Explore the atmosphere and the processes behind weather and climate. Learn how clouds form, why storms develop, what drives winds and rainfall, and how climate patterns change over time. This category explains atmospheric phenomena and the science behind conditions we experience on Earth.
Weather & Climate How temperature inversions can turn mountain valleys into cold pools
IntroductionTemperature inversions can trap cold air in mountain valleys, turning them into persistent “cold pools” that...
Weather & Climate How lake-effect snow can bury one town while sparing another
IntroductionLake-effect snow can dump massive amounts of snow over a narrow area while nearby towns receive little or no...
Weather & Climate Why some summer afternoons suddenly explode into thunderstorms
IntroductionMany people notice how a calm, hot summer afternoon can suddenly become dark, windy, and noisy as a thunders...
Weather & Climate How mountains can create rain on one side and desert on the other
IntroductionMountains have a powerful influence on local weather. One common and striking effect is when a mountain rang...
Weather & Climate The surprising reason coastal cities often have milder weather
IntroductionCoastal cities often feel more comfortable than inland places. The surprising reason is not just pleasant se...
Weather & Climate Why does humidity make hot weather feel so much worse?
IntroductionOn a hot summer day, you may notice that some afternoons feel unbearably oppressive while others feel only m...
Weather & Climate What creates those dramatic rays of sunlight breaking through clouds?
IntroductionThose dramatic beams of light that burst through gaps in clouds and paint the landscape below are a common a...
Weather & Climate Why some snowflakes grow into plates while others become needles
IntroductionSnowflakes can take many delicate forms — flat, star-like plates or long, thin needles — and the reason for ...
Weather & Climate Why does snow sometimes squeak under your boots?
IntroductionOn cold winter days you may notice the quiet, high-pitched squeak of snow underfoot. That familiar noise—som...
Weather & Climate Why clouds sometimes vanish as they cross a mountain range
IntroductionClouds sometimes vanish as they cross a mountain range because mountains change the airflow, temperature, an...
Weather & Climate The hidden journey of a raindrop from cloud to ground
IntroductionThe hidden journey of a raindrop from cloud to ground traces a surprisingly complex path shaped by physics, ...
Weather & Climate How sleet forms in the narrow layer between rain and snow
IntroductionSleet forms in a narrow temperature layer when falling snow partially melts and then refreezes into small ic...
Weather & Climate What makes a cloud suddenly begin producing rain?
IntroductionClouds begin producing rain when tiny water droplets or ice crystals inside them grow large enough to fall t...
Weather & Climate Why does wind whistle around windows, wires, and buildings?
IntroductionWhen wind moves past windows, wires, or building edges it often produces a thin, musical sound commonly call...
Weather & Climate Why warm Chinook-like winds can make temperatures jump so quickly
IntroductionWarm, Chinook-like winds can make temperatures rise rapidly over a few hours, sometimes melting snow and tur...
Weather & Climate What makes desert temperatures fall so sharply after dark?
IntroductionDesert nights are famous for being cold. While daytime in deserts can be blisteringly hot, temperatures ofte...
Weather & Climate How snow cover can make an already cold day even colder
IntroductionSnow cover can make an already cold day feel and actually become colder. This article explains the physical ...
Weather & Climate Why does blowing snow sometimes reduce visibility to almost nothing?
IntroductionBlowing snow can turn a clear winter day into a scene of near-total whiteout in minutes. When wind picks up ...
Weather & Climate What creates a whiteout even when snow is barely falling?
IntroductionA whiteout is a weather condition where visibility is severely reduced and the landscape appears uniformly w...
Weather & Climate Why does frost sometimes form when the air temperature is above freezing?
IntroductionFrost — the delicate white coating on grass, car windows, and rooftops — often appears on cold mornings. Sur...
Weather & Climate The atmospheric conditions behind enormous fluffy snowflakes
IntroductionOn some winter days you may notice remarkably large, soft, "fluffy" snowflakes that seem to float down more ...
Weather & Climate How cold air can become trapped in valleys overnight
IntroductionCold air pooling in valleys overnight is a common and observable weather behavior that affects frost, fog, a...
Weather & Climate Why some places get snow while nearby towns get rain
IntroductionWhy can one town be buried in snow while a village just a few miles away sees only rain? Small differences i...
Weather & Climate The powerful downslope winds that can reshape local weather
IntroductionDownslope winds are fast, often warm and dry winds that flow from higher terrain down into valleys and plain...
Weather & Climate How wind can sculpt snow into ripples, waves, and sharp ridges
IntroductionWhen wind meets snow, simple white blankets can be transformed into intricate ripples, soft waves, and razor...
Weather & Climate The atmospheric trick that makes distant mountains look unusually clear
IntroductionOn some clear mornings or after hot weather, distant mountain ranges can look startlingly sharp and close, e...
Weather & Climate How clouds can keep nights warmer than clear skies
IntroductionOn nights when the sky is cloudy, temperatures often stay noticeably warmer than on clear nights. This commo...
Weather & Climate What makes a heat wave last for days or even weeks?
IntroductionHeat waves—periods of unusually hot weather lasting days to weeks—can strain health, infrastructure, and the...
Weather & Climate How dry air changes the way heat feels on your skin
IntroductionDry air changes how heat feels on your skin by altering the balance of heat transfer processes—mainly evapor...
Weather & Climate Why does the sky sometimes turn green before a severe storm?
IntroductionHave you ever noticed the sky taking on an eerie greenish tint just before a severe storm? That unusual colo...
Weather & Climate How trees, buildings, and hills reshape the wind around them
IntroductionWind around us is not a uniform breeze; it is constantly redirected and reshaped by the things it encounters...
Weather & Climate How tiny particles in the air help clouds and raindrops form
IntroductionAirborne tiny particles—dust, salt, pollen, and microscopic bits of pollution—play a crucial role in making ...
Weather & Climate What makes the air smell different before or after rain?
IntroductionHave you ever noticed a fresh, earthy scent in the air just before or after rain? That familiar smell—often ...
Weather & Climate The quiet weather pattern that can trap pollution near the ground
IntroductionMany cities and regions sometimes wake up under a heavy, hazy sky even when there is no obvious source of sm...
Weather & Climate The small-scale whirlwinds that spin up on hot sunny days
IntroductionOn hot, sunny days you may see small whirling columns of dust or leaves tumble across parking lots, fields, ...
Weather & Climate What makes hailstones grow inside thunderstorms?
IntroductionHailstones are balls or lumps of ice that form inside strong thunderstorms. They grow through cycles of free...
Weather & Climate What makes some winds gusty while others stay steady?
IntroductionWind can feel very different from one moment to the next: sometimes a steady, gentle breeze; other times sud...
Weather & Climate How dust devils form without a thunderstorm
IntroductionDust devils are spinning columns of air that lift dust, sand, and debris from the ground. They form in clear...
Weather & Climate Why some clouds rain themselves out while others keep growing
IntroductionClouds form and change constantly, but some seem content to grow taller and taller while others quickly “rai...
Weather & Climate How the jet stream steers weather across entire continents
IntroductionThe jet stream is a fast, narrow band of winds high in the atmosphere that plays a central role in steering ...