Choose a safer site, get off the ground, block the weather, and keep the shelter from becoming a second hazard.
Shelter is a system, not a sheet of material
An emergency shelter must address the site, ground, wind, precipitation, ventilation, clothing, and the person inside it. A perfect tarp pitch in a flood channel or beneath a damaged tree is still a dangerous shelter.
Emergency: call 911 or the local rescue authority for serious injury, altered mental status, suspected hypothermia or heat stroke, breathing trouble, or dangerous exposure. Move from an immediate threat when you can do so safely and follow official instructions.
First decision: move or shelter here?
Identify immediate threats. Look for rising water, a dry wash or flood channel, surf or tide reach, wildfire and smoke, avalanche or rockfall paths, unstable slopes, dead or damaged overhead branches, exposed ridges, isolated tall objects, and traffic.
Move only as far as safety requires. If rescuers are looking for you, communicate the new position and direction when possible. Avoid turning a short relocation into unplanned travel.
Choose the best available compromise. Favor stable, drainable ground with natural wind reduction, adequate visibility, a safe exit, and enough room to deploy equipment without damaging the area.
Act before dexterity and judgment decline. Add layers, protect insulation, and deploy shelter before darkness, heavy precipitation, or cold makes the work harder.
Above: dead limbs, leaning or fire-damaged trees, loose rock, ice, snow loading, utility lines.
Around: wind funneling, water marks and debris, animal activity, unstable surfaces, roads, fire spread, and a safe exit route.
Below: drainage, cold or saturated soil, sharp objects, slope, hollows where cold air or water can settle, and fragile vegetation.
Beyond: changing weather, stream rise, tide, smoke direction, visibility to rescuers, and distance to a truly safe building or vehicle.
Do not seal yourself in. Maintain ventilation, an exit you can operate, and separation from flames, stoves, heaters, and exhaust. Never use a fuel-burning stove, grill, or generator in a tent or other enclosed shelter.
Build four protective layers
1. Ground
Use a sleeping pad, pack, spare clothing, dry natural material where permitted, or another barrier. Prioritize the torso and hips while avoiding pressure and circulation problems.
2. Body
Replace or isolate wet clothing when possible. Add dry insulation and wind/rain protection without trapping the face or restricting breathing.
3. Weather shell
Deploy a tarp, bivy, tent, emergency blanket, or poncho. Pitch low against wind, direct runoff away, secure every component, and retain ventilation.
4. Monitoring
Recheck the person and shelter. Watch for worsening shivering, confusion, unusual behavior, loss of coordination, breathing changes, overheating, headache, nausea, or faintness. Check anchors, pooling water, snow loading, abrasion, condensation, and wind shifts.
Hazard-specific adjustments
Cold and rain: stop conductive heat loss to the ground, protect insulation from water, block wind, and keep the head and neck insulated without covering the airway. Suspected hypothermia needs medical help and gentle handling.
Heat: seek shade and airflow, reduce exertion, loosen unnecessary clothing, and use available water for active cooling when heat illness is suspected. Heat stroke—especially confusion, collapse, or altered behavior—is an emergency.
Wind: use terrain as a windbreak only after checking falling-object and rock hazards. Lower the profile, orient the narrow end into wind, reinforce anchors, and prevent fabric from flapping against skin or equipment.
Snow: avoid avalanche paths, tree wells, cornices, roof-shed zones, and buried waterways. Insulate below, manage ventilation, and prevent accumulating snow from blocking exits or vents.
Lightning: a tent, tarp, pavilion, or isolated tree is not safe lightning shelter. The National Weather Service advises a substantial enclosed building or hard-topped enclosed vehicle. If neither is reachable, outdoor actions only reduce risk; they do not make the location safe.
Flooding: do not shelter in washes, streambeds, narrow canyons, low crossings, or below water marks. Never enter moving floodwater to save equipment.
Adaptive shelter planning
Practice the setup using the actual reach, grip, vision, hearing, balance, and mobility available—then simplify knots, anchors, and packaging.
Keep medications, rescue items, communication tools, footwear, and mobility equipment inside reach and protected from water.
Use a ground plan that supports transfers and pressure relief. Pad hard components and prevent moisture, grit, or fabric folds from contacting vulnerable skin.
Protect prosthetic liners, wheelchair cushions, batteries, and electronics from temperature extremes and condensation. Do not place battery systems against heaters or open flame.
Assign setup roles before the trip and carry accessible backups: pre-tied guylines, large zipper pulls, high-contrast cord, repair materials, and anchors suited to the terrain.
Common shelter failures
Ground is ignored: the roof is dry, but the person continues losing heat to wet or cold ground. Add insulation below first.
Shelter is overtightened or sealed: condensation wets insulation or airflow is restricted. Restore ventilation without exposing occupants to direct wind or rain.
Runoff enters: pooling water follows the slope or tarp edge. Relocate from unsafe drainage; otherwise adjust pitch and redirect runoff without excavating damaging trenches.
Anchors fail: cord cuts, stakes pull, or fabric tears. Lower wind exposure, spread loads, protect contact points, and use redundant anchors.
Heat source creates a new emergency: flame, hot exhaust, or carbon monoxide threatens occupants. Extinguish or move the source outside and away; ventilate and seek emergency help for symptoms or suspected exposure.
The shelter becomes invisible: camouflage delays rescue. Place bright signaling material where it is visible without weakening the shelter.
A safe 20-minute deployment drill
Practice in familiar, managed terrain during safe daylight weather, with permission and a normal shelter nearby.
Complete the 60-second site check aloud and identify one reason to reject a possible site.
Start a 10-minute timer. Deploy ground insulation and weather protection using only carried equipment.
Enter safely, locate the exit, check ventilation and runoff, and retrieve light, communication, medication, and repair items.
Repeat one setup with gloves, limited grip, or low light—without creating a fall or entrapment hazard.
Inspect every component for tears, wetness, weak anchors, inaccessible controls, and slow steps. Repair and repack it immediately.