30-06-2025
Sydney weather: Bomb cyclone hits NSW - what you need to know
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Millions of Aussies are in the path of a 'bomb cyclone' which has formed off Australia's east coast.
Severe weather warnings have been issued for NSW, eastern Victoria and southeast Queensland as the explosive 'cyclone' has been confirmed off the coast and heads inland.
21:22
Where will be most affected?
The most intense rainfalls are expected over the Central Coast, delivering up to 200mm of rain.
Affected areas will stretch from the far south of the Mid North Coast, through the Eastern Hunter, Sydney, the Illawarra, and the South Coast, continuing all the way into Victoria's Gippsland.
'100 to 200mm of rain possible through these areas over 48 hours, and I expect some locations will pick up even more than that,' Mr Hines said.
A strong wind warning has been issued by the Bureau of Meteorology for the East Gippsland Coast in Victoria.
A severe weather warning has been issued in NSW for the Mid North Coast, Northern Tablelands and parts of Northern Rivers, Hunter, Metropolitan, Illawarra, South Coast and North West Slopes and Plains Forecast Districts.
Damaging, locally destructive winds are expected along with heavy rainfall.
Flood watches are in place for Mid North Coast, Hunter, Hawkesbury-Nepean, Sydney Illawarra Coast and Snowy catchments.
A harzardous surf warning is also in place for the NSW Coast, along with a generalised warning for Lord Howe Island, which is expected to be smashed with five metre waves.
A marine wind warning is also in place for most of the Queensland coast.
21:22
How much rain is expected?
Bureau of Meteorology forecaster Angus Hines explained that the powerful weather system would batter parts of NSW and Victoria from the start of the week, with up to 200mm of rain expected.
Aussies should be prepared for Tuesday and Wednesday to be the two biggest days when it comes to rainfall and weather impacts.
'Tuesday's the day when it is really going to deteriorate, and it's going to be very wet and very windy, so the rain will likely last through much of the day,' he told Daily Mail Australia.
'We will see the winds absolutely howling up that NSW coast.
'We could certainly see those gusts upwards of 80, 90, even 100 kilometres per hour around parts of the Sydney Metro area on Tuesday – that's definitely enough to cause a bit of damage, bring down some trees.
'We could be talking about power outages as well.'
Aussies can expect the affects of the bomb cyclone to last through Thursday.
21:21
What is a bomb cyclone?
A bomb cyclone is a term used by meteorologists for bombogenesis, which refers to a storm that occurs when atmospheric pressure suddenly drops below a certain point.
This creates a volatile, fast-flowing air mass which results in a rapidly developing storm.
The pressure drop required for a bomb cyclone in the Tasman Sea, between Australia and New Zealand, is 18 hectopascals near Tasmania to 13 hectopascals near the Queensland-NSW border.
This weather event will see the air pressure plunge by 22 and 24 hectopascals each day, which will lead to heavy rains and high winds.
The low is on course for a 24-hour drop in pressure of around 25 hectopascals, more than reaching the threshold for a bomb cyclone of 15hPa.
21:10
Urgent warning issued about the 'bomb cyclone' that will smash three states
Millions of Aussies are in the path of a 'bomb cyclone' which has formed off the New South Wales coast.
Severe weather warnings have been issued for NSW, eastern Victoria and southeast Queensland as the explosive 'cyclone' has been confirmed off the coast and heads inland.
On Tuesday morning, meteorologists warned the system had developed in the western Tasman Sea and would be 'even more explosive than initially forecast'.
The vigorous coastal low pressure system is expected to deepen throughout the day with damaging winds reaching up to 125km/h, including in parts of Sydney 's east.
Heavy rain and damaging surf conditions, with waves exceeding five metres in the surf zone have also been forecast.
More details in the link below.
Why Aussies should be terrified about 'bomb cyclone'
Millions of Australians are in the path of a 'bomb cyclone' which has formed off the New South Wales coast.
