how long what it take for you to hear lightning
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lightning strikes a tower 4 km away. how long after the strike will you hear the thunder? the speed of sound is 344 m/s December 15, 2009 by Sara. Math. In a lightning storm, the number of seconds between the flash and the bang varies directly with the number of miles you are from the lightning. It takes 15 seconds for the thunder sound to reach you from lightning that is 3 miles away. If the thunder sound reaches you in 1 ... November 4, 2012 by M.
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Planning ahead Research has shown that the most successive flashes are within 6 miles, which means that you should have reached a safe place if lightning is less than 6 miles away. However, lightning may strike up to 10 miles away from the parent storm. If someone is struck by lightning, call 911 immediately.
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Question: A common way to measure the distance to lightning is to start counting, one count per second, as ... A common way to measure the distance to lightning is as follows: start counting, one count per second, from the moment you see the flash; stop counting when you hear the thunder; divide the count by five to get the distance in miles to the lightning flash. Use this information to estimate the speed of sound in m/s.
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Lightning Lightning can strike as far as 10 miles, and in some extreme cases up to 20 miles, from the area where it is raining. That is about the distance you can hear thunder. If you can hear thunder, you are within striking distance. Seek shelter immediately.
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Lightning Safety Therefore, if you can hear thunder, that IS YOUR WARNING that you are within striking distance. Seek safe shelter immediately. Remember this lightning safety rule...When thunder roars, go indoors and stay there until 30 minutes after the last clap of thunder.
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Lightning The charged regions in the atmosphere temporarily equalize themselves through this discharge referred to as a strike if it hits an object on the ground, and a flash, if it occurs within a cloud. Lightning causes light in the form of plasma, and sound in the form of thunder. Lightning may be seen and not heard when it occurs at a distance too great for the sound to carry as far as the light from the strike or flash.
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- Thunder travels at the speed of sound (1,090 feet per second) Therefore, it takes about five seconds to travel a mile. A single bolt of lightning can discharge about 100 million bolts of electricity and can travel as far a 10 miles from a cloud.
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What is Thunder? Count the number of seconds between the lightning. flash and the sound of the thunder, and divide that. number by five. That number is the number of miles the. storm is away from you. If you can hear thunder, the storm is close enough that.
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Lightning Distance Calculator The delay between when you see lightning and when you hear thunder occurs because sound travels much, much slower than light. Sound travels through air at about 1100 to 1200 feet per second (our default is 1150). That is a little more than one mile per five seconds. This approximation will give you a good idea of how far away the lightning was.
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- The lightning and thunder sound occur at the same time, but an observer will experience a delay in hearing the thunder depending on the distance from the lightning strike.  …  Light travels at slightly less than 3.00 x 106 kilometres/second or around 1.88 x 106 miles/second. That is fast.
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- If you can hear thunder, you are close enough to be struck by lightning! Myth: It’s not raining here, and skies above me are clear, therefore I am safe from lightning. Fact: Lightning can strike many miles away from the thunderstorm. If storms are in your area, but skies. happen to be clear above you, that certainly does not imply you are safe from lightning. Though these. “Bolts from the Blue” are infrequent, lightning strikes 10 to 15 miles away from the storm are not out of the.
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Flash Facts About Lightning • If you can hear thunder, you are within 10 miles (16 kilometers) of a storm—and can be struck by lightning. Seek shelter and avoid situations in which you may be vulnerable. • Use the 30-30 rule, when visibility is good and there is nothing obstructing your view of the thunderstorm.
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What is the approximate distance of a thunderstorm if you notice a three-second delay between the flash of lightning and the sound of the thunder? Your estimate of 5 seconds per mile is the one I always use during a storm. Let's see how it stacks up: 1 mile = 5,280 feet 1 mile / 5 seconds = 0.2 mile per second = (0….2 x 5,280) = 1,056 feet (321.9 meters) per second. The speed of sound at standard temperature and pressure is listed as 343 m/s.
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How far can a storm be to actually hear thunder? It takes about five seconds for the sonic boom to travel one mile, so if you see the sky illuminated by a streak of lightning and count 10 seconds until you hear the low rumble of the thunder, the storm is about two miles away. Source(s):
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Lightning: Questions and Answers In comparison, the sound of thunder travels at about 1100 ft per second or about 750 miles per hour. While you see the visible flash of lightning almost instantaneously, the sound of the thunder travels at a speed of about 1100 feet per second or about 1 mile in 5 seconds.nswer: Lightning is a giant spark of electricity. A typical lightning flash contains about 30,000 amps and 300 million volts. This compares to a standard household current of 15 amps and about 120 volts. Typically, a lightning flash is only 1 to 2 inches wide.
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- The Science Behind Determining How Far Away The Thunder Storm Is. Lightning and thunder take place at the same time, but light and sound travel to us at different. speeds, so they reach us at different times. Light travels at 186,000 miles per second, so it only. takes a fraction of a second to reach us.
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Debunked: 5 Lightning Myths That Could Kill You People are able to hear thunder from about 10 miles away, Jensenius said. But any number of factors can interfere with the warning. “In many cases you can’t hear it that far because of background noise,” he said. “You won’t hear it if you’re near a highway or in a crowd at a fair or a ball game.
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Truth Test | Can you count the seconds between lightning and thunder to determine distance? It takes roughly five seconds for the sound of super heated air or thunder to travel one mile, so if you see a flash of lightning and count 10 seconds until you hear the thunder, you need to divide by five to determine this storm is roughly two miles away.
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- 4. Calculate the distance from lightning in feet or meters. Sound travels at a speed of about 344 meters, or 1,129 feet, per second. To calculate your distance from the lightning in meters, just round 344 down to 340 and multiply the number of seconds by 340. Let's say you counted 18 seconds. 2  To find your distance from the lightning in miles, divide 18 by 5 to get 3.6 miles. 3  To find your distance from the lightning in kilometers, divide 18 by 3 to get 6 kilometers.
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- 4. Calculate the distance from lightning in feet or meters. Sound travels at a speed of about 344 meters, or 1,129 feet, per second. To calculate your distance from the lightning in meters, just round 344 down to 340 and multiply the number of seconds by 340.
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How do I tell how far away a thunderstorm is? ( If you are frightened of thunder, it is useful to remember that by the time that noise has reached you, the really dangerous lightning strike has already occurred. Very roughly, the speed of sound in the lower atmosphere is 330 metres / second (or 1 mile / 5 seconds). If you observe the 'flash' of the lightning stroke, then begin counting (or timing) in seconds until the sound of the thunder just reaches you, using the relationships above will give a rough guide to the distance of the storm.
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Can you calculate how far away lightning struck by thunder? When you see the flash of a lightning bolt, you can start counting seconds and then divide to see how far away the lightning struck. If it takes 10 seconds for the thunder to roll in, the lightning struck about 2 miles or 3 kilometers away.
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Thunder: Lightning's Sound Waves If you heard thunder seconds after the flash, then the lightning was miles away. If the lightning was miles away, then you'll hear thunder after seconds. Keep in mind that this method doesn't always tell the whole story about the lightning flash you just saw. Read the next section to find out why.
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If you can hear thunder are you close enough to get struck by lightng in a thunder storm? You can see the flash of lightning before you hear the sound because light travels much faster t … han sound. Sometimes the lightning is obscured by the clouds so you do not see the flash but you hear the sound, so you might think you heard the sound first. Answered. In Thunderstorms and Lightning.
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Lightning flashes and strokes Most commonly, the lightning current ceases in about a millisecond for a given stroke, but sometimes there is a continuing current on the order of 100 amps following one or more of the strokes. This is called hot lightning and it is the cause of lightning fires according to Uman.