Avalanche.org: Map of avalanche forecasts for the United States. Navionics ChartViewer: Nautical charts and sonar depth maps for boaters, online.
| Avalanche.org | Navionics ChartViewer | |
|---|---|---|
| Category | Hiking, Ski & Outdoor Maps | Hiking, Ski & Outdoor Maps |
| Coverage | United States | Worldwide |
| Updates | Daily | Periodically |
| Data source | US avalanche centres | Navionics charts and community sonar logs |
| Made by | American Avalanche Association | Navionics (Garmin) |
| Price | Free | Free |
| Account | No account needed | No account needed |
| On phones | Works well on phones | Phone app available |
| Map view | Flat map | Flat map |
| Visits from ColorfulMaps | 0 | 0 |
| Open map | Open map |
What you can do with Avalanche.org
- Danger levels by forecast region
- Links to local avalanche centres
- Education resources
What you can do with Navionics ChartViewer
- Nautical charts worldwide
- Community sonar depth contours
- Marinas and points of interest
Summary based on public information. Check each map's website for current features and prices.