A special avalanche advisory remains in effect statewide as Colorado currently shifts from a winter-like storm cycle to more typical spring conditions, according to an update shared by the Colorado Avalanche Information Center (CAIC). While recent May weather brought widespread snowfall across the high country, forecasters warn that the coming days could bring sudden and unstable conditions as skies clear and sunshine rapidly warms the snowpack. While more seasonal weather is expected starting Thursday, the shift in conditions is not without risk. CAIC warns that this rapid change can trigger both storm slab and wet loose avalanches, depending on the timing of sun exposure and elevation.
Before the sun emerges, backcountry users may encounter dry storm slab avalanche conditions. Once the sun hits the snowpack, loose wet avalanches become a growing concern. Snow totals from recent storms have varied significantly across the state, with some areas receiving up to four times more snow than others. These variations depend on location, aspect, and elevation.
“A Special Avalanche Advisory remains in effect as we move from winter conditions to full-on spring in a short time,” the CAIC wrote on social media. “Expect sudden changes when the clouds finally part and the first intense sun on the dry snow causes rapid change. This is why new snow and wet snow avalanche problems are both listed across the state: You need to be prepared for both depending on when and where you travel.”
CAIC staff are actively working with the Colorado Department of Transportation on avalanche mitigation efforts, including at Independence Pass, as preparations continue to reopen high mountain roads for summer. Backcountry travelers are advised to remain vigilant and check the latest avalanche forecasts at colorado.gov/avalanche before heading out.