Avalanche

Tatoosh Range

MORA NPS RangersWest Slopes South
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Observation photo 1Observation photo 2

Quick report

Numerous large avalanches in visible terrain on steep slopes, convexities, and ridgelines. Since March 9 we have accumulated 86.3 inches of snow with a water equivalent of 11 inches. The peak rate of snowfall (S5) occurred during the 13th with over 30" snow and 3.60 inches water. The weak layer in roughly 75cm down where 1F snow interfaces with 4F in our test pit on 3/13. We played it safe today. The wind and rapid warming forecasted will contribute to future instability

Avalanche

Size
D2.5
Aspect
NE
Trigger
N
Elevation
5500 ft

With limited visibility at Paradise we were able to see some remnants of avalanches in the Tatoosh Range. Primarily we saw crowns and debris on slopes facing north through east from our southern aspect. The crowns were estimated to be 3-4 feet deep with one anomaly stepping into old persistent layers from the 2/13 crust which was closer to 6-8 feet deep. Rapid settling and a thin sun crust from yesterdays late-day sunshine was apparent in the new surface snow.