Winter Weather Advisory Covers Helena Valley, Gates of the Mountains Through Wednesday

Icy roads and patchy blowing snow complicated the Wednesday morning commute across Lewis and Clark County as a Winter Weather Advisory issued by the National Weather Service's Great Falls office remained in effect through noon, covering the Helena Valley and Gates of the Mountains.

Snow fell mainly before 2:00 a.m., with blowing snow pushing through the valley before 9:00 p.m. Tuesday. Downtown Helena and surrounding higher terrain collected between 2 and 6 inches, while the Helena Valley saw up to 2 inches. Overnight temperatures dropped to around 28 to 30 degrees Fahrenheit, with northwest winds running 8 to 17 mph and gusts reaching 24 mph. The NWS warned that "hazardous conditions could impact the Wednesday morning commute" and cited potential power outages and dangerous travel. Drivers can check real-time road conditions through Montana's 511 road conditions service.

The Helena Valley and Gates of the Mountains advisories were part of a broader late-season system sweeping central and western Montana. Local meteorologists described the storm as "April Fooling Montana with Winter Weather." The Little Belt, Big Belt, Highwood, Crazy, Absaroka, Beartooth, and Gallatin mountain ranges all fell under a more serious Winter Storm Warning, with some peaks forecast to receive up to 20 inches of snow. Canyon Ferry, the Madison River Valley, Missouri Headwaters, and Cascade County below 5,000 feet were also under winter weather advisories.

Gates of the Mountains, the Missouri River canyon sitting roughly 20 miles north of Helena at the northwest end of the Big Belt Mountains, carries particular historical weight on a day like this. Meriwether Lewis named the site on July 19, 1805, when the Lewis and Clark Expedition passed between its towering limestone cliffs. The canyon is now home to the federally designated Gates of the Mountains Wilderness, created by Act of Congress in 1964 and managed by Helena National Forest, and draws tourists as a boat tour destination positioned roughly halfway between Yellowstone and Glacier National Parks.

April snow in Helena is less an anomaly than a documented pattern. The city averages 42 inches annually, well above the national average of 28 inches, with snowfall possible from October through April. Helena's single-day record stands at 18.8 inches, and its all-time cumulative season total reached 91.5 inches in the year ending December 31, 1967. By those measures, Wednesday's accumulation lands firmly within the range the region has always absorbed.