In the movie Safe Haven it is suggested that Doppler radar is used for predicting rainfall:

Roger: Well, it's gonna rain, you know?

Alex: What? It's not gonna rain. I checked the weather report. It said a five percent chance of rain.

Roger: Yeah, well, the weather report's wrong.

Alex: They have instruments for this. Doppler, Super Doppler, all kinds of other crap.

How?

How is Doppler radar used in rain prediction?

Here is the dialogue from Safe Haven English movie.

Roger: Well, it's gonna rain, you know?

Alex: What? It's not gonna rain. I checked the weather report.It said a five percent chance of rain.

Roger: Yeah, well, the weather report's wrong.

Alex: They have instruments for this. Doppler, Super Doppler, all kinds of other crap.

In the movie Safe Haven it is suggested that Doppler radar is used for predicting rainfall:

Roger: Well, it's gonna rain, you know?

Alex: What? It's not gonna rain. I checked the weather report. It said a five percent chance of rain.

Roger: Yeah, well, the weather report's wrong.

Alex: They have instruments for this. Doppler, Super Doppler, all kinds of other crap.

How?