A severe heatwave warning has been issued for the North-West of Tasmania for the first few days of the this week with temperatures to get up to 27C in Smithton on Monday and Tuesday and 26C in Sheffield. Other parts of the state including Launceston, Ouse and other inland locations will see temperatures in the 30s. It will remain sticky at night with overnight minimum temperatures remaining in the mid teens. The Bureau of Meteorology said the locally severe heatwave conditions would develop early this week before easing mid-week as conditions cooled. Meteorologist Luke Johnston said the bureau had launched a nationally-consistent heatwave service which goes on what is normal for that time of year in certain areas. "A severe heatwave warning does sound alarming. But it is more about warning people that hot weather is coming so they can prepare," Mr Johnston said "The temperatures coming in the next few days are just hitting the threshold for reporting. The Department of Health is taking note though because it is the first heatwave of the season. "Inland areas will be where it is felt most. This December has been pretty warm. But these kind of temperatures are a standout when you consider how cold the start of summer was last year." Severe heatwaves can be dangerous for many people especially older people, babies, pregnant and breastfeeding women and people who are unwell. People are advised to close windows and draw blinds early in the day to keep the heat out of their home and to use fans or air-conditioners to keep cool.