Severe Sandstorms, Desert Windstorms, and Zero-Visibility Shelter¶

Severe sandstorms and synoptic desert windstorms, known regionally across the world's arid zones as the Simoom ("Poison Wind"), Khamsin, Shamal, Harmattan, Ghibli, Sirocco, and Karaburan ("Black Hurricane"), combine hurricane-force winds of 70 to 120+ kilometers per hour (45 to 75+ miles per hour) with a blinding, abrasive wall of bouncing quartz sand grains (saltation) and suspended fine mineral dust that drops visibility to zero for hours or days at a time. Unlike brief thunderstorm downdraft dust clouds (covered in our dust storms a haboob survival guides), a synoptic desert sandstorm or Simoom thermal blast can raise ambient air temperatures to \(48^\circ\text{C}\) to \(54^\circ\text{C}\) (\(118^\circ\text{F}\) to \(129^\circ\text{F}\)) while dropping relative humidity below 5 to 10 percent, stripping 1.5 to 2.5 liters (1.5 to 2.6 quarts) of water per hour out of the human body and triggering fatal heatstroke and respiratory suffocation within 60 to 120 minutes.

According to the World Meteorological Organization (WMO) Sand and Dust Storm Warning Advisory and Assessment System (SDS-WAS), the United States National Weather Service (NWS), and military desert survival doctrine, desert sandstorms kill via four distinct mechanisms: high-speed highway chain-reaction collisions when drivers enter a zero-visibility sand drift, rapid hyperthermic heatstroke during hot Simoom / Khamsin gusts, acute airway choking and Coccidioides ("Valley Fever") or bacterial meningitis infection from inhaling concentrated dust, and fatal disorientation when hikers or motorists wander away from their vehicle or shelter during a multi-hour blackout.

Gwnewch hyn nawr¶

1. If driving when a sandstorm wall approaches: Pull completely OFF the highway pavement (>15 to 30 meters / 50 to 100 feet onto firm ground), set the parking brake, TURN ALL EXTERIOR LIGHTS OFF, and take your foot off the brake pedal. Execute the official NWS / Arizona DOT "Pull Aside, Stay Alive" protocol: never stop in an active travel lane, and never sit parked on the roadside shoulder with your taillights, hazard flashers, or brake lights glowing. Blinded drivers behind you will steer straight toward your glowing lights thinking you are moving in the traffic lane (the Moth Effect) and slam into the back of your parked car at highway speed.
2. Protect your airway and eyes within 30 seconds: Put on an N95 / FFP2 respirator (or wrap a damp keffiyeh / cotton scarf in 4 layers over your nose and mouth) and sealed non-vented goggles. Coarse quartz sand travels in the bottom 1 to 2 meters (3 to 6.5 feet) above the desert floor, blasting exposed skin and corneas like a commercial sandblaster, while fine silt (\(PM_{10}\) and \(PM_{2.5}\)) packs the nostrils and bronchioles. Moisten your breathing cloth with a small splash of drinking water if available: a damp cloth cools incoming \(50^\circ\text{C}\) (\(122^\circ\text{F}\)) Simoom air before it scorches your throat and traps 5 times more fine dust than dry fabric, while reducing respiratory moisture loss.
3. If caught on foot in open desert without a vehicle or building: Climb to the leeward (downwind) side of a solid rock outcrop, boulder, or high mound, NEVER shelter in a dry riverbed (wadi / arroyo) or under the steep slip-face of an active sand dune. Dry desert stream beds (wadis, washes, arroyos) can fill simultaneously with drifted sand and sudden uphill fflachlifoedd, while the steep leeward slip-face (\(34\text{-degree}\) angle of repose) of a large sand dune can avalanche and bury a sleeping or crouching person under tons of sand in minutes. Sit or lie down with your back to the wind on firm, elevated stony ground, wrap your head and body tightly in a tarp, blanket, or coat, and shake yourself free of accumulating sand every 10 to 15 minutes so you are not buried.
4. Prevent "Convective Oven Heatstroke" during a scorching Simoom or Khamsin wind. Once the air temperature exceeds normal human body temperature (\(37^\circ\text{C}\) [\(98.6^\circ\text{F}\)]), and during a Simoom it reaches \(50^\circ\text{C}+\) (\(122^\circ\text{F}+\)), the wind no longer cools you down; instead, exposed wind acts like a convection oven, pumping heat into your skin while evaporating sweat faster than your body can produce it. Cover 100 percent of your skin with loose, full-length clothing (never strip down to shorts or a T-shirt in a hot desert wind, which accelerates dehydration and skin burns by 50 percent), and drink 0.5 to 1.0 liter (16 to 32 ounces) of water with electrolytes per hour.
5. Group companions and animals together using a physical rope tether and mark your position before visibility hits zero. If traveling with family, a work crew, or pack animals on foot, tie everyone together with a continuous cord or belt-to-belt loop before the sand wall engulfs you. Never let a child or coworker let go of your hand or tether inside a sandstorm.
6. Protect your vehicle engine and radiator after the storm before restarting. Driven sand packs tightly inside engine air filter boxes, radiator cooling fins, and alternator bearings, while shifting sand drifts bury exhaust pipes and differentials. Before driving out after a severe sandstorm, open the hood and knock the accumulated sand cake out of the pleated paper engine air filter, clear sand away from the radiator and exhaust manifold (packed desert weeds and brush blown against a hot catalytic converter ignite instant vehicle fires), and deflate tire pressure to 100 to 125 kilopascals (15 to 18 PSI) if you must drive out through newly drifted soft sand.

Desert sandstorm and zero-visibility survival decision flowchart¶

Use this field survival decision tree whether you are behind the wheel on a desert highway, caught on foot in open terrain, or sheltering inside a desert structure.

flowchart TD
    Start["Severe Sandstorm / Desert Windstorm Approaching:<br/>Simoom, Khamsin, Shamal, Haboob, or Karaburan"] --> LocationType{"Where are you located<br/>as the sand wall hits?"}

    LocationType -->|"1. DRIVING A VEHICLE ON A ROAD OR TRACK"| VehicleAction{"Can you exit the highway to a<br/>building before it hits?"}

    VehicleAction -->|"NO: Caught on Open Road"| PullAside["'PULL ASIDE, STAY ALIVE' PROTOCOL:<br/>1. Steer completely OFF pavement (>= 15 to 30 m / 50 to 100 ft right)<br/>2. Shift to Park, set Parking Brake, & take foot OFF brake pedal<br/>3. TURN ALL EXTERIOR LIGHTS OFF (headlights, brakes, & hazards)<br/>4. Close windows, set A/C to RECIRCULATE, & stay buckled inside<br/>5. If hot Simoom stalls A/C: Drape wet cloth over head & drink water"]

    VehicleAction -->|"YES: Safe Parking Lot / Building Ahead"| ExitSafe["Gadewch y ffordd ar unwaith, parciwch yn wynebu I FFWRDD rhag y gwynt<br/>(yn amddiffyn y sgrin wynt a rheiddiadur rhag sgwrio â thywod), a mynd i mewn"]

    LocationType -->|"2. WEDI'I DAL AR TROED MEWN ANialwch AGORED"| FootAction["AROLWG TRAED TIR AGORED:<br/>1. Gwisgwch Gogls wedi'u Selio + Sgarff Keffiyeh N95 / 4 Haen llaith<br/>2. Gorchuddiwch 100% o groen noeth gyda dillad llac (blociau gwynt popty 50 C)<br/>3. Symudwch i dir caregog UCHEL y tu ôl i graig solet neu gefnen<br/>4. PEIDIWCH BYTH â chysgodi mewn gwely afon sych (wadi/golchi) neu wyneb llithriad twyni serth<br/>5. Eisteddwch gyda chefn at y gwynt, tennyn grŵp gyda rhaff, ac ysgwyd y tywod bob 10 munud"]

    LocationType -->|"3. Y TU MEWN I ADEILAD NEU WERSYLL ANialwch"| IndoorAction["PROTOCOL LLOCHES DAN DO / PABELL:<br/>1. Seliwch ffenestri, drysau ac fentiau gyda thywelion gwlyb neu dâp dwythell<br/>2. Diffodd Oeryddion Cors aer y tu allan (mae oeryddion anweddol yn pwmpio llwch y tu mewn)<br/>3. Os mewn pabell yn ystod tymhestloedd >80 km/h: Llewygwch bolion y babell yn wastad yn bwrpasol<br/> a lapiwch y tu mewn i'r cynfas angori fel nad yw'r gwynt yn ei rwygo"]

Cymharu'r 6 storm wynt fawr yn yr anialwch byd-eang a stormydd tywod¶

Mae meteorolegwyr yn dosbarthu digwyddiadau gwynt a thywod anialwch mawr yn ôl eu sbardun tywydd synoptig, maint gronynnau, a pherygl thermol. Mae gwybod a ydych yn wynebu is-ddrafft oer Haboob neu \(52^\circ\text{C}\) Simoom / Khamsin yn penderfynu sut i reoli tymheredd y corff.

Plymio dwfn 1: Ffiseg fertigol storm dywod (Pam sefyll i fyny yn erbyn cwrcwd yn newid yr hyn sy'n eich taro)¶

Mae deall sut mae gwynt yn cludo gwaddod anialwch yn ôl maint grawn yn esbonio sut i amddiffyn eich corff, eich llygaid, a'ch cerbyd: 1. Y Gwaelod 0 i 1.5 Metr (0 i 5 Traed) Yw'r "Parth Sgwrio â Tywod" (Haleniant a Chrepyn): - Gwir grawn tywod cwarts (\(0.06\text{ i }2.0\text{ milimetrau}\) mewn diamedr) yn rhy drwm i arnofio yn uchel yn yr awyr fel mwg. Yn lle hynny, mae dirwyn uwchlaw \(35\testun{ i }45\text{ km/h}\) (\(22\text{ i }28\text{ mph}\)) yn codi grawn tywod i fyny i daflwybr sboncio, balistig o'r enw saltation o fewn y gwaelod \(0.5\testun{ i }1.5\testun{\}\) (testun{.5} uwchben y ddaear{$1.5}) uwchben y ddaear. - Bob tro mae grawn cwarts bownsio yn clepian yn ôl i lawr yr anialwch ar \(60\text{ km/h}\), mae'n taflu sblash o ronynnau tywod eraill a sglodion oddi ar ddarnau microsgopig o silt a llwch clai (\(<60\text{ micrometers}\)). - Goblygiad Tactegol: Mae bron i 90 y cant o'r màs tywod bras, trwm sy'n torri'r croen ac yn taro'r gornbilen yn symud o fewn 1 metr (3.3 troedfedd) i'r ddaear. Os gallwch ddringo 2 i 3 metr (6.5 i 10 troedfedd) i frigiad craig mawr, to lori gwely gwastad, neu ail lawr adeilad, byddwch yn dianc ar unwaith o'r haen sgwrio â thywod garw trymaf (er eich bod yn dal i gael eich trochi yn y cwmwl llwch crog mân sy'n codi \(1,000\testun{ i }3,000\testun{} metrau). I'r gwrthwyneb, os nad oes craig uchel i'w dringo a rhaid i chi eistedd ar y ddaear i osgoi cael eich chwythu drosodd, **rydych yn eistedd yn union y tu mewn i'r parth halltu mwyaf a RHAID lapio 100 y cant o'ch pen, llygaid a chorff y tu mewn i darp, cot neu flanced trwm gyda'ch cefn yn wynebu'r gwynt**. 2. **Taliadau Trydan Statig Triboelectrig (\)10,000+ \text{ Volts}\()**: - Pan fydd biliynau o ronynnau tywod a llwch cwarts yn rhwbio yn erbyn ei gilydd mewn aer sych (\)<10\%$ lleithder), mae ffrithiant yn stripio electronau rhwng grawn mawr a bach (** gwefru triboelectrig**), gan greu meysydd trydanol atmosfferig anferth sy'n fwy na \(10\testun{ i }100\testun{ cilofoltau fesul metr}\). - Beth Mae Hyn yn Ei Wneud yn y Maes: Mae ffensys gwifrau heb eu seilio, antenâu radio metel, rotorau hofrennydd, a cheir wedi'u hinswleiddio yn eistedd ar deiars rwber yn cronni taliadau sefydlog peryglus a all achosi siociau trydanol poenus, tanio anweddau tanwydd os ceisiwch arllwys gasoline o jerrycan yn ystod storm dywod, a gwagio cyfathrebiadau radio statig HF/VHF yn llwyr â "sŵn dyddodiad". Peidiwch byth ag ail-lenwi cerbyd â chan nwy yn ystod storm dywod actif, a chyffyrddwch ag offeryn i'r llawr/siasi cyn cyffwrdd ag antenâu metel noeth.

Plymio dwfn 2: Goroesi'r "Simoom" a "Khamsin" (ffiseg popty darfudol 50 ° C +)¶

Roedd adroddiadau hanesyddol o anialwch y Sahara ac Arabia yn aml yn disgrifio teithwyr yn marw mewn Simoom fel petaen nhw wedi'u gwenwyno gan nwy. Profodd ffisioleg fodern a meddygaeth anialwch (a astudir yn helaeth gan Sefydliad Ymchwil Meddygaeth Amgylcheddol Byddin yr UD [USARIEM] a ffisiolegwyr clinigol Israel/Arabaidd) mai "gwenwyn" y Simoom yw hyperthermia darfudol sy'n rhedeg i ffwrdd ynghyd â disychiad llwybr anadlu acíwt:

Sut i Atal Dysodiad Llwybr Awyru a Phlygio Mwcws mewn Storm Dywod Poeth¶

Pan fyddwch yn anadlu \(50^\circ\text{C}\) (\(122^\circ\text{F}\)) aer ar \(5\%\) lleithder cymharol wedi'i lenwi â llwch mwynol mân drwy geg heb ei gorchuddio: 1. Mae'r aer poeth, sych gydag esgyrn yn syth yn anweddu leinin mwcws hylif amddiffynnol eich tafod, y pharyncs, y tracea, a'r bronciolynnau. 2. Mae clai mân a llwch silt yn cymysgu â’ch poer sychu a’ch mwcws bronciol i ffurfio past mwd trwchus, tebyg i sment yng nghefn eich gwddf a’ch trwyn, gan achosi tagu treisgar a mygu (yn hanesyddol lladdwr rhif 1 milwyr a da byw heb eu cuddio yn y Karaburan a Simoom). 3. Yr Ateb: - Anadlwch trwy'ch NOSE bob amser ** (byth yn pylu â cheg agored) tra y tu mewn i ** lapio pen cotwm llaith 4-haen (keffiyeh / shemagh / bandana) neu fwgwd N95. - Gwlychwch y brethyn dros eich ceg a’ch trwyn ymlaen llaw â dŵr (neu mewn argyfwng goroesi enbyd gyda dim dŵr yfed ar ôl, gwlychwch y tu allan i’r brethyn anadlu gydag unrhyw hylif diwenwyn neu hyd yn oed wrin, felly mae oeri anweddol yn oeri ac yn lleithio’r aer sy’n dod i mewn cyn iddo daro’ch ysgyfaint, *byth yfed * wrin, sy’n gwaethygu’r defnydd o fethiant yr aren/breuddwyd hwyr, sy’n gwaethygu’r defnydd o anadliad hwyr, gornwch yr arennau. o anweddiad yn ddiogel). - Cymerwch ychydig bach o ddŵr bob 10 i 15 munud i gadw'r mwcosa gwddf yn wlyb fel y gall eich cilia llwybr anadlu glirio llwch i fyny.

Plymio dwfn 3: Goroesiad mecanyddol cerbyd a hunan-echdynnu ar ôl y storm mewn tywod dwfn¶

Mae storm dywod ddifrifol yn ymosod ar gerbydau modur yn ystod y storm ac yn syth wedyn pan fydd gyrwyr yn ceisio tynnu allan o dywod wedi'i ddrifftio:

1. Park Facing AWAY from the Wind (Tail into the Wind):
2. If you have time to position your car or truck off the road before a \(100\text{ km/h}\) sandstorm hits, point the rear trunk/tailgate of the vehicle into the wind so the front grill and windshield face downwind.
3. Quartz sand striking at \(100\text{ km/h}\) pits the front glass windshield until it looks like frosted bathroom glass (making it impossible to see through when the sun glares on it afterward), strips paint off the hood, and packs solid into the front radiator grille and A/C condenser fins.
4. Prevent Engine Hydro-Lock / Dust-Lock ("Dusting the Engine"):
5. During a prolonged sandstorm, fine silt gets sucked into the engine air intake box and cakes onto the pleated paper engine air filter until the filter is 100 percent clogged (starving the engine of air) or the paper filter collapses inward under vacuum and dumps raw quartz sand straight into the turbocharger and cylinders, destroying the engine in minutes.
6. Avoid idling your engine unnecessarily for hours during the peak of a thick sandstorm unless cabin heat/cooling is required to prevent life-threatening heatstroke or hypothermia. If you must run the engine for A/C in \(50^\circ\text{C}\) heat, step out cautiously on the leeward side every 45 minutes (tethered to the door handle) to check that sand has not drifted up to seal the undercarriage or clog the radiator intake, and tap the engine air filter clean once the storm subsides.
7. How to Drive Out of Drifted Sand After the Storm Without Digging Yourself to the Axles:
8. During a 3-hour sandstorm, wind carves aerodynamic eddies around your parked tires and deposits \(30\text{ to }60\text{ centimeters}\) (\(1\text{ to }2\text{ feet}\)) of loose, soft windblown sand against your wheels and under your chassis.
9. Never step on the gas pedal and spin your tires at normal highway tire pressure (\(220\text{ to }250\text{ kPa}\) [\(32\text{ to }36\text{ PSI}\)]): spinning high-pressure tires act like circular saws that dig straight down in 3 seconds until the metal belly pan of your car rests high-centered on top of the sand.
10. The 4-Step Desert Sand Extraction Procedure:
    1. Dig first: Clear the drifted sand from in front of and behind all four tires, and scoop out any sand packed under the vehicle's differential and frame belly.
    2. Air down all four tires to \(100\text{ to }125\text{ kilopascals}\) (\(15\text{ to }18\text{ PSI}\)): Deflating your tires elongates the tire footprint (contact patch length) by 50 to 100 percent, allowing the rubber to float on top of soft sand like a snowshoe instead of sinking in. (Drive slowly, under \(40\text{ km/h}\) [\(25\text{ mph}\)] without sharp turns, until you reach pavement and can re-inflate).
    3. Use traction boards, car floor mats, or brush: Wedge rubber vehicle floor mats, sand ladders, flat rocks, or desert brush directly under the front lip of the drive tires.
    4. Turn OFF Electronic Traction Control (TCS): Standard traction control cuts engine power the instant a wheel slips in sand, stalling your momentum; switch to 4WD High/Low (or turn off TCS in 2WD) and apply gentle, steady throttle without spinning the wheels.

Post-sandstorm medical watch: Valley Fever (Coccidioides) and corneal abrasions¶

Even after you survive the immediate sandstorm, watch for two delayed medical conditions over the following 1 to 3 weeks:

• Corneal Sand Foreign Bodies: If your eyes feel gritty, painful, or light-sensitive after the storm, do not rub them. Pull the upper eyelid gently over the lower lashes while flushing continuously with sterile saline eyewash or clean bottled water for 15 minutes; if pain or blurred vision persists, have a doctor inspect the cornea with fluorescein dye for embedded quartz grains; see eye injuries first aid.
• Coccidioidomycosis ("Valley Fever") in the Americas: Across the southwestern United States (Arizona, California's Central/Coachella/Antelope Valleys, Nevada, New Mexico, Utah, Texas) and northern/central Mexico, desert soil harbors the microscopic fungus Coccidioides immitis / Coccidioides posadasii. Inhaling a single airborne fungal spore during a sandstorm can cause Valley Fever 1 to 3 weeks later (persistent cough, fever, drenching night sweats, extreme fatigue, chest pain, and red nodules on the shins called erythema nodosum). Tell your physician explicitly that you were caught in a desert sandstorm so they test for fungal antibodies rather than misdiagnosing it as bacterial pneumonia.
• Meningococcal Meningitis in the African Harmattan Belt: In West and Sub-Saharan Africa, dry Harmattan dust storms damage upper airway mucosal barriers and trigger outbreaks of bacterial meningitis; seek immediate hospital care for any sudden high fever, severe headache, and stiff neck.

Cwestiynau cyffredin¶

Why was the desert "Simoom" wind historically called the "Poison Wind," and can it really kill you in an hour?¶

The word Simoom comes from the Arabic root samūm, meaning "poison wind," because travelers caught in it often collapsed and died rapidly with purple-flushed skin and no external injuries, leading ancient observers to believe the wind contained a toxic gas. Modern desert physiology proved that the Simoom contains no chemical poison at all; rather, it is a blast of air heated to $48^\circ\text{C}$ to $54^\circ\text{C}$ ($118^\circ\text{F}$ to $129^\circ\text{F}$) with less than 5 percent humidity. Because the air is up to $17^\circ\text{C}$ ($30^\circ\text{F}$) hotter than normal human body temperature ($37^\circ\text{C}$ [$98.6^\circ\text{F}$]), the howling wind acts like a convection oven that pumps heat rapidly into any uncovered skin while evaporating up to 2 liters of sweat per hour, triggering fatal heatstroke and airway desiccation in under 60 to 90 minutes unless 100 percent of your skin and airways are covered.

Why is it safer to wear full long sleeves, long pants, and a head wrap in a \(48^\circ\text{C}\) (\(118^\circ\text{F}\)) desert sandstorm than shorts and a T-shirt?¶

In mild summer weather below $35^\circ\text{C}$ ($95^\circ\text{F}$), bare skin helps cool your body because the surrounding air is cooler than your skin. However, once desert air temperatures exceed $37^\circ\text{C}$ ($98.6^\circ\text{F}$) during a hot sandstorm, bare skin absorbs massive radiant heat from the sun and convective heat directly from the hot wind, while dry gusts evaporate sweat off bare skin so fast that it vaporizes in the air before cooling your blood. Wearing loose, full-length clothing and a head wrap creates a shaded insulating layer of $37^\circ\text{C}$ air next to your skin, blocks $50^\circ\text{C}$ wind heat gain, prevents quartz sandblasting burns, and reduces your hourly water loss by up to 40 to 50 percent.

Why must you never take shelter inside a dry desert riverbed (wadi, wash, or arroyo) or at the steep base of a sand dune during a sandstorm?¶

Dry desert riverbeds (wadis or washes) and the steep leeward side (slip-face) of active sand dunes are natural terrain traps during a windstorm. First, blowing sand funnels down low-lying wadis and accumulates in deep drifts against the banks, while a thunderstorm triggering the sandstorm 20 kilometers away in the mountains can simultaneously send a sudden wall of flash-flood water down that exact same dry wash. Second, the downwind slip-face of a large sand dune sits at the critical 34-degree angle of repose; as a sandstorm piles tons of new sand onto the dune crest, the entire slope can shear and avalanche silently onto anyone sheltering at its base, burying them alive. Always shelter on firm, elevated stony ground on the leeward side of a solid rock outcrop or vehicle.

How does letting air out of your tires (airing down to 15 PSI) get a stuck car out of drifted desert sand?¶

At normal highway tire pressure (32 to 36 PSI / 220 to 250 kPa), a car tire is rigid and narrow, concentrating the vehicle's entire weight onto a small footprint the size of your palm so the spinning tire cuts straight down into loose sand like a pizza cutter. Deflating all four tires down to 15 to 18 PSI (100 to 125 kPa) allows the rubber sidewalls to flex and lengthen the bottom of the tire along the ground, doubling the surface area of the tire's footprint. Notice that widening the footprint does not make the tire much wider side-to-side; instead, it makes the tire footprint twice as long front-to-back like a tank tread or snowshoe, reducing ground pressure by half so the vehicle rolls up onto top of the sand.

Ffynonellau wedi'u gwirio¶

• World Meteorological Organization (WMO): Sand and Dust Storm Warning Advisory and Assessment System (SDS-WAS) Compendium on Science and Technology for Sand and Dust Storms (Simoom, Khamsin, Shamal, Harmattan, and Karaburan Classifications).
• National Weather Service (NWS / NOAA, United States) and Arizona Department of Transportation (ADOT): "Pull Aside, Stay Alive" Highway Sand/Dust Storm Survival Campaign and Blowing Dust Warning Protocols.
• United States Department of the Army / US Air Force: FM 3-05.70 (FM 21-76) Survival Manual, Chapter 13: Desert Survival, Convective Thermal Balance in Hot Desert Winds, and Environmental Hazards.
• United States Army Research Institute of Environmental Medicine (USARIEM): Physiology of Heat Balance and Sweat Evaporation Limits in Extreme Arid Environments (\(>45^\circ\text{C}\) Ambient Air).
• Centers for Disease Control and Prevention (CDC, United States) and World Health Organization (WHO): Coccidioidomycosis (Valley Fever) After Dust/Sand Storms and Meningococcal Meningitis Prevention in the Harmattan Belt.

Canllawiau cysylltiedig¶

• Dust storms: highway safety and respiratory protection
• Haboobs and severe thunderstorm dust walls
• Extreme heat and heatwave survival
• Heat illness: heat exhaustion and heatstroke first aid
• Lost outdoors: desert and wilderness survival