Top Ten Signs of Bad Weather in Cloud Formations

Read the title.

I didn’t put the obvious up here (cumulonimbus variations) because they are, well, obvious. I wanted to use cloud types that are NOT obvious.
However, if you want to put obvious stuff up here, that’s perfectly fine.

The Top Ten

1 Red Sky in the Morning

2 Altocumulus

3 Cirrus

4 Cumulus Congestus

5 Cirrostratus

6 Cumulus Mediocris

7 Cirrus Radiatus

8 A Halo Around the Moon

If I correctly remember, the sign means:
1) yellow-ish halo: rain
2) pink-ish/red-ish halo: strong winds

9 Cirrus Fibratus

10 Altostratus

The Contenders

11 Cirrocumulus

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