Decoding the Science Behind Weather Prediction

Which difference between:

"weather forecast"

&

"weather prediction"

(at least: in your understanding of course)

?..

In English language & in your article??.

I used to think U don't know such term as 'weather forecast ' (while reading the article's text) until seen your list of tags (after the the article text's end)...

Thanks 4 answering!!!