In the US, temperatures in many places could drop to minus tens of degrees Celsius, as cold as the Arctic.
Three consecutive cold air waves from the polar vortex are forecast to "freeze" most of the Central and Eastern United States from now until mid-December.
According to AccuWeather and the US National Weather Service (NWS), the first batch of the storm has begun to sweep through this week, opening a rare cold spell.
Renee Duff, senior meteorological forecaster at AccuWeather, said: The weekend will end with the coldest mass of the season, as the cold front from the Midwest flows into the Northeast and the Central Atlantic.
Meteorologists warn that the unusual movement of the cucistic cyclone is paving the way for the continental cold air to continue to flow down.
The distorted Arctic monsoon allows the Arctic air to sweep deep into the central and eastern United States, Duff said. Next week, a second cold front will appear, and a third one is likely to appear around the middle of the month.
This is just the first one, confirmed Paul pastelok, head of AccuWeathers long-term weather forecast team. Next week there will be another batch, and next week there will be a third batch.
The NWS forecasts that the lowest temperature in the Midwest could drop to -13 degrees Celsius to -17 degrees Celsius, with some places even dropping below -18 degrees Celsius.
The North Central Atlantic and New England will see temperatures ranging from -12 degrees Celsius to -1 degrees Celsius, which could break many cold records over the day.
Along the I-95 corridor, the busy route from Washington D.C. to Boston, temperatures could drop to -12 degrees Celsius to -6 degrees Celsius in the early morning.
From Dakota, Minnesota to Iowa and Nebraska, the Arctic air may move higher, causing temperatures to drop below -18 degrees Celsius for several consecutive days.
An extreme cos cosine is a large low pressure area with cold air masses always existing at both ends of the Earth, moving in an hourly turn to hold the cold air masses around this area.
In the winter in the Northern Hemisphere, the tropical cyclone may expand or move, pushing cold air from the Arctic southward over thejet stream. When this shift occurs strongly, deep cold spells - even a series of such as the upcoming 3 - can form and affect millions of people.
Regarding the strengthening of cold air in Vietnam, the Vietnam National Center for Hydro-Meteorological Forecasting said that on December 5, the cold air will continue to be weakly strengthened, affecting the North, North Central and Central Central regions. Strong northeast wind level 2-3, coastal areas level 3-4.
In the Northern and North Central regions, there will be light rain in some places. Cold weather, some mountainous areas of the North are very cold. The lowest temperature in this cold air mass in the Northern and North Central regions is generally from 15-18 degrees Celsius; in the mountainous areas of the North, there are places below 12 degrees Celsius.
There will be rain in some places in the Hanoi area. Cold weather. The lowest temperature in this cold air mass is generally 16-18 degrees Celsius.
