Heavy rain from fallout of ex-Tropical Cyclone Tiffany to hit SA

SA may see its heaviest rainfall since 2011, with the ripple effect of ex-Tropical Cyclone Tiffany creating a four-day deluge expected to hit the state tomorrow.

Wild weather alert! South Australia is expected to be lashed with wild weather and heavy rain as the remnants of Tropical Cyclone Tiffany near the Queensland and Northern Territory border wreck havoc on the southern and eastern states. 

It is expected that the heaviest rainfall seen in decades will hit South Australia this weekend, with some parts of the state to see upwards of 100mm in what has been described as a ‘tropical deluge’. 

The four-day storm is expected to hit SA Thursday as the ripple effects of ex-Tropical Cyclone Tiffany hits the state. The deluge could be enough to cause significant flooding, with reports of the estimated rainfall described to exceed totals not seen since 2011. 

“We have the tropical moisture hanging around from the ex-tropical Cyclone Tiffany in the top of the state and a new upper-level system from the west,” said Bureau of Meteorology (BOM) Meteorologist Jenny Horvat.

“The two will combine and develop a new low-pressure system on the surface.” 

The collision of the two weather systems is expected to see South Australia’s rainfall intensify, with initial flood warnings already issued by BOM for the West Coast and parts of the North West and North East Pastoral districts. 

A predicted 60mm-100mm of rain will drop in parts of the West Coast, potentially causing ponding and widespread flooding. Horvat said the best thing for South Australians to do is to stay up to date with the flood warnings and be mindful that flooding can concur quickly. 

“We’re going to see some significant rainfall,” continued Horvat. 

It is expected that the slow-moving, heavy rainfall will travel east, hitting the Eyre Peninsula by Friday and parts of the Flinders Ranges late Friday to early Saturday.

The peak of the four-day storm is reported to hit metropolitan Adelaide Saturday, with Sky News Weather meteorologist Alison Osborne stating that South Australia will see a rainfall “equal to a summer’s worth in two days.” 

Friday forecast; BOM
Saturday forecast; BOM

Along with heavy rainfall, the state will continue to see its warmer weather, with the mercury reported to rise about 30 degrees across the four-day period.

SA’s Country Fire Service also issued a warning on January 17 for the far northwestern region of the state near the NT border, listing the chance of flash flooding from the heavy downpour. 

South Australia is not the only state expected to be hit with wild weather, with other Eastern states expected to see a fall out from ex-Tropical Cyclone Tiffany as well. Reports state that half of Australia will be drenched from the weather system created. 

Sydney is expected to be lashed with 50mm of rain this week, with NSW’s coastline and inland region being hit will heavy rain from today. The extreme weather system will also move to parts of regional Victoria and Melbourne, as well as continuing to drench Queensland and the NT. 

Stay up to date with wild weather warnings issued by BOM here.

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