Wraparound moisture drove easterly flow into the upslope areas of the central Colorado mountains with banded precipitation forming on the northern side of a low pressure system as it was exiting to the east. This banded precipitation allowed for moderate to heavy snowfall rates to fall during the overnight hours across the southern portion of the Elk Mountains and northern portion of the West…
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Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS GJT wrote it up.
Wraparound moisture drove easterly flow into the upslope areas of the central Colorado mountains with banded precipitation forming on the northern side of a low pressure system as it was exiting to the east. This banded precipitation allowed for moderate to heavy snowfall rates to fall during the overnight hours across the southern portion of the Elk Mountains and northern portion of the West Elk Mountains and Sawatch Mountains. Given the late season nature of this event, this snowfall was significant but impacts remained minimal as roads remained wet with snow accumulating mainly at elevations above 11,000 feet.
The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Grand Junction, CO wrote its last area forecast discussion before the first event at May 11, 4:01 PM MST, 1 hour 59 minutes earlier.
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</html>The national radar mosaic for the moment the first event began.
2 winter weather. Local standard time, as filed.
Generally 6 to 11 inches of snow fell across the southern half of the area at elevations above 11,000 feet. 6 to 8 inches of snow fell at the Snowmass and Aspen Ski Areas.
Generally 4 to 11 inches of snow fell across the northern half of the area at elevations above 11,000 feet. 10.5 inches of snow was measured at Crested Butte 6.2 N.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Colorado in 2024Every state in 2024This day in weather historyWarnings in Colorado, May 2024
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-10-01. Each event’s entry at NCEI: 1181317, 1181318.