After a year of record-warm global temperatures due to climate change and El Nino weather patterns, a weak La Nina shape is expected to form before winter arrives and could last until March next year - the US National Weather Service said.
For much of the United States, a weak La Nina with the potential to appear in November will not result in higher or lower-than-average winter temperatures, the National Oceanic and Atmospheric Administration (NOAA) said last week. But across the south, temperatures are expected to be above normal, while the Pacific Northwest is expected to experience colder-than-average temperatures.
Since mid-September, the temperature in the central Pacific has cooled, 0.5 degrees Celsius lower than the multi-year average, indicating a cold front, which is La Nina.
For Vietnam, the National Center for Hydro-Meteorological Forecasting said that this winter, the weather will change as Vietnam is affected by La Nina. According to statistics, in strong La Nina years, winters are often very harsh, such as in 1998, 2000, 2007, 2008, 2011, 2020 and 2022.
According to the Vietnam National Center for Hydro-Meteorological Forecasting, La Nina will affect Vietnam this year, but will not be as strong as the above years, although it can still make this winter colder and longer than the last 3 years.
As early as October, the frequency of cold air waves began to increase, including the cold air waves on October 2. It is forecasted that in November and December, the temperature will be about 0.5 degrees Celsius lower than in 2023.
Especially after warm winters in the Northern provinces, this year is expected to be colder than the previous winter of 3 years.
The first severe cold spell is expected to occur in the second half of December and will be concentrated from the second half of December to January-February 2025.
Due to La Nina, Vietnam and Southeast Asia may see higher-than-normal rainfall in the coming months - Bloomberg reported.
"La Nina is expected to occur from October to November 2024 onwards and is one of the contributing factors to the possibility of heavier than normal rainfall across several countries in the region," the ASEAN Meteorological Express Center said.
According to Mr. Takahisa Nishikawa, head of forecasting at The Weather Company, Vietnam could also experience more typhoons than usual until April next year, which could cause heavy rain with the risk of flooding and landslides.
