The 'storm' culprit is raging in the US

The appearance of a hot, moist mass in the sea, polar cold air masses and low pressure grooves turned Grayson into an intense "bomb storm".

Grayson began sweeping the eastern part of the US from January 3, pouring out heavy rain of snow that made the media call it

"Hurricane Storm" is the scientific term used to call a storm suddenly become fierce after atmospheric pressure plummeted, according to Wired. Exploding booms (bombogenesis) occur when the pressure in the center of the storm decreases by at least 0.02 atmospheres in 24 hours, leading to gusts of wind that can quickly cause snowstorms and floods in coastal areas.

This is not a rare phenomenon in practice. Meteorologists estimate this type of storm occurs in the Northern Hemisphere about 10 times a year. They may have other names such as Hurricane Nor'easter or mid-latitude cyclone . That may be the reason many Americans have never heard of a hurricane before the Grayson winter storm poured snowfall into Florida's Tallahassee city on the morning of January 3. However, Grayson is not a normal bomb storm.

As expected, Typhoon Grayson will sweep the US East Coast by the end of the day, steadily increasing as it moves from Florida to Nova Scotia, creating a record level of snow with winds of around level 3. "The storm This is the meteorologists' dream, it's the perfect convergence of the three conditions that we're always watching, "said Paul Huttner, a Minnesota weather forecaster.

The first condition is a hot and humid mass of gas that is pushed out of the Caribbean by the Gulf Stream and travels along the Atlantic coast, a fairly normal phenomenon at this time of year. But the unusual factor is the giant cold air below 0 degrees Celsius that descends from the North Pole 10 days ago, causing the Five Lakes region and the eastern United States to sink in prolonged cold.

Every year, at this time, the Sun does not light the Arctic Circle. Lack of sunlight means lack of heating source, resulting in fast moving cold air. For most of the time, air currents travel east near the upper edge of the atmosphere, making cold air impossible to cross the Arctic. But sometimes the upper air waves move, distorting the air currents and allowing the entire cold air to flow south, mainly Canada and the US.

"just overflowing in North East America. With the additional moisture, we are experiencing a huge difference in temperature. When the storm hits New England, the temperature difference in the center of the storm will reach 37." degree C. The higher the temperature difference, the deeper the storm gets into the land, " explained Huttner.

Grayson storm raged, making it difficult for vehicles to travel.

The temperature difference drags to the pressure difference. When the pressure drops, the air masses come. The more pressure drops, the faster the air mass moves and winter storms form.

Unlike the Atlantic storm, which will slow down when moving north and away from the ocean's heat source, bombs often peak when reaching the New England region. Measurements are places where maximum temperature difference exists, also where the low pressure groove in the upper atmosphere is about to appear.

Scientists at the National Oceanic and Atmospheric Administration estimated that Grayson would cause pressure to drop by about 0.06 - 0.07 atmospheres for more than 48 hours, approaching Nova Scotia last night. This was not only one of the fastest East Coast bomb storms with the storm center pressure expected to reach nearly 0.94 atmospheres, bringing Grayson into the most powerful offshore storms in recent times.

These conditions will lead to faster and stronger winds than a regular storm at this time, according to meteorologist Gregg Galina at NOAA's Weather Prediction Center.