A band of rain sweeping over Victoria may cause flooding in the state's north and northeast in the next 24 hours. A large trough drawing moisture from the tropics is causing cloud and rain to spread across Victoria from west to east today. All districts will receive rain by tonight, although the heaviest falls will be on the central and northeast ranges. Flood watches have been issued for the Goulburn and Broken Basins and the North East catchments, with flooding expected to develop on Wednesday. Some of these areas have received far more rain than usual throughout winter, which is contributing to the flood threat today. As of 9am today, Mount Buller had received 824mm this season, making it the wettest winter in 26 years and the second wettest on record. Further north, Wangaratta was having the wettest winter in 13 years as of this morning, with 243mm in the gauge so far. While Melbourne will miss out on the heaviest falls today, it won't escape altogether. Rain has been patchy this morning but will increase tonight as the trough reaches central Victoria. Melbourne's late winter rain also caps off a wetter-than-normal season. All three months received above average rainfall and the season is finishing up with over 20 percent more rain than usual.