Heavy rain in northwest Montana overnight
Though much of western Montana experienced a break in the rain Friday afternoon, it will return late evening as another wet Pacific storm system moves into the region. Heavy rain is expected along the Montana-Idaho state line and around northwest Montana, with flood warnings and advisories in effect for parts of Sanders, Mineral and Lincoln counties until Monday. The rain will begin late Friday night and last well into Saturday evening for northwest Montana. Those traveling along the I-90 corridor should take caution with the potential for ponding and standing water. Areas could see between 3/4 of an inch up to 1 1/2 inches of rain between Friday night and Monday morning. Late Saturday night into Sunday morning the rain will start moving into southwest Montana. Butte and Bozeman could see a rain-snow mix or graupel showers. Southwest Montana should not experience rain as heavy nor as widespread as conditions in northwest Montana. Flood watches remain in effect for Beaverhead County and the area near White Sulphur Springs. Their warning is not so much for rainfall but for unseasonably warm temperatures over the weekend leading to increased snowmelt. Winds are expected to pick up Saturday afternoon across the entire region and sit between 15 and 25 mph with gusts up to 35 mph. Snow could accumulate over Lolo, Lost Trail and Lookout passes Saturday night with potential ice on the road Sunday morning.