The Mt Roberts RWIS ESS is located adjacent to the Mt Roberts Trail at near the 1800’ level.
The Mt Roberts summit (3,819 ft) is to the south of the ESS.
This ESS is a cooperative site involving the Alaska Electric Light
and Power Company (AEL&P) the City and Borough of Juneau (CBJ),
the University of Alaska Southeast Environmental
Science program, and the DOT&PF Maintenance and
Operations. The site is in a tree cleared area just to the
north of Tram facilities with the surrounding area being
wooded. DOT&PF has supplied a Present Weather Detector,
with the other agencies providing snow depth, temperature, and
humidity sensors. Wind equipment on the Tram deck provides
wind measurements for the Juneau
Airport Wind System. Observations from the cooperative
site are available from the Mt.
Roberts Weather Station. Site Rationale
Thane Road, an urban commuter corridor and home of the Snettishim
power transmission line that provides most of Juneau’s
hydroelectric power needs, is located in in a prime
avalanche zone. See the four Thane Road sites for
additional background information. The Mt Roberts cooperative
site provides critical avalanche condition information covering
snow structure, liquid water content, environmental conditions, and
water flow through the snow pack. The Mt Roberts ESS
supplements the Thane Road avalanche camera detection