Why are Weather Forecasts not always Accurate?

Summary

Who Smarted? Podcast Summary

Episode Title: Why Are Weather Forecasts Not Always Accurate?
Date: January 26, 2026
Hosts and Characters:

• Trusty Narrator (“A”)
• Virga the Fortune Teller (“B”)
• Chet Nickerson, Meteorologist (“D”)

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Episode Overview

This episode of “Who Smarted?” tackles a common question: Why are weather forecasts sometimes wrong? Through a humorous family picnic scenario—complete with a fortune-telling guest and a slightly defensive weatherman—the show explores what goes into making predictions, how forecasting technology works, and the fascinating (and sometimes funny) history of meteorology. The episode is packed with trivia, jokes, and interactive questions designed to make scientific concepts fun for kids.

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Key Discussion Points & Insights

1. What Does a Weather Forecast Mean?

• The episode opens at a “Who Smarted” family picnic, where the hosts confront the surprise arrival of rain despite a “beautiful day” forecast.
• Chet Nickerson, a meteorologist, reports a “33% chance of precipitation,” sparking a discussion about what that number really means.
  • [03:47] A: “Do you know what 33% means?... Let's say I go to a pizza parlor and order three slices, two cheese and one with pineapples. Which part is 33% of my order?...Now let's say the one pineapple slice represents rain. Then the two cheese slices would represent no rain. That's 66%... I like those chances.”

2. History of Weather Prediction

• The show then quizzes listeners on the origins of meteorology and the meaning of the word, revealing fun facts, such as the Greek root “meteoron” (“a thing high up”).
  • [06:53] A: "'Meteorology' comes from a Greek word meaning a thing high up. If you said C, you're right. The Greek word 'meteoron' refers to anything high in the sky..."
  • Ancient beliefs about weather are discussed, including Aristotle’s (incorrect) theories outlined over 2,000 years ago.
    • [07:38] A: “Aristotle was very smart. But his book on weather...contains a lot of errors. For example, it says the Earth is at the center of the universe with three moving layers above it...Unbelievably, the answer is [it took] 2000 years [to disprove Aristotle].”

3. How Modern Weather Is Predicted

• The show explains the tools meteorologists use:
  • Weather Balloons:
    • [09:54] D: “At least twice a day, America's National Oceanic and Atmospheric Administration...sends balloons into the air from nearly 100 different locations. Each balloon has sensors for air pressure, temperature, humidity, wind speed and wind direction.”
  • Radar:
    • [10:22] A: “Know that sound? It's radar.”
    • [10:30] D: “Radar uses radio waves to detect nearby precipitation, cloud rotation, wind strength, wind direction, and more.”
  • Satellites:
    • [11:01] A: “There's also a tool that lives in outer space. Do you know what it is?...Did you say a satellite?...Some satellites capture images of the Entire Earth every 30 seconds so you can see where all that weather is coming and going.”
  • Supercomputers:
    • [11:33] D: “The Supercomputers used by NOAA meteorologists are nearly 6 million times more powerful than the computer or tablet you have at home.”
• Meteorologists combine all this information using complex mathematical models, but expert humans are still needed to adjust the predictions.

4. Why Forecasts Can Still Be Wrong

• The episode revisits why Trusty Narrator’s picnic is suddenly soaking wet. Chet explains how weather forecast percentages are calculated:
  • [17:08] D: “When you hear a percentage, it's not just the odds as to whether you'll get bad weather. It's actually the result of a mathematical equation. And that equation is the area where the rain might happen...times a meteorologist's confidence it will occur.”
  • For example, a 33% chance can mean the meteorologist is 100% sure it will rain in a third of the area—and unfortunately, the picnic was in that unlucky third.
  • [17:29] D: “And I was right. Unfortunately, the 1/3 of Smartyville where the storm hit includes this park where you decided to have your picnic...Should have had it across town near the dog run. It's not raining there.”

5. Accuracy of Modern Forecasts

• The show shares stats on sci-fi level accuracy in modern weather forecasts:
  • [16:05] A: "According to NOAA, a five day forecast today can accurately predict the weather 90% of the time. That means it's wrong only once out of every 10 times and a seven day forecast is 80% accurate. Predicting weather farther out from that is more dicey...a 10 day forecast, it's only accurate half the time."
  • [16:29] D: “You know, people love to focus on our mistakes, but it's amazing how often we're right..."

6. Weather Superstitions & The Farmer’s Almanac

• The fortune teller (Virga) relies on old-fashioned weather lore, such as reading candle flames and the color of the moon.
  • [18:20] B: “Yeah, bad idea. But I knew it was going to rain last night. How? The moon. It was pale with fuzzy edges.”
  • [18:35] A: “...these things seem to work like they did today, but there's not much science behind it. For a more accurate forecast, stick with the meteorologists.”

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Notable Quotes & Memorable Moments

• On Common Complaints:
  • [06:20] A: “Don't people say it's the only profession where you can be wrong all the time and still get paid?”
  • [06:27] D: “That is way off the mark. It actually might surprise you, but meteorologists are right way more often than you think.”
• History Fun Fact:
  • [07:38] A: “His [Aristotle’s] book on weather, considered the first of its kind, contains a lot of errors...Unbelievably, the answer is 2000 years [to disprove].”
• Weather Math Explained:
  • [17:08] D: “When you hear a percentage, it's not just the odds...It's actually the result of a mathematical equation...the area where the rain might happen, like your town, times a meteorologist's confidence it will occur.”
• Supercomputer Power:
  • [11:33] D: “The Supercomputers used by NOAA meteorologists are nearly 6 million times more powerful than the computer or tablet you have at home.”

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Timestamps for Key Segments

| Time | Segment/Topic | |--------|------------------------------------------------| | 01:36 | Picnic setup, introduction of “Virga” | | 03:47 | Explaining probability in weather forecasts | | 06:53 | Meteorology origins quiz; Greek & Aristotle | | 09:54 | Weather balloons and data gathering | | 10:22 | Radar’s role in forecasting | | 11:01 | Satellites and “the big picture” | | 11:33 | The role of supercomputers in weather | | 16:05 | How often are forecasts accurate? | | 17:08 | The meaning of forecast percentages explained | | 18:20 | Weather folklore and Farmer’s Almanac | | 18:59 | Why science is better than superstition |

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Episode Tone & Takeaway

• Energetic: The hosts maintain a playful, interactive approach—even making statistics about error rates fun and engaging.
• Relatable: Jokes about soggy pizza and quirky party guests help kids connect weather forecasting to real-life moments.
• Encouraging Critical Thinking: Via fun quizzes and myth-busting, kids are gently shown that science, though not perfect, beats superstition for real answers.

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In Summary

Weather forecasting is a complex science that blends advanced technology, history, and skilled human judgment. Meteorologists—even with fancy computers—can’t always be right because the atmosphere is huge and chaotic. But today, forecasts are incredibly accurate—so trust your local meteorologist over fortune-telling candles or moon lore, especially if you're planning a picnic!

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“Who Smarted?” delivers science in the most entertaining way, making cloudy topics clear and fun.

Transcript

[A]

Hey there, smarty pants. Is it chilly outside?

[B]

It's freezing out here.

[A]

Are you stuck indoors or are you a lucky smarty pants enjoying a warm day while the rest of us bundle up?

[C]

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[A]

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[D]

Yes.

[A]

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[D]

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[C]

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Get way less ads so you can enjoy all the episodes uninterrupted. So you can stay in the smarty zone and you get way more who Smarted. Not only do you get ad free listening, but you're also going to get bonus subscriber only episodes. But you have to hurry up.

[C]

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[A]

It's only available directly through our website, so just head to whosmarted.com and click on Winter Warm Up Sale. Don't wait. This offer disappears on January 30th. Stay cool, stay warm, and stay smart. Go to WhoSmarted.com right now and click Winter Warm Up Sale to start getting all these benefits for around 40 cents a week and you'll be directly supporting the show. Now that's a smarty deal. And now it's time for who's Smarted.

[D]

Psst.

[A]

Hey there, smarty pants. So glad you could make it to the Whosmarted family picnic. That's right. We've got snacks and games. And later, Chet Nickerson is going to put on a puppet show. Oh, boy. Thankfully, it's a perfect day for a picnic. The sun is shining, there's a gentle breeze, and barely a cloud in the sky. Well, except for that big gray one over there that I didn't notice until just now.

[B]

Yes, yes, I see dark clouds in your future.

[A]

Uh, I'm sorry, I don't remember inviting a spooky fortune teller to the picnic. And you are?

[B]

Virga. The name's Virga. I am indeed a spooky fortune teller. However, I am not here to predict your future. I am here to predict the weather. Yes, I see dark clouds. Many, many dark clouds. And lots of rain. Look. Look at this candle.

[A]

Yes, I see the candle that you're.

[B]

Suddenly holding Stare closely at the flame. See how it flickers and flares. You know what that means?

[A]

Uh, you're talking too close to it.

[B]

No, it means rain and wind and a near future where you get very, very, very wet.

[A]

Alright, I ain't buying any of this. A candle flame does not predict the weather.

[B]

Oh, you underestimate the power of the candle.

[A]

What do you think, smarty pants? Uh huh. Yeah, the Smartypants don't trust this forecast either. Instead, I'm gonna check my phone's weather app from expert meteorologists.

[D]

Did someone say meteorologist? This is Chet Nickerson, reporter, meteorologist and amateur puppeteer here with the latest weather report. It looks like it's going to be a beautiful day in Smartyville. Plenty of sunshine and only a 33% chance of precipitation, which in this case means rain.

[A]

Ah, now that's what I like to here. But smarty pants, do you know what 33% means? Well, in case you don't, let's say I go to a pizza parlor and order three slices, two cheese and one with pineapples. Which part is 33% of my order? Well, since 33% is the same as 1/3, then one slice is 33% of the order. Now let's say the one pineapple slice represents rain. Then the two cheese slices would represent rain. No rain. That's 66%. I like those chances. And by the way, I would only eat 66% of the pizza because I do not like pineapples on my pizza.

[B]

Oh, but you are mistaken.

[A]

Really? You like pineapples on pizza?

[B]

No, not the pineapples, the percent of rain.

[A]

Oh, Smartypants, what do you think? I certainly don't think it'll rain.

[B]

Ha. I was right.

[D]

Ah, and so was Chet Nickerson, meteorologist.

[A]

Hold on. How can you both be right? Chet, you said it probably wouldn't rain here.

[D]

Not true. Tell me, trustee, when you hear a weather forecast, do you know what it really means?

[A]

Uh, I guess not. Smarty pants. What does a weather forecast really mean? And how do meteorologists predict the weather in the first place? And how often are they right? It's time for another whiff of science.

[D]

And history on who smarted, who's smarted, who's smart. Is it you? Is it me? Is it science or history? Listen up, everyone. We make smarting lots of fun on who's smart and.

[A]

Well, smarty pants, it seems to be raining on our picnic, even though it was supposed to be sunny.

[D]

Hey, now, I did say there was.

[B]

A chance of rain, and I Warned him first.

[A]

Right. I'm here with two party crashers, a weather fortune teller named Virga, who is apparently named after a type of rainstorm.

[B]

Yes, my parents knew I'd be a great forecaster someday.

[A]

And news, sports, and weatherman Chet Nickerson, who gave us a lousy forecast.

[D]

How dare you? Trustee. I think someone needs to learn a thing or two about meteorology.

[A]

Mm. Right. Don't people say it's the only profession where you can be wrong all the time and still get paid?

[D]

Oh, trustee, that is way off the mark. It actually might surprise you, but meteorologists are right way more often than you think.

[A]

Oh, really? Well, let's take a step back and start with a basic question. What is a meteorologist, and why is the study of weather called meteorology? Smartypants, Is it because A, forecasters once used meat to predict the weather.

[B]

B.

[A]

Ancient forecasters thought meteors turned into raindrops? Or C meteorology comes from a Greek word meaning a thing high up. If you said sea, you're right. The Greek word meteoron refers to anything high in the sky, including thunderclouds and meteors. Now, for bonus points, can you guess who made that term famous? Is it, A, the Greek philosopher Aristotle, B, the Greek ruler Alexander the Great, or C, the Greek mythological God Zeus? If you said C, you picked the Greek God of weather. But the correct answer is A. Aristotle.

[B]

Oh, I love Aristotle. He was so smart.

[A]

Aristotle was very smart. But his book on weather, considered the first of its kind, contains a lot of errors. For example, it says the Earth is at the center of the universe with three moving layers above it. Water, air, and fire. Aristotle said the Earth exhaled vapors to create weather. Some ideas in Aristotle's book came from ancient Egyptians and Babylonians before him, and reflected weather and climate beliefs of Aristotle's time, which was more than 2,350 years ago. So, smarty pants, about how long do you suppose it took for scientists to prove Aristotle wrong? 75 years, 500 years, or 2000 years? Unbelievably, the answer is 2000 years.

[D]

That's incredible, but true. Until the 1600s, Aristotle was the weather authority. Of course, now we know the Earth is not the center of the solar system, never mind the universe. And there's no fire above the air. But air motion does create weather. The sun doesn't hit every part of the Earth at the same time, so it heats air unevenly, making it move about with some assistance from the Earth's rotation and the moon and sun's gravitational forces. This movement mixes Hot and cold air, along with vapor from oceans and other bodies of water, creating clouds and eventually rain, hail, or snow. With this knowledge of how weather forms, meteorologists like me can forecast it. Though we still need a little help.

[B]

Yes, from hogs.

[A]

Hogs? Wait, how did hogs end up here? We didn't invite hogs to the picnic.

[B]

Oh, I bring them everywhere I go. If hogs make squeal, then it's gonna be windy.

[A]

No, smarty pants, trust me. Meteorologists do not rely on hogs. What they do use to forecast the weather is what if, you know, shout it out. In the meantime, here's an audio hint. That's right. They use a balloon.

[D]

Well, not just any balloon, but a special weather balloon. In fact, at least twice a day, one of the world's leading weather organizations, America's national oceanic and Atmospheric Administration Organization, or NOAA, sends balloons into the air from nearly 100 different locations. Each balloon has sensors for air pressure, temperature, humidity, wind speed and wind direction.

[A]

And here's something else they use. Know that sound? It's radar.

[D]

Yes. Radar uses radio waves to detect nearby precipitation, cloud rotation, wind strength, wind direction, and more. And other electronic monitors, and even human volunteers send meteorologists information about current conditions in their area. Since meteorologists know the direction the air is moving, if they know it's raining in one location, they can predict where that rain will be one, two, or several days later.

[A]

There's also a tool that lives in outer space. Do you know what it is?

[D]

Did you say a satellite? Satellites give meteorologists like me the big picture. Some satellites capture images of the Entire Earth every 30 seconds so you can see where all that weather is coming and going.

[A]

And then all this information from radar, satellites, weather balloons, volunteers, and more is brought together and analyzed using one of.

[D]

But not just any computer. A supercomputer. The Supercomputers used by NOAA meteorologists are nearly 6 million times more powerful than the computer or tablet you have at home. These supercomputers use big mathematical equations, weather history and analysis of current weather conditions and air movement to predict what will happen next. But the supercomputer's forecast models are not always perfect. Most times they still need people with expertise, like me, geologists to tweak them and come up with a far more accurate forecast. You know, like the one I gave today.

[A]

But you said there was only a 33% chance of rain, and now it's pouring.

[B]

You should have trusted the candle.

[D]

Actually, trusty, my forecast was right on the money.

[A]

How smartypants. I think we deserve some answers right after this quick break.

[E]

The Pinkalicious and peterrific podcast is back with brand new Pinkatastic episodes. Sing and dance along with Pinkalicious, Peter and their friends as they go on musical adventures around Pinkville starting February 13th. You can listen to the new season of the Pinkalicious and Peterriffic podcast on pbskids.org or wherever you listen to podcasts.

[C]

As a trusty narrator, I've taken the smarty pants on countless adventures. I'll do anything for the fans, but off mic, I prefer to keep my adventures in the safe space of my own backyard. However, even a homebody like me can't avoid the unexpected chaos that comes with family life. Take last week for example. My niece was staying with me when.

[A]

She came down with a nasty cold.

[C]

In the middle of the night. I couldn't leave her alone to get medicine. And that's when I remembered Doordash is there for you. Whatever you need, whenever you need it. With a few taps on my phone.

[A]

I had cough syrup and tissues delivered.

[C]

Right to my door. Doordash saved the night and my niece was back to her energetic self in no time. Oh, and did I order a little ice cream for myself. Yes, I did, and Doordash brought it right to my door. So while I may not be the biggest fan of real life adventures, I'm.

[A]

Grateful that Doordash is always there to.

[C]

Help me navigate life's little emergencies. When life happens, get a little order delivered with DoorDash order now. Hey smartypants, trusty narrator here. Do you love music as much as I do, but find learning how to play it a little confusing? I sure did. When I was a kid taking piano lessons, music sometimes felt like a mystery.

[A]

I could press the keys, but I.

[C]

Didn'T always understand why it worked and that made it hard to learn. That's why I love what my friend Will has created. Music With Will is a live online music program for musically curious kids aged 7 to 12. Instead of just copying songs, kids discover how music actually works in a playful, creative, aha moment kind of way. Will was home educated himself and music felt like a black box to him growing up. After nearly 20 years of teaching, he built a program he wishes he'd had, using ear first learning with singing, listening and pattern spotting. No musical background needed at all. There's two live 60 minute lessons every month, recordings you can access anytime, and tons of flexibility. Parents and kids are loving how this is unlocking musical potential, and to get you started, Will is offering the smarty fans. 10% off the already very low monthly price and you even get a 14 day free trial so you can see how awesome it is before you pay a thing. I can tell you there is no better deal for awesome kid centric music lessons anywhere. Check it [e-mail] WhoSmarted that's musicwithwill.com WhoSmarted.

[A]

Now back to WhoSmarted Smarty Pants. As I stand here in the pouring rain getting soaked, tell me how much should you trust a weather forecast? Take your typical 5 day prediction. How often do you think it's wrong? Most of the time?

[C]

Half the time?

[A]

Once or Twice? According to NOAA, a five day forecast today can accurately predict the weather 90% of the time. That means it's wrong only once out of every 10 times and a seven day forecast is 80% accurate. Predicting weather farther out from that is more dicey. If you're looking at a 10 day forecast, it's only accurate half the time. Or 50%.

[D]

You know, people love to focus on our mistakes, but it's amazing how often we're right. The atmosphere is huge and complex, and any little thing can change the direction and power of a potential storm. Sometimes it's just impossible to catch everything that's going on, but we're getting much, much better at it. And forecasts today are far more reliable than they were just 10 years ago.

[A]

Except today, when you were wrong.

[D]

Was not.

[A]

Was too. You said there was a 33% chance of rain, which basically means it probably won't rain. But now it's pouring and I'm drenched.

[D]

Aha. See, that's where you're wrong. Many things go into a weather forecast, including geography. And that's where expert meteorologists like me are truly needed. When you hear a percentage, it's not just the odds as to whether you'll get bad weather. It's actually the result of a mathematical equation. And that equation is the area where the rain might happen. Like your town times a meteorologist's confidence, it will occur. Sometimes I'm only a little confident it'll rain over the entire area. And in that case, you might be surprised by a storm. And here I was 100% sure it was going to rain, but only in 1/3 of Smartyville, and 1/3 of 100% is 33%. And I was right. Unfortunately, the 1/3 of Smartyville where the storm hit includes this park where you decided to have your picnic and puppet show. Should have had it across town near the dog run. It's not raining there.

[A]

I'm not hosting a party at a dog run.

[B]

Yeah, bad idea. But I knew it was going to rain last night. How? The moon. It was pale with fuzzy edges.

[A]

What makes you think that's a sign of rain?

[B]

The Farmer's Almanac from 1837.

[A]

Ah, yes, that makes sense. You see, smarty pants, back in the 1800s and earlier, people didn't have phones, TV, the Internet or radio to give them the latest forecast, so they relied on superstitions and weather folklore, some of which appeared in books like the Farmer's Almanac. These things seem to work like they did today, but there's not much science behind it. For a more accurate forecast, stick with the meteorologists.

[D]

Exactly. And look, it's clearing up. Time for a puppet show. Right after I grab a quick bite. What do we have to eat?

[A]

Pizza. Except it's all soggy.

[B]

No, that's just from the pineapples. Who wants some?

[D]

Oh, I'm good.

[C]

Same. A big shout out to super smarty.

[A]

Fan Ellie in Exeter, New Hampshire, who thinks the show is funny and even.

[D]

A little bit of a game.

[A]

I also hear that Chet Nickerson is your favorite. Well, he's one of my favorites too.

[C]

Keep on smarting, Ellie.

[A]

This episode Weather was written by Dave Breezy Beaudry and voiced by Olivia Light Drizzle Davis, Adam downpour Davis and Jerry Colber. Technical direction and sound design by Josh Hailstorm Hahn, who Smarted is recorded and mixed at the Relic room studios. Our associate producer is Max Cold Front Kamasky. The theme song is by Brian Snow Flurries Suarez. Lyrics written and performed by Adam Tex Davis, who Smarted was created and produced by Adam Tex Davis and Jerry Colbert. This has been an Atomic Entertainment production.