A bomb cyclone is a powerful storm that rapidly intensifies, bringing strong winds, heavy precipitation, and potential coastal flooding. Understanding what a bomb cyclone is and how it forms can help communities prepare for its impacts.
The term “bomb cyclone” refers to a storm that intensifies rapidly, with its central pressure dropping at least 24 millibars within 24 hours. This phenomenon is known as bombogenesis, similar to the rapid intensification of hurricanes.
Bomb cyclones can bring significant impacts to communities, including strong winds, heavy precipitation, and coastal flooding. They are most common during the months of October through March, when there is a sharp temperature contrast between cold and warm air masses.
How Common Are Bomb Cyclones?
A study found that about 7% of all nontropical low-pressure systems near North America from 1979 to 2019 were bomb cyclones, with an average of about 18 bomb cyclones per year near North America during that 40-year period.
Bomb cyclones are most common off the East Coast, which typically sees about one of these intense storms each year. The East Coast’s unique combination of cold air from Canada and warm waters from the Atlantic Ocean creates a perfect recipe for explosive storm growth.
Notable Bomb Cyclones
Some notable examples of bomb cyclones include Winter Storm Grayson in 2018, which intensified at the most rapid rate on record for the western Atlantic Ocean, and Winter Storm Nemo in 2013, which brought strong winds and heavy snowfall to the Northeast.
How To Prepare For A Bomb Cyclone
If you hear meteorologists warn of a bomb cyclone, it’s essential to prepare by stocking up on essentials like food and water, bringing loose items inside, and having a way to receive weather alerts. Stay informed about the latest forecast and be prepared for potential power outages and strong winds.
For more information on bomb cyclones, including their formation and impacts, visit The Weather Channel or NOAA’s website.
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