AI is saying there’s a ‘Monster’ El Niño developing. We can only hope they’re right…
A strong or "huge" El Niño changes the atmospheric jet stream, typically shifting the storm track farther south across the United States. Because Colorado sits right on the boundary between the cooler, wetter southern storm track and the drier northern tier, the impacts vary significantly depending on where you are in the state.
Historically, strong El Niño events produce key pattern shifts across Colorado:
1. High-Impact Snowstorms on the Front Range & Eastern Plains
During powerful El Niño winters, the jet stream dips low enough to pull subtropical moisture up into the Southwest. This configuration frequently generates slow-moving, low-pressure systems (upslope storms) that dump heavy, wet snow along the I-25 corridor, Palmer Divide, Denver metro, and Eastern Plains.
2. A Big Boost to Southern & Southwestern Mountains
Mountain ranges that benefit from south/southwest flow—such as the San Juans (Durango, Telluride, Wolf Creek Pass)—see the strongest positive correlation with El Niño. They tend to end up with significantly above-average snowfall and snowpack.

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