Heavy thunderstorms are set to persist over Queensland today and continue into tomorrow, with some places likely to see falls in excess of 150mm leading to flooding. An upper level low pressure system over QLD's interior is drawing moisture from the tropics, creating extremely unstable conditions across the state. A series of thunderstorms have already swept over the state's east between Cardwell and Gladstone, bringing more than 120mm of rain to Williamson and 150mm to Gladstone, the heaviest daily rainfall in two years. Thunderstorms have been torrential at times, with 18mm falling in just 10 minutes at Williamson, 11mm in 10 minutes at Gladstone and 42mm in 30 minutes at Emu Creek near Bowen. The heavy rain is likely to continue for the remainder of today and into Friday, with central parts of the state bearing the brunt of it today and southeastern QLD copping the most tomorrow. Today the area between Townsville, Gladstone and inland to Emerald will see the most rain with widespread falls of 50-150mm. However, those under thunderstorms have potential to see over 150mm in just 24 hours. Tomorrow the heaviest falls will shift to the southeast, from Rockhampton to Brisbane and as far inland as Gayndah, where 50-75mm are a risk, with falls up to 100mm a chance along the coast. The rain is likely to cause flooding above minor levels across parts of the region, although flash flooding is likely to cause more serious danger where streams could rise rapidly to dangerous levels. Any thunderstorms also bring the risk of damaging wind gusts up to 110km/h. The system will finally begin to clear the state on Saturday although the risk of thunderstorms will persist into the weekend.