Air from the Antarctic has been dragged up over Australia by a series of active weather systems, the result of a meridional jet stream flow which researchers have linked to low solar activity.
Parts of Australia’s Northern Territory’s Top End experienced their coldest morning in almost two decades on Wednesday. Tindal’s low of 4C (39.2F) was it’s lowest temperature in 18 years and only the third time its been that chilly in the past 27.
South Australia is now regularly recording temperatures well-below zero, with reports coming in of severely damaged crops.
The Bureau of Meteorology said Monday’s low of -5.7C (21.7F) at Renmark, in the state’s Riverland, was the equal-second lowest temperature on record for the town.
Meteorologist Matthew Bass said it was the region’s sixth consecutive day below zero.
“Those sort of temperatures are not what we see very frequently in South Australia … It’s a very significant, severe low temperature.”
Australia’s alpine region just suffered it’s coldest run of nights in four years.
Wednesday morning’s minimum temperature of -6.9C (19.6F) at Perisher Valley was it’s eighth consecutive morning below -4C (24.8F) — the mountain’s longest spell of mornings below minus 4 degrees Celsius since 2015.
And if the mercury reaches the forecast low of -4C on Thursday, it will be Perisher’s equal longest spell of nights this cold since 2010.
Forecasts reveal a further cold front is expected to bring heavy snow to the Australian alps this weekend, with another expected to blanket almost the entire continent in early July.
GFS TEMP ANOMALY (C) for JULY 03
The cold times are returning, as the sun enters it’s next Grand Solar Minimum cycle.
Our star is now in the solar minimum of it’s weakest cycle in over 100 years, with NASA’s forecast for the sun’s next cycle revealing it’ll be it’s weakest for the last 200 years (see the link below).
Along with tumbling global average temperatures, researchers have also linked reduced solar output to a meridional (wavy) jet stream flow, which effectively pulls cold Arctic air south and Antarctic air north.
We’re on our way back down:
Grand Solar Minimum + Pole Shift
[Feature Image: from @Gleno_ on Twitter]