May 28, 2012
10 Very Rare Cloud Formations

arrogantlampshade:

1. Nacreous Clouds

2. Mammatus Clouds

3. Altocumulus Castelanus

4. Noctilucent Clouds

5. Mushroom Clouds

6. Cirrus Kelvin-Helmholtz

7. Lenticular Clouds

8. Roll Clouds

9. Shelf Clouds

10. Stratocumulus Clouds

(Source: collthings.co.uk, via ahsnapitskevin)

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