Maybe even with a warning you don't stand a chance.

I began to fall to the ground with little warning.

From the looks of things, the people had been hit with no warning.

With no more warning than that, my mind was made up.

How could all this have happened to him with no warning?

But never anything to make him just decide to leave me with no warning.

He could indeed continue the race, but at the risk of a complete power loss, with little or no warning.

Then why, I wanted to ask, with all my warnings, hadn't he brought at least one?

They are let go with a warning from the authorities.

"That's because I was nice enough to let you off with a warning."