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Possible flash flooding in spring blast

Wetroad

Severe weather is in store for much of the state as a low pressure system develops over Tasmania's east from early Friday until Saturday.

The state's parched east coast will be hit by torrential falls of 80 millimetres, with more in elevated areas, also buffeted by winds of up to 90 kilometres.

20-30 millimetres or more is forecast for the northwest and central north, with the potential for flash flooding.

The entire eastern coastal strip of Tasmania from Swan Island to Tasman Island is in line for the winds, which will develop Friday afternoon, tend southeasterly early Saturday and ease later Saturday.

Devonport, Burnie, Launceston, St Helens, Swansea and Orford are all in the firing line for sizeable downpours.