Rock Crk. Canyon survey, last in here 17th on skis (carried them in first 2K). Before our record MAR warmth 18th-21st. 4 days free-air frzng levels 4000m + melted snowpack below 2300m, what's left further up half gone. Aspen buds swelling looks like early May. Still, not nearly as bad as further S, much of the Western US now has record low SWE this date. Dire implications for rest of year. Weak system brought bit ❄️ cooling here overnite, 2-4C our hike. #climatecrisis #hiking #dogs #montana #gye