Dzikedzo lée le togbɛ aɖe si woɖe ɖe go alo tsi si le ʋuʋu ɖi dzi¶
Xexlẽme kpatawo toa vovo le dukɔ ɖesiaɖe me. Axa sia zã 911, si nye xexlẽdzesi na United States kple Canada. Dukɔ bubu geɖewo zãa 112, 999, alo xexlẽdzesi bubu. Di xexlẽdzesi si le miaƒe dukɔa me.
Be woalé ame le atiwo tame le togbɛwo ƒe togbɛ aɖe dzi alo do go le ta si le ʋuʋu ɖi alo ƒuta ƒe atsiaƒu dzi ne cumulonimbus dziɖegbe aɖe tu ɖe yame nye yame ƒe nɔnɔme kpata siwo wua ame wu le gota la dometɔ ɖeka. Le to kɔkɔwo dzi kple le tsi gbadzawo dzi la, zi geɖe la, wòe nyea teƒe kɔkɔtɔ alo teƒe si me tsi tona wu meta alafa geɖe le go sia go me, eye tɔsisi nyui siwo yi dzi ate ŋu atso tso wò ta, todzizɔtiwo, alo tɔdziʋu ƒe ʋuƒo dzi sɛkɛnd ʋɛ aɖewo hafi alilikpo si ƒe didime nye ampere 30,000 naƒo ƒu. Be nàtsi agbe le dzikedzo ƒe nɔnɔme kpata si woɖe ɖe go me bia be nàde dzesi elektrikŋusẽ ƒe nuxlɔ̃amedzesiwo enumake, nàɖiɖi kɔkɔme tso togbɛwo kple togbɛwo dzi wòazu ati siwo sɔ alo anyigba si bɔbɔ, eye nàma wò ƒuƒoƒoa dome meta 15 va ɖo 30 ya teti (afɔ 50 va ɖo 100) be nàkpɔ egbɔ be agbetsilawo ate ŋu awɔ dɔ CPR ƒe dɔwɔwɔ, wò afɔwo ɖeɖeɖa tso anyigba ƒe afɔɖeɖe ƒe elektrikŋusẽ gbɔ, kple tɔdziʋu siwo le ʋuʋu ɖi dzi kpɔkpɔ ne èɖo ƒuta manya wɔ o.
Wɔ esia fifia¶
- Drop off peaks, ridgelines, and open water immediately if thunder sounds within 30 seconds of a flash (or if hair stands on end). Count the seconds between a lightning flash and its thunderclap: 30 seconds or less means the strike is within 10 kilometers (6 miles) and the next bolt can strike directly overhead. If your hair stands on end, your skin tingles, metal gear hums or crackles (St. Elmo's fire), or rocks buzz, an upward streamer is forming on your body and a strike is seconds away: drop all metal gear immediately, sprint or scramble 30 to 60 meters (100 to 200 feet) down off the crest if you have 15 seconds, and drop into the Lightning Position on your insulating foam pad or pack.
- Ditch metal-framed packs, aluminum trekking poles, ice axes, climbing racks, and fishing rods at least 30 meters (100 feet) away. While small amounts of metal do not "attract" lightning from kilometers away, long vertical conductors (trekking poles, ice axes, graphite/carbon fishing rods, antennas, and external pack frames) concentrate electric fields at their tips to launch upward leaders and cause devastating third-degree contact burns and blast injuries if a strike occurs nearby.
- Spread your group out at least 15 to 30 meters (50 to 100 feet) apart. Ground current (step potential) radiates outward in a lethal circle up to 20 to 30 meters (65 to 100 feet) from a strike point. If four hikers or kayakers huddle shoulder-to-shoulder, a single strike will send all four into simultaneous cardiac or respiratory arrest with nobody left conscious to perform rescue breathing or CPR.
- Never shelter under an isolated tree, inside a shallow rock overhang, or against a vertical cliff face. Shallow caves and overhangs less than 3 meters (10 feet) deep with less than 1.5 meters (5 feet) of head and side clearance act as spark-gaps where lightning arcs directly from the rock roof through your head and chest to the floor. Stay at least 1.5 to 2 meters (5 to 6.5 feet) away from vertical rock walls.
- Adopt the low-footprint "Lightning Crouch" on top of your foam sleeping pad, rope coil, or frameless pack. Squat low on the balls of your feet with your heels touching together, hands over your ears, head tucked toward your knees, and zero other body parts (hands, knees, or elbows) touching the ground. Keeping your heels together and insulated minimizes the voltage difference (step potential) across your legs and creates a short path from one foot to the other rather than through your heart.
- Perform immediate CPR and rescue breathing on strike victims and trigger an SOS. A person struck by lightning does not hold an electrical charge and is 100% safe to touch immediately. Lightning stops the heart and paralyzes the respiratory center in the brainstem; start CPR ƒe dɔwɔwɔ immediately, activate your satellite SOS beacon (Garmin inReach, Zoleo, Apple Emergency SOS, or PLB), and call your local xexlẽdzesi siwo wozãna kpata (911 in the United States and Canada, 112 across the European Union, 999 in the United Kingdom, 000 in Australia).
flowchart TD
A["Thunderstorm builds while on exposed mountain ridge or open water"] --> B{"Are electrostatic signs present? (Hair standing up, buzzing metal, tingling skin)"}
B -->|"Yes (Strike imminent in seconds)"| C["Drop metal poles/axes/rods immediately, scramble 30 m off crest if able, crouch on foam pad/pack with heels together"]
B -->|"No, but flash-to-bang is under 30 seconds (< 10 km / 6 mi)"| D{"What environment are you in?"}
D -->|"Alpine Ridgeline / Above Treeline"| E["Descend leeward side off peak/ridge toward uniform dense forest or broad bowl; separate group by 15 to 30 m (50 to 100 ft)"]
D -->|"Rock Face / Multi-Pitch Climb / Via Ferrata"| F["Unclip from steel cables if tethered Safely; move 1.5 m (5 ft) away from wet cracks/chimneys; tie in with nylon dynamic rope"]
D -->|"Open Water (Kayak, Canoe, Small Boat, SUP)"| G{"Can you reach shore within 5 to 10 minutes?"}
G -->|"Ẽ"| H["Paddle hard to shore, haul craft 30 m (100 ft) inland away from water's edge and tall shoreline trees, crouch in uniform brush"]
G -->|"Ao (Wolée le tsi si le ʋuʋu ɖi me) ."| I["Da tɔƒodetiwo/tɔdziʋuwo ɖe anyigba gbadzaa, ma tɔdziʋuwo ɖe vovo meta 30 (afɔ 100), nɔ anyi alo bɔbɔ nɔ titina ʋua ƒe ʋuƒo dzi le PFD/foam ƒuƒu dzi, nɔ tsi me"]
C --> J{"Ðe dzikedzo ƒo ame aɖea?"}
E --> J
F --> J
H --> J
I --> J
J -->|"Ẽ"| K["Reverse Triage: Wɔ CPR enumake & xɔname gbɔgbɔ didi na amesiwo megbɔa ya o; te Satellite SOS / Ƒo ka na 911/112/999"]
Nukatae agado siwo me goglo o, agakpe siwo le tsia dzi, kple agakpe siwo me tsi le nye mɔ̃ siwo wua ame
Ne tsidzadza si xɔ dzo eye tsikpe le dzadzam le togbɛwo dzi la, todzizɔlawo ƒoa woƒe akɔta ɖe agakpe aɖe ŋu le dzɔdzɔme nu alo wotsoa kpe aɖe si me goglo o te be wòanɔ ƒuƒuie. Le dzikedzo ƒe ahom me la, dzɔdzɔmeŋutete ma wua ame. Dzikedzo sina toa towo ƒe kpewo ƒe gota gome, eye wòƒoa ƒu ɖe do siwo me tsi le, tɔʋuwo, kple dzodoƒe siwo me tsi tona le. Ne elektrikŋusẽ ma ɖo agado si me goglo o alo agado sue aɖe ƒe nuyi gbɔ la, ya si le kpea ƒe dzisasrã kple todzizɔla ƒe ta dome la menaa elektrikŋusẽ mete ŋu nɔa te ɖe enu boo o wu kpe glia si ƒo xlã ʋuƒoa. Bolt la ti kpo to ya ƒe dometsotso (side flash), to wò tagbɔ kple akɔta tẽ yi agadoa ƒe anyigba. Mègabe ɖe agado alo xɔ si le etame gbeɖe o negbe ɖe nàte ŋu anɔ tsitre kple ya si me kɔ si ƒe didime nye meta 1.5 (afɔ 5) ya teti** le wò ŋutilã kple gli ɖesiaɖe dome, eye meta 3 (afɔ 10) ƒe didime le dzisasrãa te hafi.
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Akpa 1: Dzikedzo ƒe abixɔxɔ ƒe mɔnu 5 siwo le megbenyigbawo dzi gɔmesese¶
Only 3% to 5% of wilderness lightning casualties are caused by a direct cloud-to-head lightning bolt. Understanding the other 95% of injury mechanisms explains every survival rule in the backcountry:
| Mechanism of Lightning Injury | Share of Casualties | How the Electrical Current Reaches Your Body | Primary Wilderness Prevention Strategy |
|---|---|---|---|
| 1. Ground Current (Step Potential) | 50% to 55% | Lightning strikes a peak, boulder, or tree and spreads radially across the surface of the ground (especially over wet granite, talus, or saturated soil) for 15 to 30 meters (50 to 100 feet). Because soil and rock resist current more than the human body, if your feet are planted 60 centimeters (2 feet) apart, a massive voltage differential (step voltage) exists between your left foot and right foot, driving current up one leg, through your pelvis and heart, and down the other leg. | Minimize ground contact area; stand or squat on a closed-cell foam sleeping pad or frameless pack; keep your feet and heels pressed tightly together so current enters and exits at the same ankle rather than traversing your torso; never lie flat on the ground. |
| 2. Side Flash (Splash) | 30% va ɖo 35% | Lightning strikes a taller object next to you, such as a lone subalpine pine, a summit cairn, a boulder, or a cliff face, and a portion of the current jumps horizontally through the air (up to 1 to 3 meters / 3 to 10 feet) into your body because your body is a better conductor than the air or tree bark. | Stay at least 3 to 5 meters (10 to 16 feet) away from isolated trees, summit boulders, and trail signs, and at least 1.5 meters (5 feet) away from vertical cliff walls. |
| 3. Contact Injury (Conduction) | 5% to 8% | You are physically touching a long conductive object when it is struck up to hundreds of meters away, such as a steel via ferrata cable, a wire handrail (like the Half Dome cables), a barbed-wire pasture fence, a wet climbing rope in a chimney, an aluminum tent pole, or a boat shroud. | Let go of wire cables, metal ladders, chain railings, and fences immediately; drop aluminum poles and fishing rods. |
| 4. Upward Streamer (Leader) Current | 5% to 8% | As a stepped leader approaches from the cloud, strong positive upward streamers launch from high points on the ground, including a hiker's head or shoulder on an exposed ridge. Even if a neighboring boulder's streamer connects to complete the main bolt, the collapse of the unconnected upward streamer flowing through your body carries hundreds of amperes, enough to cause instant cardiac arrest. | Evacuate high points (summits, ridges, open decks) at the first sign of cumulus vertical development; drop to a crouch if hair stands on end. |
| 5. Direct Strike & Blunt Barotrauma | 3% va ɖo 5% | The main lightning channel connects directly to the victim or their held gear, OR the explosive supersonic shockwave of thunder (barotrauma) at point-blank range ruptures eardrums, contuses lungs, or throws the victim off a cliff or talus slope. | Descend early; cover ears with hands during the lightning crouch; anchor yourself with a nylon rope if crouching on a narrow ledge where a muscle spasm or shockwave could throw you off the mountain. |
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Phase 2: Surviving an alpine ridge, summit, or technical rock climb¶
In high-altitude mountain ranges (such as the Rocky Mountains, Sierra Nevada, European Alps, Andes, or Australian Alps), summer heating builds convective cumulonimbus clouds rapidly between 11:00 AM and 4:00 PM. Backcountry mountaineers call the rule "Summits by Noon, Down by One", meaning you should be turning around and descending from exposed alpine terrain before midday if towering cumulus (cumulus congestus) clouds begin building vertically like cauliflower towers or developing a flat anvil top.
Step-by-step alpine ridgeline escape protocol¶
Step 1: Identify the safest immediate micro-terrain¶
When thunder rumbles or lightning flashes while you are above treeline (in the alpine zone), look around you and rank your descent options:
- Best Option (Subalpine Dense Uniform Forest): Descend below treeline into a dense stand of trees of uniform, shorter height located in a valley, basin, or depression. Avoid the single tallest giant tree in the stand; position yourself evenly spaced among groups of smaller trees.
- Second Best Option (Broad Bowl, Talus Basin, or Leeward Slope 30 to 60 Meters Below the Crest): If treeline is 2 hours below you, you do not have to reach trees to drastically reduce your strike probability. Simply descending 30 to 60 meters (100 to 200 feet) vertically down the slope off the sharp ridge crest or summit pyramid takes you out of the primary upward-streamer zone, because the ridge crest above you acts as a partial Cone of Protection.
- "45-Degree Cone of Protection" gɔmesese: Agakpe alo to kɔkɔ aɖe tsɔa nuto aɖe si me afɔku si le tẽe dzi ɖe kpɔtɔ la ƒua gbe ɖe gota le dzogoe si ade 45-degree tso eƒe ta gbɔ, ne nènɔ adzɔge ʋĩ tso agakpe la ƒe gɔme (ne mede ɖeke o la, meta 1.5 va ɖo 3 / afɔ 5 va ɖo 10 do go tso gli la gbɔ) be ƒo asa na axadzi-klẽ kple kpe-yame ƒe sisi, eye nànɔ meta 10 va ɖo 15 (afɔ 33 va ɖo 50) tso gɔmeɖoanyi si dzi cone la gakpɔtɔ kpɔa wò ta le gbɔ.
========================================================================
THE 45-DEGREE CONE OF PROTECTION AGAINST A ROCK FACE
========================================================================
/| <-- Peak / Tall Cliff (Do NOT stand on top)
/ |
/ | DANGER ZONE: Within 1.5 m (5 ft) of wall (Side Flash)
/ |
/ * | <-- SAFEST ZONE: 2 to 6 m (6.5 to 20 ft) away from base
/_____| of a tall vertical wall (at least 10 m / 33 ft high),
crouching on an insulating pad away from water gullies.
========================================================================
- Deadly Micro-Terrain to Avoid on the Descent:
- Never descend down a wet gully, streambed, couloir, or water-filled crack. Water is a superior conductor to dry granite; lightning current channels directly down wet gullies and rock crevices like a copper wire. Stay on dry ribs or open talus slopes between gullies.
- Never shelter inside an old metal-roofed fire lookout, open-sided lean-to, or ungrounded stone hut. Unless a building has complete enclosed electrical wiring and plumbing or a certified lightning-protection grounding rod system, an open three-sided trail shelter or stone hut transmits current directly through its roof and floor.
Step 2: Execute the "Lightning Crouch" on insulating gear¶
If electrostatic signs appear or strikes are hitting the mountain around you and you must stop moving:
- Throw down dry insulation: Pull out your closed-cell foam sleeping pad (such as a Therm-a-Rest Z Lite), a dry coiled nylon climbing rope, or your backpack (ONLY if it has no internal/external metal frame stays, or after sliding the aluminum stays out) and place it on dry ground. The thicker the dry air/foam layer between the soles of your boots and the wet rock, the higher the electrical breakdown resistance against ground current.
- Squat or sit compactly: Balance on the balls of your feet on top of the pad with your heels and ankles pressed together. If muscle exhaustion makes squatting for 20 minutes impossible, sit tightly on top of a thick folded foam pad and frameless pack with your knees pulled up to your chest and your feet resting together on the pad, never let your feet, hands, or buttocks touch the bare ground off the pad.
- Never lie flat on the ground: Lying prone or supine creates a 1.8-meter (6-foot) electrical bridge across the ground surface, guaranteeing that any ground current passing within 25 meters will travel straight through your heart and brain.
- Protect your senses: Clasp your hands over your ears to prevent tympanic membrane (eardrum) rupture from point-blank thunder shockwaves, and close your eyes to prevent temporary flash blindness (photokeratitis) from intense UV/visible flashes.
Step 3: Special triage for Technical Rock Climbers and Via Ferrata users¶
Being roped up halfway up a 300-meter (1,000-foot) rock wall or clipped into a steel via ferrata cable when a storm hits requires decisive action:
- On a Via Ferrata (Iron Way) or Cable Route (e.g., Half Dome, Dolomites): A continuous steel cable bolted down a mountain ridge is a literal lightning rod that conducts a strike occurring 500 meters away at the summit straight through every climber clipped into the cable. If you can scramble off the cable route onto a broad ledge before the storm hits, unclip from the steel cable, move at least 2 meters (6.5 feet) away from the cable and iron rungs, and anchor yourself to a natural rock horn or non-cable nylon sling so a shockwave cannot knock you off the ledge.
- On a Multi-Pitch Rock Climb: If you cannot rappel to the ground before strikes begin, establish a bombproof belay on the widest dry ledge available (avoiding wet chimneys and dihedral corners where water runs). Do not stand unanchored on a narrow ledge: even a weak ground current causes violent involuntary tetanic muscle contractions that will launch an unanchored climber off the cliff. Tie yourself in short with your dry dynamic nylon climbing rope (dry nylon is an electrical insulator; wet rope conducts current, though less than steel cable), move your metal cam/nut rack 3 meters away to a separate gear anchor if possible, and sit on your pack or coiled dry rope rope tail about 1.5 meters (5 feet) away from the main vertical wall if the ledge permits.
Step 4: Should you stay inside a backpacking tent during a lightning storm?¶
A backpacking tent offers ZERO protection from lightning. In fact, aluminum or carbon-fiber tent poles act as miniature lightning rods on an exposed campsite, and pitched inside a tent, hikers usually lie flat on the floor with their heads and feet inches from the grounded metal pole tips.
- If your tent is pitched in an exposed alpine basin above treeline or on a ridge and a severe lightning storm moves directly overhead, put on your rain gear, grab your foam sleeping pad, exit the tent, move at least 15 meters (50 feet) away from the tent into a low depression, and assume the lightning crouch on your pad.
- If your tent is already pitched properly deep inside a dense, uniform forest below treeline, away from the tallest isolated trees and away from water, the surrounding forest canopy provides far taller upward-streamer paths than your 1.2-meter (4-foot) tent, but you should still sit upright on your foam sleeping pad in the center of the tent floor (away from the metal poles and tent walls) rather than lying flat head-to-pole until the active core passes.
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Phase 3: Surviving lightning on open water (Kayaks, canoes, SUPs, and small boats)¶
Open water is mathematically as dangerous as an alpine summit. Because a lake, bay, or ocean is completely flat, a paddler sitting in a kayak, standing on a stand-up paddleboard (SUP), or sitting in an open aluminum fishing skiff is the single highest vertical protrusion for kilometers around, and their lower body rests inches from a massive conductive sheet of water.
Step 1: The 5-Minute Shore Sprint vs. Open-Water Hunker Decision¶
As soon as you see darkening cumulus clouds, feel a sudden gust front (outflow boundary drop in temperature), or hear distant thunder:
- If shore is within 5 to 10 minutes of hard paddling/motoring: Head straight for the nearest land immediately, even if it is an unplanned beach or private dock. Once you hit shore, do not linger at the water's edge (lightning strikes at the waterline travel along the wet sand and water surface). Haul your boat 30 meters (100 feet) inland, walk past the first tall shoreline trees into lower uniform brush or an enclosed building/vehicle, and crouch on your life jacket (PFD).
- If you are caught more than 10 minutes from shore and lightning is already striking the water: Do not exhaust yourself paddling upright in the middle of an active strike zone. Transition immediately to the Open-Water Survival Protocol.
Step 2: Open-Water Survival Protocol by Vessel Type¶
| Vessel Type | Immediate Lightning Action Protocol | Afɔku Vevi Siwo Wòle Be Woaƒo Asa na Le Tsi Dzi |
|---|---|---|
| Kayak, Tɔdziʋu, alo Tsitrenu-Tɔdziʋu (SUP) | Dze anyi ɖe SUP dzi enumake (dze klo alo mlɔ foam board la dzi; mètsi tre gbeɖe o). Le kayak alo tɔdziʋu me la, mlɔ wò carbon-fiber alo aluminum paddle la gbadzaa ɖe deck/gunwales la dzi (carbon fiber te ŋu tsɔa tsi geɖe; carbon paddle xɔdzo léle ɖe ta dzi le dziɖegbe me nye dzikedzo léle). Kka tɔdziʋu geɖe ɖe wo nɔewo gbɔ meta 30 ya teti ale be amedzidzedze ɖeka nagawɔ ƒuƒoƒo bliboa ƒe ŋutete o. Nɔ anyi alo nàbɔbɔ nɔ anyi ɖe yameʋua ƒe titina alesi nàte ŋui, he PFD si me aŋɔ ƒuƒu le alo akplo ƒuƒu si susɔ ɖe wò afɔ/zikpui te be wòaxe mɔ na ɖokuiwò tso ʋua ƒe ʋua ƒe gɔme si dze ŋgɔ tsia gbɔ, eye nàna wò asiwo kple afɔwo nagage ɖe tsia me kura o. | Mègatsɔ asi alo afɔ ƒo ɖe tsia me gbeɖe o; mègatsɔ kayak-ʋuwo ƒo ƒu ɖekae alé tuɖedziwo ɖe asi gbeɖe o; mègalé carbon paddle ɖe tsitrenu gbeɖe o. |
| Ʋu Aluminium Tɔƒodeʋu, Bass Tɔdziʋu, alo Titina Console | Ðe graphite/carbon tɔƒodetiwo, outriggers, VHF antennas, kple Bimini ga ƒe xɔtunuwo katã ɖe anyi eye nàda wo ɖe ʋua ƒe akpa si le gbadzaa la dzi enumake. Lã trolling motor la eye nàhe sekea yi dzi ne ehiã le tsi si le ʋuʋu ɖi me (alo nàgblẽ sekea ƒe ka ɖi ne ehiã ko be wòagage ɖe kpewo dzi o, evɔ màka asi atizɔti/kɔsɔkɔsɔ si xɔ dzo la ŋu o). Do wò Agbetsiwu (PFD) enumake (ale be nànɔ tsia dzi ŋkume kple ŋkume ne èƒoe wòtsi dzodzodzoe to amedzidzedze me). Mibɔbɔ ɖe tɔdziʋua titina ɖe fiberglass-fafamɔ̃, tɔdziʋu ƒe akɔtaɖonu ƒuƒu, alo agbetsiwui tame, eye nànɔ adzɔge tso ʋua ƒe ʋukukumɔ̃, gasɔa ƒe ka, batri ƒe nugbɔ, kple ga tuwo gbɔ. | Mègalé graphite tɔƒodeti gbeɖe o (graphite kplɔa elektrikŋusẽ enumake); mègatsi tre ɖe bow trolling motor la ŋu gbeɖe o; mègaka asi tɔdziʋua ƒe ga ƒe akpa eve ŋu le ɣeyiɣi ɖeka me gbeɖe o. |
| Cabin Cruiser alo Sailboat si me Mast le | Tɔdziʋu si wotsɔa aluminum wɔe la tsɔa Cone of Protection** si ƒe didime ade 45-degree ƒua gbe ɖe ʋua ƒe ʋuƒoa dzi ne ne wotsɔ ʋuƒoa ɖo anyigba nyuie ɖe keel/tsi la ŋu to heavy-gauge bonding cables dzi (alo jumper ka si wotso kpata ɖe shroud ŋu eye wokplɔe ɖo le tsia me, tsɔ esia kpe ɖe eŋu hafi ahom la nava, gbeɖe le ahom la ƒe ƒoƒo me o). Yi ɖe anyigbaxɔdzoa te yi ɖe xɔa ƒe titina. Te ɖa kura tso mast compression post, kɔsɔkɔsɔwo, stainless steel shrouds/stays, ƒudzi VHF radio nuƒomɔ̃, galley sink faucets, kple engine block gbɔ. | Le tɔdziʋu si wotsɔ anyigba wɔe gɔ̃ hã me la, zi geɖe la, ne woƒo tɔdziʋua ƒe ʋuƒoa tẽ la, eƒoa ƒudzi elektrɔnikmɔ̃ siwo katã ƒe ŋusẽ nye 12V (GPS, VHF, depth sounder) eye ate ŋu aƒo do aɖe to thru-hull fitting si me anyigba mele o me, lé ŋku ɖe bilge la ŋu enumake be tsi dza le ƒoƒo ɖesiaɖe megbe. |
Tsi nyui vs. Tsi dzetsi dzikedzo ƒe dzɔdzɔmeŋusẽŋununya
Lala be nàge ɖe tsia me le nɔnɔme ɖesiaɖe me, eye nàse alesi tsi ƒe dze trɔa anyigba ƒe sisi le tsia dzi gɔme: - Dzetsi (Atsiaƒu / Bays): Dzetsi me yɔ fũ kple ion siwo me wode tsii eye wònye elektrikmɔ̃ si nyo wu wu amegbetɔ ƒe ŋutilã. Ne dzikedzo ƒo atsiaƒua la, elektrikŋusẽ kaka kabakaba le anyigba ƒe akpa si le anyigba dzi eye wòkakana kabakaba le didime kpui aɖe me (anɔ abe meta 10 va ɖo 15 / afɔ 33 va ɖo 50 ene), eye wòdina be yeasi ƒo xlã tsɔ wu be yeato nu si nyrɔ ɖe tsi me le afisi wowó enumake la godo ɖeɖeko. - Tsi nyui (Todzitawo / Tɔsisiwo): Tsi nyuiwo ƒe mineral conductivity le sue ŋutɔ, si wɔe be wò amegbetɔ ƒe ŋutilã (si yɔ fũ kple ʋu si me dze le kple electrolytes) nye conductor nyuitɔ KPƆKPƆ wu ta si ƒo xlãe ƒe tsi. Ne dzikedzo ƒo tsi nyui ƒe ta aɖe la, elektrikŋusẽa zɔa mɔ didi wu le tsia me henɔa mɔ si me tsitretsitsi boo aɖeke mele o dim eye wòsina to tsiƒula alo tsiƒula ɖesiaɖe ƒe ŋutilã me tẽ le meta 30 va ɖo 50 (afɔ 100 va ɖo 165) me, si wɔnɛ be lãmetutudɔa zua lãmetutudɔ enumake eye wònyrɔna. Mègagblẽ kayak alo tɔdziʋu ɖi gbeɖe be nàge ɖe tsia me le dzikedzo ƒe ahom me o. Nɔ ƒuƒuie le ʋua ƒe ʋuƒoa me eye nàbla wò PFD.
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Akpa 4: Dzogbe ƒe atikewɔwɔ ƒe vovototodedeameme le dzikedzo ƒe ƒoƒo vɔ megbe ("Reverse Triage") .¶
Le gbedadaƒo ƒe nuveviwɔame si wozãna ɖaa (abe kpewo ƒe gege alo ahomya si me xɔnametɔ ʋɛ aɖewo koe le ene) me la, atikewɔlawo ƒe susu nɔa amesiwo ŋu wowɔ nuvevii siwo le ɣli dom alo ʋu le dodom ŋu eye wometsɔa amesiwo ŋu wowɔ nuvevii siwo ƒe dzi ƒe tsotso alo gbɔgbɔ aɖeke mele wo ŋu o la ɖoa nɔƒe gbãtɔ. Le dzikedzo ƒe nudzɔdzɔ si me ame gbogbo aɖewo ku le me la, ele be nàwɔ se si tsi tre ɖe eŋu tututu ŋudɔ: REVERSE TRIAGE.
Nusita "Reverse Triage" xɔa amewo ɖe agbe le dzikedzo me¶
- Ne dzikedzo ƒe ame aɖe ƒe susu le nu ŋu, le hũ ɖem, alo le gbɔgbɔm le eɖokui si la, ke wotsi agbe le elektrikŋusẽ ƒe akpa si wua ame enumake la me xoxo. Togbɔ be ate ŋu anye be abi si le veve sem na wo, woƒe towo agbã, alo woƒe afɔwo azu lãmetutudɔ hena ɣeyiɣi aɖe hã la, kakaɖedzitɔe kloe la, woatsi agbe ne wogbɔ agbe wo enumake.
- Ne dzikedzo dze abe "eku" keŋkeŋ ene (gbɔgbɔ mele eme o, ʋu ƒe sisi mele eŋu o, ŋkume ƒe ŋkume ƒe ŋkumeʋuʋu si le teƒe ɖeka eye wòkeke, ŋutigbalẽ si me cyanotic le si me fli le), woate ŋu agbugbɔ wo aɖo agbe bliboe enuenu ne wodze CPR kple xɔname gbɔgbɔ gɔme le sɛkɛnd 60 me.
- Nusita Xɔname Gbɔgbɔ Ɣeyiɣi Didi le vevie ŋutɔ: Dzikedzo naa tsitretsiɖeŋu gã aɖe si dona enumake si tsoa dzitodzito me (DC) si ɖea dzitodzito (dzi ƒe lãmeka) bliboa ɖa zi ɖeka, si wɔa dɔ abe defibrillator gã aɖe ene, eye le ɣeyiɣi ma ke me la, ewɔa nuku na medullary respiratory center si le ahɔhɔ̃meka me. Zi geɖe ŋutɔ la, amesi ŋu wowɔ nuvevii ƒe dzitodzito ƒe dzɔdzɔmeŋusẽdzidzenu (sinoatrial node) gadzea dzi ƒe tsotso gɔme le eɖokui si le sɛkɛnd ʋɛ aɖewo ko me, gake amesi ŋu wowɔ nuvevii ƒe ahɔhɔ̃meka gakpɔtɔ nyea lãmetutudɔ eye mate ŋu aʋã gbɔgbɔ aɖabaƒoƒo 10 va ɖo 30 o. Ne ame aɖeke megbɔ ya na amesi ŋu wowɔ nuvevii o la, woƒe ʋu me oxygen dzi ɖena kpɔtɔna eye woƒe dzi tɔa te zi evelia le hypoxia (secondary hypoxic cardiac arrest), si wua ame.
Afɔɖeɖe ɖesiaɖe ƒe agbetsitsi le gbedadaƒo le amedzidzedze megbe¶
- Dada nukpɔkpɔa ƒe dedienɔnɔ kpɔ eye nàʋuʋu ne ehiã KO: Kaka ame si ŋu wowɔ nuvevii la le dedie 100% enumake. Ne woƒo amesi ŋu wowɔ nuvevii le togbɛ ƒe ta si woɖe ɖe go dzi eye dzikedzo gakpɔtɔ le ƒoƒom vevie le ta dzi la, xɔnametɔ eve ate ŋu ahe amesi ŋu wowɔ nuvevii la kabakaba meta 15 va ɖo 30 (afɔ 50 va ɖo 100) ayi anyime tso togbɛa dzi esime xɔnametɔ bubu le gbɔgbɔm, alo abɔbɔ ɖe anyi esime wòle nutete wɔm.
- Ʋu yaƒoƒomɔ̃a eye nàkpɔe ɖa be gbɔgbɔ kple carotid pulse hã mewu sɛkɛnd 10 o:
- Ne ʋu ƒe sisi aɖeke meli o eye gbɔgbɔ aɖeke mele eme o: Dze egɔme bliboe CPR ƒe dɔwɔwɔ enumake le agbɔsɔsɔ si nye akɔta tete 100 va ɖo 120 le miniti ɖeka me va ɖo goglome si nye sentimeta 5 va ɖo 6 (inch 2 va ɖo 2.4) le ame tsitsiwo me, eye woaɖɔli akɔta 30 va ɖo xɔnamegbɔgbɔ 2. To vovo na dugã me dzidɔ kpata afisi wozãa asi ɖeɖeko ƒe CPR ɣeaɖewoɣi la, xɔnamegbɔgbɔwo nye sedziwɔwɔ le dzikedzo ƒe nutsitsi elabena gbɔgbɔtsixetsixee nye amewula vevitɔ.
- Ne carotid pulse le amesi ŋu wowɔ nuvevii la si gake MELE gbɔgbɔm o: Wɔ Rescue Breathing le agbɔsɔsɔ si nye gbɔgbɔ 1 le sɛkɛnd 5 va ɖo 6 ɖesiaɖe me (gbɔgbɔ 10 va ɖo 12 le miniti ɖeka me), nànɔ akɔta kpɔm wòanɔ dzi yim le gbɔgbɔ ɖesiaɖe me eye nàgbugbɔ alé ŋku ɖe carotid pulse ŋu le miniti 2 ɖesiaɖe me. Yi xɔname gbɔgbɔ dzi hena aɖabaƒoƒo 30 va ɖo 60+ ne ehiã vaseɖe esime ahɔhɔ̃a nahaya eye gbɔgbɔ si dzɔna le eɖokui si nagadze egɔme ake.
- Mègana "Fixed and Dilated Pupils" alo afɔ fafɛwo flu wò o: Dzikedzo hea autonomic nervous system ƒe dɔmawɔmawɔ nyuie vɛ si nana edziedzi be ŋkuvi ɖeka alo evea siaa nɔa te hena ɣeyiɣi aɖe eye wòkekena (si zi geɖe la, efia be ahɔhɔ̃ ƒe ku le nuveviwɔame bubuwo me) eye wòhea keraunoparalysis, si nye ɣeyiɣi kpui aɖe ƒe ʋukawo ƒe ʋuʋu kple ahɔhɔ̃mekawo ƒe ʋuʋu le ete nugbɔ siwo nana amesi ŋu wowɔ nuvevii ƒe afɔwo dzena abe ɖe wole ɣie, vuvɔ le wɔwɔm, wole blɔ, woƒe ʋu ƒe sisi mele wo ŋu o, eye wozu lãmetututɔ keŋkeŋ. Zi geɖe la, keraunoparalysis nu tsona le eɖokui si le gaƒoƒo 2 va ɖo 24 me; mègasusui gbeɖe be amesi ŋu wowɔ nuvevii la ku alo eƒe akɔta si wotso tegbee si wotu ɖe eƒe ŋkume ƒe ŋkumeʋuʋu alo afɔ siwo fa miamiamia siwo tu le dzikedzo ƒe ƒoƒo vɔ megbe dzi o.
- Kpɔe ɖa be aklã ƒe abi, dzobibi, kple dzoxɔxɔ si nu sẽ hã:
- Esi dzikedzo nana lãmekawo tena sesĩe alo tsɔa todzizɔlawo ƒua gbe ɖe kpewo dzi ta la, lé asi ƒe vidzidɔ ƒe akɔta ƒe liƒo me ɖe asi ne amesi ŋu wowɔ nuvevii la dze anyi alo ƒo woƒe ta (kpɔ Abi siwo woxɔna le aklã me).
- Di dzoxɔxɔ ƒe dzobibi siwo gena ɖe eme/do go (zi geɖe la, te ɖe ga zip, alidziblanu ƒe ka, gaƒoɖokui, kɔsɔkɔsɔ ƒe kɔsɔkɔsɔ, alo afɔkpodzi ŋu) kple ŋutigbalẽ ƒe dzesi siwo le dzo dam abe fu ene (Lichtenberg ƒe nɔnɔmetatawo, siwo nye dɔlékui si nye dzikedzo ƒe ƒoƒo eye wofa le gaƒoƒo 24 va ɖo 48 me). Fa awu siwo le dzo dam siwo le dɔ wɔm eye nàtsɔ aŋe ƒuƒu dzadzɛwo atsyɔ dzoxɔxɔ ƒe dzobibi vavãwo dzi (kpɔ Dzobibi).
- Xlã amesi ŋu wowɔ nuvevii la ɖe nu ƒuƒu si wotsɔ xea mɔ na dzoxɔxɔ kple dzoxɔxɔ si nu sẽ ƒe nu xatsa enumake (kpɔ Dzogbe ƒe dzoxɔxɔ si nu sẽ kple vuvɔ). Amesiame si dzikedzo ƒo la bia be woada kɔdzi akpɔ kple ECG si me lifi 12 le eye woado ʋu kpɔ be rhabdomyolysis (lãmekawo ƒe gbagbã) le eme hã.
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Nya siwo wobiaa amewo enuenu¶
Ðe rababa si le nye todzizɔfɔkpa ƒe afɔkpodzi alo mɔ dzi duƒuƒufɔkpawo xea mɔ nam be dzikedzo nagaƒom oa?
Ao, ɖeko dzikedzo aɖe zɔ to yame ƒe ya si xea mɔ na ya si ƒe ŋusẽ nye volt miliɔn 100 va ɖo biliɔn ɖeka si didi kilometa 2 va ɖo 5 (kilometa 1 va ɖo 3) me teti koe nye ema. Rababa ƒoɖi si ƒe didime nye sentimeta 1.5 (inch 0.6) si le todzizɔzɔ ƒe afɔkpa gɔme la nana be woate ŋu atsi tre ɖe anyigba ƒe elektrikŋusẽ si nu sẽ ŋu boo o. Futukpɔ si me lãmenugbagbevi siwo wotu ƒuƒu (abe alɔ̃dɔdɔ ƒe agbalẽvi si woxatsa ene) si wotsɔ ƒo ƒu kple akɔtagbalẽvi ƒuƒu si me xɔtunu mele o eye wò afɔkpodziwo léle ɖe wo nɔewo ŋu nyuie koe ɖea afɔɖeɖe ƒe ŋusẽ si toa wò afɔwo me dzi kpɔtɔna le mɔ si ŋu gɔmesese le nu, abe alesi le ʋu me la, ga Faraday-ka si le ʋua ƒe ŋutilã me (menye rababa tayawo gbeɖe o) ye kpɔa mɔzɔlawo ta ene.
Ne nye asitelefon, GPS gaƒoɖokui, alo Garmin inReach le nye kotoku me la, ɖe wòahe dzikedzo ƒe ƒoƒoa?
Ao, elektrɔnikmɔ̃ suewo, asitelefonwo, gaƒoɖokuiwo, kple atsyɔ̃ɖonuwo "mehea" dzikedzo alo trɔa mɔ si dzi kplɔla si le afɔ tsɔm le ɖiɖim tso kilometa geɖe le yame la to o. Gake ne anyigba ƒe elektrikŋusẽ alo axadzi ƒe keklẽ ƒo wò esime nèdo ga ɖe wò ŋutigbalẽ ƒuƒlu ŋu (abe gaƒoɖokui, kɔgɛ, ka te ƒe akɔtaɖonu, alidziblanu ƒe ka, alo gaku siwo le kotoku me ene) la, ga la doa dzo ŋutɔ enumake eye wònana wòfiãa nu goglo le dzidzenu etɔ̃lia me alo wòtsɔa plastik elektrɔnikmɔ̃wo ƒua gbe ɖe wò ŋutigbalẽ me. Na wò satelait kadodomɔ̃ kple telefon nanɔ wò akplo ƒe kotoku ƒuƒu si me wotsɔ nu ƒo xlãe me (mèzi wò akɔta o) ale be woatsi agbe le ahom la me eye woayi edzi anɔ dɔ wɔm be woaɖo SOS ɖe amewo le esia megbe.
Nyateƒee wònye be dzikedzo medzea teƒe ɖeka zi eve le to dzi gbeɖe oa?
Ema nye nyakpakpa si me afɔku le. Dzikedzo ƒoa anyigba ƒe nɔnɔme ƒe teƒe vevi mawo tututu, agakpewo tame, kple togbɛwo tame zi gbɔ zi geɖe le dziɖegbe ƒe lãmenugbagbevi ɖeka me elabena nɔnɔme mawo naa mɔ kpuitɔ kekeake si ƒe ŋusẽ le agble dzi wu na tɔsisi siwo yia dzi. Mègabe ɖe ati alo kpe gã aɖe si "woƒo ko" la xa gbeɖe ne ètsɔe be ele dedie fifia o.
How long after the last flash of lightning or clap of thunder must I wait before climbing back up onto an exposed ridge or launching my kayak?
Follow the official National Weather Service and Wilderness Medical Society 30/30 Rule: after witnessing the final flash of lightning or hearing the final clap of thunder, wait a full 30 minutes before leaving your lower-elevation shelter to re-ascend an exposed ridge or paddle back out onto open water. Over half of all fatal lightning strikes occur after the heavy rain shaft has passed, because "bolts from the blue" (positive cloud-to-ground strikes originating from the high upper anvil of the storm) routinely leap horizontally 10 to 16 kilometers (6 to 10 miles) behind the trailing edge of a departing thunderstorm into clear blue sky.
What should I do if I am riding a mountain bike or horse when caught in lightning on an open trail?
If riding a mountain bike (especially a carbon-fiber or aluminum frame) on an exposed ridge or open prairie, dismount immediately, lay the bike flat on the ground at least 15 to 30 meters (50 to 100 feet) away from you, and adopt the lightning crouch in a low depression. If riding a horse or leading pack stock, dismount immediately and tie or hobble the animals in a low stand of uniform trees at least 30 meters (100 feet) away from where you crouch. Horses and mules have a long four-legged wheelbase (1.5 to 2 meters / 5 to 6.5 feet between front and rear hooves), making them extraordinarily vulnerable to fatal step-potential ground currents even from distant strikes.
Where can I learn hands-on wilderness CPR and backcountry lightning triage?
Reading a guide is no substitute for muscle memory during an alpine emergency. Take a hands-on CPR and First Aid course from the American Red Cross, St John Ambulance, the Resuscitation Council UK, or a certified Wilderness First Aid (WFA) / Wilderness First Responder (WFR) provider such as NOLS Wilderness Medicine or Wilderness Medical Associates so you can practice prolonged rescue breathing and backcountry patient packaging under realistic conditions.
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Wolé ŋku ɖe dzɔtsoƒewo ŋu¶
- Wilderness Medical Society (WMS) (United States / International): Wilderness Medical Society Clinical Practice Guidelines for the Prevention and Treatment of Lightning Injuries (Davis et al., Wilderness & Environmental Medicine, covering the 5 injury mechanisms, terrain selection, lightning position, reverse triage, and keraunoparalysis).
- National Oceanic and Atmospheric Administration (NOAA) / National Weather Service (NWS) (United States): Backcountry Lightning Risk Reduction Guidelines and Boating Lightning Safety Protocols (30/30 rule, flash-to-bang calculation, and upward streamer warning signs).
- Centers for Disease Control and Prevention (CDC) (United States): Lightning Strike Victim Triage and Medical Management (safety of touching strike victims immediately, cardiac vs. respiratory arrest physiology, and prolonged rescue breathing).
- American Heart Association (AHA) (United States) & European Resuscitation Council (ERC) (European Union): Guidelines for Cardiopulmonary Resuscitation and Emergency Cardiovascular Care: Special Circumstances of Resuscitation (Electrocution and Lightning Strike).
- National Outdoor Leadership School (NOLS) Wilderness Medicine (United States): Backcountry Lightning Protocol (group separation distances of 15 to 30 meters, foam pad insulation, tent precautions, and 45-degree cone of protection caveats).
- United States Coast Guard (USCG) & BoatUS Foundation (United States): Open-Water Small Craft and Sailboat Lightning Protection and Survival Procedures.
- British Mountaineering Council (BMC) (United Kingdom) & Alpine Club of Canada (ACC) (Canada): Alpine Ridges, Via Ferrata, and Technical Climbing Lightning Evacuation Guidance.
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