New Hampshire Avalanche Map Layers

---

"What's the danger?" Here are autogenerated DEM Shading rules for each advisory zone that allow for quickly adding avalanche danger, problems, and sun angle layers to CalTopo maps. Reports sourced from avalanche.org.

Show Instructions

Digital Elevation Model (DEM) shading let's you create custom shading schemes based on elevation, slope, aspect and tree cover.

---

Avalanche Report

Danger report updates are fetched at 7:33pm and 7:33am. The selected elevation bands are not meant to be exact, but represent a characteristic of the terrain which varies locally.

The highest band typically includes alpine areas beginning as the treeline transitions into open slopes extending to ridges and peaks.

The middle band is typically a narrow transition zone between dense forests and treeless alpine areas.

The lowest band typically extends from valley floors or snowline to near treeline.

---

Usage

You'll find that Terrain Modeling in the left pane will show layers that can be turned on and edited. The right pane will show Custom Layers that can be toggled on or off.

Select A Zone: Presidential Range

Copy to clipboard

Pre-populated CalTopo Map

Download Zone Shape

Presidential Range
Avalanche Report

Report not available. See MWAC for more information.

Issued at: Friday, May 10, 2024 6:51AM
Issued by: MWAC

Sunlight Angles

Time of day	Lighting (Az/Z)
2024-05-11 05:40AM Shade	67 by 2 Copy to clipboard
2024-05-11 07:10AM Shade	82 by 17 Copy to clipboard
2024-05-11 08:40AM Shade	97 by 34 Copy to clipboard
2024-05-11 10:10AM Shade	117 by 49 Copy to clipboard
2024-05-11 11:40AM Shade	149 by 61 Copy to clipboard
2024-05-11 01:10PM Shade	195 by 63 Copy to clipboard
2024-05-11 02:40PM Shade	233 by 54 Copy to clipboard
2024-05-11 04:10PM Shade	256 by 39 Copy to clipboard
2024-05-11 05:40PM Shade	273 by 23 Copy to clipboard
2024-05-11 07:10PM Shade	288 by 8 Copy to clipboard

---

Change Regions: California Wyoming Oregon Alaska Montana Idaho Arizona New Hampshire Washington New Mexico Utah Colorado Canada

If you enjoyed this or found it helpful, please consider buying an espresso to keep the flow going.

Show Known Issues