Types of Tornado Alert https://xkcd.com/3267/ I hate the unearthly sound my phone makes when the weather service issues a tornado harbinger. Explain xkcd: https://www.explainxkcd.com/wiki/index.php/3267

Holes https://xkcd.com/3266/ If you're thinking 'Wait, a giant crystal cave in Mexico? What's that?' then I'm SO excited for the image search you're about to do. Explain xkcd: https://www.explainxkcd.com/wiki/index.php/3266

Asteroid Threat https://xkcd.com/3265/ Paleontologists have long worried that the dinosaurs blasted into space 66 million years ago will one day complete their orbits and fall back down. Explain xkcd: https://www.explainxkcd.com/wiki/index.php/3265

720 Ollie https://xkcd.com/3264/ This discovery was key to his demonstration of regular/goofy symmetry violation, which won him gold in the theory portion of the X Games. Explain xkcd: https://www.explainxkcd.com/wiki/index.php/3264

Baryon Asymmetry https://xkcd.com/3263/ Wait, what do you mean, 'dark matter'? It's not dark, it interacts with high-energy gamma rays ... right? Oh jeez, did I forget to make it interact? Explain xkcd: https://www.explainxkcd.com/wiki/index.php/3263

Sports Commentary https://xkcd.com/3262/ The plural of anecdote may not be data, but the singular of data is anecdote. Explain xkcd: https://www.explainxkcd.com/wiki/index.php/3262

Side Effect https://xkcd.com/3261/ Brace yourself--the chirp gets pretty weird. Explain xkcd: https://www.explainxkcd.com/wiki/index.php/3261

Messi https://xkcd.com/3260/ Commentators agree that this will probably be the last World Cup in which Messi faces serious competition. Explain xkcd: https://www.explainxkcd.com/wiki/index.php/3260

Tethys https://xkcd.com/3259/ In order to carry the necessary crafting supplies, they built the ships at 12:1 scale. Explain xkcd: https://www.explainxkcd.com/wiki/index.php/3259

Plate Flip https://xkcd.com/3258/ It's great for exfoliating your skin, bones, houses, cities, landscape, etc. Explain xkcd: https://www.explainxkcd.com/wiki/index.php/3258

Beam Pipe https://xkcd.com/3257/ 'If you keep trying to spray your collaborators with the beam when they're not looking, I'm turning off the ion source and NO one will get to play with the beam!' --Physics's mom Explain xkcd: https://www.explainxkcd.com/wiki/index.php/3257

Nostalgia Content https://xkcd.com/3256/ Gen-Z got a chunk of the Carboniferous, and now all their memes are about how pathetic and small today's dragonflies are. Explain xkcd: https://www.explainxkcd.com/wiki/index.php/3256

Planetary Science https://xkcd.com/3255/ The research was overseen by the Institutional Review Board, which is what I named my surfboard. Explain xkcd: https://www.explainxkcd.com/wiki/index.php/3255

Detector https://xkcd.com/3254/ No other experiment has a lower false negative rate. Explain xkcd: https://www.explainxkcd.com/wiki/index.php/3254

Sunbeam https://xkcd.com/3253/ While weather control is typically thought of as a superpower, the unconscious ability of astronomers and astrophotographers to summon clouds is more properly classified as a curse. Explain xkcd: https://www.explainxkcd.com/wiki/index.php/3253

Ancestral Genomes https://xkcd.com/3252/ SUGGESTIONS FOR FUTURE RESEARCH: No further research is needed as it is frankly none of our business. Explain xkcd: https://www.explainxkcd.com/wiki/index.php/3252

Time Machine Conversation https://xkcd.com/3251/ It's possible to do sea navigation without a compass, but you'll have to get some spoilers from the Polynesians. Explain xkcd: https://www.explainxkcd.com/wiki/index.php/3251

Flag Design https://xkcd.com/3250/ Every place has a local cryptid; more places need a local Pictish Beast, a creature in historical art that's drawn so weirdly that no one can tell what animal it's supposed to be. Explain xkcd: https://www.explainxkcd.com/wiki/index.php/3250

Neutrino Project https://xkcd.com/3249/ We definitely put the pool in a mine for shielding. It was absolutely not to hide it from the funding people. Explain xkcd: https://www.explainxkcd.com/wiki/index.php/3249

182.8 Meters https://xkcd.com/3248/ They rounded down to 182.8 instead of rounding up to 182.9 because 182.9 might make the statement incorrect. Explain xkcd: https://www.explainxkcd.com/wiki/index.php/3248

Particle Census https://xkcd.com/3247/ Remember, your answers to the physics census are confidential; we will not be issuing Pauli exclusion principle citations. Explain xkcd: https://www.explainxkcd.com/wiki/index.php/3247

Speedrun https://xkcd.com/3246/ Usain Bolt holds the world record in the 100 meter speedrun. Explain xkcd: https://www.explainxkcd.com/wiki/index.php/3246

Results Age https://xkcd.com/3245/ Please, we need your help. Our research suggests you're the last living descendant of the person who knew how to format this config file. Explain xkcd: https://www.explainxkcd.com/wiki/index.php/3245

Pullback Drive https://xkcd.com/3244/ "How does the spring not run out almost immediately?" "We pull it back REALLY far." Explain xkcd: https://www.explainxkcd.com/wiki/index.php/3244

Crystal Gazing https://xkcd.com/3243/ (alt-text too long for a BlueSky message, see image alt-text instead) Explain xkcd: https://www.explainxkcd.com/wiki/index.php/3243

Aperiodic Table https://xkcd.com/3242/ Scientists occasionally invent alternative periodic table layouts, which is usually a sign that they don't have enough enrichment in their enclosures. Explain xkcd: https://www.explainxkcd.com/wiki/index.php/3242

Horizontal Stabilizers https://xkcd.com/3241/ It started as a mistake that everyone was afraid to admit to, and then it stuck because removing it 'looks silly.'. Explain xkcd: https://www.explainxkcd.com/wiki/index.php/3241

Bottle https://xkcd.com/3240/ "I know it seems impossible, but the trick is that I sailed in here when I was very young." Explain xkcd: https://www.explainxkcd.com/wiki/index.php/3240

Simple Machines https://xkcd.com/3239/ It's hard to decide which simple machine system to invest in. DeWalt makes a great lever and inclined plane, but I hear Milwaukee's wheel-and-axles are really good. Explain xkcd: https://www.explainxkcd.com/wiki/index.php/3239

Soniferous Aether https://xkcd.com/3238/ Imagine you could ride alongside a sound wave. It would probably be pretty cool, right? We're putting in a departmental budget request to buy a really fast plane so we can check it out. Explain xkcd: https://www.explainxkcd.com/wiki/index.php/3238

Husband and Wife https://xkcd.com/3237/ Borat came out twenty years ago this year--closer to the breakup of the Soviet Union than to today--but it honestly feels like it's been even longer, somehow. Explain xkcd: https://www.explainxkcd.com/wiki/index.php/3237

Border Message https://xkcd.com/3236/ Thanks to differences in logging regulations, the messages actually turned out to be visible from the air. Explain xkcd: https://www.explainxkcd.com/wiki/index.php/3236

Types of Board Game https://xkcd.com/3235/ I can't believe Candles of Vienna caved to commercial pressure and added the Goku expansion. Explain xkcd: https://www.explainxkcd.com/wiki/index.php/3235

Europa Missions https://xkcd.com/3234/ Before resurfacing, they promise to inspect the ice for any evidence of hockey-playing life. Explain xkcd: https://www.explainxkcd.com/wiki/index.php/3234

Make It Myself https://xkcd.com/3233/ It's not as big a loss as it looks, because now I have have leftover supplies, which will help me talk myself into doing this all over again with a new project! Explain xkcd: https://www.explainxkcd.com/wiki/index.php/3233

Countdown Standard https://xkcd.com/3232/ Anyone who is caught counting 'three ... two ... one ... zero ... GO!' will be punished with a lifetime of eating only ISO standard food samples. Explain xkcd: https://www.explainxkcd.com/wiki/index.php/3232

Lightning https://xkcd.com/3231/ Maybe you should wear one too? I guess I'm taller than you, so as long as I have one we're fine. Explain xkcd: https://www.explainxkcd.com/wiki/index.php/3231

Overton https://xkcd.com/3230/ I think I accidentally installed an Overton window in my bedroom. A few months ago, the sun wasn't in my face in the morning, but now it is. Explain xkcd: https://www.explainxkcd.com/wiki/index.php/3230

Grammar https://xkcd.com/3229/ Communication is one of the most popular ways to transmit information, ahead of rivals such as Explain xkcd: https://www.explainxkcd.com/wiki/index.php/3229

Day Counter https://xkcd.com/3228/ It has been −2,147,483,648 days since our last integer overflow. Explain xkcd: https://www.explainxkcd.com/wiki/index.php/3228

Creation https://xkcd.com/3227/ This xkcd.com update introduces a variety of new reading modes which can be activated through the menu. Explain xkcd: https://www.explainxkcd.com/wiki/index.php/3227

Home Solar https://xkcd.com/3226/ (alt-text too long for a BlueSky message, see image alt-text instead) Explain xkcd: https://www.explainxkcd.com/wiki/index.php/3226

Satellite Pollution https://xkcd.com/3225/ We're working to make sure the images are as up-to-date and accurate as possible, with a minimum number of sponsored galaxies. Explain xkcd: https://www.explainxkcd.com/wiki/index.php/3225

Centimeter Wavelengths https://xkcd.com/3224/ Yes, the cosmic microwave background is great, but what about the earthly microwave foreground? Explain xkcd: https://www.explainxkcd.com/wiki/index.php/3224

Inflation Timeline https://xkcd.com/3223/ Depending what corners of the internet you hang out on, 'regular' may at times awkwardly coexist with 'sexy.' Explain xkcd: https://www.explainxkcd.com/wiki/index.php/3223

Star Formation https://xkcd.com/3222/ It's ok, I still have some nice, cool gas clouds that aren't collapsing. As long as nothing ionizes them, I can continue to enjoy their ... HEY! NO!!! Explain xkcd: https://www.explainxkcd.com/wiki/index.php/3222

Landscape Features https://xkcd.com/3221/ 'Well, there's speculation that it's due to a mantle hotspot.' --a geologist who's trying to cover up the fact that they didn't hear your question Explain xkcd: https://www.explainxkcd.com/wiki/index.php/3221

Rotational Gravity https://xkcd.com/3220/ I don't get it. The peak acceleration for passengers was WAY lower than in the giant-waterslide-loop-the-loop incident the other cruise line fired me for. Explain xkcd: https://www.explainxkcd.com/wiki/index.php/3220

Planets and Bright Stars https://xkcd.com/3219/ (alt-text too long for a BlueSky message, see image alt-text instead) Explain xkcd: https://www.explainxkcd.com/wiki/index.php/3219

Subduction Retrieval https://xkcd.com/3218/ Aww, the oceanic crust and the continental crust are getting married! Explain xkcd: https://www.explainxkcd.com/wiki/index.php/3218