Tag: weather

143 words tagged " weather"

aerial plankton

The ocean of tiny organisms — ballooning spiders, wind-borne larvae, pollen grains, fungal spores — drifting through the atmosphere above the land. A living suspension, invisible from below, carried by thermals and trade winds to altitudes of thousands of feet.

The scent of rain hitting warm earth. The smell that rises from dry ground in the first moments of a downpour — mineral, vegetal, alive.

The sparkle of morning sunlight through hoar-frost on leaves and grasses. A word for a phenomenon that lasts only minutes — the moment when frozen dew catches the first light before it melts.

A wind that flows uphill during the day, caused by solar heating of a mountain slope. As the slope warms, the air in contact with it becomes lighter than the surrounding air and rises. The gentlest and most ordinary of mountain winds — a daily breathing of the valleys.

anticyclonic gloom

The persistent gray overcast and poor visibility that can settle over a region during a high-pressure system in winter — the opposite of the clear skies high pressure usually brings. Trapped cold air, low sun, and temperature inversions combine to produce days of featureless murk. The name captures the irony: the anticyclone is supposed to mean fair weather, but in winter it can mean the gloomiest skies of all.

The direction a slope faces — and therefore the amount of sun, heat, and moisture it receives. A south-facing slope in the northern hemisphere gets hammered by sun; its north-facing neighbor stays cool and damp. The two sides of the same canyon can carry entirely different plant communities, hold snow for different durations, and feel like different climates. Aspect is the reason the world changes when you walk around a hill. The word is plain but the concept is foundational — you can't read a landscape without it.

A rough, wave-like cloud formation with an undulating underside that looks like a turbulent sea viewed from below. The newest officially named cloud type, recognized in 2017. Coined by Gavin Pretor-Pinney of the Cloud Appreciation Society. The sky looking like the ocean.

atmospheric river

A long, narrow corridor of concentrated moisture in the atmosphere, hundreds of miles wide and thousands of miles long, carrying water vapor from the tropics to higher latitudes. When an atmospheric river makes landfall, it can deliver catastrophic rainfall — or the snowfall that fills a season's reservoirs.

Curtains, arcs, and ribbons of colored light that appear in the night sky at high latitudes, caused by charged particles from the sun striking the earth's upper atmosphere and exciting gas molecules into luminescence. The aurora borealis (northern lights) and aurora australis (southern lights) are the same phenomenon, mirrored at opposite poles. The colors depend on altitude and gas: green from oxygen at 60 to 150 miles, red from oxygen above 150 miles, blue and purple from nitrogen. An aurora is the planet's atmosphere responding visibly to the sun's breath — the magnetic field channeling the solar wind into the sky and making it glow.

A wind shifting counterclockwise — west to south, north to west. In the northern hemisphere, a backing wind warns of approaching foul weather or an incoming cold front. The opposite of veering.

A cloud that streams from only one side of a mountain summit, like a flag. Formed not by moisture carried over the peak but by air drawn up the lee side into lower pressure. Everest has one. Flat ridges do not.

A system for estimating wind speed based on observed conditions at sea and on land, ranging from Force 0 (calm — smoke rises vertically) to Force 12 (hurricane — devastating damage). Each level is defined not by instruments but by what you can see and feel — a profoundly human measurement system.

A seasonal hot, dry wind that blows from the high interior plateau of southern Africa down to the coast, mainly in winter. It can raise coastal temperatures dramatically and is the South African equivalent of a foehn.

Drifting, blinding snow — a blizzard so thick you cannot see your own footsteps behind you. The world dissolves into white, and direction becomes a matter of faith.

A cold, intermittent gleam — a glint of faint light, as from sun on ice or water seen through cloud. Not steady illumination but a flicker, a signal from the landscape.

An area of forest where trees have been knocked flat by wind — a catastrophic windthrow event, sometimes affecting thousands of acres. A blowdown turns a vertical forest horizontal in minutes. The fallen trunks lie parallel, all pointing the same direction, recording the wind's path like compass needles.

A shallow, bowl-shaped depression excavated by wind in an area of loose sand or soil — most commonly in dunes, beaches, or overgrazed rangeland where vegetation has been removed and the surface exposed to deflation. The wind scoops out the center, and the excavated material accumulates on the downwind side as a crescent-shaped deposit. Blowouts are scars — they mark places where the surface was broken and the wind found its way in.

A day of perfect weather — cloudless sky, calm wind, clean visibility. The kind of day that makes you abandon whatever you were planning to do indoors.

A cold, dry, fierce wind that blows from the northeast down the Dinaric Alps to the Adriatic coast, mainly in winter. It arrives in violent gusts and can sustain gale force for days, making the eastern Adriatic one of the windiest coastlines in Europe.

Of or relating to the north — specifically, the vast belt of coniferous forest (taiga) that circles the Northern Hemisphere below the Arctic tundra, from Alaska through Canada, Scandinavia, and Siberia. The boreal forest is the largest land biome on earth. The word carries cold, distance, and the smell of spruce.

The cold north wind. In Greek mythology, Boreas was the god of winter and the north wind, depicted as a powerful, bearded old man with wild hair. His wind brought frost.

The moment in spring when river ice fractures, shifts, and begins to move downstream — a violent, dramatic event in northern latitudes where rivers freeze solid for months. The ice groans, cracks, and eventually releases in a grinding, building surge of broken plates and slabs that can flood riverbanks and reshape channels. In Alaska and northern Canada, the date of breakup is one of the most anticipated events of the year.

A blizzard-force wind that blows across the steppes of Russia and Central Asia, driving snow horizontally and reducing visibility to near zero. In summer, the same wind carries dust instead of snow. On the tundra, it is called purga.

A persistent, strong, dry southeasterly wind that blows on the South African coast from spring through late summer. It is credited with clearing pollution and bringing fresh air to Cape Town — hence "the Doctor."

A light, localized ruffle on an otherwise calm water surface, caused by a brief puff of wind. Visible from a distance as a dark patch on the water. Sailors watch for cat's paws because they show where the wind is arriving — and from what direction — before you can feel it.

A thin, hard layer of snow compacted by wind — so dense that a ski pole cannot penetrate it. The wind has blown away the loose surface and compressed what remains into something closer to stone than snow.

Snow hardened by strong wind to the point that reindeer cannot forage through it for food. A word that names a crisis — when the snow becomes impenetrable, the animals cannot eat.

A warm, dry wind that descends the eastern slopes of the Rocky Mountains, most commonly in winter and early spring. Its arrival is sudden and dramatic — temperatures can rise 30 or 40 degrees Fahrenheit in hours, and snow that took weeks to accumulate can vanish in a day. Called "the snow eater."

A violent squall with thunder and lightning, especially off the Pacific coast of Central America and Mexico. Chubascos arrive suddenly, turn the sea white, and pass just as fast — leaving the air washed clean and the ocean unsettled.

Parallel rows of cumulus clouds aligned with the wind, marking alternating bands of rising warm air and sinking cool air. The spacing between streets is usually two to three times the cloud height. The atmosphere organizing itself into lanes.

A condensation trail left by aircraft exhaust freezing in cold upper air. A persistent contrail means humid air aloft and possibly approaching weather; a vanishing one means dry air. The sky's simplest hygrometer.

A hurricane-force wind and storm that strikes the west coast of Mexico, typically in October around the feast day of St. Francis (October 4). Also called el cordonazo de San Francisco — "the lash of St. Francis."

A gentle night land breeze that blows from November through May at La Paz, near the southern tip of Baja California. A benign, reliable, quiet wind.

Mist that gathers in valleys overnight and is exhaled when the sun rises. The valley breathes it out like a slow exhalation at dawn.

The removal of fine, loose material from a surface by wind, leaving behind the coarser particles that the wind cannot lift. Deflation is how desert pavement forms — the sand and silt blow away, and the pebbles and stones settle into a tight mosaic. It is also how desert basins deepen: the wind excavates them grain by grain, sometimes creating depressions that lie below sea level. The Qattara Depression in Egypt, 440 feet below sea level, was carved largely by deflation.

The Northern California counterpart of the Santa Ana — a hot, dry, offshore wind that blows from the northeast through the San Francisco Bay Area, most dangerously in autumn. Named for Mount Diablo in Contra Costa County. The Diablo winds drove the 2017 Tubbs Fire, the 2018 Camp Fire, and multiple other devastating wildfires.

Ice crystals suspended in clear, calm air near the ground on extremely cold days, glittering in sunlight like falling dust. Not a cloud, not precipitation — the air itself has frozen and is slowly settling. Diamond dust produces halos, sun dogs, and light pillars.

A period of suspended development in an insect or other organism, triggered by environmental conditions — usually the onset of cold or drought. The organism effectively pauses its life until conditions improve. Diapause is not sleep; it is a programmed halt, a biological strategy for surviving seasons that cannot be lived through any other way.

The inverse of a contrail: a thin line of blue sky punched through an existing cloud layer by an aircraft's heat. Sometimes called a hole punch when the plane climbs through at an angle. The cloud erased rather than created.

A belt of calm, light, or absent winds near the equator where the trade winds of the Northern and Southern Hemispheres converge and neutralize each other. Sailing ships could be becalmed in the doldrums for days or weeks. The word also means a state of listlessness or stagnation — the meteorological condition became the metaphor.

A ventifact with three distinct wind-carved faces — a three-edged stone shaped by shifting wind directions over time, each face planed by sand-blast from a different angle. The dreikanter is the signature ventifact shape, found in deserts and on glacial outwash plains wherever loose sand and exposed stones coexist with persistent wind.

A small, vigorous whirlwind made visible by the debris it lifts, spinning across open ground on hot days. Not a tornado — a dust devil is born from surface heating, not storm dynamics. It has no parent cloud. It is its own weather.

Distant thunder — the low, rolling rumble of a storm that is far away, carrying across the landscape. The word names not the storm but your distance from it. The sound of weather happening to someone else.

Either of the two moments each year when the sun crosses the celestial equator and day and night are of approximately equal length everywhere on earth. The vernal equinox marks the beginning of spring; the autumnal equinox marks the beginning of fall. The equinoxes are the moments of balance — the year tipping from light to dark or dark to light.

Dry northerly winds that blow across Greece, Turkey, and the Aegean Sea in summer, from May through September. They moderate the Mediterranean heat and have been known and named since antiquity. In Turkey they are called meltemi.

The degree to which a site is open to weather — wind, sun, precipitation, temperature extremes. A south-facing slope has different exposure than a north-facing one. A ridge has more exposure than a hollow. In mountaineering, exposure also means the consequence of a fall — a ledge with thousands of feet of air below it is "exposed" regardless of how wide it is.

fallstreak hole

A circular or elliptical gap in a cloud layer where supercooled water droplets have frozen into ice crystals and fallen out, leaving a hole fringed with wispy cirrus. Eerie, geometric, and often mistaken for something stranger than it is.

The unobstructed distance over water that wind travels before reaching a given point. Fetch determines wave size: the longer the fetch, the bigger the waves. A lake has limited fetch; the open Atlantic has thousands of miles of it. The word names the relationship between distance, wind, and water.

Electric flickers in the sky — atmospheric electrical discharges, sheet lightning, or the shimmer of aurora seen from below. Not a bolt but a wash of light, as if the sky briefly caught fire.

Trees permanently bent and shaped by prevailing wind, their branches streaming leeward like a banner. The tree that survived by surrendering, leaning away from the wind for the rest of its life. The shape is a compass needle written in wood.

A sudden, violent flood caused by intense rainfall in a watershed, arriving with little or no warning — the water rising from ankle-deep to chest-deep in minutes. Flash floods are the deadliest weather-related hazard in the desert Southwest, where impermeable rock, sparse vegetation, and narrow canyons concentrate runoff into walls of water, mud, and debris. A flash flood can be triggered by rain falling miles away, in a storm you cannot see, in a canyon where the sky is clear overhead.

A deceitful promise of better weather — a brief clearing in the sky that tempts you to believe the storm has passed when it hasn't. The mountain's lie.

A warm, dry wind that occurs on the leeward side of a mountain range. As air rises on the windward side, it cools and drops its moisture as rain or snow. Cresting the ridge, the now-dry air descends on the other side, compressing and heating as it drops — arriving in the valley below warmer and drier than when it started. The foehn is the archetype; all similar winds worldwide are classified as "foehn-type."

Moisture collected from fog onto leaves and branches, falling to the forest floor as secondary precipitation. In some coastal forests, fog drip delivers more water than rain. Trees are fog catchers — their surfaces condense what the air carries, and gravity does the rest.

A rainbow formed in fog rather than rain — pale, ghostly, almost colorless, because the water droplets in fog are too small to separate light into a full spectrum. A white arc against grey. The rainbow's quiet cousin.

The autumn process by which a river, lake, or sea gradually freezes over — beginning with shore ice, building through slush and pancake ice, and finally locking into a solid surface. In the Arctic and subarctic, freeze-up marks the transition from one mode of travel (boats) to another (sleds, snowmobiles, walking). The period between open water and solid ice — when the surface is neither navigable nor walkable — is one of the most dangerous and isolating times of the year.

Fremantle Doctor

A cooling afternoon sea breeze that arrives in Perth and Fremantle, Western Australia, during the hot summer months. Its arrival is a daily event that the city depends on — temperatures can drop 10 degrees or more within minutes. Often simply called "the Doctor."

A sudden rise in river level caused by heavy rain or rapid snowmelt, especially in spring. A freshet is not a flood — it's a pulse, a surge of new water flushing through the system, often carrying the winter's accumulation of debris and sediment with it.

A low-lying area where cold air pools at night, creating a microclimate significantly colder than the surrounding terrain. Where the earliest and latest frosts hit, where the most delicate plants die first. Also called a frost pocket. Cold air is heavy and flows downhill like water; frost hollows are the basins where it collects.

Steam rising from leads and polynyas in winter where relatively warm seawater meets air cold enough to freeze it on contact. The smoke is not smoke but vapor — the sea breathing into the cold.

A glassy tube formed in sand or rock by a lightning strike — a fossil of a single electrical event, branching downward into the earth along the path the bolt traveled. Hold a fulgurite and you are holding the shape of lightning.

The Sámi season when the snow begins to melt — warm days and cold nights, the skiing conditions always good. The reindeer herders move toward the mountains. Spring, but defined not by a calendar date but by what the snow and the animals are doing.

A thin powdering, as of sifted snow — the lightest possible dusting on rock or heather. Not a snowfall but a suggestion of one. The mountain wearing powder.

Getting up early in the morning to go outside and hear the first birds singing, especially the cuckoo. The act of waking before dawn specifically for this purpose.

Soft, small pellets of ice formed when supercooled water droplets freeze onto falling snowflakes, creating opaque, crumbly balls. Not quite hail, not quite snow — a liminal precipitation that bounces when it lands.

The opposite of a bluebird day — overcast, flat light, low clouds, the sky the color of old concrete. Not necessarily stormy, just the absence of anything good happening overhead.

A strong northeast wind in the central Mediterranean, particularly around Malta and Sicily. It can bring cold, rough seas and is dangerous to shipping in the Malta Channel.

ground blizzard

High winds swirling dry snow already on the ground — a blizzard without snowfall, in which the existing snowpack becomes airborne. Visibility drops to zero. The sky is clear above; the world is white below.

A cloud of snow that blows up from the ground during hard frost with little wind. Not a blizzard, not drifting snow — a cold exhalation from the surface itself.

Cold sea fog blown onshore, especially along the coasts of northeast England and Scotland. An advection fog — formed when moist maritime air crosses cold coastal water. Can shut down a summer afternoon in minutes.

A violent dust storm or sandstorm driven by strong winds, most commonly in the Sudan and the Sahel but also occurring in the American Southwest. A haboob can form a wall of dust thousands of feet high, advancing across the landscape like a living thing.

Cherry blossom blizzard — the moment in spring when petals fall en masse, carried by wind like snow. The air fills with pink. The ground turns white. A storm made of flowers.

A dry, dusty wind that blows from the northeast out of the Sahara across West Africa toward the Gulf of Guinea, mainly from November to March. It carries fine sand particles that reduce visibility, coat surfaces in grit, and dry the skin until it cracks. Despite its harshness, it brings relief from the humid tropical heat, and is sometimes called "the doctor" for this reason.

A shimmering distortion of air caused by heat rising from the ground — the visible convection that makes distant objects waver and dissolve. The landscape melting before your eyes.

A fierce, cold, northeasterly wind that blows down the western escarpment of Cross Fell in Cumbria — the highest point of the Pennines. It is England's only named wind. The Helm arrives with a distinctive formation: a bank of cloud, called the Helm, caps the summit like a helmet, and a parallel roll of cloud, called the Helm Bar, forms in the valley below. Between the two, the wind roars downslope with a violence that can knock people off their feet and strip tiles from roofs. It has been documented since at least the 17th century and remains incompletely understood.

Ice crystals deposited directly from water vapor onto cold surfaces under clear, calm skies — the frozen counterpart of dew. Maps the ground in white, skipping warm objects: stones, paths, anything conducting heat from below. The word hoar means white-haired, ancient.

A large tropical cyclone with sustained winds over 74 miles per hour — the most powerful weather system on earth, organized around a calm eye, drawing energy from warm ocean water. The word itself arrived in English from the Caribbean, where the storms were known before they had a Western name.

A period of warm, dry, hazy weather occurring in late autumn after the first frost — a false reprieve, the year offering a few last days of warmth before winter closes in. The sky is soft, the light golden, and the air carries a quality of valediction. Indian summers are not guaranteed; they are gifts.

A line connecting all the places experiencing the same biological season at the same time — spring's advancing front, mapped. Neat across a continent; jagged when you zoom in to a single hillside, where south-facing slopes are weeks ahead of north-facing ones.

A wind that flows downhill under the influence of gravity, formed when air in contact with a cold surface — a glacier, a snow-covered plateau, a mountain slope at night — becomes denser than the air around it and drains downslope. Katabatic winds range from gentle nocturnal breezes to the 200-mph piteraqs of Greenland.

A hot, dry, sand-bearing wind that blows across Egypt and the eastern Mediterranean, typically in spring. It can raise temperatures by 20 degrees Celsius in hours and fill the air with a fine, orange dust that infiltrates everything.

A microseason in the traditional Japanese calendar — a period of approximately five days named for a specific natural event occurring at that time. There are 72 kō in a year, three for each of the 24 sekki. Examples: "The east wind melts the ice" (February 4–8), "Peach blossoms begin to bloom" (March 10–14), "First rainbow appears" (April 15–19), "Harvest moon" (September 17–21). Each kō is a five-day act of noticing.

The cold, dry wind that strips the last leaves from the trees in late autumn, announcing winter. The first kogarashi of the season is a recognized event — the moment the year turns.

The sheltered side — of a hill, a building, a tree, a rock, a ship. The side away from the wind. Lee is where snow accumulates, where animals bed down, where you pitch a tent. The opposite is windward. Every object in a wind has a lee, and every lee is a microhabitat.

A lens-shaped cloud formed by mountain waves — smooth, dome-like, stationary even in high wind. Forms on the lee side of summits as air rides a standing wave, cooling at the crest and condensing into cloud. Often mistaken for flying saucers. Formally: altocumulus lenticularis.

A warm, moist easterly wind that blows through the Strait of Gibraltar from the Mediterranean. It often brings cloud, fog, and rain to the Rock of Gibraltar and the surrounding coast.

A vertical column of light extending above or below the sun, moon, or streetlight, caused by reflection off the flat faces of ice crystals drifting horizontally in calm, cold air. The pillar is not a beam — it's an illusion made by millions of tiny mirrors, each reflecting the light source at a slightly different altitude.

A strong, hot, dry wind that blows across the plains of northern India and Pakistan, mainly in May and June, before the monsoon arrives. The loo can raise temperatures above 45°C and causes fatal heatstroke. It is the wind of the hottest, most desperate weeks of the Indian year.

The cool, moist blanket of air that forms over cold ocean water and rolls onshore along the Pacific coast, producing the low stratus clouds and fog that define the coastal experience from Baja to British Columbia. The marine layer can be a few hundred feet thick or a few thousand. When it's deep, the coast is socked in; when it's shallow, hilltops poke through into sunshine while the valleys stay gray. "June gloom" is the marine layer at its most persistent. It burns off by noon or it doesn't, and the day is decided by which.

The localized atmospheric conditions in a small area that differ from the surrounding region — the frost hollow, the sun-baked south-facing wall, the cool air pooled behind a hedge. The weather inside the weather. Walk around a single tree and you can pass through several microclimates.

A cold, dry, powerful wind that blows from the northwest down the Rhône valley to the Mediterranean coast of France, mainly in winter and spring. It can sustain speeds of 60 miles per hour for days, dropping temperatures below freezing, stripping moisture from the soil, and sculpting the landscape — the windblown cypresses of Provence are shaped by the mistral.

A seasonal reversal of prevailing winds, most dramatically in South and Southeast Asia, where the summer monsoon brings months of heavy rain from the Indian Ocean and the winter monsoon brings dry air from the continent. The word has come to mean the rains themselves, but it is properly a wind — a wind that changes its mind twice a year.

Diné (Navajo) term for the Holy Wind — the atmosphere as a single, living, aware presence that grants life, movement, speech, and awareness to all beings. Not a metaphor but a description of reality in which the air you breathe is the same awareness that animates everything else. The "wind within one" (nilch'i hwii'siziinii) is not a personal soul but a portion of the encompassing Wind. Early missionaries mistook it for the Christian soul; it is closer to the medium in which all souls swim.

A large-scale storm along the northeastern coast of the United States and Atlantic Canada, named for the direction from which the strongest winds blow. Nor'easters can bring heavy snow, rain, coastal flooding, and hurricane-force winds. They are the signature weather events of the New England winter.

A cold, dry wind that sweeps across the Pampas of Argentina and Uruguay from the southwest, usually accompanying a cold front. It arrives suddenly, dropping temperatures and bringing brief, violent storms before clearing the sky.

Ragged fragments of low cloud clinging to the base of a larger rain cloud — the shredded, dark wisps that hang beneath the storm. Pannus forms when rain saturates the air below the cloud base, creating a secondary condensation layer. It's the signal that rain is imminent or already falling nearby.

Extreme winter depression — the weight of life felt during the dark months of the polar winter, when the sun does not rise and the cold is absolute. Not clinical depression but a cultural recognition that darkness has a gravity.

The distinctive scent released when rain falls on dry earth — an earthy, mineral sweetness produced by oils from plants absorbed into soil and rock, released by the impact of raindrops and mixed with geosmin from soil bacteria. The smell of the land greeting rain after a long absence.

The study of the timing of recurring natural events — when the cherry trees bloom, when the first frost arrives, when the geese fly south, when the salmon run begins. Phenology tracks the calendar that the living world keeps for itself, independent of human schedules. It is the oldest science, practiced by every agricultural and Indigenous culture that ever watched the sky and the soil for signals of what was coming next. In an era of climate change, phenological records have become some of the most valuable data on earth — they show, in accumulated observations stretching back centuries, that spring is arriving earlier and autumn later than it used to.

A cap cloud that forms atop a rapidly growing cumulus, created when the rising tower pushes air above it past its dew point. Brief and beautiful — usually absorbed by the cloud that made it. If a pileus appears over a growing cumulus, the storm is muscling upward fast.

A katabatic wind that pours off the Greenland ice sheet and down the coastal mountains, reaching speeds of up to 200 miles per hour. One of the most powerful winds on Earth. It occurs when cold, dense air pooled on the ice cap spills over the edge and accelerates downslope.

A towering convective cloud generated by the heat of a large fire, capable of producing its own lightning, downdrafts, and erratic winds. The fire makes its own weather. When a pyrocumulus reaches the tropopause and flattens into an anvil, it becomes a pyrocumulonimbus — and can seed new fires miles away with its lightning.

The dry area on the leeward side of a mountain range, created when moist air is forced upward over the mountains, drops its moisture as precipitation on the windward side, and arrives on the other side warm, dry, and wrung out. The rain shadow is the mountain's gift to one side and its theft from the other. Eastern Oregon, Nevada, and the Owens Valley of California exist in the rain shadow of the Cascades and the Sierra Nevada.

A visible column of rain falling from a cloud, seen from a distance — the dark curtain between sky and earth, moving across the landscape. Sometimes the rain evaporates before reaching the ground, becoming virga. A rain shaft is weather you can watch from the outside.

A feathery, opaque coating of ice that forms when supercooled water droplets in fog or cloud freeze on contact with a surface. On mountain summits, rime grows into elaborate, wind-facing sculptures on rocks, signs, and structures.

The shadows of clouds moving across the moorland on a sunny day. The landscape darkening and brightening in slow, silent waves as the sky passes over it.

roarie-bummlers

Noisy blunderers — storm clouds, loud and clumsy, rolling in over the hills. A Scots word that turns weather into character.

roaring forties

The belt of strong westerly winds found between 40 and 50 degrees south latitude, where there is almost no landmass to slow the air circling the globe. Sailors have named the progressively more violent zones beyond: the Furious Fifties and the Screaming Sixties.

The way nature begins to feel as autumn takes hold and the vestiges of summer disappear. Not the season itself but its emotional and sensory quality — the cooling, the dimming, the withdrawal.

A hot, dry, katabatic wind that blows from the desert interior of Southern California toward the coast, most commonly from October through March. It arrives with extreme low humidity, gusting through mountain passes at near-hurricane speeds, and is the primary driver of the region's catastrophic wildfires. The wind is also credited — in folklore and in the nervous systems of those who live with it — with inducing anxiety, insomnia, and bad decisions.

Sharp, irregular ridges of snow formed on a flat surface by wind erosion and deposit. Beautiful to look at — the snow carved into frozen waves, fins, and furrows — and miserable to walk or ski across.

One of the 24 major divisions of the traditional Japanese calendar, each approximately 15 days long, marking a specific stage in the progression of the year — from Risshun (Beginning of Spring, around February 4) through Daikan (Greater Cold, around January 20). Each sekki is further divided into three kō, or microseasons, of about five days each, for a total of 72 named periods in the year. The names describe what is happening in the natural world at that moment: "Spring winds thaw the ice," "Rotten grass becomes fireflies," "Crickets chirp around the door."

The process of aging and decline — in ecology, specifically the process by which leaves change color and fall. Senescence is what happens when a tree withdraws chlorophyll from its leaves before winter, revealing the yellows, oranges, and reds that were hidden beneath the green all along. The colors of autumn are not added; they are uncovered.

The cold, intermittent, passing rain of early winter — brief showers that come and go, wetting one hillside while the next stays dry. Not steady rain but fitful, moody precipitation that arrives without warning and leaves without explanation. Bashō wrote about it constantly.

A strong, hot, dry wind that blows across the deserts of the Arabian Peninsula and North Africa, carrying sand and capable of raising air temperatures above 130°F. The word implies danger — exposure can be fatal.

A hot, dry, dust-laden wind that originates in the Sahara and blows northward across the Mediterranean into southern Europe. By the time it reaches Italy, Sicily, or the Balkans it may have picked up moisture from the sea, arriving as a humid, oppressive, sand-tinged gale. Different names follow it across the region — ghibli in Libya, khamsin in Egypt, leveche in Spain.

Either of the two moments each year when the sun reaches its most extreme position north or south in the sky — the longest day in summer, the shortest in winter. The solstice is the hinge of the year: the point at which the days stop lengthening and begin to shorten, or stop shortening and begin to grow. Every culture that watches the sky has marked this moment.

A sudden flood in a burn or river after heavy rain or snowmelt — the water rising fast, turning brown with peat, carrying debris, filling the channel bank to bank. A spate transforms a gentle burn into something urgent.

Fine snow or ice particles blown from a ridge or summit by the wind, streaming off the peaks like smoke. Also used for sea spray carried by gale-force winds.

Large-scale electrical discharges above thunderstorm clouds — faint, reddish flashes extending upward into the stratosphere, lasting milliseconds. Sprites are lightning's mirror image: where lightning strikes downward, sprites reach up. They were not photographed until 1989.

St. Elmo’s fire

A luminous plasma discharge from pointed objects during a thunderstorm — a blue or violet glow appearing on ship masts, aircraft wings, church steeples, or even the tips of horns on cattle. The air itself becomes electric. Not fire but ionized gas.

In snow science, a stellar dendrite — the classic six-armed, branching snowflake shape formed in clouds between -12°C and -16°C with high humidity. The platonic ideal of a snowflake. Stellar crystals interlock when they land, creating the light, cohesive powder that skiers dream about.

A period of warm days and cold nights — the perfect conditions to start the sap flowing in maple trees. The temperature swings crack open the wood's capillaries and the sugar rises.

A bright spot of light on one or both sides of the sun, at the same altitude, caused by refraction through hexagonal ice crystals in high cirrus clouds. Also called a parhelion — a mock sun. On very cold days with diamond dust, sun dogs can be blindingly bright and ringed with color.

The accumulated total of heat units — typically degree-days above a baseline temperature — required for a biological event to occur. A cherry tree doesn't bloom on a date; it blooms when enough warmth has accumulated. Thermal sum is the calendar plants actually use — not days, but degrees.

A mature cumulonimbus cloud, the anvil-topped tower that means lightning, downdraft, and flash flood. The word is better than the Latin — it names the thing as it appears: a head, massive and dark, rising above everything else in the sky.

A thunderstorm in which snow falls instead of rain — lightning and thunder during a blizzard. Rare, disorienting, and loud. The combination of blinding snow and electrical discharge creates a sensory environment that feels like the weather has lost its mind.

The prevailing easterly winds that blow from the subtropical high-pressure belts toward the equator — from the northeast in the Northern Hemisphere, from the southeast in the Southern. They are the most consistent winds on Earth and for centuries were the engine of global commerce under sail.

A cold, dry wind that blows from the north or northwest across southern France and into the western Mediterranean — similar to the mistral but originating over the Pyrenees or the Massif Central rather than the Alps. In Italian, tramontana means both the north wind and the North Star.

Going out in windy weather, particularly into nature, to refresh and clear one's mind. The wind does the work — you just have to show up and let it blow through you.

urban heat island

The elevated temperatures in a city compared to the surrounding countryside, caused by impervious surfaces absorbing and re-radiating solar energy, waste heat from buildings and vehicles, and the absence of vegetation. A city can be 5–10°F warmer than the farmland around it. The city makes its own climate, and it's hotter.

A wind shifting clockwise — south to west, west to north. In the northern hemisphere, a veering wind typically signals fair weather or the passage of a warm front. The opposite of backing. The old rhyme: "A veering wind, fair weather; a backing wind, foul weather."

A stone that has been shaped, faceted, and polished by wind-driven sand — its surface planed smooth on the windward side, its edges sharpened to ridges. Ventifacts are the desert's whittled stones, each one a record of prevailing wind direction and duration. Small ventifacts can be picked up and examined; large ones are boulders sculpted in place over millennia.

Rain that evaporates before reaching the ground, hanging from the cloud base like a curtain that never touches the stage. The defining visual of dry-country skies. You see the rain; the ground doesn't.

The condition where snow, cloud, and blizzard dissolve the world into depthless pallor — no horizon, no shadow, no up or down. A white-out removes every visual reference point. You cannot tell ground from sky. People have walked off cliffs.

A sudden, violent gust of cold wind that descends from a mountainous coast to the sea, without warning. Encountered in the Strait of Magellan, the Aleutian Islands, and other places where steep terrain meets open water. A williwaw can capsize a small boat before the crew has time to react.

A line of trees, shrubs, or constructed fencing planted or erected to reduce wind speed and protect soil, crops, livestock, or buildings on the leeward side. Windbreaks are landscape features that shape the microclimate for hundreds of feet downwind — they reduce evaporation, prevent soil erosion, trap snow for moisture, and create shelter for wildlife. The Great Plains shelterbelt program of the 1930s planted 220 million trees in windbreaks stretching from Texas to North Dakota.

A tree uprooted by wind, or the act of wind uprooting trees. A windthrown tree falls with its root plate still attached, tearing a crater in the earth and leaving a mound of soil and roots standing vertically — a pit-and-mound topography that can persist for centuries, shaping the microtopography of the forest floor long after the fallen tree has decomposed.

A streamlined, wind-carved ridge of rock or compacted sediment, aligned parallel to the prevailing wind direction. Yardangs form when wind-driven sand abrades softer material, sculpting it into elongated, aerodynamic shapes — narrow at the windward end, wider at the lee. Fields of yardangs can resemble fleets of stone ships sailing across the desert floor.

Snow scenery — the landscape transformed by snow, everything softened, simplified, and made new. The world under white. A winter kigo that names not just the snow but the seeing of it.

A soft, gentle breeze, especially one from the west. The lightest of winds — barely enough to move a leaf, but enough to be felt on the skin.

A warm, dry foehn wind that blows from the west across the Andes and down into western Argentina, mainly in winter. It arrives hot and desiccating, sometimes carrying dust, and can raise temperatures by 10°C in minutes.

A haze or shimmer in the air — the visual distortion caused by heat or moisture, when the landscape wavers and the distance dissolves. The South African version of heat haze, with its own name and its own quality of light.