A bomb cyclone is a popular term for a fast-developing storm that occurs when atmospheric pressure drops at least 24 millibars over a 24-hour period.
What is a bomb cyclone? Everything you need to know
A powerful winter storm is forecast to pound most of the U.S. with freezing temperatures and heavy snow this week. For millions of Americans in its path, the storm could intensify into a bomb cyclone or bombogenesis. Here's what to know.
If you're traveling by air this week, get ready for delays, disruptions and cancellations.