How far away is lightning 3 seconds?
The Correct Method to Calculate Lightning Distance
| If thunder is heard | The lightning is . . . |
|---|---|
| 15 seconds after a flash | 3 miles away |
| 20 seconds after a flash | 4 miles away |
| 25 seconds after a flash | 5 miles away |
| 30 seconds after a flash | 6 miles away |
How far away is lightning in KM?
Sound travels one mile every five seconds and one kilometer every three seconds. Therefore, if you want to find out how far you are from lightning, divide the number of seconds by 5 if you want the answer in miles and divide it by 3 if you want the answer in kilometers.
Does thunder happen at the same time as lightning?
Thunder and lightning occur at roughly the same time although you see the flash of lightning before you hear the thunder. This is because light travels much faster than sound.
Does counting seconds after lightning work?
A general rule of thumb to know how far off a bolt of lightning is when you hear thunder, if you count the number of seconds between the flash of lightning and the sound of thunder, and then divide by 5, you’ll get the distance in miles to the lightning: 5 seconds = 1 mile, 15 seconds = 3 miles, 0 seconds = very close.
Is a bullet faster than lightning?
That is faster than a bullet fired from an assault rifle- 1000 metres per second.
How long does it take to hear thunder after lightning?
The first 30 is 30 seconds. If it takes less than 30 seconds to hear thunder after seeing a lightning flash, the probability of being struck by lighting is great because the lightning is within 6 miles of your location.
How long does Lightning follow after Thunder?
The National Weather Service recommends taking cover if the time between the lightning flash and the rumble of thunder is 30 seconds or less, which indicates the lightning is about 6 miles away or closer.
Does lightning and Thunder happen at the same time?
While thunder and lightning usually occur at the same time, light travels faster than sound so lightning is seen before thunder can be heard. Thunder is the rumbling sound that is heard during thunderstorms. It is caused by the fast expansion of gases in the electrical charge of lightning in a thunderstorm.
How do you measure the distance of lightning and Thunder?
Just count the number of seconds that pass between a flash of lightning and the crack of thunder that follows it, then divide that number by five. The resulting number will tell you how many miles away you are from where lightning just struck.