Weird words

Watching a news program is all about the weather.
So I was watching the weather, and I suddenly saw this:

Town 1: Sunny periods
Town 2: Periods with sun

Then I saw that again, and again! Someone is being really annoying here, using almost exactly the same desription, almost looking random?
What the hell is the difference between those two weather conditions?
And the dumbness doesn't stop there, oh no!
Somewhere else I read something about clouds being "crumbled". WTF?
A little below that I read something about "sealing again with thick clouds."
Sealing? How are clouds supposed to seal or crumble?

Hey, mommy!
Yes, dear?
There's a crumb of cloud on my coat!

That's just weird.