Sentence examples for is otherwise from inspiring English sources

"is otherwise" is a correct and usable phrase in written English.
It is typically used in the middle of a sentence to indicate that something is different or in contrast to what was previously mentioned. One example could be: "The weather forecast predicted clear skies, but it is otherwise as dark clouds loom in the distance." In this sentence, "is otherwise" is used to show that the current weather is not as predicted.