Distance until thunder

By temperature, the sound will change the speed transmitted through the air. Faster about 0.6m each time you go up 1 ℃.

Since we calculate on the basis of the temperature in this app, it is fairly accurate. If it annoying to type the exact, approximate temperature does not matter. It does not change only about about 60cm in the difference of 1 ℃

It might be interesting to not only lightning, even to measure the distance, such as fireworks.

Supports not only meters, km, feet, mile, also yard, it also supports to Fahrenheit as well as Celsius.

In addition, lightning is so there is a possibility of lightning, if within 14 km. Without careless to say because you distant, rumbling sound that when you hear, let's evacuate to a safe place in a hurry.