Final answer:
NEXRAD is updated every 5 to 10 minutes in Precipitation Mode and every 10 minutes in Clear Air Mode.
Step-by-step explanation:
NEXRAD, which stands for Next Generation Weather Radar, is an advanced weather surveillance radar system used by the National Weather Service (NWS) in the United States. In Precipitation Mode, the radar is updated every 5 to 10 minutes, depending on the severity of the weather. In Clear Air Mode, the radar is updated every 10 minutes. These frequent updates allow meteorologists to monitor and track the movement of precipitation and severe weather events in real-time.