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Topic: Thunderstorm

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	Learn more about Thunderstorm in the online encyclopedia. (Site not responding. Last check: 2007-11-02)
		A thunderstorm is a form of severe weather characterized by the presence of lightning and its attendant thunder.
		Thunderstorms form when three conditions are present: sufficient moisture accumulated in the lower atmosphere, a significant fall in air temperature with increasing height, and a force (such as the pressure differential of a cold front) that will push the moisture into the low-temperature upper regions.
		In the cumulus stage of a thunderstorm cell, masses of moisture are pushed upwards; the moisture rapidly cools into liquid drops of water vapor, which appears as cumulus clouds.
	www.onlineencyclopedia.org /t/th/thunderstorm.html (717 words)

	Thunderstorm - Facts, Information, and Encyclopedia Reference article
		A thunderstorm, or an electrical storm, is a form of weather characterized by the presence of lightning and its attendant thunder.
		Thunderstorms were associated with the Thunderbirds, held by Native Americans to be a servant of the Great Spirit.
		A severe thunderstorm is a thunderstorm with winds 90 km/h or greater, 2 cm or larger hail, or tornadoes.
	www.startsurfing.com /encyclopedia/t/h/u/Thunderstorms.html (1118 words)

	FEMA: Thunderstorms and Lightning
		Dry thunderstorms that do not produce rain that reaches the ground are most prevalent in the western United States.
		Thunderstorms typically produce heavy rain for a brief period, anywhere from 3 0 minutes to an hour.
		About 10 percent of thunderstorms are classified as severe—one that produces hail at least three-quarters of an inch in diameter, has winds of 58 miles per hour or higher, or produces a tornado.
	www.fema.gov /hazard/thunderstorm/index.shtm (326 words)

	Thunderstorm Index
		While thunderstorms and lightning can be found throughout the United States, they are most likely to occur in the central and southern states.
		A thunderstorm is formed from a combination of moisture, rapidly rising warm air and a force capable of lifting air such as a warm and cold front, a sea breeze or a mountain.
		Thus, it is possible for several thunderstorms to affect one location in the course of a few hours.
	www.ohsep.louisiana.gov /hlshazards/thunderstormlindex.htm (424 words)

	Thunderstorm
		A thunderstorm, which consists of a cumulonimbus cloud, form in an unstable envirnoment that has moisture at low levels.
		Prior to the development of a thunderstorm, the air near the surface is often warm and moist.
		In the Severe thunderstorm the updrafts and downdrafts are separate from one another, This allows the storm to last longer and severe weather may develop.
	cimss.ssec.wisc.edu /wxwise/class/thndstr.html (927 words)

	City of College Station - Thunderstorms (Site not responding. Last check: 2007-11-02)
		Thunderstorms are very common and affect great numbers of people each year.
		Despite their small size in comparison to hurricanes and winter storms, all thunderstorms are dangerous.
		These are generically referred to as dry thunderstorms and are most prevalent in the western United States.
	www.cstx.gov /home/index.asp?page=1980 (401 words)

	Glossary (Site not responding. Last check: 2007-11-02)
		Thunderstorms can form in association with any of these fronts, although fronts are not necessary for thunderstorm development.
		thunderstorms, mammatus are seen on the underside of the anvil.
		Tornadoes and funnel clouds are usually pendant from wall clouds or directly from the thunderstorm base, within a few miles to the southwest of the precipitation shaft.
	www.movies.warnerbros.com /twister/cmp/glossary.html (1359 words)

	Severe Thunderstorm Preparation and Response
		The typical thunderstorm is 15 miles in diameter and lasts an average of 20 to 30 minutes.
		For example, a severe thunderstorm watch means that a severe thunderstorm is expected in the next six hours or so within an area approximately 120 to 150 miles wide and 300 to 400 miles long (36,000 to 60,000 square miles).
		To estimate the number of miles you are from a thunderstorm, count the number of seconds between a flash of lightning and the next clap of thunder.
	www.disastercenter.com /guide/thunder.html (3357 words)

	BBC NEWS \| Health \| Asthma warning over thunderstorms
		At the end of June 2005 a six-fold rise in the number of emergency admissions for asthma was reported over one weekend as the result of thunderstorms.
		He said "Thunderstorms occurring at a time when the pollen levels have been high have been associated with previous epidemics of asthma attacks.
		For years asthma sufferers claimed their condition worsened during thunderstorms, but there was little scientific evidence to back this up.
	news.bbc.co.uk /1/hi/health/5072530.stm (326 words)

	Thunderstorms: A Recipe - The Introduction (Site not responding. Last check: 2007-11-02)
		Thunderstorms are one of nature's most exotic weather dishes.
		Unlike ordinary rain storms, thunderstorms have a delicate balance of airborne water vapor that is whipped by convection cells, and then chilled to the point of condensation.
		The newly created precipitation is combined with wind and lightning to create a distinct and flavorful storm that is known all over the world as a thunderstorm.
	weathereye.kgan.com /expert/tstorms/index.html (162 words)

	What Are Thunderstorms?, City and County of Honolulu
		Thunderstorms, generated by temperature imbalances in the atmosphere, are a violent example of convection.
		Strong gusts of cold wind from the downdraft or heavy precipitation--rain or hail--often occur at the ground beneath and outward from the mature storm.
		These are nature's warnings that the thunderstorm is in its most violent stage.
	www.co.honolulu.hi.us /ocda/thunder1.htm (500 words)

	Thunder3
		A thunderstorm is a weather pattern that includes thunder, lightning, and usually rain or hail.
		Over land, thunderstorms strike more often in the afternoon and early evening since the ground heats up from the sun during the day.
		The energy released by a thunderstorm is thought to be larger than the explosion of a atomic bomb.
	library.thinkquest.org /5818/thunder3.html (351 words)

	Thunderstorm
		Severe thunderstorms produce hail the size of a dime or larger and/or winds of 58 miles per hour or greater.
		Although Florida thunderstorms are generally less than 15 miles in diameter, they can grow vertically to great heights in excess of 10 miles high into the atmosphere.
		Severe Thunderstorm Watch - Issued to alert the public that conditions are favorable for the development of severe thunderstorms in and close to the watch area.
	www.floridadisaster.org /bpr/emtools/severe/thunderstorms.htm (528 words)

	Thunderstorm asthma: how weather can trigger attacks
		Epidemics of "thunderstorm" asthma have been described in Melbourne, Wagga and London.
		Higham J, Venables K, Kupek E, Bajekal M. Asthma and thunderstorms: description of an epidemic in general practice in Britain using data from a doctors' deputising service in the UK.
		Thunderstorm associated asthma: a detailed analysis of environmental factors.
	www.allergycapital.com.au /Pages/thund.html (607 words)

	Thunderstorms (Site not responding. Last check: 2007-11-02)
		Thunderstorm, thunderstorms, severe thunderstorms, lightning thunderstorm, tornados thunderstorms, wind and thunderstorms, storms, supercells, mesocyclones, atmospheric processes, convection, hail, inflow, tornadogenesis
		While the thunderstorm is active, a number of processes are occuring that produce the weather we normally associate with thunderstorms: strong winds, hail, lightning, heavy rains and tornados.
		At the core of the storm, warm moist air is being sucked upward in the updraft which is usually near the rear (typically southeast) of the storm.
	www.stormwarn.com /rants/thunderstorm_processes.html (655 words)

	Types of Thunderstorms: single cell, multicell clusters, multicell lines and supercells (Site not responding. Last check: 2007-11-02)
		The "intense" updraft storm is almost invariably the supercell, a storm capable of producing the most devastating weather, including violent tornadoes.
		With the two multicell storm categories, we have defined four basic storm types from the thunderstorm spectrum.
		We stress that a "severe" storm is a somewhat arbitrary National Weather Service definition of a storm with one or more of the following elements: 3/4 inch or larger diameter hail, 50 KT downbursts, and tornadoes.
	ww2010.atmos.uiuc.edu /(Gh)/wwhlpr/storm_classification.rxml?hret=/guides/mtr/hurr/stages/td.rxml (153 words)

	Severe Storms: online meteorology guide
		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.
		Updrafts and downdrafts, outflow phenomena, wall clouds and the effects of wind shear on thunderstorm development.
		Tornadoes, cyclic storms and low-level flow fields associated with tornadic thunderstorms.
	ww2010.atmos.uiuc.edu /(Gh)/guides/mtr/svr/home.rxml (278 words)

	A Lightning Primer from the GHCC
		During a Pennsylvania thunderstorm in 1752 the most famous kite in history flew with sparks jumping from a key tied to the bottom of damp kite string to an insulating silk ribbon tied to the knuckles of Franklin's hand.
		n addition to showing that thunderstorms contain electricity, by measuring the sign of the charge delivered through the kite apparatus, Franklin was able to infer that while the clouds were overhead, the lower part of the thunderstorm was generally negatively charged.
		Time-resolved photography was used by many experimenters during the late l9th century to identify individual lightning strokes that make up a lightning discharge to the ground.
	thunder.msfc.nasa.gov /primer (1038 words)

	"Thunderstorm!"
		The sound of thunder is an obvious indication that you may be in for a rough time, and in mountainous areas where your view of the sky is limited, thunder may be your first indicator that a storm may be just beyond the horizon.
		Thunderstorms generate electrical discharges of incredible voltage, which are visible as lightning bolts.
		When you are overtaken by a severe thunderstorm, your safest place in that electrical storm is in a vehicle.
	www.whmentors.org /saf/storm.html (2394 words)

	Williams Fire & Hazard Control, Inc® - Industrial Fire Fighters (Site not responding. Last check: 2007-11-02)
		Williams Fire and Hazard Control, Inc® teams with Ansul to create a flammable liquid firefighting foam - AR/AFFF - the way it should be...
		The PDF files to follow will give you insight into technical and compatability aspects of using ThunderStorm™ ATC.
		ThunderStorm is available as 1 x 3, 3 x 3 and 3 x 6 concentrate.
	www.williamsfire.com /tstorm/tstorm.html (88 words)

	Amazon.com: Echoes of Nature: Thunderstorm: Music: Various Artists (Site not responding. Last check: 2007-11-02)
		Solitudes: Thunderstorm in the Wilderness ~ Dan Gibson
		Thunderstorm from the Echoes of Nature series is one of my favorite lie-back-and-relax CD's.
		It is reminiscent of times I've spent backpacking along the Appalachain Trail in the Shenandoah National Park, listening to rain patter on the leaves over my head, or lying in my tent and listening to the thunder rumble across the valley.
	www.amazon.com /Echoes-Nature-Thunderstorm-Various-Artists/dp/B000001V3A (959 words)

	USATODAY.com (Site not responding. Last check: 2007-11-02)
		Thunderstorms are one of the most common and most noticeable weather products of our atmosphere.
		Scroll down this page for links to more information, beginning with types of thunderstorms and including thunderstorm dangers, history and science.
		The Thunderstorm Project – 1946-49: Where it all began
	www.usatoday.com /weather/resources/basics/thunderstorms.htm (178 words)

	Thunderstorm - Movie Info - Moviefone
		Synopsis: Thunderstorm was produced in Spain by actress Binnie Barnes, though one suspects that most of the production details were handled by her husband Mike Frankovich.
		Thunderstorm (1996): find the latest news, photos and trailers, as well as local showtimes/dvd info at Yahoo!
		Thunderstorm - Cast & Crew, movie showtimes, plot, synopsis, exclusive features, trailers, clips, theater listings, reviews, message boards, dvd, videos, rentals and more on Moviefone.
	movies.aol.com /movie/thunderstorm/1077440/main (131 words)

	foldedspace.org: Thunderstorm!
		Thunderstorms are a rare enough occurrence in Portland — though I remember they used to be more common — but I cannot recall another night thunderstorm.
		Ryan woke up at 2:30 this morning...so I was awake for the beginning of the storm and the rain.
		I laid in bed for a while before I went back to sleep and watched my room light up followed by the most angry thunder I had heard in a long time.
	www.foldedspace.org /archives/002864.html (865 words)

	NSSL Research Topics - Thunderstorms (Site not responding. Last check: 2007-11-02)
		Some have the potential to produce damaging straight-line winds, large hail, heavy rain, flooding, and tornadoes.
		A thunderstorm is classified as severe when it contains one or more of the following pheno mena:
		Research in this area at NSSL is focused on observation and understanding of thunderstorm initiation and structure, as well as and software applications and algorithms.
	www.nssl.noaa.gov /researchitems/thunderstorms.shtml (117 words)

	American Red Cross (Site not responding. Last check: 2007-11-02)
		Thunderstorms and Lightning...the Underrated Killers, in-depth Information about thunderstorms from the National Weather Service
		when a thunderstorm, earthquake, tornado, flood, fire, or other emergency happens in your community, you can count on your local American Red Cross chapter to be there to help you and your family.
		Your Red Cross is not a government agency and depends on contributions of your time, money, and blood.
	www.redcross.org /services/disaster/0,1082,0_590_,00.html (534 words)

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