Where to Read More: Weather, Altitude, Avalanche, LNT, Terrain
Official agencies and course providers first, second-hand explainers second. Every source here has an authority behind it and a date attached.
Start with official agencies and recognised training bodies rather than blog summaries: national weather services, CDC's Yellow Book, NPS, Avalanche Canada, Leave No Trace, USGS topographic maps, NOLS and IFMGA. Use them for the underlying knowledge, but check the live facts — closures, transport, conditions — on the relevant official page the day you travel. Medical, rescue and insurance questions need professional judgement, not an article.
There is no shortage of outdoor information. The scarce thing is information with an author, a date and an institution behind it — and the discipline to know which layer a question belongs to.
Weather, altitude, first aid
- NWS Weather Safety — warnings, thunderstorms, heat and cold.
- CDC Yellow Book — high-altitude travel and altitude illness.
- NPS — outdoor safety, trip planning, wilderness ethics.
- Local meteorological and rescue services — closures, fire bans, rescue numbers.
Avalanche and technical terrain
- Avalanche Canada — forecasts, training, decision frameworks.
- CAIC (Colorado) — regional forecasts and accident reports.
- NPS Climbing — climbing safety and permits.
- IFMGA / AAC — course and guide systems. Technical skills require a course or a guide, not reading.
Lightweight travel and Leave No Trace
- Leave No Trace — the seven principles and their application in fragile environments.
- NPS LNT — the park-service version, with regional notes.
- NOLS — wilderness nutrition and course material.
Terrain and navigation
- USGS Topographic Maps — the US topographic standard.
- National mapping agencies — contour maps and protected-area maps for your own country.
- Paper map, compass and offline GPS together. Never a single app.
How to use this list
- First decide which layer the question belongs to: knowledge, live conditions, or a safety line. Live facts — closures, transport, conditions — come only from the official page, today.
- Sources have regions and dates. Medical, rescue and insurance questions do not resolve to an article.
- Keep the source, the link and the verification date at the foot of every article, and mark anything past its date as "needs checking".