21. VAEmergency.com > Threats & Emergencies > Thunderstorms The Virginia Department of Emergency Management protects the lives and property of Virginia's citizens from emergencies and disasters by coordinating the state's emergency http://www.vaemergency.com/threats/thunderstorm/

Skip to Content Online Services Commonwealth Sites Help ... Governor Search Virginia.gov: Home Threats Wireless VDEM Home ... Training Calendar VA Business Toolkit Citizen Corps Emergency Management Community Home Grant Information Library How can we make this site better? Let us know ... Thunderstorms Thunderstorm Basics Responding to Thunderstorms Thunderstorms can occur any time of day year round, but are most common in the summer afternoons and evenings. The National Weather Service considers a thunderstorm severe if it produces hail at least three-quarters of an inch in diameter, has winds of 58 miles per hour or higher or produces a tornado. All thunderstorms produce lightning, which can be deadly. Virginia averages 35 to 45 thunderstorm days per year. Home Jobs EM Update Contact Us ... Restricted Access Area Login www.vaemergency.com Virginia's Emergency Web Site WAI Level A Compliant Subscribe to VDEM news EM Update Training News Flash News Releases Grants E-mail Alerts ... VDEM RSS Feed Related Info 2005 Lightning Safety campaign Lightning

22. Thunderstorms — FactMonster.com While thunder won't hurt you—lightning will! So it's important to pay attention when you hear thunder. thunderstorms happen in every state, and every thunderstorm has http://www.factmonster.com/ipka/A0875669.html

Home U.S. People Word Wise ... Homework Center Fact Monster Favorites American Indian Heritage Month Math Flashcards Geography Guide Seven New Wonders of the World ... The Fifty States Reference Desk Atlas Almanacs Dictionary Encyclopedia ... Weather Thunderstorms While thunder won't hurt you—lightning will! So it's important to pay attention when you hear thunder. Thunderstorms happen in every state, and every thunderstorm has lightning. Lightning can strike people and buildings and is very dangerous. Thunderstorms affect small areas when compared with hurricanes and winter storms. The typical thunderstorm is 15 miles in diameter and lasts an average of 30 minutes. Nearly 1,800 thunderstorms are happening at any moment around the world. That's 16 million a year! Despite their small size, all thunderstorms are dangerous. Every thunderstorm produces lightning, which kills more people each year than tornadoes. Strong winds, hail, and tornadoes are also dangers associated with some thunderstorms. You can estimate how many miles away a storm is by counting the number of seconds between the flash of lightning and the clap of thunder.

23. Articles About Thunderstorms - Sun Sentinel thunderstorms News. Find breaking news, commentary, and archival information about thunderstorms from the Sun Sentinel http://articles.sun-sentinel.com/keyword/thunderstorms

24. Thunderstorms Lightning thunderstorms are very common in the Spring and Summer months. Despite their small size in comparison to hurricanes and blizzards, all thunderstorms are dangerous. Every http://www.mass.gov/?pageID=eopsterminal&L=5&L0=Home&L1=Homeland Sec

25. Ready.gov: Thunderstorms Ready America, Educating and empowering Americans to prepare for emergencies including thunderstorms and Severe Lightning http://www.ready.gov/america/beinformed/thunderstorms.html

Skip to navigation Skip to content Ready America Ready Business ... Ready Kids Search: Thunderstorms Downloading and Ordering All Ready Publications Overview ... State and Local Information Here's Something To Think About... Always participate in workplace evacuation drills and consider keeping a smaller version of your emergency supply kit in your desk. Thunderstorms and Lightning In the United States, lightning kills 300 people and injures 80 on average, each year. All thunderstorms produce lightning and all have the potential for danger. Those dangers can include tornadoes, strong winds, hail, wildfires and flash flooding, which is responsible for more fatalities than any other thunderstorm-related hazard. Lightning's risk to individuals and property is increased because of its unpredictability, which emphasizes the importance of preparedness. It often strikes outside of heavy rain and may occur as far as 10 miles away from any rainfall. Most lightning deaths and injuries occur when people are caught outdoors in the summer months during the afternoon and evening. Step 1: Get a Kit Get an Emergency Supply Kit , which includes items like non-perishable food, water, a battery-powered or hand-crank radio, extra flashlights and batteries.

26. Bom - Severe Thunderstorms In NSW, Australia Contains information about the number of stroms a year experienced in this area, their warning system, and how to be safe. http://www.bom.gov.au/weather/nsw/sevwx/

Home About Us Contacts Careers ... Feedback SEARCH Global Australia NSW Vic. ... Registered User Services Thunderstorm FAQs Severe thunderstorms and warning systems Characteristics and formation Climatology and statistis of severe thunderstorms in NSW and the ACT Radar ... Storm spotters To be inserted: FAQ controls that allow definitions to be turned on or off as per TC page Severe Thunderstorms and Warning Systems What is a severe thunderstorm? Literally thousands of thunderstorms occur each year in NSW and the ACT. Although all thunderstorms produce lightning, that is a danger itself, not all of them are "severe" or likely to produce damage. Severe Thunderstorms are defined as those that produce any of the following: HAILSTONES with a diameter of 2cm (the size of a $2 coin) or more WIND gusts of 90km/h or greater Intense rainfall resulting in FLASH FLOODING TORNADOES When is a severe thunderstorm warning issued? A Severe Thunderstorm Warning is issued when existing thunderstorms are likely to develop into a severe thunderstorm A Severe Thunderstorm Warning is also issued when a severe thunderstorm is reported, or there is strong evidence of a severe thunderstorm, and it is expected to persist

27. Thunderstorms In The Imajica - John Furie Zacharias Having A Bad Day In A Strang I found this unpublished draft floating around in the Imajica. I apparently wrote it about the time I started getting all those threats and just quit blogging altogether. http://thunderstorms.blogdrive.com/

28. Severe Storms: Online Meteorology Guide Includes the dangers and types of thunderstorms, plus information on tornados. http://ww2010.atmos.uiuc.edu/(Gh)/guides/mtr/svr/home.rxml

Graphic developed by: Dan Bramer The Severe Storms Module is a combination of two elements. The first is the NOAA Severe Storms Spotters Guide. The second is a section recently added to discuss the efforts and results of modeling severe storms. The Severe Storms Spotters Guide contains supplemental instructional resources and a program designed to familiarize meteorologists and advanced severe storm spotters with the basic "building blocks" of convective storm structure. The focus of the training series is the development of a thunderstorm "spectrum" and a discussion of the physical characteristics and severe weather potential of the various storm types in the spectrum. Sections Last Update:05/15/99 Dangers of Thunderstorms Includes: lightning, floods, hail, winds and tornadoes. Types of Thunderstorms Single cells, multicell clusters, multicell lines (squall lines) and supercells. Components of Thunderstorms Updrafts and downdrafts, outflow phenomena, wall clouds and the effects of wind shear on thunderstorm development. Tornadoes Tornadoes, cyclic storms and low-level flow fields associated with tornadic thunderstorms.

29. Weather Wiz Kids Weather Information For Kids thunderstorms What is a thunderstorm? A thunderstorm is a storm with lightning and thunder. Its produced by a cumulonimbus cloud, usually producing gusty winds, heavy rain and http://www.weatherwizkids.com/weather-thunderstorms.htm

Thunderstorms What is a thunderstorm? A thunderstorm is a storm with lightning and thunder. Its produced by a cumulonimbus cloud, usually producing gusty winds, heavy rain and sometimes hail. What causes a thunderstorm? The basic ingredients used to make a thunderstorm are moisture, unstable air and lift. You need moisture to form clouds and rain. You need unstable air that is relatively warm and can rise rapidly. Finally, you need lift. This can form from fronts, sea breezes or mountains. When are thunderstorms most likely to occur? Thunderstorms can occur year-round and at all hours. But they are most likely to happen in the spring and summer months and during the afternoon and evening hours. How many thunderstorms are there every day? It is estimated that there are around 1,800 thunderstorms that occur across our planet every day. Are thunderstorms dangerous? Yes, despite their small size, all thunderstorms are dangerous. Every thunderstorm produces lightning, which kills more people each year than tornadoes. What is lightning?

30. THunder Storms And Lightning, Official Web Site For The City And County Of Honol Information on what thunderstorms are, how lightning is made, and how to be safe in a lightning storm. http://www.honolulu.gov/dem/thunder.htm

Government Online Services Business / Industry Residency / Community ... DEM THunder Storms And Lightning Department of Emergency Management THUNDERSTORMS AND LIGHTNING It is estimated at any given moment nearly 2,000 thunderstorms are in progress over the earth's surface, and lightning strikes the earth 100 times each second. There are about 45,000 thunderstorms daily and 16 million annually around the world. There are at least 100,000 thunderstorms annually across the United States. Statistics from 1959-82 for the United States show that 2,430 people have lost their lives, and 5,882 have been injured by lightning, an average of a little over 100 people killed and about 250 injured each year. Property loss is estimated in the hundreds of millions of dollars annually. At the U.S. Commerce Department's National Oceanic and Atmospheric Administration (NOAA), scientists monitor and predict these storms. NOAA's National Weather Service keeps a round-the-clock vigil on atmospheric conditions and issues watches and warnings for severe thunderstorms. Project officials at NOAA's Environmental Research Laboratories seek new tools and improved understanding of thunderstorm processes. Scientists probe storms with radar, satellites, lightning detective devices, laser beams, and aircraft.

31. Thunderstorms United States Search and Rescue Task Force. thunderstorms The key ingredient that defines a thunderstorm is lightning. http://www.ussartf.org/thunderstorms.htm

United States Search and Rescue Task Force Thunderstorms The key ingredient that defines a thunderstorm is lightning. Since lightning creates thunder, a storm with lightning is called a thunderstorm. Thunderstorms occur when large air masses rise quickly into the atmosphere, forming huge cumulonimbus clouds. Severe air currents inside the clouds cause water droplets and ice crystals to crash into one another continually, and the friction between these particles creates static electricity in the cloud. Over time, opposite charges build between the top and bottom of the cloud, and the bottom of the cloud and the earth. When these opposing charges become intense, a gigantic spark occurs (lightning) which jumps the gap between the cloud and the earth. The thunder accompanying lightning is the noise produced by the discharge. What is Lightning? The action of rising and descending air within a thunderstorm separates positive and negative charges. Water and ice particles also affect the distribution of electrical charge. Lightning results from the buildup and discharge of electrical energy between positively and negatively charged areas.

32. LIGHTNING: Images Of Lightning Strikes And Thunderstorms With Lightning Images of lightning strikes and thunderstorms with lightning http://www.chaseday.com/lightning.htm

Lightning and Storms Lightning on a Shelf Cloud All images and text Gene Moore Strong winds from a severe thunderstorm appear to be bending out the channel of this lightning bolt. The fast moving wind storm moved through western Oklahoma late at night. The cloud feature along the leading edge is called a gust front or shelf cloud. As it passes the winds shift and become much cooler. This particular storm line had 60 m.p.h. winds. Want to learn more about the lightning and understand what's going on in these storms? Kids can learn more about lightning by visiting sources such as the National Geographic Page on 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. Cloud to Ground Strikes Cloud to ground lightning looks the best when it's out of the rain. The branching shows up best when there is no rain to blur the image. In the left shot taken near Dodge City, Kansas the precipitation is actually virga, it's evaporating before it hits the ground. Note the difference in the top of the lightning and the detail near the ground. The better contrast is lower in the image and out of the rain. The shot on the right is mostly rain free so the branching shows up throughout the shot. Using Lightning To Illuminate the Tornado Lightning is common in a tornadic thunderstorm, but often after the tornado is on the ground the lightning diminishes. This was a lucky shot, well not total luck, I was there. It's really hard to do this, as I have tried for years. On numerous occasions I have had a tornado in the lightning and something goes wrong to keep me from getting it. One time I had two tornadoes going on simultaneously in the lightning east of Wichita, Kansas. I broke out of the storm too close to the tornadoes and they roared by before I could get set up. For this shot I was on a little hand tripod setting on the car hood, which is fast to set up. Also, it wasn't raining and that made it possible to stand outside without soaking the equipment.

33. Thunder3 What is a thunderstorm? A thunderstorm is a weather pattern that includes thunder, lightning, and usually rain or hail. It can lead to tornadoes. http://library.thinkquest.org/5818/thunder3.html

Home Thunderstorms Tornadoes Glossary ... Weather Maps Thunderstorms What is a thunderstorm? A thunderstorm is a weather pattern that includes thunder, lightning, and usually rain or hail. It can lead to tornadoes The basic need for thunderstorms is warm, moist air, so they happen most often in the tropical areas. Over land, thunderstorms strike more often in the afternoon and early evening since the ground heats up from the sun during the day. They occur more frequently on hot summer days than in cold weather. Causes of Thunderstorms Moist air, heated by the sun, rises which causes an updraft of air. As warm air rises, water in the air forms clouds. When water vapor in the cloud gets too heavy, it falls as rain. Conflict between the warm updraft of air and cool water in the clouds causes thunder and lightning. The severity of the thunderstorm depends on the difference in temperature. What causes lightning? What causes thunder? In a cloud, swift air separates water droplets, causing electrical charges.

34. BOLTEK Lightning Detectors Boltek StormTracker and LD-250 Lightning Detectors display lightning strikes live on a map of your area. Can detect and track thunderstorms up to 300 miles away, right from your personal computer. http://www.boltek.com/

Lightning Detection Systems Beautiful to behold, lightning is not only one of nature's most powerful phenomena, but one of the most common and destructive. That's why Boltek has produced a line of state-of-the-art Lightning Detection Systems. With Boltek Lightning Detectors you can detect and track thunderstorms up to 300 miles away, right from your personal computer. Boltek is the leader in affordable thunderstorm tracking technology. Our Lightning Detection systems are installed around the world, constantly watching and warning of lightning. At Boltek, our ongoing research and development efforts have produced significant performance improvements in the past and many more enhancements are planned for the future. A long-range lightning detector helpful in advance planning . Requires installation in a desktop PC. A long-range lightning detector helpful in advance planning . The LD-250 is suitable for both desktop and laptop computers. Also for mobile use and storm chasing. A short-range lightning detector helpful in monitoring nearby thunderstorms. The EFM-100 also

35. Thunderstorms | Define Thunderstorms At Dictionary.com –noun a transient storm of lightning and thunder, usually with rain and gusty winds, sometimes with hail or snow, produced by cumulonimbus clouds. Use thunderstorms in a http://dictionary.reference.com/browse/Thunderstorms

36. Red Sprites And Blue Jets Newly documented optical phenomena occurring above thunderstorms are described here, along with images and movies. Report observations of sprites and jets. A Bibliography is included. http://elf.gi.alaska.edu/

Red Sprites and Blue Jets This is primarily a description of the Univ. Alaska research into middle and upper atmospheric optical and electrical phenomena. I have recently (May 12, 2004) begun to update the descriptions on this web page. Please email me with any corrections, additions, or suggestions Introduction Characteristics of Red Sprites Characteristics of Blue Jets Why Haven't Sprites and Jets Been Reported Before? ... Sprite Bibliography (~200 kbytes) (BiBTeX format here 1998 Fall AGU Bibliography (BiBTeX format here 1999 Fall AGU Bibliography (BiBTeX format here (incomplete) Related Topics Report Observations Introduction Red sprites and blue jets are upper atmospheric optical phenomena associated with thunderstorms that have only recently been documented using low light level television technology. The first images of a sprite were accidently obtained in 1989 (Franz et al. , 1990). Beginning in 1990, about twenty images have been obtained from the space shuttle (Vaughan et al. , 1992; Boeck et al. Since then, video sequences of well over a thousand sprites have been captured. These include measurements from the ground ( Lyons, 1994; Winckler, 1995) and from aircraft (Sentman and Wescott, 1993;

37. Ordinary Thunderstorms - Wikipedia, The Free Encyclopedia Ordinary thunderstorms is a novel by William Boyd. It explores the dark side of London's underworld and the international pharmaceutical industry. http://en.wikipedia.org/wiki/Ordinary_Thunderstorms

Ordinary Thunderstorms From Wikipedia, the free encyclopedia Jump to: navigation search Ordinary Thunderstorms 1st edition Author William Boyd Country United Kingdom Language English Genre(s) Thriller Publisher Bloomsbury Publication date Media type Print ( Hardback Pages Ordinary Thunderstorms is a novel by William Boyd . It explores the dark side of London's underworld and the international pharmaceutical industry. Contents Plot Source Boyd's ideas for the novel External links ... edit Plot Adam Kindred is a recently divorced climatologist who has moved back to England. After attending an interview for a Senior Research Fellowship position at Imperial College, London, he goess into an Italian restaurant in Chelsea and briefly encounters Dr Philip Wang, who accidentally leaves a file behind. Adam takes it to his house, only to discover that Wang has been murdered with a knife in his body. Before Wang dies, he asks Adam to remove it and so Adam becomes incriminated in his murder. Deciding to take refuge, he shelters in a small patch of gardens on London's Embankment to give himself time to think. He decides to go underground, cutting up all his cards and removing anything that could identify him. He soon leads the life of a tramp, searching in rubbish bins for food and only venturing out at night. In the meantime, he decides to try and find out from the file in his possession why Wang was murdered and if there is any connection to Calenture-Deutz, the pharmaceutical company Wang was working for. Calenture-Deutz is a company set up by Ingram Fryzer who is another of the novel's protagonists. Ingram is married with three children and is about to reap large profits from the introduction of a new anti-asthma drug, Zembla-4, that is just about to be launched onto the market after its clinical trials supervised by Dr Wang. To speed up the search for the killer, the company offers a £100,000 reward.

38. Thunderstorms - EHow.com Learn about thunderstorms on eHow.com. Find info and videos including How to Drive in thunderstorms, How to Prepare for a Thunderstorm, How to Enjoy a Thunderstorm and much more. http://www.ehow.com/thunderstorms/

Family Food Health Home Money Style More Home Thunderstorms Thunderstorms Thunderstorms Featured Articles Thunderstorm Anxiety One rumble of thunder and your dog starts to shake, or it runs to and fro, trying to find the best place to hide. Calming a nervous dog may involve some work on your part or a visit to the veterinarian. Camping in a Thunderstorm Camping in a thunderstorm isn't always dangerous but only takes an unexpecting turn to make it a bit more so. This can be unsettling if you aren't prepared, so always make sure you have a plan, should a thunderstorm come. The following tips will help you enjoy your outing, and be prepared for a thunderstorm so you can relax and enjoy... How to Make a Thunderstorm Diorama A diorama is a three dimensional art work that provides a view into a themed scene. Dioramas can be full-sized, such as the nature-based wildlife dioramas found in museums of natural history, or they can be miniature doll house-style scenes. Children as young as six or seven (with adult assistance) can easily create small-scale,... Thunderstorm Electrical Safety As the National Weather Service advises, "When Thunder Roars, Go Indoors." Thunderstorms are unpredictable, severe weather events, with lightning causing an average of 58 deaths in the U.S. each year. Lightning occurs when a static charge builds up in a cloud to the point of discharge. Spring and summer are peak times for thunderstorm...

39. \\Arizona Lightning Photography// Lightning photography from Arizona that showcases the beautiful colors of thunderstorms, sunsets, dust storms and rain shafts. http://www.electricskies.com

travel gallery bio contact ... links home ELECTRICSKIES.COM All images contained on this site remain the property of Cathy Franklin. Unauthorized usage is unacceptable. If you would like to purchase any images plaese contact Cathy. Thanks for being so kind.

40. Tornadoes... Lightning... Thunderstorms... Tornadoes Lightning thunderstorms Nature's Most Violent Storms. A PREPAREDNESS GUIDE Including Tornado Safety Information for Schools U.S. DEPARTMENT OF COMMERCE http://www.nws.noaa.gov/om/brochures/ttl.htm

Tornadoes... Lightning... Thunderstorms... Nature's Most Violent Storms A PREPAREDNESS GUIDE Including Tornado Safety Information for Schools U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Weather Service Sponsored by The American Red Cross Federal Emergency Management Agency National Oceanic and Atmospheric Administration FAMILY DISASTER PLAN Follow these basic steps to develop a family disaster plan... Gather information about hazards. Meet with your family to create a plan. Post emergency telephone numbers by phones Install safety features in your house, such as smoke detectors and fire extinguishers Inspect your home for potential hazards (such as items that can move, fall, break, or catch fire) and correct them Have your family learn basic safety measures, such as CPR and first aid; how to use a fire extinguisher; and how and when to turn off water, gas, and electricity in your home Teach children how and when to call 911 or your local Emergency Medical Services number Keep enough supplies in your home to meet your needs for at least three days. Assemble a disaster supplies kit with items you may need in case of an evacuation. Store these

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