immediately obvious
immedietely apparent

It was immediately obvious that some things needed to change.

It is not immediately obvious why this one will be any different.

Its future as part of American culture was immediately obvious to both men.

The results of the change in gender were immediately obvious.

The effect on the rest of the Web and its citizens was immediately obvious.

The difference in the play of the ball became immediately obvious.

Why he had killed the General and tried to kill his secretary was not immediately obvious.

An hour later no one knew more than what was obvious immediately.

He might be in a bad mood for no immediately obvious reason.

They may have noticed things that are not immediately obvious to you.