Somewhere along Interstate 80 on the final weekend of April, a truck driver is squinting through what the Cheyenne National Weather Service kindly described as “patchy, dense freezing fog.” Brake lights are seen smearing into the white on a webcam. By any standard, spring ought to be well underway. The Rockies missed the memo.
Colorado, Wyoming, and Montana are experiencing a late-season storm that is dumping anywhere from a few inches in the foothills to almost two feet across the higher passes. When forecasters use the word “dangerous,” they don’t usually use it carelessly. Reading the bulletins gives me the impression that this storm is more like the kind of storm that people in the Mountain West typically associate with February than a typical spring squall.
| Key Information | Details |
|---|---|
| Event | Late-season heavy snow and winter storm advisories |
| States Affected | Colorado, Wyoming, and Montana |
| Snowfall Range | 3 to 24 inches, depending on elevation |
| Wind Gusts | Up to 45 mph in exposed areas |
| Issuing Agency | National Weather Service (NWS) |
| Most Vulnerable Routes | Interstates 25, 80, and 90, Powder River Pass, Granite Pass |
| High-Risk Zones | Sawatch, San Juan, Sierra Madre, Snowy, and Bighorn Ranges |
| Travel Advice | Limit travel, dress in layers, and carry emergency winter kits |
| Duration | Sunday afternoon through Monday morning, with lingering showers |
| Outlook | Conditions ease mid-week; warmer, drier by next weekend |
With winds reaching 45 mph, the south central region of Colorado, which includes the eastern Sawatch and San Juan Mountains, is looking down five to ten inches. That number increases to about twelve when you move west into the Flat Tops and the West Elk Mountains. The Denver and Boulder NWS offices issued warnings about dangerous mountain passes, slick roads, and nearly complete visibility. Many weekend plans are quietly canceled by this type of forecast.
Wyoming is suffering the most. Higher elevations in the Sierra Madre and Snowy Ranges could see six to twelve inches, and a social media post from the Riverton office called their own parking lot “rather nasty” with moderate snow, gusts exceeding forty miles per hour, and slick roads. The most straightforward advice was given to hikers, hunters, and snowmobilers: avoid getting caught in this. It’s easy to forget how quickly a well-known trail can become confusing due to blowing snow.
Although more contained, Montana’s portion of the storm is still dangerous. Along the Rocky Mountain Front, up to six inches are predicted; Marias Pass is at the higher end. Four to nine inches are expected to fall between Sunday afternoon and Monday noon, heading down toward the Pryor Mountains and the northern Bighorns. On Monday morning, anyone traveling along the Wyoming–Montana border should anticipate a slow commute, if one occurs at all.
A heavy snow warning this late in the season has an almost theatrical quality. Summit County skiers will most likely accept it as a gift. Ranchers refuse to. A foot of wet, heavy snow with 35 mph winds across northeast Johnson County is the kind of detail that doesn’t make national news but is crucial on the ground in areas of Wyoming where the calving season is still ongoing. It’s difficult not to consider how unevenly the weather lands when observing this from a distance—the same storm, very different outcomes.
If there is any good news, it is that the NWS seven-day outlook flattens out rather quickly. Overnight lows drop into the mid-20s, daytime highs return to the 40s and low 50s, and gusty winds persist through Thursday with minimal new accumulation. The area should resemble spring by next weekend. Until then, the standard but worthwhile advice is to slow down, leave space, dress in layers, keep the necessities for an emergency in the car, and frequently check the forecast because advisories can subtly turn into warnings.
People may only remember this storm as a bad weekend. It’s also possible that someone will have a story to tell for years tonight somewhere along a remote highway, which is what makes the Mountain West so fascinating. In any case, the snow is on its way. The forecasters have fulfilled their role. The rest is tolerance, prudence, and the quiet acceptance that sometimes winter simply won’t go away on time.
