A four-day 40-degree heat wave is about to shatter Australia’s east coast, as La Nina is revealed to be officially OVER… that’s how hot it gets in your city
- La Niña is finally officially over after three years
- The weather phenomenon bought devastating wet weather
- This weekend NSW will be wracked by intense heat
Australia’s east coast will be ravaged by four days of 40-degree heat this weekend – as forecasters officially declare La Nina to be over.
The Bureau of Meteorology officially announced the end of La Nina on Tuesday after the weather phenomenon caused three years of disastrous wet weather in Australia.
However, another intense storm is on the way, with forecasters predicting an intense fall heat wave this weekend.
In New South Wales, temperatures can reach 40 degrees for four consecutive days, the first time in 150 years that this has happened this late in the year.
Another intense storm is on the way, with forecasters predicting an intense fall heat wave this weekend
In New South Wales, temperatures can reach 40 degrees four days in a row
In general, Sydney sees four consecutive days with a high of 30 degrees or higher Thursday through Saturday
According to Weatherzone, a ‘big pool of very hot early autumn air’ will move from WA to the coastline of western South Australia.
Temperatures in these areas will exceed 44 degrees before the hot air drifts east and hits NSW.
In NSW, temperatures in the far west of the state will exceed 40 degrees.
The rest of the state will see temperatures in the high 30s with western Sydney threatening to hit 40 degrees on Thursday and Saturday.
In general, Sydney sees four consecutive days with a high of 30 degrees or higher Thursday through Saturday, with a high of 35 degrees on Thursday.
The warm weather is in stark contrast to the wet days La Nina has brought with it over the past three years.
Large parts of the country’s east coast have experienced devastating flooding over the past three years, particularly in northern New South Wales and southeastern Queensland.
It is the third triple La Niña event to hit the country since the 1900s.
The first took place between 1973 and 1975, while the second took place between 1998 and 2000.
According to Weatherzone, a ‘big pool of very hot early autumn air’ will move from WA to the coastline of western South Australia. Temperatures in these areas will exceed 44 degrees before the hot air drifts east and hits NSW
The warm weather is in stark contrast to the wet days La Nina has brought with it over the past three years
La Niña is finally over after three years of bringing disastrous wet weather to Australia (stock image)
The latest La Niña triple helped produce the wettest summer record for parts of northern Australia and the east coast.
In October 2022, Sydney recorded its wettest year on record, beating the 1950 record of 2,194mm.
La Niña occurs as a result of the periodic cooling of ocean surface temperatures in the central and east-central equatorial Pacific.
They usually occur every three to five years, but can occur over several consecutive years.
National Oceanic and Atmospheric Administration determined the end of La Niña based on several factors.
Sea surface temperatures along the equatorial Pacific are now warmer.
Water temperatures 0.8C or more below average are considered typical of La Niña, while current temperatures are 0.2C below average.
Subsurface temperatures in the equatorial Pacific are also above average rather than cooler than normal.
East wind drifts are usually strong in the tropics during La Niña, but have since weakened.