so thar vs such that

So is paired with a that-clause to create emphasis.  So, an adverb, modifies or intensifies an adjective or adverb in the cause-clause. And that follows in the effect-clause with a remarkable or extraordinary comment.  (Note that may be omitted, and very cannot be used in place of so.)

The meteor storm was so beautiful  that we watched it all night.
The meteor storm passed so quickly that it went by in one week.

Such is paired with a that-clause to create emphasis.  Such, an adjective, modifies the adjective+noun phrase in the cause-clause. The that-clause complements the such-phrase with an effect of remarkable nature. Suchis one of the few adjectives that occurs before the article of the noun.

It was such a beautiful meteor storm that we watched it all night.
It was such a quick meteor storm that it passed by in one week.


SUMBER : http://www.grammar-quizzes.com/8-8.html