AREAS AFFECTED : SOUTH CENTRAL SISKIYOU COUNTY
AVWMFR
The Mount Shasta Avalanche Center has issued a BACKCOUNTRY
AVALANCHE WARNING for the following areas:
NWS Medford OR - CAZ082 (South Central Siskiyou County).
* WHAT...An exceptionally powerful atmospheric river will impact
the Mount Shasta region. Prolonged periods of heavy snowfall,
along with rain-on-snow will create high avalanche danger.
* WHERE...Avalanche terrain of Mount Shasta, Castle Lake, the
Eddy Mountains, and Ash Creek Butte area east of Mount Shasta.
* WHEN...In effect from Tue 12:00 PST to Thu 12:00 PST.
* IMPACTS...Intense rainfall and multiple feet of new snow will
produce large and destructive avalanches. These avalanches may
run long distances into flat terrain, valley floors, and mature
forests. In addition, debris flows are possible out of Mount
Shasta drainages such as Cascade Gulch, Ash Creek, and Mud
Creek.
* PRECAUTIONARY / PREPAREDNESS ACTIONS...Very dangerous avalanche
conditions. Travel in, near, or below avalanche terrain is not
recommended. Recreational users without backcountry avalanche
skills are advised to stay out of the backcountry. Deep snow
conditions exist.
Consult http://shastaavalanche.org/ or www.avalanche.org for more
detailed information.
Similar avalanche danger may exist at locations outside the
coverage area of this or any avalanche center.