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Stay found. Stay informead. Our premium printed topographic maps and matching app for a once in a lifetime adventure
OnLine Data Books
Free online data books for your favorite trail, distances, elevation, climate, way points, terrain & fauna
GPS aware Google maps, your location, topo, hybrid, satellite, trail track, way points, road, weather/snow overlays
Get the lastest snow conditions for your favorite trail. Quantity, coverage, SNODAS, MODIS, historical and multi-year comparisons
Create an extensive hike plan easily configurable to your hiking style. Distances, days, resupply, access points, etc
Complete Gear Lists
Hundreds of complete gear lists by those that walked the walk.
The big picture. Single elevation profile of your favorite trail.
Search for a journal, create a journal, add/edit an entry, configure your journal, EMail updates, integrated Google trail map, PLB locations and more
Source for trail and site information or just talk about your favorite trail
The Long Trail snow report is designed to aid hikers in determining the best time to head into the mountains based on snow conditions. Each hikers skill-set and comfort level with these conditions will differ.
The Long Trail snow report uses SNODAS modeled snow data and MODIS reflectivity data. SNODAS gives us a good idea about the quantity of frozen water sitting on the ground, denoted by SWE (Snow Water Equivalence) in inches. Coverage is often poorly represented by SNODAS where snow cover is thin. The 8 day MODIS data, without regard for quantity, shows us what areas were snow covered at some point over the last 8 days. Cloud cover and darkness adversely affects MODIS detection significantly, hence we use the 8 day as opposed to the single day coverage.
Trail snow is not snow pack. The Postholer snow page focuses on snow on or near the trail, at trail elevation, not on snow condtions thousands of feet lower/higher and miles away from the trail. Ski resort snow reports and snow pack charts are a very poor representation of trail snow conditions.
SNODAS SWE, Entire Trail
SNODAS/MODIS, LT Entire Trail
SNODAS SWE, LT Entire Trail
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