8.40PM UPDATE: Parts of Uxbridge, Moogara, Plenty and Mt Lloyd have now lost power but the lights are still on at Fairview.
9.20 UPDATE: Power has been restored in New Norfolk and Molesworth. At Sorell Creek tonight's racing at the local speedway has been cancelled due to the heavy storm.
9.25 UPDATE: According to the TasNetworks website, power has been restored to all affected areas. On Twitter the company said 2500 homes in the Derwent Valley were blacked out. No reason has been given for the outage.