Thunderstorms Trivia
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50 free Thunderstorms trivia questions with answers — science & nature quiz, new questions added Aug 2026.
Thunderstorms trivia for weather nerds, storm chasers, science teachers and anyone who counts the seconds between the flash and the bang. The quiz starts with the anatomy of a storm: the cumulus, mature and dissipating stages, the anvil-topped cumulonimbus, updrafts and downdrafts, and why single-cell storms fizzle in half an hour while a supercell can spin for hours. Then it covers the hazards and the records: hail and Cheyenne's title as North America's hailiest city, bow echoes and derechos, the Enhanced Fujita scale, downbursts and flash floods, thunderstorm asthma, the 2,000 storms happening on Earth at any moment, Kampala and Singapore's claims to be the most thunderous places, and Venezuela's everlasting Catatumbo lightning. Later rounds turn to lightning itself, air heated to 30,000 °C, 44 flashes a second worldwide, fulgurites, red sprites, the Empire State Building's 23 hits a year, Roy Sullivan's seven strikes, Franklin and Diviš, and the gods from Zeus to Thor and Indra who once got the blame. Questions run from easy to expert, and every answer was checked against a reference page and carries its source. See also our weather, tornadoes, hurricanes and clouds quizzes.
30 of 50 questions with answers and explanations. Play the quiz
Q 01Thunderstorms occur in which type of cloud?
Cumulonimbus
Cumulonimbus clouds tower high enough for ice crystals and soft hail to collide inside them, and those countless collisions build up the electric charge that lightning releases.
Q 02What is the first phase of a thunderstorm's life cycle called?
The cumulus stage
The cumulus stage begins when heated ground, colliding winds or rising terrain push moist air upward; as its vapour condenses it gives off heat, which keeps the young cloud climbing.
Q 03What gives a mature thunderstorm cloud its characteristic anvil shape?
Air spreading out at the tropopause
Air spreading out at the tropopause flattens the cloud top: the stable, warmer layer above works like a lid the rising air cannot punch through, so it fans out sideways instead.
Q 04What marks the mature stage of a thunderstorm?
Both an updraft and a downdraft at once
Both an updraft and a downdraft at once: falling rain drags air down beside the rising current, which is why this is the stage of hail, the heaviest rain and the most frequent lightning.
Q 05Forecasters' slang for scattered summer-afternoon thunderstorms is named after which snack?
Popcorn
Popcorn convection: the storms burst up here and there in the afternoon heat, and each dies within about an hour as its own rain-cooled downdraft chokes the updraft that feeds it.
Q 06What atmospheric ingredient allows a storm to become a long-lived supercell?
Vertical wind shear
Vertical wind shear tilts the storm so that its rain falls beside the updraft instead of straight back through it, letting the storm feed itself for hours rather than minutes.
Q 07What is the rotating updraft inside a supercell called?
A mesocyclone
A mesocyclone shows up on Doppler radar as winds racing toward and away from the dish side by side, which lets forecasters warn of a possible tornado before one has formed.
Q 08Which radar signature, traced by rain wrapping around a supercell's rotation, warns that a tornado may form?
A hook echo
A hook echo forms as the storm's rear downdraft drags rain and hail around the back of the updraft; an Illinois engineer working on a radar first caught one beside a confirmed tornado in 1953.
Q 09Which is the most common type of thunderstorm development?
Multi-cell clusters
Multi-cell clusters renew themselves: each cell's cold outflow joins a shared gust front that lifts warm air into a fresh cell every few minutes, so the cluster outlives any single cell by hours.
Q 10A squall line that bulges outward on radar is called what?
A bow echo
A bow echo bends because a jet of air rushing in behind the line pushes its middle ahead of the ends, so the most damaging straight-line winds strike near the crest of the bulge.
Q 11Which fast-moving windstorms, born from lines of summer thunderstorms, flatten trees across hundreds of miles with straight-line gusts?
Derechos
Derechos take their name from the Spanish for 'straight': an Iowa physics professor coined it in 1888 to set their straight-line winds against the turning winds of a tornado.
Q 12In the US, hail as wide as which coin makes a thunderstorm officially 'severe'?
A quarter
A quarter, about an inch wide: until 2010 the bar was penny-sized hail, but it was raised after studies found smaller stones did little damage and people were tuning out the frequent warnings.
Q 13Mesoscale convective systems, vast thunderstorm complexes, supply much of the summer rain for which US region?
The Great Plains
Q 21What is a waterspout, technically?
A tornado over water
A tornado over water, though the commonest kind is the weak 'fair-weather' spout, which starts at the water's surface and climbs upward instead of dropping from a rotating storm.
Q 22What is sinking air that slams into the ground beneath a thunderstorm called?
A downburst
A downburst can suddenly rob a landing aircraft of lift; several fatal airliner crashes were blamed on them, which is why pilots now train to recognise and escape one.
Q 23What triggers the medical phenomenon known as 'thunderstorm asthma'?
Pollen grains bursting into tiny fragments
The Great Plains get these complexes when afternoon storms merge into one system that can last more than twelve hours, raining on through the night and often into the next morning.
Q 14Severe thunderclouds sometimes take on which eerie tint, long linked in folklore to hail?
Green
Green: one leading idea is that clouds heavy with water scatter bluish light, which the red glow of a low sun turns green, though studies have found no proof that the tint means hail or a tornado.
Q 15Medieval Europeans tried to drive hailstorms away from their crops by firing cannons and sounding what?
Church bells
Church bells later gave way to purpose-built 'hail cannons', which some growers still fire at approaching storms, though a 2006 scientific review called them a waste of money and effort.
Q 16The largest hailstone recovered in the United States, found in South Dakota in 2010, was about as wide as which ball?
A volleyball
A volleyball: the stone measured 8 inches across and weighed nearly two pounds, and it had already shrunk, because a power cut hit the finder's home before weather officials could measure it.
Q 17Which of these does the US National Weather Service call safe to use indoors during a thunderstorm?
A cordless phone
A cordless phone has no wire to bring a strike's current to your hand; lightning that hits a building can run through its wiring and plumbing, so corded phones, computers and taps are out.
Q 18What name is given to an intense fear of thunder and lightning?
Astraphobia
Astraphobia comes from the Greek for lightning; many children have the fear and grow out of it, while sufferers of any age may watch the weather anxiously for any sign of a coming storm.
Q 19What is the strongest category on the Enhanced Fujita tornado scale?
EF5
An EF5 is judged from the wreckage, not from measured wind: surveyors rate a tornado by what it destroyed, and the top category typically means well-built houses swept clean off their foundations.
Q 20NOAA's tornado probe TOTO inspired the sensor barrel Dorothy in which disaster film?
Twister
Twister borrowed the idea from the Totable Tornado Observatory, a drum of sensors that government scientists spent years trying to set down in a tornado's path, with little success; it was named after Dorothy's dog in The Wizard of Oz.
Pollen grains bursting into tiny fragments slip past the nose and deep into the lungs; one 2016 storm over Melbourne left thousands struggling to breathe within hours and overwhelmed the city's ambulances.
Q 24Roughly how many thunderstorms are occurring on Earth at any given moment?
2,000
About 2,000 at once adds up to some 16 million thunderstorms a year, most of them over tropical land, where the daily build-up of heat and moisture sets them off almost every afternoon.
Q 25A thunderstorm nicknamed Hector forms over the Tiwi Islands almost every wet-season afternoon, within sight of which Australian city?
Darwin
Darwin: Hector builds in the same spot so reliably, as sea breezes collide over the islands, that Second World War pilots steered by the towering cloud and gave it its name.
Q 26In summer, air-mass thunderstorms are an almost daily occurrence in which US state?
Florida
Florida is a peninsula with warm water on both sides: on summer afternoons the sea breezes from the Gulf and the Atlantic push inland, collide over the land and force the humid air upward.
Q 27The energy a typical thunderstorm releases is often likened to that of which weapon?
The Hiroshima atomic bomb
The Hiroshima atomic bomb released less energy than an ordinary storm does, but the storm lets it out slowly: nearly all of it is heat given off as water vapour condenses into cloud.
Q 28In 2011, NASA announced that its Fermi space telescope had caught thunderstorms hurling beams of what into space?
Antimatter
Antimatter: gamma-ray flashes tied to lightning create electrons and positrons, and in one case the particles rode the Earth's magnetic field from a storm over Zambia to strike Fermi above Egypt.
Q 29Which field research project used 'Doppler on Wheels' radar trucks to study tornadic storms?
VORTEX2
Storm chasers head to the Great Plains and Canadian Prairies every spring.
Q 30In Norse myth, the thunder god Thor rode a chariot pulled by which animals?
Goats
Goats: in the Prose Edda Thor cooks and eats his pair for supper and raises them to life with his hammer next morning, but a farmer's son has cracked a leg bone for the marrow, and one goat comes back lame.