'Bomb cyclone' hits US, more than 200 million people affected
Tags: International News
Recently a powerful "Bomb Cyclone" has hit the United States, affecting at least 200 million people. At least 64 people have died.
Temperatures are predicted to plunge -57 degrees Celsius in certain locations due to the largest winter storm to hit the country in decades.
Temperatures dropped across the United States and heavy snow caused power outages in cities, thousands of flights were cancelled and people were stuck in their homes without food.
New York's Erie County, which includes Buffalo, is one of the areas most affected by the winter storm, which stretches from the Canadian to the Mexican border.
What is a 'Bomb Cyclone'?
Bomb cyclone is used by meteorologists to denote a mid-latitude cyclone that rapidly intensifies.
It is a giant winter storm that hits the coast and brings strong winds, flooding, snow and ice.
It consists of a combination of rapidly decreasing pressure and extreme cold.
This particular storm is the most explosive ever seen on the East Coast.
It is called a bomb cyclone because in this the storm strengthens explosively while the pressure subsides.
Formation of 'Bomb Cyclone'
Storms form when a mass of low pressure air (warm air mass) meets a high pressure mass (cold air mass).
The lower the pressure, the stronger the storm.
This occurs when a mid-latitude cyclone intensifies rapidly, dropping at least 24 millibars (millibar measures atmospheric pressure) in 24 hours.
This rapidly increases the pressure difference, or gradient, between the two air masses, causing the winds to be stronger.
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