La Niña has returned to the Pacific Ocean, and threatens a brutally cold and snowy northern hemisphere winter. This event is referred to a ‘double-dip’ La Niña because similar conditions formed last year, too.

It has an 87 percent chance of lingering until February 2022, said NOAA in a statement.

Very briefly, La Niña is characterized by unusually cold ocean temperatures in the Equatorial Pacific (region 3.4). The climate pattern tends to generate colder, snowier winters across much of North America, Europe and Asia, and a wetter, stormier summer in Australia.

Concentrating on the United States, the northwest is set to suffer an anomalously cold winter with high snowfall totals to boot.

Bob Larson, expert senior meteorologist for Accuweather, said: “The snowfall forecast for New York City is, on average, 29.8 inches, but our prediction is up to 32 inches” — in my mind, these are conservative estimates.

Last winter’s La Niña unleashed record-cold temperatures in February, 2021 – the coldest in record history for many locales. During that month, the average temperature for the contiguous U.S. was just 30.6F–3.2F below the multidecadal average, while unprecedented snow totals battered many states.
https://electroverse.net/double-dip-la-nina-brutal-winter-record-hail-pounds-australia/

New data released overnight by the U.S. Climate Prediction Centre has increased the likelihood of a third consecutive La Niña later this year.


According to the Bureau of Meteorology, the Pacific Ocean has just come out of two back-to-back La Niña episodes, which ran from September 2020 to March 2021 and November 2021 to June 2022. This was the first double-dip La Niña event in a decade.


But while the Pacific Ocean has now returned to a neutral state, it is still in a La Niña-like pattern and forecasts suggest that it may restrengthen later this year.





Image: Sea surface temperature anomalies in the Pacific Ocean on July 13, 2022.


Data released overnight by the US Climate Prediction Centre (CPC) and Columbia University’s International Research Institute for Climate and Society (IRI) shows that the probability of La Niña increases later this year. Their predictions give La Niña a 62 percent chance of occurring by early spring and a 65 to 66 percent chance in late spring and early summer.

https://www.weatherzone.com.au/news/odds-increasing-for-la-ninas-return/690941