On December 3, the National Weather Service and major meteorological stations issued an emergency warning of a widespread cold forming.
According to the latest satellite data, after a series of snowstorms swept through last week, a giant cold air mass originating from the Arctic is moving rapidly south, covering the plains, the Midwest, the five great lakes and the Northeast of the United States.
Weather forecast shows that the focus of this cold spell will start to have a strong impact from December 3. The cold air mass from Canada will cause the temperature in the Northern Great Plains and Upper Midwest to suddenly drop. The highest daily temperatures in these areas are expected to be 8 to 14 degrees Celsius lower than the average of many years.
The peak of the cold spell will occur on the morning of December 4. According to forecast models, actual temperatures in states like Iowa and Nebraska will plummet to double-digit negative (F). When converted to degrees Celsius, the actual felt temperatures caused by strong winds could drop to dangerous levels of -23 to -31 degrees Celsius. Cities such as Des Moines and Cedar Rapids are expected to break records for the lowest temperature of a day on record.
By the morning of December 5, the affected area will spread to the east. The cities of Chicago and Indianapolis are at risk of breaking cold records that have existed since 1886. Even New York is expected to experience its coldest day since the first March of the year.
Explaining this extreme weather phenomenon, meteorologists from the National Oceanic and Atmospheric Administration (NOAA) pointed out the main cause of the park's fluctuations.
An extreme cosine is a cold low pressure area that is often stable in the North. However, monitoring data from late November showed that the severe cyclone had weakened and deformed, causing the cold air mass to "leak" and overflow to average latitudes - where population density was high.
Andrea Lopez Lang, a meteorologist at the University of Wisconsin-Madison, said the collision between the artical cold front and the warmer air mass in the south would create extremely complex and severe weather patterns.
According to weather updates, this cold spell is not the end. NOAA expert Amy Butler warned that meteorological models are showing signs of another intensified cold spell in mid-December. Although there are still about 3 weeks until Winter Day, climate indicators show that this year's winter in the US is starting earlier and harsher than usual.
