Outburst (noun)

1. A sudden release of strong emotion or energy.
2. A sudden and rapid increase in activity or eruptive activity.

Origin:

Mid 16th century (as an adjective in the sense "bursting out"): from out- "out" + burst.

Examples:

1. He had an outburst of anger when he heard the news.
2. The volcano had a major outburst, spewing ash and lava.
3. She had an outburst of laughter that lasted for several minutes.
4. The company had an unexpected outburst of sales during the holiday season.
5. The child had an outburst of tears when he was told he couldn't have candy.