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Golf ball sized hail smashes parts of Sydney

Hail in Cobbitty, south west Sydney.Courtesy: Facebook

Sydney has been smashed by a fierce storm cell, with golf-ball sized hail smashing parts of the city and heavy rain flooding streets.

Hail then fell further south west including Oran Park and Camden, after weather forecasters issued warnings for ‘giant’ hail stones.

The SES had 74 calls for help and the storms are set to continue across much of coastal NSW throughout the evening.

The Bureau of Meterology Tweeted : #Severe#Thunderstorm#Warning for Heavy Rainfall, Large (possibly Giant) Hail, and Damaging Winds now current for parts of the Sydney Metro, Southern Highlands, Southern Ranges, and Northern Tablelands.

Earlier, Sydneysiders were being urged to take caution on the roads with the city set to be deluged by up to 70mm of rain.

Forecasters predict that certain parts of the city could receive the amount of rain that would generally fall during one half to three quarters of March.

The deluge has also already started for some- in Kingsgrove a video posted on Facebook showed water flowing along a road.

Thunderstorms, gusty winds and even hail are possibilities as warm air is pushed down the coast from the northern tropics.

The BOM have warned severe thunderstorms are likely all the way from the Queensland border and down past Wollongong on the NSW south coast.

Severe and possible thunderstorms are expected to hit other areas of the state.

Meanwhile, meteorologists are monitoring a potential cyclone currently situated near Papua New Guinea.

BOM forecaster Michael Gray said while the system was currently not a threat to Queensland, meteorologists were keeping a close eye on it regardless.

Mr Gray said it was impossible to predict the path of the system and it was a case of wait and watch at this stage.

The Sunshine State is, however, expected to be hit by possible thunderstorms and rain over the next few days.

The storm system could bring heavy falls over the next few days with the Darling Downs and Lockyer Valley potentially in the firing line today.

Brisbane is not expected to be hit, however the Queensland capital could be in for storms tomorrow and into the weekend.

There is the chance of heavy falls later in this week and into the weekend with parts of the southeast expecting around 20mm of rain Mr Gray said.

The chances of the cyclone forming over the next few days remains low.