Bomb Cyclone – UPSC Notes Prelims and Mains

When a low pressure system suddenly increases, or “bombs out,” it causes an abrupt decrease in pressure. Squall lines, coastal flooding, and power outages are just a few of the threats caused by the decrease in pressure’s high winds and heavy rains.

It’s the weather’s fault.

Bomb cyclones are formed by a quick decrease in pressure induced by the collision of a big mass of cold air with a large body of warm air. When a cold front comes in an area with warm, moist air, the surface air may quickly climb and cool. As warm air condenses into cooler liquid, precipitation and cloud formation cause a dramatic reduction in atmospheric pressure.

The bomb cyclone is named from the sudden decrease in air pressure that occurs during its formation. When air pressure decreases by 24 mbars or more in less than 24 hours, very lethal “bombs” occur.

Impact on the Region

When a bomb cyclone starts over the ocean and advances inland, it generally causes coastal damage. Strong winds may push water to the shore, resulting in coastal flooding, while heavy snowfall or rain can cause landslides and flash floods.

Because of the storm’s tremendous winds and heavy rain, bomb cyclones may inflict considerable damage in inland areas as well, including power outages, downed trees, and transportation issues.


People in the path of a bomb cyclone should take precautions to protect themselves and their belongings. People should prepare for travel delays owing to road closures and aircraft cancellations caused by bomb cyclones, so they should store up on food, water, and medication and ensure their houses are well-insulated and capable of withstanding power outages. If a bomb cyclone is in the forecast, it’s advisable to remain put and wait for better weather.

Bomb cyclones are very powerful weather systems that may inflict extensive damage such as coastal flooding, power outages, and transit delays. The collision of a big volume of cold air with warm air causes a sudden pressure drop. If you live in an impacted region, stay up to date on the latest weather prediction and take precautions to protect yourself and your home.

Aside from what has already been said, it is crucial to know that a Bomb Cyclone may cause both very heavy downpours and twisters. These incidents are very hazardous since they routinely occur with little to no warning and may cause significant damage.

Similar meteorological occurrences, such as the Great Storm of 1987 in the United Kingdom and the 2010 heat wave in Russia, have happened across Europe and Asia in addition to the United States, indicating that bomb cyclones are not limited to the American continent.

Individuals and communities must take measures ahead of such a disaster. National and municipal plans for coping with a bomb cyclone should already be in place, including evacuation routes away from the coast and safe havens for people forced to evacuate their homes.

The National Weather Service and other organisations’ computer models can anticipate the development and route of a bomb cyclone, which is essential information for disaster management and the general public.

Another point: bomb cyclones are terrible, but they are so rare that most people will never witness one. A bomb cyclone will cause less harm if people are prepared for it and can respond swiftly.

Some facts about Bomb Cyclone

  • A “bomb cyclone” is a meteorological phenomena that happens when a low-pressure system quickly strengthens, resulting in a fast decrease in pressure.
  • The name “bomb” alludes to the sudden and dramatic decrease in pressure that happens when a bomb cyclone forms.
  • A drop of 24 millibars or greater in 24 hours is termed a “bomb” and is uncommon.
  • Bomb cyclones usually damage coastal areas since they originate over the ocean and travel inland.
  • As a consequence of high winds pushing water towards the coastline, bomb cyclones may cause coastal flooding.
  • Bomb cyclones may also impact inland locations, since high winds and heavy rains can cause power outages, fallen trees, and traffic problems.
  • A bomb cyclone is formed when a mass of cold air collides with a quantity of warm air, causing a fast decrease in pressure.
  • Bomb cyclones may generate significant snowfall or rain, resulting in landslides and flash floods.
  • Bomb cyclones may create strong thunderstorms as well as tornadoes.
  • Bomb cyclones may strike suddenly and wreak enormous damage.
  • Similar weather occurrences, such as the Great Storm of 1987 in the United Kingdom and the 2010 Russia heat wave, have happened throughout Europe and Asia.
  • Individuals and communities must both prepare for such an occurrence.
  • Governments and emergency response organisations should have procedures in place to deal with a bomb cyclone.
  • Computer models created by the National Weather Service and other organisations can anticipate the development and trajectory of a bomb cyclone.
  • Bomb cyclones may harm infrastructure like roads and buildings.
  • Bomb cyclones have the potential to disrupt transportation and communication infrastructure.
  • Bomb cyclones may result in fatalities and injuries.
  • Bomb cyclones may interrupt key systems and create long-term power disruptions.
  • Bomb cyclones may cause economic damages such as company destruction and revenue loss.
  • While bomb cyclones are deadly, they are also uncommon, with most people never experiencing one in their lifetime.
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