Stock footage used in Local Forecast intro? (1991-95)

[WeatherSTARIII]

While I was looking at some old videos from a website called Dailymotion, I came across an old CNN station ID clip from 1987. If you notice the mountain background, it kind of looks like the one that was used in the LF intro that TWC used from 1991-95.
 
See video here:

CNN identification 1987 w/ phone-dial sound

 
Local Forecast intro:

http://twcclassics.com/files/bumpers-and-intros/Local%20Forecast%20Intro%201991.wmv

 
So I wonder, did TWC used recycled stock footage that was also used on CNN?

[Nick]

Here's a picture of the intro for reference. The topography seems to match.

[twcclassics]

I'm pretty sure that's the same footage. Nice find!

[Eric]

Bravo!  I don't know how you could go looking for something like that, but when something sticks out like that, it sure sticks out!   

[phw115wvwx]

It sure is the same footage.  The topography is an exact match.  TWC's background shot is somewhat later after CNN's video footage ends.  You can see the upper deck of clouds arriving on CNN's footage, which are heading out of view on TWC's footage during their classic LF intro.  There's also a bigger flat layer of lower clouds on TWC's side, while CNN's view shows the clouds forming and spreading out as they flatten.  Nice find!

[Eric]

Can anyone identify this big rock?