This dashboard provides an interactive viewer for the Bridger-Teton Avalanche Center (BTAC) historic avalanche and weather dataset. Plots are updated daily, and are current to the previous day's data.
These plots display long-term historical data (or "white sheet" data) from the BTAC. Weather stations at Jackson Hole Mountain Resort include Rendezvous Bowl plot (9,580'), Raymer plot (9,360'), Mid-Mountain plot (8,180'), and Rendezvous Summit (10,450').
Avalanche events submitted by the public or recorded by BTAC forecasters are color-coded for crown depth. Note that crown depth is often estimated by observers. 'Area' includes events from avalanche control work at Jackson Hole Mountain Resort, and 'BC' is all recorded backcountry events, including the JHMR sidecountry.
Snow depth is manually measured from a total snow depth stake, and 24-hr new snow and snow water equivalent (SWE) are measured using a SnowMetrics density tube. Measurements represent previous 24-hr totals, and are taken at approximately 10 AM daily. SWE is displayed as SWEx10 to enable quick estimation of new snow density. For example, new snow and SWEx10 bars of equal height represent 10% density. Settlement is calculated as [total depth previous day] + [24-hr new snow] - [total depth current day].
Calculated from 24-hr measured SWE, using rolling cumulative sums over the specified window length.
Calculated from 24-hr new snow and SWE values, and represented as a unitless fraction following standard SWAG methods.
Includes minimum and maximum values during the previous 24 hrs.
Recorded at Rendezvous Summit, expressed as miles per day (total miles of wind in previous 24 hrs).