Keep your umbrella close by as more rain is on the way.

Environment Canada has issued a rainfall warning for Fort McMurray and surrounding areas;

• Lac La Biche Co. near Crow Lake Prov. Park
• Lac La Biche Co. near Wiau Winefred and Grist Lakes
• R.M. of Wood Buffalo near Fort MacKay and Wallace Creek
• R.M. of Wood Buffalo near Fort McMurray and Anzac
• R.M. of Wood Buffalo near Gipsy Lake and Whitemud Falls
• R.M. of Wood Buffalo near Grand Rapids Wildland Prov. Park
• R.M. of Wood Buffalo near Janvier South and Conklin
• R.M. of Wood Buffalo near Mariana Lake
• R.M. of Wood Buffalo near Stony Mtn Prov. Park and Engstrom Lake

The weather agency says a low-pressure system will bring heavy rain to parts of northeastern Alberta starting Thursday night.

Between 40 and 60 mm is expected, going up to 75 mm where thunderstorms occur.

The weather system is expected to move out Saturday morning.