Sentence Correction

Coordinating conjunctions (and, for, or, but, nor, yet, so) join two independent clauses.
Is it okay to omit the subject in the second clause?

Take a look at this sentence.

The category 1 to 5 rating known as the Saffir-Simpson Hurricane Scale provides an estimate of a hurricane’s potential to destroy or damage property, and is primarily determined by wind speed.

The subject in the second clause has been omitted.

thanks.

It's perfectly OK to omit the subject in the second half.

Consider a much simpler sentence:

Bob is a graduate of Harvard and works at Microsoft.

We don't need to repeat "Bob" in the second half of the sentece. Your example is more complicated, but he same rule applies.