Flash flooding, severe thunderstorms, fires and gale force winds to lash Australia today

Queenslanders have been told to brace for severe thunderstorms today, which will bring heavy rainfall and may cause flash flooding.

Storm activity is expected across the Wide Bay region and Burnett coast, stretching all the way between Bundaberg and Moore Park Beach.

The Bureau of Meteorology (BoM) has issued a severe weather warning for the region, with the coast expected to cop a battering starting from this morning and lasting the duration of the day.

In New South Wales, the BoM has also said that storms are possible across the state's northern areas this afternoon.

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The bureau has advised residents in the area to monitor situations closely, which have a chance of becoming severe.

Elsewhere in NSW, a weather warning has also been issued for the Snow Mountains region, with gale force winds predicted to wreak havoc, seeing speeds of up to 125 kilometres an hour.

"Damaging winds, averaging 80 to 90 kilometres an hour with peak gusts of around 125 are possible over Alpine areas above 1900m from later this afternoon," the BoM said.

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"Winds are expected to ease on Friday morning. Locations which may be affected include Thredbo Top Station."

A severe wind warning was also issued for parts of South Australia yesterday, which has continued into today.

Residents living at the in Mount Lofty Ranges and parts of Mid North and Murraylands districts have been told to practice caution and monitor situations.

In Victoria, the state has been forecast a mixed bag of weather today, with generally warm temperatures becoming windy throughout the afternoon, a severe weather warning for the ranges and even a severe fire warning for Mallee.

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Overall, Australia is far wetter than it was 12 months ago, with the La Niña weather system truly setting in across the country this year.

Meteorologists said hardly anywhere in the country is in need of rain right now, as damp conditions have continued to soak the nation, and are expected to remain moving more toward summer.

Although the USA officially declared La Niña for another year a month ago, the BoM have yet to in Australia, though it is expected within the coming week.