A)

The main idea is that weather radar provides two essential measurements: reflectivity and velocity. Reflectivity shows how much radar energy is returned by precipitation particles, which correlates with the amount and intensity of precipitation and helps you map where it is. Velocity uses the Doppler shift of the returned signal to determine motion toward or away from the radar, giving you information about wind speeds along the beam and the overall wind field.

These two products together give precipitation structure and wind information. The other options list atmospheric state variables (temperature, humidity, pressure) or concepts (wind direction, cloud type) that aren’t direct primary radar products for precipitation and wind.