Will this winter be as 'abnormal' as last winter?

From November 19, the North welcomed the first cold spell of winter 2017-2018 with temperatures in mountainous areas below 10 degrees Celsius in some places.^oC. Many readers are concerned whether this winter will be as "abnormal" as the winter of 2016-2017?

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According to the National Center for Hydro-Meteorological Forecasting, in the winter of 2017 - 2018, the average temperature nationwide from November 2017 to April 2018 was generally at approximately the average of many years (TBNN).

The ENSO phenomenon (the combination of El Nino, La Nina in the ocean and in the atmosphere) is forecast to be in a neutral phase, but leaning towards a cold phase in the last months of 2017 and increasing the possibility of La Nina (a phenomenon of colder sea water than normal) in early 2018. It is likely that La Nina will be weak and not last long.

Winter 2017-2018 is likely to have prolonged cold spells accompanied by frost in mountainous areas. Illustration photo: PV

In the Winter-Spring season of 2017-2018, the cold tends to appear later than the average of previous years, but this year's winter will be colder, because 2016-2017 is considered to have a warm winter with temperatures 0.5 - 1.5 degrees Celsius higher than the average in the Northern region.

There is a high possibility of severe cold spells lasting 7-10 days. Severe cold spells (average daily temperature 13-15 degrees Celsius) and severe cold spells (average daily temperature 13 degrees Celsius or lower) are also likely to occur later.

Normally, severe cold occurs in the last week of December - the first month of the 3 main winter months, but this year, severe cold may be concentrated mainly in January and February 2018. There is a high possibility of prolonged cold spells accompanied by frost in mountainous areas.

Regarding rainfall, in the North Central region in November and December 2017, it was generally 10-20% lower than the average for the same period, and from January to April 2018, it was generally at the average level.

In the Central and South Central regions, total rainfall during the months of November - December 2017 and March - April 2018 was generally at the average level for the same period, while in January and February 2018, it was generally 15-30% higher than the average. There is a high possibility that the Central region will experience heavy rains during the remaining period of November 2017.

In the Central Highlands and the South, the period from November to December 2017 and the period from March to April 2018 is generally at the average level of the same period; in January and February 2018, it is generally higher than the average due to the possibility of unseasonal rain./.

According to LDO