WASHINGTON, DC — A newly released forecast from the National Oceanic and Atmospheric Administration points to heavy snow in parts of three Western states next week. The agency’s Climate Prediction Center says the risk covers sections of eastern and northern California, southern Oregon and western Nevada.
The outlook is centered on November 14 and 15, when the pink-shaded area on NOAA’s U.S. Hazards Outlook Map could see the most significant snowfall. NOAA does not give a specific snow total in the map, but it does define heavy snow as at least 4 inches in 12 hours or 6 inches in 24 hours.
NOAA’s hazard map points to mountain snow from November 14 to 17
NOAA published the U.S. Hazards Outlook Map on November 6, 2026, for the period from November 14 through 20. The agency marked a broad area in pink to show where heavy snow could develop early in that window.
According to the Climate Prediction Center, the most notable threat is for high elevations in the Klamath Mountains and Sierra Nevada Mountains on November 14 and 15. That timing matters because the agency’s map is aimed at identifying weather hazards before they peak, giving residents and travelers a heads-up on what may develop.
The outlook also includes a slight risk of heavy snow at high elevations across the Cascades and parts of the Northern Intermountain, Great Basin and Central and Northern Rockies from November 14 through 17. That wider zone suggests the storm pattern could affect a larger swath of the West, even if the most intense snow stays concentrated in the mountains.
What NOAA means by heavy snow in its forecast
NOAA’s heavy-snow threshold is specific. The agency says the term applies when snowfall reaches 4 or more inches within 12 hours or 6 or more inches within 24 hours.
Because the map does not list exact inch totals for each location, the warning is best read as a hazard outlook rather than a precise accumulation forecast. For people in the highlighted areas, the practical message is that snowfall could become disruptive enough to meet NOAA’s formal criteria.
That distinction matters for mountain communities, where even moderate snowfall can change road conditions quickly. In higher terrain, the same storm can create very different impacts depending on elevation, travel routes and how long the snow lingers.
Ski country may welcome the first real snowfall boost of the season
The Klamath Mountains and Sierra Nevada Mountains are home to several ski resorts, so the forecast is likely to draw attention from operators and winter sports fans. Early storms can help build snowpack at a critical time, especially if temperatures stay cold enough to preserve what falls.
For resorts, a stronger snow base can help set up a better start to the winter season. For skiers and snowboarders, the same forecast can signal the possibility of usable terrain sooner rather than later.
Even so, the upside for recreation comes with the usual mountain travel tradeoff. Storm timing, road visibility and changing elevation can all make conditions more difficult for people heading into or across the affected regions.
The forecast window could shift as the week approaches
NOAA’s outlook covers an early forecast window, which means conditions can still change before the snow arrives. The agency’s map shows where risk is elevated, not exactly where every storm band will set up or how much snow each ridge will receive.
That makes the November 14 to 17 period the key stretch to watch. The strongest signal now is for high-elevation snow across the mountain zones, but any shift in temperature or storm track could alter where the heaviest totals land.
For now, the map gives residents, skiers and travelers an advance look at the kind of weather setup NOAA expects next week. The most likely impacts appear to be centered in mountain terrain rather than the lower valleys, where the hazard signal is less direct.
Why this NOAA map matters for Western travel and winter prep
Hazard maps like this are designed to flag the places most likely to feel winter weather impacts before those impacts become obvious on the ground. In this case, the pink zone stretches across multiple states, which is a reminder that early season storms can cut across a broad region.
For drivers, that can mean changing conditions on mountain passes and higher roads. For communities that rely on winter tourism, it can also mean a quick shift from autumn weather to a much more winter-like pattern.
The bottom line from NOAA is straightforward: mountain snow is possible to likely in parts of the West next week, with the most specific risk aimed at the Klamath Mountains and Sierra Nevada Mountains on November 14 and 15.