Australian Government Bureau of Meteorology Tasmania Warning to Sheep Graziers for Upper Derwent Valley and South East forecast districts Issued at 10:32 AM EST on Friday 21 August 2026 Warning to Sheep Graziers for the following areas: Upper Derwent Valley and South East forecast districts Sheep graziers are warned that cold temperatures, showers and strong westerly winds are expected during Saturday. Areas likely to be affected include parts of the Upper Derwent Valley and South East forecast districts. There is a risk of losses of lambs and sheep exposed to these conditions. The next warning will be issued by 5:00 pm EST Friday.