Question: How do you know the path of the [RADAR] beam all times?

Aside from when AP is seen on the radar, we don’t! To know the path of the beam would require us to know the exact composition of the moisture, temperature and pressure in the atmosphere, up to 70,000 feet, every minute or so, within about 240 miles of the radar and that capability does not exist.

This is one reason why we always look at storms from different directions. The chance of two radars with identical atmospheric conditions are nil so it is wise to get views of storms from nearby radars to compare with the closest view to take into account beam spreading and refraction.

IF I WERE PULSING OVER 600 MILLION WATTS OF MICROWAVE RADIATION OVER MY POPULATION 24/7….

I WOULD WANT TO KNOW!!!!!!!!!!!!!!!!!!!!!!!!!!