Source: Bureau of Meteorology

For people in parts of the Mallee, South West, Northern Country, North Central and Wimmera Forecast Districts.

Issued at 4:51 pm Thursday, 18 May 2017.

WEATHER SITUATION:
A low pressure system and associated upper trough located north of Adelaide are expected to move slowly southeast during the remainder of today, reaching the far northwest of Victoria by Friday afternoon. The low and upper trough will then cross the remainder of the State later Friday and into Saturday.

HEAVY RAIN which may lead to FLASH FLOODING is expected to develop across parts of the Mallee, Wimmera, Northern Country, North Central and Southwest districts this evening and continue into Friday morning before easing by the early afternoon.

24 hour totals of 30 to 50mm are forecast, with most of the rain falling in a 12 hour period. Thunderstorms are possible over the northwest of the State later today and during Friday which may result in isolated higher totals of 50 to 70mm.

Locations which may be affected include Swan Hill, Kerang, Stawell, St Arnaud, Ararat and Maryborough.

The State Emergency Service advises that people should:
* Don't walk, ride or drive through flood water;
* Keep clear of creeks and storm drains;
* Be aware that in fire affected areas, rainfall run-off into waterways may contain debris such as ash, soil, trees and rocks;
* Be alert that in areas recently affected by fires, heavy rainfall increases the potential for landslides and debris across