A spring-like heat wave is turning Colorado’s mountains into a deadly trap. The Colorado Avalanche Information Center now rates most zones at Considerable or High danger, warning that even small slopes can release massive wet slides capable of burying people alive.
The sudden temperature swing has caught many skiers and riders off guard. What feels like perfect corn snow on the surface hides a snowpack that is rapidly falling apart underneath.
Warm Temperatures Trigger Statewide Instability
Colorado is seeing daytime highs 15 to 25 degrees above normal for early April. In the last week, temperatures in the high country have repeatedly climbed into the 40s and even low 50s.
This heat is forcing liquid water deep into the snowpack for the first time this season. Weak layers buried since December are now collapsing under the weight of water, creating the perfect recipe for large and unpredictable avalanches.
The CAIC reported natural wet slab avalanches up to 3 feet deep and 500 feet wide in the northern mountains on Wednesday alone. Forecasters say the danger will peak again this weekend as another warm, sunny stretch arrives.
Central and Northern Mountains Face Highest Threat
The worst conditions are centered in the zones that hold the most backcountry traffic.
Aspen, Vail, Summit County, and the Sawatch Range are all rated Considerable at all elevations. The Front Range, Steamboat, and Park Range zones sit one step higher at High danger above treeline.
“We haven’t seen a warmup this fast and this deep into the snowpack in years,” said Ethan Greene, director of the CAIC. “The entire state is primed for big avalanches that can run farther than people expect.”
Highway avalanche paths remain the one bright spot. CDOT crews have been aggressive with mitigation work and no road closures are planned yet.
Backcountry Travelers Take Most of the Risk
Resorts are controlling their in-bounds terrain, but anyone who ducks a rope or hikes out a gate is on their own.
The CAIC recorded more than 50 human-triggered slides last weekend, several of which buried people partially or fully. Two groups escaped only because partners were able to dig them out quickly.
If your boots sink past your ankles in the parking lot, the snowpack is already too warm and weak for steep terrain. That simple test has become the clearest red flag this week.
What You Must Do Right Now to Stay Safe
Every expert is delivering the same blunt message: avoid steep slopes entirely until conditions stabilize.
Here are the non-negotiable rules for the next week:
- Check the CAIC forecast every single morning at avalanche.state.co.us
- Stay off any slope steeper than 30 degrees, no exceptions
- Carry beacon, shovel, and probe, and know how to use them fast
- Travel one at a time on suspect slopes
- If the snow feels wet and heavy or you see rollerballs coming down, turn around immediately
The CAIC is begging people not to let perfect weather fool them. “Blue skies and soft snow feel amazing,” Greene said, “but right now those are the exact conditions that kill experienced people.”
Colorado has already recorded four avalanche deaths this season. No one wants to add to that number during spring break.
Stay low-angle, stay alive, and check the forecast again tomorrow. The mountains will still be here when the snowpack firms up.
What are you seeing out there this weekend? Drop your observations in the comments and help keep everyone safe.
