Monday March 25, 2019
Cornice Fall, Loose Wet
Travel & Terrain Advice
When temperatures warm and rain on snow occurs, this should be your trigger to avoid steep terrain, Identify and avoid travelling both on and below cornices.
No new avalanches have been reported in the past 72 hours.
Large cornices exist in the alpine and at treeline, predominately on north aspects. When temperatures warm, expect cornices to be touchy to light triggers and when triggered, will produce large avalanches up to size 2.
Found on all aspect and elevations, these hazardous avalanche problems will present when temperatures warm and especially during periods of snow on rain. Expect that during these warm and wet periods loose wet avalanches will be touchy to light triggers and if triggered will produce large avalanches up to size 2.
A cooling period has formed a melt freeze crust at the surface that is supportive to both ski and boots . Below this the snow is wet and moist. During periods of warming, expect this melt freeze crust to break down with the entire upper snow pack becoming unconsolidated. The mid snow pack has a melt freeze crust that has facets both above and below and is reactive to testing. The lower snow pack is well settled and dense.
|Surface||A supportive melt freeze crust.|
|Upper||Wet and moist.|
|Mid||Two crusts are down 50 and 70 cm and are reactive to testing.|
A period of warm temperatures have been followed by cooling and up to 5 mm of precipitation. Above 1400 meters this precipitation fell as snow. Winds where generally light from the south east.
A low pressure approaches Monday night bringing to the forecast area, increasing wind, precipitation and high freezing levels.
Monday 1 mm of precipitation , Winds moderate from the East north east, Freezing levels 1800 meters.
Tuesday 10 mm of precipitation , Winds moderate from the South, Freezing levels 1200 meters.
Wednesday 1 mm of precipitation , Winds moderate from the East north east, Freezing levels 1200 meters.
Posted on Monday March 25, 2019 by Jesse Percival