Seven days of wild weather: the new normal for Sydney?

Sydneysiders might have to get used to wild storms and higher temperatures in summers to come, experts say.

Another severe thunderstorm warning for large hailstones and damaging winds has been issued by the Bureau of Meteorology New South Wales for the Hunter and parts of the Mid North Coast, Metropolitan, Illawarra and Central Tablelands Forecast Districts for this evening.

Andrew Treloar, manager of New South Wales weather services at the Bureau of Meteorology, told Yahoo7 News that the recent run of storms shows weather systems are getting more and more extreme.

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“The run of storms have been out of the ordinary. We haven’t had this many in a row since the 1940s,” he said.

“We haven’t got records to show that these storms are directly linked to global warming but the science talks about the intensity of weather patterns and the recent activity is consistent with that.”

The state has been getting hotter over the last few years, according to Treloar, and it is already heading towards record heat this year.

“This type of weather is perhaps of a sign of things to come,” he said.

New South Wales has experienced subtropical weather for the last week, which provides the ingredients for severe storms, and some impressive photography for budding storm chasers.

Photographer Paul Fleming has been out capturing some amazing shots of the latest Sydney storms on his mobile phone.

"Watching the storms roll over Sydney from the Manly ferry had me entranced: the raw, dramatic beauty was" simply stunning."

Seven Meterologist David Brown said New South Wales residents can blame the string of storms on a slow high-pressure system sitting over the Tasman sea driving moist air from the Coral Sea over New South Wales and Victoria, leading to high humidity.

“An active low pressure trough that has been trapped over eastern Australia because of the blocking effect of the high has provided the instability and trigger for showers and thunderstorms over vast areas of eastern Australia,” he said.

Winds in the middle part of the atmosphere have provided the right environment for pockets of severe thunderstorm activity over the last week, Brown said.

“In some cases, like the destructive Brisbane storm, a super cell develops when all of the right atmospheric conditions fall into place. Thankfully they are rare!”

Sydneysiders can release a sigh of relief when the city will be granted reprieve from thunderstorm weather tomorrow, Brown said, but it’s likely to return late Wednesday and Thursday.

Experts agree it is too early to predict whether we need to cancel the Christmas Day barbeque, but according to Brownie “there’s a strong chance the temperatures will be in the mid 20s.”