Canfield Fair Weather History & This Year's Forecast

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It's time once again for the Canfield Fair, a week that, for many, serves as the unofficial end of the summer season. Of course in late August and early September it's typically still pretty warm but there have been many exceptions. I looked back at the weather records from 1965-2017 (from official observations at the Youngstown-Warren Airport).  Click on each image to enlarge. The warmest fair during that period was in 1973, although 2015 was a close second. 2016 was pretty average and last year was quite comfortable overall. 2017 was the coolest fair since 2010. The coolest overall during this period was in 2006.

THIS YEAR'S FORECAST

The fair will open on a very hot and humid note Wednesday with expected highs near 90. Showers and thunderstorms will threaten by early evening and any storm could be on the strong side. Don't walk your dog at the fair Wednesday afternoon. Concrete and asphalt temperatures will be much too hot for our furry friends.Much cooler and more comfortable air will be here Thursday. Highs will be in the mid 70s with some late-afternoon and evening sunshine. A beautiful evening, in fact. But dewpoints will climb by the weekend. While Saturday-Monday will not be oppressive as the last couple of days, it'll still be toasty with dewpoints this high.Overall the days with the lowest weather impacts will be Thursday and Friday. Saturday will be dry but warm and muggy. Our forecast includes a chance for spotty showers and storms Sunday and Monday.

I'LL BE IN THE WFMJ TENT SATURDAY FROM 10AM-2PM. STOP BY AND SAY HI!

 

Meteorologists Are Very Accurate (Yes, Really)

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I've heard a version of this joke roughly 7,234,519 times in my life. The most common iteration is "must be nice to be wrong half the time and still get paid!". Ugh.  All I ask is that people be original when half-insulting me and my profession!The truth is, meteorologists...those on TV, in the private sector, at the National Weather Service, are really good.  Weather forecasts have never been more accurate. The lead time on tornado warnings is (on average) around 13-15 minutes. The accuracy of hurricane track forecasts is excellent.But of course, we aren't always right. And never will be. A lot of people have trouble with this. I get it. If your picnic/graduation/golf outing is ruined by weather, it's maddening. Especially if the forecast led you astray.

Let's pull back the curtain on our internal accuracy numbers

I take accuracy very seriously and it drives me crazy when a forecast is off. Especially if it's an impactful situation like a snow storm or severe weather.  If it's August and my forecast high was 81 and it ends up being 86 it irks me but that kind of "bust" doesn't really impact anyone significantly. That said, temperatures are the easiest thing to track so let me show you how we are doing so far this year. I keep very detailed records on our temperature accuracy dating back 5 years. The spreadsheet I use is pretty slick; I enter the forecast highs and lows as well as the actual observations and the spreadsheet produces easy-to-read accuracy numbers.Let's dig into a few of these numbers. So far in 2018, our high temperature forecast for the following day is within TWO degrees 70% of the time and within 3 degrees 84% of the time.Skip ahead to DAY 7: We get the temperature right within 2 degrees 38% of the time and within 5 degrees 64% of the time.  Not bad for 7 days out and I suspect these numbers would surprise some.

Meteorologists vs. Atheletes

Professional athletes are incredible and I would love to have even a shred of their talent. But here's what they aren't doing: predicting the future! Let's look at the "success" rate of athletes at the top of the major sports.

MLB

Mookie Betts of the Red Sox leads the majors in hitting right now with a batting average of .350. That's a very impressive number but means he is still failing to get a hit 65% of the time! If my forecast busted 65% of the time i would be in a world of hurt. Yet in baseball this is succeeding at very high level.

NBA

Clint Capela of the Rockets led the league in field goal percentage last season at about 65%. A great number but below our rate of getting the temperature right within 2 degrees (for the following day) of 70%. And again we are predicting the future!

NFL

Drew Brees led the NFL in completion percentage last year but still threw an incompletion 28% of the time. If I failed on snowfall forecasts at a rate of 28% I think I'd need to reconsider my career choices.

In Conclusion

The point of this post is not to brag. We're accurate but I'd like to be a LOT more accurate and I am always trying to get these numbers higher. Every "bust" is a learning opportunity. Meteorologists who don't learn from their mistakes don't typically have a long career in this profession.  This can be said of nearly every profession but it's especially true in a line of work that places a premium on accuracy. Sometimes I compare our job to referees/umpires. Most referees at the top of their profession get FAR more calls right than wrong. Yet their reputation is that they "are all blind" and what not. It's especially bad if they blow a very important call at the end of a very big game. A ref could have gotten every call right up until that point but it doesn't matter if he affected the outcome of the game by making a high-profile screw up. In our job, all these accuracy numbers are great and everything but in January if I say there will be 1-2" of snow and there ends up being 10" and people's days are severely impacted, it's very easy for the old "meteorologists are always wrong" cliches to come out. It's part of the reason I don't sleep much before big storms! That's ok...I love it. Couldn't imagine doing anything else!

Debunking The Myth Of Heat Lightning

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There are many, many weather myths...nuggets of "wisdom" that have been passed down from generation to generation. Many people hold on to these tightly; their dad or grandma or great aunt insisted these things were true! Believe me, I understand. My grandmother was largely responsible for getting me interested in weather and many of her weather-related anecdotes and pearls of wisdom, as it turns out, were not exactly filled with scientific rigor. And that's ok! Some weather myths are harmless fun and others (such as a few related to tornado safety) can actually be dangerous.At this time of the year, one of the most common weather myths that gets some play is "heat lightning". This is a term that many people associate with warm summer evenings in which you can see lightning in the distance but don't hear any associated thunder. Often the sky directly overhead is clear. The general idea behind heat lightning is that, well, it's really warm and sometimes that just makes lightning form. I guess?Well the truth is, lightning is lightning and it all forms by the same processes.  An electric charge is formed in a tall cloud by chunks of ice (some big, some tiny) bumping into and rubbing against each other.  When the charge grows large enough, a giant spark-lightning- occurs between positive and negative charges.  That discharge can occur within a cloud, from cloud-to-cloud or from the cloud and the ground.

WHERE'S THE THUNDER?

All lightning produces thunder, it's just that sometime we can't hear it. Lightning can be seen from as much as 100 miles away. But thunder can usually only be heard from a distance of about 10 miles away.The curvature of the earth plays a role. A distant thunderhead may be mainly below the horizon from your vantage point. But the lightning at the top of the storm may still be seen.Finally, don't forget: every time someone spells lightning "LIGHTENING", a meteorologist's blood pressure ticks upward.