Just found this update of the search area off of inciweb (via supertopo)

"Backcountry snow instability and weather issues (including high winds) have been a significant challenge. Both aerial and ground searched have identified avalanche activity, cornices, and snow bridges throughout the wilderness, including along the Sierra High Route. The search zone has been determined to be larger than the State of Rhode Island and consists of the 195-mile Sierra High Route as well as multiple points of potential exit.

In previous days, Inyo SAR was busy with aerial reconnaissance; areas covered included trails and surrounding area near Kearsarge Pass and Onion Valley Road. CHP Inland Division Air Operations assisted. Sequoia and Kings Canyon National Parks performed searches via air along with on the ground in areas that were determined to be safe and accessible in the vicinity of Cedar Grove.

Future plans include inserting Inyo SAR and Mono SAR team members below Kearsarge Pass near Big Pothole Lake. Additional ground searches are also being coordinated by multiple agencies if searchers feel they can be inserted safely- avalanche issues will remain a point of concern."

This might be familiar territory to the WP crew