Below you will find detailed and current Appalachian Trail snow conditions for the entire trail. This is not a 'snow pack' chart. This chart shows 'trail snow'. 'Snow pack' and 'trail snow' can differ significantly. Where the AT traverses the highest terrain, the AT snow conditions will almost always exceed snow pack.
'Snow pack' is determined from relatively few physical snow sensors covering an entire mountain range of which most are not on or near the AT. For instance, the previous postholer snow page relied on about 2 dozen sensors across thousands of miles of trail. Much of the AT has no sensors, thus no coverage.
The charts here rely entirely on data from SNODAS modeling from NOHRSC/NSIDC. For example, the PCT has 5,300+ data points and the CDT 6,000+. Each trail has a point every half mile/within a half mile of the trail or better. This is a huge improvement in accuracy of AT snow conditions. These snow graphs allow you to view the AT in a way no one has before.
Click image for larger version or this Large Full Detail Image - Chart updates every 3 or 4 days from Nov 1 to Jul 28.
Google Trail Map with Snow Overlays: Snow Water Equivalent :: Snow Depth :: Snow Coverage :: 24 Hour Snow Precip :: 24 Hour Non-Snow Precip :: 24 Hour Snow Melt :: 24 Hour Avg Snow Pack Temp :: Snow Density :: 24 Hour SWE Change :: 24 Hour Snow Surface Sublimation :: 24 Hour Blowing Snow Surface Sublimation
This table has locations with SWE ordered from highest to lowest. Only locations with an average SWE greater than 3 inches are shown. Elevations are in feet, other values are inches unless otherwise stated. Click on column heading to sort by that column.
|Trail Mile||Dec 13, 2018 - Locations within a mile of measurement||SWE||SWE Avg||% SWE Avg||Elev|
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