You only need to give them a command to merge, and the cloud will produce rain.

It is 7 o'clock and the early-morning clouds have produced a hard, steady rain.

These clouds drift over the land and produce rain.

These clouds also produced reverse lightning over which the sprites were seen.

In time, a cloud no bigger than a man's hand produced a thunderstorm.

Even way down here, in the relative peace of spring training, players wonder what the latest cloud will produce.

The clouds pressed heavily upon them, but produced no rain.

The intent of this process is to cause the clouds to produce rain or snow.

The clouds in the picture look like they might produce rain.

The cloud can produce virga, precipitation that evaporates before reaching the ground.