Weather delay

A weather delay means to put something off or postpone it until later, or to cause something to take longer or to be late, Usually for lightning or rain.

History
Unlike any other sport, NASCAR is far too dangerous to try and race in inclement weather. The cars drive at too high of speeds and can gain no traction on a wet surface.

If rain begins to fall during the middle of a race, the race will be put on hold until the precipitation ends and the track is able to be dried.

A passing shower may just lead to a short break in the race, but a persistent, heavy rain could cause the race to be suspended for hours, or even until the following day.

In 2014, the Daytona 500 was interrupted by weather with a rain delay that lasted for six hours and 22 minutes, the longest rain delay in Daytona 500 history. During the delay, fans had to be evacuated from the grandstands when the National Weather Service issued a tornado warning for the track.

Once the rain ends and it appears as though there will be a long stretch of dry weather, NASCAR will begin to dry that track with their specially designed Air Titans.

Drying the track’s surface to the point where it is safe to race again takes much longer to accomplish on bigger tracks, like the 2.5 mi Daytona International Speedway, when compared to smaller tracks, such as the  0.533 mi Bristol Motor Speedway.

Inception
They can either wait out the storm and run it at night, declare a winner if the race is NaN% complete or if it hasn’t ran the necessary amount of laps or began, they can move it to the next day. There are certain tracks that don’t have the lighting capacity to run a night race and that can lead to races being moved to Monday, if it’s a Sunday race.