The last reported human-triggered avalanches occurred back on February 23rd near Dnigi Hut and in Lone Tree Gulch. Observers on Monday found a large natural cornice-fall triggered slab avalanche on the north aspect of Granite Mountain. at~5000′. It ran to 4200′ (This is the bowl northwest of High Grade Pass). Time and date of the event are unknown. The cornice fall likely occurred during the warm temperatures last week.
HS-NC-R1-D2 Large natural cornice-fall triggered slab avalanche on the north aspect of Granite Mountain, ~5000′, ran to 4200′ (bowl northwest of High Grade Pass). Time and date of event unknown.
Closer view of avalanche above, showing blocks of debris larger than a person.
Weather at 3450′ since Saturday 2/2:
Temperatures averaged 21°F, with a low of 13°F and a high of 31°F.
Winds averaged N 3 mph, max 6 mph. Max gusts recorded were N 9 mph .
There has been about 1″ new snow recorded at Independence Mine.
Weather at 4500′ since Saturday 2/2:
Temperatures averaged 17°F, with a low of 12°F and a high of 25°F.
Winds averaged E to SSE 3 mph, max 9 mph. Gusts averaged E to SSE 6 mph, max gust 13 mph.
Stay tuned to the NOAA point forecast for an updated weather forecast each day. The best way to see if it’s snowing in Hatcher Pass is to look at the webcam snow stake HERE and the Independence Mine SNOTEL site HERE
State Parks Snow Report and Motorized Access information can be found here.