Changes are not only heading toward Montana, but also for much of North America. A lobe of the Polar Vortex will break loose from near the north pole and move into western Canada. The Polar Vortex breaks free more often then the mainstream media reports. This time, the vortex will not come down into the contiguous United States but it will have an impact on our weather into the beginning of May. The coldest air where temperatures will drop below 0, will remain well to the north of Montana. However, colder air and snow will hit the state on the final weekend of the month. Several storms will affect Montana through the end of April. Friday, an area of low pressure will produce showers and thunderstorms through the afternoon and evening. Snow levels will fall to between 5000-6000′ in western and central Montana, but up on the Canadian border north of Glasgow snow will mix in with the rain at times late in the day. Saturday starts out partly cloudy and breezy, but a strong cold front will move through in the afternoon and evening. Scattered showers and thunderstorms will develop ahead of the front, with rain changing to snow behind the front in the evening hours. Strong wind will increase out of the northwest. Snow will fall Saturday night into Sunday morning, with the strongest intensity being Sunday morning. Steady snow and gusty wind will reduce visibility. There will be enough cold air for the snow to stick on the ground, perhaps even the road surfaces. Snow will taper off through Sunday afternoon, so travel conditions will improve later in the day. Highs will only be in the 30s, 20s in the mountains. Sunday night’s lows will fall into the 10s and 20s, very cold for late April. Areas of snow will stick around Monday and Tuesday before moving out on Wednesday. Temperatures will warm up to near average by late in the week.
Have a nice day.