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LIBERTARIAN/CONSERVATIVE DIGEST AND COMMENTARY FROM AN ACADEMIC PSYCHOLOGIST in Brisbane, Australia. My academic publications are widely read
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Global cooling hits Sydney, Melbourne and Adelaide
After their coldest winter in 13 years Sydney residents have just experienced their coldest September in five years, weatherzone.com.au says.
However, the heat is on its way. "September was an unusual month in terms of the lack of warm days across much of south-eastern Australia," weatherzone meteorologist Brett Dutschke said.
"A high pressure system over the Great Australian Bight acted as a blocking mechanism, keeping noticeably cool southerly winds blowing over South Australia, Victoria and NSW. "Significant warming will occur in the coming weeks as heat builds over the interior. All we will need is a day or two of westerly winds and we could exceed 30 degrees," Mr Dutschke said.
When both daytime and overnight temperatures were combined, Sydney's average temperature this month came in at just under 17 degrees. This made it the coldest September in five years, despite being one degree above the long-term norm. It was also the coldest September in terms of daytime temperatures in three years.
During the month, the city had an average maximum temperature of 21 degrees, which is still warmer than the long-term norm of 20. It took until the 27th to warm up to 27 degrees, the longest in 17 years. There was a 23-day period that stayed colder than 25 degrees, the longest in September in 10 years.
The nights were not particularly cold overall, averaging a minimum of 12.3 degrees, one above the long-term average. This made it the coldest in terms of overnight minimums in two years. There were only six nights that cooled below 10 degrees; typically there are 11.
The cold was pronounced across southern and central NSW with several centres including Hay and Forbes having their coldest September in at least 15 years in terms of daytime temperatures.
Melbourne, Adelaide also cold
Residents of Melbourne have just experienced their coldest September days in 16 years, Mr Dutschke said. The city had an average maximum temperature of 16.6 degrees, about a half a degree below the long-term normal of 17.2. This made it the coldest September in terms of daytime temperatures since 1994.
When both daytime and overnight temperatures were combined, Melbourne's average temperature came in at just under 13 degrees. This made it the coldest September in at least seven years, despite being about a half a degree above the the long term norm.
Warmer days ahead will provide Adelaide residents with a good thawing out after enduring their coldest September in 18 years, Mr Dutschke said. The city had an average maximum of just 17 degrees, two degrees colder than the long-term norm, making it the coldest September since 1992 in terms of daytime temperatures. In fact, there was only one day that warmed to 20 degrees, on Monday 13th, the fewest 20-degree days in September in 18 years.
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