The present atmospheric conditions on Earth indicate that the eruption would cause torrential rains and the resulting floods should seriously disrupt transportation and defense measures.

— Retik Ruler Of The Moon (Roy Barcroft)

10 seconds sound clip from Radar Men from the Moon - Hills of Death (S1E6).

You can hear this line at 00:03:02.761 in the Blu-ray version of the movie.

Quote context

[...]

- Retik calling Krog. Retik calling Krog.

- Yes, Your Excellency? I was just about to call you to report that we are about to put our ray gun into operation again.

- I have another mission for you first.

- Do you have an atomic bomb strong enough to start a volcanic eruption in the Mount Aldo Crater?

- Yes, but an eruption in that mountainous area would do very little damage.

- On the contrary, it will do a great deal of damage.

- The present atmospheric conditions on Earth indicate that the eruption would cause torrential rains and the resulting floods should seriously disrupt transportation and defense measures.

- Excellent idea. We shall carry it out at once.

- Very well. Then start an intensified campaign with the ray gun.

- Earth's defenses must be completely broken down before we can risk an invasion from the moon.

- Yes, Your Excellency.

- You heard the orders. Charter a plane and drop one of our atomic bombs into the outer crater. Nature will do the rest.

- Okay, when do we do it?

- At once. I will get you the bomb.

[...]