"Confidence is highest from Monday afternoon, March 16, through Tuesday afternoon, March 17, when southern Chile and the northern Patagonian Andes should see the steadiest snowfall. After that, Tuesday night through Thursday trends drier for most resorts, and the next push into the central Andes near Santiago looks more modest, more elevation-dependent, and less certain on amounts."
"Snow-level guidance is reasonably clustered as well, generally around 1,100 to 1,700 meters at Chapelco and Corralco, while Nevados de Chillán spends more time closer to 1,800 to 2,000 meters, so the higher terrain is favored and the northern edge of the storm runs wetter. Wind guidance is also fairly consistent in showing exposed ridgelines gusting around 50 to 90 km/h during the steadiest hours."
"Snow ratios mostly fall in the 3-10 range, which points to dense to moderate snow rather than especially light snow. The practical takeaway is that the early-week snowfall is meaningful, but it comes with heavier snow and some mixed precipitation risk near lower elevations and along the northern fringe."
South America's southern Andes will experience the most reliable snowfall early in the week, particularly from Monday afternoon through Tuesday afternoon, March 16-17, affecting southern Chile and northern Patagonian regions. Snow levels range from 1,100 to 2,000 meters depending on location, with wind gusts of 50-90 km/h on exposed ridgelines and dense to moderate snow ratios. Following this system, conditions turn quieter from Tuesday night through Thursday with minimal new snow. A subsequent central Andes system near Santiago is expected later in the period but appears lighter, more elevation-dependent, and less certain regarding snowfall amounts. Beyond March 22, another southern signal remains possible but should be considered speculative due to timing and intensity uncertainties.
Read at SnowBrains
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