3D Avalanche Hazard Map

The map below is based on the advisory HERE:

Danger Scale Ratings:
1 – LOW
4 – HIGH
A zone with “No Rating” can mean that there is not enough snow for a rating, or that the last forecast has expired. The daily advisory expires at Midnight. After midnight, or after the season ends, the map should show “No Rating” until a new Daily Advisory is posted by the Mount Washington Avalanche Center.

This map is for planning & reference purposes only. Actual observed conditions may be significantly different than the avalanche forecast map, and weather forecast. This map is not intended for navigational use in avalanche terrain. The 18 avalanche micro-forecast areas shown are cartographic representations for public safety outreach & education purposes only.  This map is not produced by the US Forest Service.  Although this map does not show any danger of natural & human-triggered avalanche activity outside the Mt Washington Avalanche Center’s 18 micro-forecast zones, additional avalanche terrain is located elsewhere across the White Mountain National Forest, and avalanches occur regularly outside the 18 zones shown on this map.  Safe travel requires training and experience making your own snow stability assessments and terrain choices. The Steep Slopes overlay may help identify additional avalanche terrain.

North American Avalanche Danger Scale

Échelle de danger en français

This map demonstrates a CesiumJS web map embedded in a “dynamic” WordPress Post, using the WordPress PlugIn I have developed; this 3D map Post should display identical avalanche ratings as the “static” WordPress Page demo with a similar title.

3 comments on “3D Avalanche Hazard MapAdd yours →

  1. The Mount Washington Avalanche Center has begun posting daily advisories for the 2018-19 season. The Avalanche Hazard forecast zones have changed dramatically. The map now shows a Presidential Range zone with an overall danger rating. This map is no substitute for reading the full advisory text, and the latest Observations posts.

  2. The Mount Washington Avalanche Center has issued the final daily advisories for the 2017-18 season. The Avalanche Hazard Map will show gray polygons with ‘NO RATING’ until November or December 2018.

  3. Note that the “ESRI World Imagery” base map option shows satellite images of Mount Washington with a late Spring snowpack on April 14, 2014 at half-meter resolution. “The New Hampshire 2015 statewide imagery” option shows aerial images of Mount Washington with a late Spring snowpack on May 14, 2015 at 1-foot resolution. Use the 2nd button from left, at top of page, to change the base map imagery. The USA Topo is cool, too!

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