how far away does lightning strike
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Flash Facts About Lightning Positive lightning is particularly dangerous, because it frequently strikes away from the rain core, either ahead or behind the thunderstorm. It can strike as far as 5 or 10 miles (8 or 16 kilometers) from the storm, in areas that most people do not consider to be a lightning-risk area. • During a thunderstorm, each flash of cloud-to-ground lightning is a potential killer.
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Thunder Using this difference, one can estimate how far away the bolt of lightning is by timing the interval between seeing the flash and hearing thunder. The speed of sound in dry air is approximately 343 m/s or 1,127 ft/s or 768 mph (1,236 km/h) at 20 °C (68 °F).
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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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Lightning Distance Calculator A typical thunderstorm is about 15 miles in diameter and people usually begin hearing the sound of thunder when the storm is about 10 miles away (the distance lightning can strike from its parent thunderstorm). According to NOAA, there have been confirmed strikes as much as 50 miles away from the thunderstorm.
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How Far Away Is Lightning? For metric-system conversions, follow this method: Sound travels at about 340 m/s, so multiply the number of seconds you counted by 340, and you'll know how many meters away lightning struck. A three-second count, then, would place the lightning strike about 1,020 m away, or roughly 1 km.
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The Science of Thunder The vertical extent of a CG lightning channel averages 3-4 miles (5-6.5 km) with a maximum height of about 6 miles (9.6 km). Most CG flashes originate in thunderstorms between 15,000-25,000 feet (4,500-7,600 m) above ground level in the mixed water and ice region.
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Flash Facts About Lightning Although some victims are struck directly by the main lightning stroke, many victims are struck as the current moves in and along the ground. • 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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Flash Facts About Lightning It can strike as far as 5 or 10 miles (8 or 16 kilometers) from the storm, in areas that most people do not consider to be a lightning-risk area. &#149 During a thunderstorm, each flash of cloud-to-ground lightning is a potential killer.t can strike as far as 5 or 10 miles (8 or 16 kilometers) from the storm, in areas that most people do not consider to be a lightning-risk area. &#149 During a thunderstorm, each flash of cloud-to-ground lightning is a potential killer.
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What is Heat Lightning? What you’re likely seeing is the light from a distant thunderstorm that is located at too great of a distance for the thunder sound to be heard. The sound of thunder rarely travels more than 10 miles. Other cases can be explained by the refraction (or bending) of sound waves by bodies of air with different densities.
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What causes thunder? First off, it’s impossible to have lightning without thunder and it’s impossible to have thunder without lightning. Heat lightning is nothing more than seeing lightning and not hearing the thunder, because the storm is too far away. Lightning is pretty darn bright and can be seen for tens of miles. Thunder is a compression wave and will dissipate with time and distance. Under excellent conditions, thunder can be heard about 12 miles away from the lightning strike. However most of the time conditions aren’t this good and we usually can’t hear thunder any more than about 5 miles away.
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How far can a storm be to actually hear thunder? Lightning can strike up to 16 Km (10 miles) from a thunderstorm so if im not mistaking since you can hear thunder another 10 miles from lightning, then im guessing you can hear thunder if a storm was around 20 miles away.
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- Child Safety Basics. 1  Lightning can strike even when a thunderstorm is 5 to 10 miles away. 2  About 400 people are hit by lightning each year. 3  About 3 to 10 children and teens die from lightning strikes each year.
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Heat lightning Heat lightning can also occur if cloud-to-ground lightning occurs very far away and the sound dissipates before it reaches the observer. At night, it is possible to see the flashes of lightning from very far distances, up to 100 miles, but the sound does not carry that far. In Florida, heat lightning is often seen over the water at night, the remnants of storms that formed during the day along a sea breeze front coming in from the opposite coast.
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Lightning Safety and Outdoor Sports Activities Stopping Activities. In general, a significant lightning threat extends outward from the base of a thunderstorm cloud about 6 to 10 miles. Therefore, people should be in a safe placewhen a thunderstorm is 6 to 10 miles away. Also, plan’s guidelines should account for the time it will take for everyone to get to safety. Here are some criteria that could be used to stop activities: 1  If you see lightning. 2  The ability to see lightning varies depending on the time of day, weather conditions, and obstructions such as trees, mountains, etc.
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Ponte Vedra Beach, Florida Also, compared to the state of Florida, Population Change of 4.5%, Davenport is about twice as large. Looking at population density in Figure 5 Davenport illustrates it has 957 population density which is the 2nd most of all the places in the area.
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- You can practice this with a clock to get the timing right if you want. Every 5 seconds between when you see lightning and when you hear the thunder is one mile. If you count 10 seconds between the lightning and thunder, the lightning struck 2 miles away. For further information about lightning and safety, visit the website of the National Lightning Safety Institute.
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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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- Outside 20 feet... the sound level in the water is probably the biggest danger. Lightning strikes generate up to 260 dB at 1 metre in the water (you could lose your hearing in one shot and the sound alone can kill fish). Even at 300 feet (100 metres) away this is still dangerous.
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Heat Lightning a Myth? Light from a lightning bolt travels outward at over 100,000 miles per second. The flash from a lightning strike occurring within 10 miles will reach you almost instantaneously. Heat lightning is known as such because thunderstorms spawning lightning often occur in the summertime when temperatures are at their warmest.
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Can you calculate how far away lightning struck by thunder? It is possible to figure out how far away a lightning strike is with some simple math­. Sound travels through air at the speed of sound.. Officially, the speed of sound is 331.3 meters per second (1,087 feet per second) in dry air at 0 degrees Celsius (32 degrees Fahrenheit).
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Lightning: Questions and Answers If it takes 10 seconds between the lightning flash and the thunder, the lightning flash was 2 miles away. For 15 seconds, the flash would be three miles away. Unfortunately, this method only works for the previous flash and does not tell you how close the next lightning strike will be.
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Where will lightning strike? Lightning begins with a leader. This stream of negative charge leaves the cloud and searches for a path through the air to the ground. (In rare cases, leaders start on the ground and move upward.) Though every strike is different, a leader may travel about 89,000 meters (290,000 feet) per second.
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- Horizontal lightning, or Spider Lightning, can travel over 35 miles. It's been recorded at 75 miles,orizontal lightning, or Spider Lightning, can travel over 35 miles. It's been recorded at 75 miles,
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Lightning Distance Calculator Lightning Distance Calculator. Calculate how far away a lightning strike is by counting the number of seconds from when you initially saw the lightning flash until you heard the lightning strike.
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