how to calculate the heat index

Have you ever wondered what the formula is to determine the heat index? You might be surprised…

Heat Index = -42.379 + 2.04901523T + 10.14333127R – 0.22475541TR – 6.83783×10-3T2 – 5.481717×10-2R2 + 1.22874×10-3T2R + 8.5282×10-4TR2 – 1.99×10-6T2R2

Who knew it was that complicated? If you want a full explanation of all those variables, go here (if you dare): It’s Not the Heat, It’s the Humidity. There are a lot of assumptions built into that equation. Basically, the heat index is different for everyone. That formula is based on an average of someone who is 5’7″ and weighs 147 pounds. The equation even accounts for how much clothes coverage you have — it assumes 84% based on “long trousers and short-sleeved shirt”. Trousers? I don’t wear trousers… I’m not British!

There should be a separate heat index for the South. On the worst of days, we don’t need a number — it should just say “STAY INSIDE!”. Because there’s days where you step out the door and you’re instantly sweating. I don’t know how that’s possible, but it’s a thing. When you can feel your skin start to burn within seconds, it’s just not safe. On those days, just stay inside.

What to do about this hot weather?

Everybody likes to talk about the weather, but nobody does anything about it…

And somebody really should, with this current “heat dome” of heat and humidity. But, nothing…

I would, but unfortunately, our R&D department is woefully underfunded. It takes a substantial amount of money to build a weather dominator-inator. You can’t just go to the local store and buy the parts you need since they aren’t invented yet!

Meanwhile, while we wait on the millions in donations we need, we’ve had an idea before that should be considered. For places where the heat is oppressive — say, anywhere with a heat advisory in effect — the government could provide free ice cream sandwiches. It’s really a win-win solution. It would boost morale of the citizens (voters), and the politicians providing this would gain some popularity and be responsible for something good. I know, the issue is how to pay for it. The cost wouldn’t have to be great, if they leverage their buying power to get discounts (which is entirely possible). But they’d have to cut out the red tape on the middleman and not enrich themselves, which is most unlikely. After all, just this year, DOGE and Elon Musk with his chainsaw have cut thousands of jobs, slashed billions from budgets, which could potentially do some good (although the haphazard way it was done was incredibly inefficient and irresponsible), yet the current budget bill will lead to greater debt. So what exactly is going on where they can save billions of dollars yet spend trillions more? The math doesn’t add up. They haven’t told us where all that money is going.

Sorry, got on a political rant there. Our government is inconceivably wasteful, so no free ice cream sandwiches. In fact, your groceries now cost more, despite the campaign promise of Donald Trump to bring grocery prices down on day one. Instead, everything costs more.

Oops, started ranting again. But while I’m on the topic (not really), here’s a random pivot to chew on: I saw an interview with someone who had traveled to various other countries, and he said the main difference in politics in America is that we tend to blame the “other party” while in other countries they hold their elected officials currently in office responsible for what’s wrong. I can see that…

Enough ranting. It’s hot outside, and I sure could go for an ice cream sandwich… So I’ll go get one myself. I don’t depend on politicians to make my day better. (That would be a disaster!) We all have the option to do things to make our day better.

Is there anything you will do today to make your day better?

Snow is more interesting than you think

Have you ever thought about why snow is the way it is? Snow is fluffy water. It happens when the temperature is below freezing, but if you put water in a freezer it turns into ice. It’s a good thing that freezing precipitation isn’t ice, because that would be painful and destructive. So for whatever reasons, we get snow instead of falling ice. That’s very fortunate! Imagine if snow was ice crystals instead…

Why is that? Precipitation that freezes becomes hail, sleet, or snow. How? Obviously temperature is a factor, yet in all cases it’s cold enough to freeze the water. Could a snowstorm cause the snow to float long enough via updrafts to form hail?

I don’t have all the answers for that. But I’m thankful that snow is not ice as it falls and that it’s fun to play in.

why southern weather makes no sense

In this video (below) there’s a person scheduling the weather for the South (meaning southern United States, from part of Arkansas to Florida). Attending this meeting are the four seasons: winter, spring, summer, and fall. What will happen as they try to figure out what kind of weather the South should have this year? (This is comedy, if it isn’t obvious.)

While that’s exaggerated, there is some truth to it. My favorite part is winter planning a few snowflakes to shut everything down. That actually does happen. I know people in the up north don’t get it, but in the South there are very few snowplows or trucks to salt the roads. Also, southerners typically don’t have much experience in how to drive in snow, so there’s that danger. But it’s all okay, because snow is so rare here, so it’s a special occasion. I have a friend that grew up in the South, then moved to Colorado. She said most people there take snow for granted, because they see so much of it. Many of the people there didn’t have any interest in throwing snowballs or building a snowman (or snow castles or snow monsters, which deserves its own post).

While there is a lack of snow most of the winter, it also means much of the winter is somewhat mild. It does get below freezing at times, but that’s usually just for a day or two, then it’ll be back to the 60s by the end of the week, so you can return to shorts and T-shirts. The only bad part is the middle of summer, where extreme amounts of heat and humidity mix together for a rather unpleasant atmosphere. But it’s just two months that are really bad. The same people made a video about that, too:

If you haven’t experienced southern humidity, then you might not get it. There are summer days where you walk outside and within seconds you are sweating. Sometimes it seems like sweating starts instantly. I don’t know how quickly the body can respond to the change in temperatures, but that’s not something I particularly want to research. (I will add that I am extremely thankful for air conditioning!)

There’s a saying in the South that if you don’t like the weather, just wait a day or two and it’ll change. That is mostly true, except for July and August, where there’s a 99% chance of it being hot and humid every single day. So for those months, the weatherman’s job of making the forecast is easy — really hot, with a 20% chance of thunderstorms, almost every day.