Original: A weather radar , or weather surveillance radar ( WSR ) , is a type of radar used to locate precipitation , calculate its motion , estimate its type ( rain , snow , hail , etc. ) , and forecast its future position and intensity .
Simplified: A weather radar is a type of radar used to show where precipitation is . Weather radar can tell the movement of precipitation , what type it is ( rain , snow , hail , etc. ) , and forecast its future .