1. to fade away without serious consequences
don't worry, the trouble will blow over
If you want something to ‘blow over’, you want it to disappear or lose its popularity. This is a phrase usually used to talk about a big controversy where it is hoped the public will forget about it quickly. Similar in meaning to ‘fade out of consciousness’. You will often hear this used in PR or in the media. "We will have to carefully construct a statement to release to the public. These things don't just blow over."