A low pressure system is developing over eastern Montana Friday with a boundary positioned to the northeast across northern North Dakota into southeast Manitoba.
A large area of rain and scattered thunderstorms continue to develop along and to the north of this frontal boundary over Montana and North Dakota.
Late Friday, radar shows this rain moving north across the border into southeastern Saskatchewan and southern Manitoba.
This system will be slow moving and this will set the stage for a potentially significant precipitation event to occur.
Rainfall totals are expected to range from 10 to 50 millimeters by the time the system moves out of the region Saturday evening.
Cold air will also work its way into the region Friday morning possibly changing rain over to snow.
If the changeover to snow occurs, areas between Moosomin, Saskatchewan northeast towards Berens River, Manitoba could see a couple centimetres of snow in addition to the rain by Saturday evening.