Environment

Foggy start to a stormy day, with more thunderstorms to come

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Thunderstorms are forecast to sweep through Sydney over the next few days, continuing the wet weather that started on the weekend.

The storms are forecast to appear across the state on Tuesday afternoon, Weatherzone senior meteorologist Jacob Cronje said, and are expected to reappear over the next few afternoons.

Fog over Sydneys Northern Beaches on Tuesday morning, ahead of a warm day that will see storms in the afternoon.

Fog over Sydneys Northern Beaches on Tuesday morning, ahead of a warm day that will see storms in the afternoon.Credit:Nick Moir

"Thunderstorms could roll over the Illawarra in the early afternoon, and push through to Sydney by mid to late afternoon," he said.

"We are expecting the possibility of more thunderstorms on Wednesday, and even Thursday and looking into Friday so each afternoon the next couple of days we could see some thunderstorms."

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Temperatures in Sydney are forecast to reach 29 degrees on Tuesday and 28 on Wednesday, while tops of 33 degrees are expected on both days in the west.

While warm, the temperatures and storms are a far cry from the 40 degrees reached in the city on Saturday, and the damaging hailstorm that hit the coast of NSW just before Christmas.

Mr Cronje said Tuesday's thunderstorms are not expected to be as severe, but "any thunderstorm can produce hail".

"Specific severe weather is not necessarily expected from these [storms], but having said that, thunderstorms could produce strong winds and heavy rain, localised heavy falls and hail," he said.

The senior meteorologist said rainfall is also not expected to be particularly heavy.

"We could see widespread falls of about 1 to 5 millimetres and then localised very heavy falls," he said.

Thunderstorms are forecast to hit Sydney every afternoon this week until Saturday.

Thunderstorms are forecast to hit Sydney every afternoon this week until Saturday.Credit:Ryan Stuart

"Where exactly that would be, just because of the nature of thunderstorms, is a bit tricky to say."

A reprieve from thunderstorms and rain is expected on Saturday, with a forecast for a mostly sunny day and tops of 29 degrees in the city, but 35 degrees and the slight chance of a shower in the west.

The thunderstorms forecast for Tuesday afternoon come on the back of fog that covered some parts of Sydney in the morning.

"It wasn't necessarily thick, but there were wisps of it around," Mr Cronje said.

The senior meteorologist said the morning fog was expected given the rainy and warm conditions.

"Whenever weve had rain and it's hot enough, and there's no cloud overnight and it's clearing in the morning, that's a notorious fog formation," he said.

Weatherzone is owned by the publisher of this website.

Rachel Clun is a journalist at The Sydney Morning Herald.

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