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Topic: Thunder Meets Lightning


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  Met Office: Thunderstorms
Lightning is a large electrical spark caused by electrons moving from one place to another.
Lightning that shoots from the cloud to the ground is made up of four main parts: a stepped leader, upward streamers, return strokes and dart leaders.
Thunder is the sharp or rumbling sound that accompanies lightning.
www.metoffice.gov.uk /education/secondary/students/thunderstorms.html   (1445 words)

  
 NATIONAL LIGHTNING SAFETY INSTITUTE (NLSI) SAFETY ISSUES
Personal observation of the lightning threat is not adequate; additional information including detecting actual lightning strikes and monitoring the range at which they are occurring relative to the activity is required to ensure consistency, accuracy, and adequate advance warning.
Remember, lightning is always generated and connected to a thundercloud but may strike many miles from the edge of the thunderstorm cell.
Lightning warning signs are effective means of communicating the lightning threat to the general public and raise awareness.
www.lightningsafety.com /nlsi_pls/multiagency_recommendation.html   (1933 words)

  
  Encyclopedia: Thunder Meets Lightning
Personal observation of the lightning threat is not adequate; additional information including detecting actual lightning strikes and monitoring the range at which they are occurring relative to the activity is required to ensure consistency, accuracy, and adequate advance warning.
Lightning warning signs are effective means of communicating the lightning threat to the general public and raise awareness.
Lightning is the leading cause of fires in suburban and rural areas.
www.nationmaster.com /encyclopedia/Thunder-Meets-Lightning   (579 words)

  
 Lightning Answers
Ball lightning is the name given to the mobile luminous spheres which have been observed during thunderstorms.
Ribbon lightning is the name given to the optical illusion occurring when a cloud-to-ground lightning flash is moved sideways an appreciable distance by the wind during the time between the component strokes of the flash.
Bead or chain lightning is a visually well-documented phenomenon in which the lightning channel to ground breaks up, or appears to break up, into luminous fragments generally reported to be some tens of yards long.
www-viz.tamu.edu /students/sarah/lightning/pages/LightningAnswers.htm   (3458 words)

  
 Lightning - Wild Weather :: ABC North Coast NSW
Often, lightning within cloud or behind the cloud cannot be seen and this is referred to as "sheet" lightning.
When one of these fingers meets a descending leader, a path is established and the lightning flashes up the path from the ground to the cloud.
Simultaneous thunder and lightning only occurs when the lightning is very close to you and the storm is overhead.
www.abc.net.au /northcoast/stories/s1039376.htm   (1080 words)

  
 Thunder Meets Lightning   (Site not responding. Last check: 2007-10-29)
Lightning Links Links to relevant news articles and other sites on lightning, photos, lightning variations, fulgerites, lightning victims, books, and research sites.
Lightning Protection Institute The Lightning Protection Institute is a nationwide not-for-profit organization and provides information on lightning safety and lightning protection systems for commercial and residential structures.
Lightning and Atmospheric Electricity at the GHCC Lightning and Atmospheric Electricity at the GHCC (NASA).
www.serebella.com /encyclopedia/article-Thunder_Meets_Lightning.html   (545 words)

  
 Online edition of Sunday Observer - Business   (Site not responding. Last check: 2007-10-29)
Giving credence to the theory that the erection of communication towers may be causing an increase in lightning intensity, residents living in close proximity to communication, broadcasting and telecasting have been experiencing concern about their safety the past few years.
The lightning current heats its path to a temperature of about 40,000 celsius which is eight times higher than the temperature on the surface of the sun, which is about 5000 celsius.
Once lightning strikes a service line, fractions of the lightning current enter through the service line and may destroy all the equipment that is plugged into the system.
www.sundayobserver.lk /2003/05/18/new25.html   (1212 words)

  
 What We Should Know About Thunder
Lightning is the most awesome part of a storm.
Lightning, which is a giant electrical charge, causes thunder.
One stroke of lightning can heat up the air in the lightning channel, that averages only a few centimeters in diameter, to as much as 54,000 degrees Fahrenheit (30,000 degrees C.), although it it often less.
www.geocities.com /EnchantedForest/Tower/1217/thunder.html   (578 words)

  
 Questions and Answers about Thunderstorms: Basics
When warm moist air meets colder drier air, the warm air rises, the water vapor condenses in the air, and forms a cloud.
When the charges build up enough, they are discharged in a bolt of lightning, which causes the sound waves we hear as thunder.
At the ground, the gust front moves out a long distance from the storm and cuts off the warm moist air that was feeding the thunderstorm.
www.nssl.noaa.gov /primer/tstorm/tst_basics.html   (1489 words)

  
 wikien.info: Main_Page : T/TH/THU   (Site not responding. Last check: 2007-10-29)
Thunder Bay may refer to Thunder Bay, Ontario, a city in the Canadian province of OntarioThunder Bay District, Ontario, a district in Northwestern Ontario.Thunder Bay (Michigan), a bay in the U.S. state of MichiganThunder Bay (Ontario), a bay in Ontario for which the city is named for This is a �..
Thunder Bay District is a district and census division in Northwestern Ontario in the Canadian province of Ontario.
Thunder Ranch is home to innovative training, and numerous range designs and functions "of a type not seen before in one facility".
www.alanaditescili.net /browse.php?title=T/TH/THU   (7825 words)

  
 LIGHTNING: Images of lightning strikes and thunderstorms with lightning
Lightning extending from thunderstorms into space is a new area of study and may be observed in special situations involving very clear dark skies.
Lightning is common in a tornadic thunderstorm, but often after the tornado is on the ground the lightning diminishes.
Lightning is generally very active during the formation stages of a wall cloud and mesocyclone.
www.chaseday.com /lightning.htm   (938 words)

  
 Lightning - The Big Spark   (Site not responding. Last check: 2007-10-29)
Lightning may not seem much like static electricity, but it's actually very similar.
When the stepped leader from the cloud meets a returning streamer from the ground, the path is ready.
To review, lightning is created by the attraction between opposite charges, the same force that creates static electricity.
weathereye.kgan.com /cadet/lightning/bigspark.html   (308 words)

  
 Lightning Strikes High in the Clouds
Lightning that most often produces sprites comes from a center of positive charge.
Sprites are like lightning near the Earth, but because they occur high in the Earth's atmosphere, where there are fewer air molecules, they tend to be longer and wider than near ground lightning.
A similar lightning recording device will go beyond the Earth's atmosphere all the way to Mars in 2005 to listen for potential dust storm lightning and similar sprite phenomena.
www.dukenews.duke.edu /2000/09/clouds908_print.htm   (764 words)

  
 Thunder Bay - Hutchinson encyclopedia article about Thunder Bay   (Site not responding. Last check: 2007-10-29)
Thunder Bay is the seat of Lakehead University (1965).
In 1870 troops from eastern Canada disembarked at the site of Port Arthur on their way to quell an Indian rebellion; the spot was named Prince Arthur's Landing after the Duke of Connaught, later governor general of Canada.
Fort William was established by the British in 1789, and became an outpost of the Northwest Company, which was later replaced by the Hudson Bay Company in 1815.
encyclopedia.farlex.com /Thunder%20Bay   (314 words)

  
 Thunder and Lightning
For cloud-to-ground strikes, which make up perhaps 20% of all lightning discharges, the process usually starts at the edge of the N region where the local field is great enough to enable the electrons to ionize air molecules, which is happening all the time, in which electron avalanches create a quiet, nonluminous Townsend discharge.
Lightning is actually a significant hazard, and steps should be taken not to meet it in the open.
In the 19th century, many held that the lightning bored a hole in the air, and thunder was the air filling that vacuum.
www.du.edu /~etuttle/weather/tstorm.htm   (4946 words)

  
 Lightning Protection Specifications
Lightning has killed people while boating, swimming, golfing, exercising, talking on the phone, and even enjoying a concert.
Lightning can carry up to 100,000,000 volts of electricity; Enough energy to illuminate a 100 watt bulb for more than 3 months.
Lightning can strike as far as 10 miles from the leading edge of the storm.
www.lightningsystemsofva.com   (268 words)

  
 Hitachi Data Systems: Press Releases
Designed to meet the storage needs of companies operating heterogeneous computing environments, the Thunder 9200 supports virtually all high-end storage-management features that have become standard for users of the most powerful, centrally managed, enterprise-class storage systems.
The Thunder 9200 supports these features in a very compact footprint that meets open- systems distributed and centralized computing requirements.
The Thunder 9200 scales in a single configuration from 72 gigabytes (GB) to 7.2 terabytes (TB) of capacity, packaged in flexible rackmount or deskside configurations to support easy upgrades as capacity needs expand.
www.hds.com /press_room/press_releases/2001/gl010123.html   (973 words)

  
 Lightning Safety Group Recommendations — DRAFT #1
Recognize that personal observation of lightning may not be sufficient; additional information such as a lightning detection system or additional weather information may be required to ensure consistency, accuracy, and adequate advance warning.
It is relatively unusual for victims who survive a lightning strike to have major fractures that would cause paralysis or major bleeding complications unless they have suffered a fall or been thrown a distance.
A weather radio and the use of lightning detection data in conjunction with an action plan are prudent components of a lightning warning policy, especially when larger groups and/or longer evacuation times are involved.
www.uic.edu /labs/lightninginjury/faq1.htm   (1765 words)

  
 When lightning strikes people
Both industrial shocks and lightning strikes result in deep burns at point of contact - for industry the points of contact are usually on the upper limbs, hands and wrists, while for lightning they are mostly on the head, neck and shoulders.
Both industrial shock and lightning victims may be injured from falling down or being thrown, and the leading cause of immediate death for both is cardiac or cardiopulmonary arrest.
Lightning burns are exceptionally life threatening (see box at the end of this story).
science.msfc.nasa.gov /newhome/headlines/essd18jun99_1.htm   (1882 words)

  
 NWS Lightning Safety Video Text Equivalent Science   (Site not responding. Last check: 2007-10-29)
Lightning is a giant spark of electricity that occurs within the atmosphere or between the atmosphere and the ground.
During a lightning discharge, the sudden heating of the air causes it to rapidly expand.
When one of these streamers meets the step leader, the connection is complete and a surge of electrical current moves from the ground to the cloud causing the visible return stroke that we call lightning.
www.nws.noaa.gov /os/wcm/lightning/media/video_text_science.htm   (864 words)

  
 The Hidden Life of Thunderstorms
Scientists have long assumed that this mostly hidden side of thunderstorms serves as the electrical "pump" that maintains a huge difference in charge between the earth's surface and an upper layer of the atmosphere called the ionosphere.
Scientists are still trying to figure it out: All the cloud-to-ground lightning strikes occurring over the whole planet--about 15 strikes per second--don't move enough electric current to maintain the charge difference seen.
Combined with optical measurements of lightning flashes, the result is a much more complete picture of the electrical infrastructure of thunderstorms.
science.nasa.gov /headlines/y2003/30oct_lightning.htm   (984 words)

  
 Researchers find a correlation between El Nino and Gulf Coast Lightning   (Site not responding. Last check: 2007-10-29)
March 8, 2000: Just as children count the seconds between a flash of lighting and the boom of thunder to guess an approaching storm's distance, scientists are now recognizing the merits of lightning as a valuable indicator of the path and power of storms.
Goodman is a member of the GHCC Lightning Team, formed in the late ‘70s and early ‘80s as a product of NASA’s interest in lightning imaging sensors.
The Lightning Imaging Sensor (LIS) stationed on the Tropical Rainfall Measuring Mission (TRMM) was launched in November of 1997 to study the distribution and variability of global lightning.
spacescience.com /headlines/y2000/essd08mar_1.htm   (1298 words)

  
 Lightning Safety Instructions and Major Links
Louder or more frequent thunder and lightning activity, means the risk for lightning injury or death is increasing.
Lightning is the #2 storm killer in the U.S., killing more than hurricanes or tornadoes.
Lightning tends to be a nervous system injury and may affect any or all parts of the nervous system: the brain, the autonomic nervous system, and the peripheral nervous system.
globalcrisis.info /lightning.html   (2755 words)

  
 Western Comic Books
Johnny Thunder meets his match in a woman who is as tricky as he is, and who has her own secret identity.
In many ways she is a double for Johnny Thunder, sharing such characteristics with him as a divided personality, and an oppositional attitude to the society around her.
Johnny Thunder works somewhat irregularly as a deputy for his Sheriff father, and most of the Sheriff characters in the comics report somewhat diffusely to the town fathers, although this is an infrequent event that is rarely depicted.
members.aol.com /MG4273/westernc.htm   (12451 words)

  
 NASA's KSNN™
You may have heard that Benjamin Franklin flew a kite during a thunderstorm to prove that lightning is a form of electricity.
Lightning is dangerous and should be avoided at all times.
Lightning is fascinating and fun to watch, but make sure you do so safely to ensure that you are around a long time to tell your own stories of thunder and lightning!
ksnn.larc.nasa.gov /webtext.cfm?unit=lightning   (580 words)

  
 electric.html   (Site not responding. Last check: 2007-10-29)
For if an electrified cloud, coming from the sea meets in the air a cloud raised from the land and therefore not electrified; the first will flash its fire into the latter, and thereby both clouds shall be made suddenly to deposit water.
The electrified particles of the first cloud close when they lose their fire: the particles of the other cloud close in receiving it: in both they have thereby an opportunity of coalescing into drops.
Dangerous therefore, is it to shelter under a single tree during a thunder gust.
personal.pitnet.net /primarysources/electric.html   (436 words)

  
 LAS VEGAS RJ:SPORTS: Nedved plans to spend whole year with T...
      The high-scoring center, who is holding out from the Pittsburgh Penguins, signed a contract with the Thunder on Tuesday and took part in the practice session at the Santa Fe Ice Arena.
Because Nedved is a restricted free agent, the Penguins would be owed compensation if he signed with another team, so to do a deal, teams would have to work out a trade in advance with Pittsburgh.
      Thunder coach Bob Bourne said Nedved would likely play with left wing Andrei Vasiliev and right wing Patrice Lefebvre during the regular season, but 17-year-old rookie Pavel Brendl will be on Nedved's right during the exhibition games in Omaha.
www.reviewjournal.com /lvrj_home/1998/Sep-23-Wed-1998/sports/8272702.html   (830 words)

  
 Personal Lightning Safety
If you see a flash in the sky, start counting "one one thousand, two one thousand, three one thousand", and so on until you hear thunder.
This will let you know how many miles away the approaching storm is. For every five seconds the storm is 1 mile away.
A lightning surge can enter the house through all of these.
www.lightningsystemsofva.com /html/safety.htm   (363 words)

  
 David Ehi Reverse Scam
As they will be meeting with the President himself for the weekend to get approvals for the project to be awarded and to whom.
I was able to get the people at the Presidency and they are prepared to do everything possible to move their meeting with President himself to early next week.
Thinking it had been hit by lightning, they investigated, and found damage to the upper story of the house.
www.geocities.com /steerp1ke/David_Ehi.html   (9831 words)

  
 Client Contract
Of interest to meteorologists is the structure of lightning channels (the path of the bolt).
The goal of this project is to create and end-to-end system that reconstructs and displays lightning from a recording of a complete storm.
The data will be processed to yield the physical structure of the lightning channel, along with the time that it occurred.
www.cs.unc.edu /~stotts/145/OLD99/homes/tremble/contracts/contract_rev01.html   (612 words)

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