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As the engines rev up, drivers are paying attention to the vain on the track and also the weather problems at the Indianapolis engine Speedway. Lot like racing, points can adjust in a matter of moments.

You are watching: Does indycar race in the rain an initial Warning ar Meteorologist Maci Tetrick speak to Matt Jaskol and Dewayne Ellwanger, proficient race spotters, on the effects that weather has and what deserve to be intended on Sunday front of the Indy 500.

Ellwanger spotting a gyeongju

Both males are spotters because that Andretti Autosport. Ellwanger has functioned for IndyCar because that 33 years, and currently spots because that driver Alexander Rossi. Jaskol has actually spotted for three years, right now for Marco Andretti. You may additionally recognize him together a current driver in the Nascar Xfinity series.

Jaskol spotting a gyeongju

The two space knowledgeable about racing both on and also off the track, and they pat a an important role in the success of your driver.

"There"s two spotters, one subsequently one, one consequently three," describes Jaskol. "We space the ones that actually speak to the driver around the track, come let them know what"s walk on. Girlfriend know, with chauffeurs doing nearly 230 miles an hour, things happen fast."

Part of what"s continue is changing weather, i beg your pardon can existing a brand-new set of obstacles each day in practice prior to the race.

"It can be 40, 50 levels one day, 90 the next," Ellwanger said.

Each team has designers constantly checking the weather and also tuning the engines.

Ellwanger spotting and also talking come his team throughout a gyeongju

"Fuel mileage is among the biggest things about how you success or shed this race," Jaskol explained. "So the engine manufacturers, Honda, Chevy, they’re looking way in advancement with weather, to see exactly how they can optimize the fuel mileage.”

Cool weather makes a car run faster, while warm temperatures make for a greasy track, and also lower mileage. Teams have the right to run v either of this conditions, but it’s advantageous for problems to continue to be constant.

“You hope to have the same conditions in practice as what you’ll have actually for race day," noted Ellwanger.

Even on gyeongju day itself, weather can adjust from one lap come another, or also one revolve to another. A lap in ~ the Indianapolis motor Speedway is two and a half miles, for this reason each component of the track can look and also feel different.

“You deserve to have the sun directly over the track, and also all four corners will have a variance of degrees from anywhere, 30 to 35 levels difference," Ellwanger explained. "Turn one, for instance, can be 130 degrees in the direct sunlight, and also turn four, i beg your pardon is just fifty percent a mile down at the various other end, have the right to be 30 levels different.”

Even if the wait temperature feels comfortable come fans, the asphalt ~ above the track proceeds to warm up on clear days. A warm track can mean greasy tires and a slide car.

Weather can impact how car perform, and also can also influence a driver both mentally and physically. Brand-new Aeroscreen canopies ~ above IndyCars mean less air circulation inside the car, for this reason drivers could be sitting within a car well end 100 degrees - quite an endurance workout through a long race.

“Average heart price for one IndyCar driver is 175," Jaskol said. "That is greater than some athletes doing a triathlon.”

Jaskol in the number 8 car during a 2007 race at IMS. He to know it can obtain hot in the car!

Teams hope for a gyeongju day through some cloud sheathe to help keep track temperature down, but they’re not trying to find an overcast, rainy day.

“On the oval, you can’t race in the rain," Jaskol reminded. "Because these cars space so fast, and also they’re yes, really on a razor’s edge, they are very certain about making certain the monitor is totally dry.”

The gyeongju goes ~ above rain delay, also if there are just a couple of sprinkles in one turn while the rest stays dry.

Rain alters the composition of the track, which has miniscule grooves, or holes, on the surface. From practice, the grooves fill v rubber, which add to grip to the track and is far better for racing.

“If we get some really heavy rain, that pretty much washes all that rubber out of those little grooves," proclaimed Ellwanger.

This deserve to be problem when chauffeurs practice top top a monitor with great grip, and it is all of sudden gone throughout the race.

“You can go back in background and see choose a really hefty rain, and a rain delay, then it goes back to green and also cars crash, since some that the drivers don’t compensate because that the lack of tight on the track,” stated Jaskol.

After a rain delay, over there can additionally be a readjust in humidity together the race resumes.

“The heavier the air, the an ext drag it creates on the car, so the slow you go," Ellwanger explained.

More traction also means using more fuel. Teams will tell drivers to conserve an ext fuel and draft behind one more car. 

These decisions are being made as cars speed about the track. Sometimes, speed have the right to be altered additionally based on wind.

“Wind, wind! can really affect the race, and become dangerous, if a driver’s not paying attention, if the team not offering him good information," states Jaskol.

A headwind top top the prior straightaway, yet a tailwind ~ above the back straightaway, have the right to lead to a difference of a few miles every hour. Beginning a revolve slightly faster or slower 보다 the lap before, based on wind, deserve to be terrible to a driver.

“Even just in current years, a few world champions, considered some the the finest drivers in the world, crash here at the Indianapolis motor Speedway, since of wind." Jaskol said. "Because the wind gusted and pushed the car, and also they didn’t expect it, and they struggle the wall.”

As a meteorologist, that course i joked that I’d try to crank out a nice forecast for gyeongju day.

“Give us in between 75 and 80, irradiate winds, a tiny bit of clouds in ~ time, if you might make that happen for us, we’d really appreciate that,” was Jaskol"s request.

"No humidity, and cool breeze," added Ellwanger.

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While meteorologists can not actually change what the weather will be on race day, teams deserve to go to good lengths come adapt. The mix of temperature, wind, air density, and also rain, for sure no 2 races space the same, and make the winner’s expedition to win Lane that much sweeter.