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A weather map released at 3:30am (CST) highlights temperatures in Australia during the early hours of April 30.
A weather map released at 3:30am (CST) highlights temperatures in Australia during the early hours of April 30.
At 6:00am (CST) the temperature at Middle Point, 66 kilometres south-west of Darwin, was down to 13.1 Celsius, making it the coldest April temperature ever recorded at the site.
The temperature in Alice Springs was a chilly 1.7C overnight, making it the coolest night so far this year and fractionally above its coldest-ever recorded April temperature of 1.4C.
Bureau of Meteorology acting senior forecaster Billy Lynch said he expected it would have been an April record in several parts of the Top End overnight.
"It is just an indication that we are getting off to a really good start to the Dry Season," Mr Lynch said.
The low temperatures were also affecting Darwin, where it got down to 20.5C, making it the coolest night of the year so far.
But the record low overnight at Middle Point was still above the coolest temperature ever recorded in Darwin, which was just 10.4C in July 1942.
Comment: The vast majority of our planetary volcanoes are under water, so called 'submarine volcanoes' (perhaps up to one million of them). Although their eruptions are normally difficult to detect, the significant increase of fish die off's and strange migratory behaviour of marine life could be considered a potential sign of such activity (another cause being methane outgassing).
With the number of known volcanic eruptions on land rapidly increasing worldwide, as the number of volcanoes erupting right now is greater than the 20th century's YEARLY average, a comparable escalation in activity of their under water counterparts seems probable.