101. Tornado And Thunderstorms Rock Gulf Coast CNN http://cnn.com/2002/WEATHER/10/29/wx.tuespm.ap/index.html

102. THUNDERSTORM WARNING Thunderstorm Warning. thunderstorms. thunderstorms in Hong Kong occur mainly in spring and summer months. On average, thunderstorms http://www.weather.gov.hk/wservice/warning/thunder.htm

Home What's new Access to information Public services ... Back Thunderstorm Warning Thunderstorms Thunderstorms commonly occur in spring and summer months in Hong Kong. On average, thunderstorms are reported at the Hong Kong Observatory in 5 days per month during April to September. Most thunderstorms form in cumulonimbus cloud. A cumulonimbus cloud typically covers an area of a few kilometres in diameter with a vertical extent of ten kilometres or more, like a tower hanging in the sky. The typical life span of a cumulonimbus cloud is a couple of hours. In the vicinity of active weather systems such as low pressure troughs, cumulonimbus clouds may form one after another. Such thunderstorms are more widespread and persistent. Occasionally, cumulonimbus clouds merge to form severe thunderstorms called supercells. On a summer day that sets off with fine weather, insolation may trigger the growth of cumulonimbus clouds and the formation of thunderstorms. Such thunderstorms are often localized and short lived. The weather may even be sunny not far away from the storms. Sometimes, the cumulonimbus clouds will drift with the wind and affect other areas. The areas of formation of the clouds may also vary with time. Thunderstorms are characterized by flashes of lightning and claps of thunder. In an unstable and moist atmosphere, water droplets and ice pellets in the cloud will become electrically charged in convective motion. When the electric field arising from the piling up of charges reaches a certain breakdown value, lightning discharges take place between clouds or between cloud and the earth's surface. The explosive expansion of the surrounding air produces the rolling sound of thunder. As a rule of thumb, if the sound of thunder reaches an observer three seconds after a lightning flash, the thunderstorm is about one kilometre away from the observer. The distance of thunderstorms for different time delay of the thunder sound can be estimated similarly.

103. CNN.com - Thunderstorms Soak Western U.S. - October 24, 2000 CNN http://www.cnn.com/2000/WEATHER/10/24/weatherpage.am.ap/index.html

weather Editions myCNN Video ... Feedback CNN Sites CNN CNN Europe CNNfn CNNSI myCNN CNNfyi AllPolitics Languages Search CNN.com CNNSI.com CNNfn.com The Web WEATHER TOP STORIES MORE TOP STORIES More than 11,000 killed in India quake Israelis, Palestinians make final push before Israeli election Davos protesters face tear gas MORE ... MORE MARKETS 4:30pm ET, 4/16 DJIA NAS SPORTS Jordan says farewell for the third time ... LOCAL EDITIONS: CNN.com Europe change default edition MULTIMEDIA: video video archive audio multimedia showcase ... more services E-MAIL: Subscribe to one of our news e-mail lists Enter your address: DISCUSSION: chat feedback CNN WEB SITES: CNNfyi.com CNN.com Europe AsiaNow Spanish ... Korean Headlines TIME INC. SITES: Go To ... Time.com People Money Fortune EW CNN NETWORKS: CNN anchors transcripts Turner distribution SITE INFO: help contents search ad info ... jobs WEB SERVICES: Thunderstorms soak western U.S. Satellite image of the United States taken Tuesday at 6:32 a.m. EDT (AP) Clusters of thunderstorms dogged the western Plains early Tuesday, while scattered showers fell over the eastern Great Lakes and the rest of the East basked under a dome of high pressure. Rain was expected to lash the eastern Great Lakes and Ohio Valley as a stationary front located in the Midwest slowly pushes eastward. Clouds were forecast to thicken over New England and the mid-Atlantic.

104. Luky Linetti And The Thunderstorms Translate this page Gruppo che esegue musiche degli anni 50 biografia, date dei concerti, foto e file audio. http://lukylinetti.8m.com/

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105. Thunderstorms thunderstorms. Nature s violence unleashed. Watch for signs of approaching storms. Postpone outdoor activities if thunderstorms are imminent. http://www.kjc.gov.my/htdocs2/english/weather/phenomena/thunderst02.html

THUNDERSTORMS Nature's violence unleashed Thunderstorm and Lightning Safety - What To Do ! Before the Storm .... Check the weather forecast before leaving for extended periods outdoors. Watch for signs of approaching storms. Postpone outdoor activities if thunderstorms are imminent. When the Thunderstorm Approach .... Move to a sturdy building or car. Do not take shelter in small sheds or under isolated trees If lightning is occurring and a sturdy shelter is not available, get inside a car and keep the windows up. Get out of boats and away from water. Telephone lines and metal pipes can conduct electricity. Avoid using the telephone or electrical appliances. Use phones only in an emergency. Unplug electrical appliances which are not in use. Do not take a bath or shower . Turn off air conditioners. Power surges from lightning can overload the compressors. If you are driving on highways and flyovers be alert to strong gusts. Get to higher ground if flash flooding is possible. If Caught Outdoors and No Shelter is Nearby .... Shelter in a low spot away from trees, fences and poles, that is not subject to flooding.

106. North Shivers With Rain, Southwest Trembles With Thunderstorms CNN http://cnn.com/2004/WEATHER/03/11/weatherpage.thurs.am.ap/index.html

107. Texas Weather Network: Thunderstorms And Severe Weather thunderstorms A Development. All thunderstorms, whether or not they become severe, must have three conditions present in order to form. http://www.tsgc.utexas.edu/stars/tstorms.html

Table of Contents: Information provided by the National Weather Service Thunderstorms and Atmospheric Conditions The Thunderstorm Life Cycle Thunderstorm Types Visual Aspects of Thunderstorms ... The Tornado Thunderstorms A thunderstorm should be thought of as a process which takes heat and moisture near the Earth's surface and transports it to the upper levels of the atmosphere. The by-products of this process are the clouds, precipitation, and wind that we associate with the thunderstorm. Atmospheric Conditions for a Thunderstorm Development All thunderstorms, whether or not they become severe, must have three conditions present in order to form. The first necessary condition is moisture in the lower to mid levels of the atmosphere. As air rises in a thunderstorm updraft, moisture condenses into small water drops which form clouds (and eventually precipitation). When the moisture condenses, heat is released into the air, making it warmer and less dense than its surroundings. The added heat allows the air in the updraft to continue rising. The second necessary condition is instability . If the airmass is unstable, air which is pushed upward by some force will continue upward. An unstable airmass usually contains relatively warm (usually moist) air near the earth's surface and relatively cold (usually dry) air in the mid and upper levels of the atmosphere. As the low-level air rises in an updraft, it becomes less dense than the surrounding air and continues to rise. This process is often augmented by added heat due to condensation as discussed above. The air will continue to move upward until it becomes colder and more dense than its surroundings.

108. Showers, Thunderstorms Spread Across The East CNN http://cnn.com/2003/WEATHER/08/10/weatherpage.sunpm.ap/index.html

109. Met Office: Education - Thunderstorms Leaflet thunderstorms. Cumulonimbus clouds. Most thunderstorms are associated with towering clouds known as cumulonimbus. These clouds http://www.met-office.gov.uk/education/curriculum/leaflets/thunderstorms.html

Home Education CLC Thunderstorms leaflet Weather data CLC TTC HWE ... Webcams Thunderstorms Cumulonimbus clouds Most thunderstorms are associated with towering clouds known as cumulonimbus. These clouds normally form on warm, sunny days, although they are sometimes found on a cold front if conditions are right for their formation. Moist air near the Earth's surface is warmed by the sun, and as the air becomes warmer it starts to rise. As it rises it cools, and, if cooled sufficiently, cumulus clouds form at the condensation level. These small, white puffy clouds grow larger and larger as more warm air rises from the ground. If the cloud gets large enough, the top may penetrate the stratosphere, where the air is cooler. Strong winds in the stratosphere blow the top of the cloud downwind, and this gives the top of the cloud an anvil shape. How cumulonimbus clouds form Not all cumulonimbus clouds bring thunderstorms; some just bring heavy showers or hail. On average, an individual cumulonimbus cloud takes only one hour to take shape, grow and dissipate. It produces less than 30 minutes of thunder and lightning. If a thunderstorm lasts longer than this, it is probably because there is more than one cumulonimbus present.

110. CNN.com - Thunderstorms In U.S. Rattle Great Lakes - August 22, 2000 CNN http://www.cnn.com/2000/WEATHER/08/22/weatherpage.am.ap/index.html

weather Editions myCNN Video ... Feedback CNN Sites CNN CNN Europe CNNfn CNNSI myCNN CNNfyi AllPolitics Languages Search CNN.com CNNSI.com CNNfn.com The Web WEATHER TOP STORIES MORE TOP STORIES More than 11,000 killed in India quake Israelis, Palestinians make final push before Israeli election Davos protesters face tear gas MORE ... MORE MARKETS 4:30pm ET, 4/16 DJIA NAS SPORTS Jordan says farewell for the third time ... LOCAL EDITIONS: CNN.com Europe change default edition MULTIMEDIA: video video archive audio multimedia showcase ... more services E-MAIL: Subscribe to one of our news e-mail lists Enter your address: DISCUSSION: chat feedback CNN WEB SITES: CNNfyi.com CNN.com Europe AsiaNow Spanish ... Korean Headlines TIME INC. SITES: Go To ... Time.com People Money Fortune EW CNN NETWORKS: CNN anchors transcripts Turner distribution SITE INFO: help contents search ad info ... jobs WEB SERVICES: Thunderstorms in U.S. rattle Great Lakes Satellite image of the United States taken at 5:15 a.m. EDT The East was basking under high pressure early Tuesday, while the West baked in high temperatures and thunderstorms approached the Ohio and Tennessee valleys and Great Lakes. Mostly clear skies, along with cooler temperatures, were forecast for the Northeast, eastern Great Lakes, the Ohio and Tennessee valleys, and the mid-Atlantic states.

111. BoM - Warning Message Warning Message. Please Note the Severe thunderstorms in New South Wales website has moved to http//www.bom.gov.au/weather/nsw/sevwx/index.shtml. http://www.bom.gov.au/weather/nsw/inside/sevwx/public/

Weather: National Victoria NSW ACT ... Tasmania Warning Message Please Note: the Severe Thunderstorms in New South Wales website has moved to http://www.bom.gov.au/weather/nsw/sevwx/index.shtml . Please update your links. Note, you will be redirected to the new location in 15 seconds If you have waited more then 15 seconds and you are still seeing this message, please click on the new URL mentioned above!. Home Learn about Meteorology Publications News ... SILO Commonwealth of Australia 2004, Bureau of Meteorology (ABN 92 637 533 532) Please note the and statements relating to the use of the information on this site and our site Privacy and Accessibility Acknowledgement notice relating to the use of information on this site.

112. CNN.com - Thunderstorms Stretch From Texas To Maine - June 17, 2000 CNN http://www.cnn.com/2000/WEATHER/06/17/weatherpage.02.ap/index.html

weather CNN Sites CNN CNNfn CNNSI myCNN AllPolitics Languages myCNN Video Audio Headline News Brief ... Feedback CNN Sites CNN CNN Europe CNNfn CNNSI myCNN CNNfyi AllPolitics Languages Search CNN.com CNNSI.com CNNfn.com The Web WEATHER TOP STORIES MORE TOP STORIES More than 11,000 killed in India quake Israelis, Palestinians make final push before Israeli election Davos protesters face tear gas MORE ... MORE MARKETS 4:30pm ET, 4/16 DJIA NAS SPORTS Jordan says farewell for the third time ... LOCAL EDITIONS: CNN.com Europe change default edition MULTIMEDIA: video video archive audio multimedia showcase ... more services E-MAIL: Subscribe to one of our news e-mail lists Enter your address: DISCUSSION: chat feedback CNN WEB SITES: CNNfyi.com CNN.com Europe AsiaNow Spanish ... Korean Headlines TIME INC. SITES: Go To ... Time.com People Money Fortune EW CNN NETWORKS: CNN anchors transcripts Turner distribution SITE INFO: help contents search ad info ... jobs WEB SERVICES: Thunderstorms stretch from Texas to Maine Satellite image of the United States taken at 4:02 p.m. EDT June 17, 2000 Web posted at: 4:23 PM EDT (2023 GMT) (AP) Thunderstorms extended from the southern Plains and Gulf Coast to New England on Saturday, bringing a threat of flash flooding to some areas.

113. BoM - About Severe Thunderstorms About Severe thunderstorms. Literally thousands of thunderstorms occur each year in NSW and the ACT. Monthly Distribution of Severe thunderstorms. http://www.bom.gov.au/weather/nsw/sevwx/about.shtml

Weather: National Victoria NSW ACT ... Tasmania About Severe Thunderstorms 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. In Australia, 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 Flash flooding Tornadoes Each year, upwards of 100 thunderstorms in NSW and the ACT are strong enough to produce one or more of these effects. The chart below shows the number of reported severe thunderstorms from the period July 1988 through to June 2001. Statistics are shown in Financial years (i.e. from 1 July to 30 June the following year) because the peak months for storms occurrence are December and January, the middle of the Financial year. The differences between years are due to two factors. Firstly, the broad weather patterns that cause storms vary from year-to-year resulting in some seasons being more active. And secondly, despite the Bureau's extensive network of observation sites and a storm spotter network of around 1,300 individuals, severe thunderstorms still go unreported in the State, particularly over more remote areas. Monthly Distribution of Severe Thunderstorms Although severe thunderstorms can occur at any time, the distribution of events shows a marked pattern throughout the year. The graph below shows the percentage frequency of severe thunderstorms for each month of the year for a ten year period. There is a marked tendency for severe thunderstorms (indeed all thunderstorms) to occur during the months September through to March. This period is normally referred to as the "Severe Thunderstorm Season" in NSW. The increase in storms during this period is primarily due to the increase in energy provided by the sun during the warmer Spring and Summer months, coupled with Spring and Summer weather patterns that are favourable for storm growth.

114. Thunderstorms, Snow Pushing Through Midwest CNN http://cnn.com/2003/WEATHER/04/16/weatherpage.am.ap/index.html

115. Thunderstorms thunderstorms. Words Music by Nick Walker. More About thunderstorms. Listento a music clip MP3 music clip (stereo) Get the http://www.wxdude.com/tstorms.html

Thunderstorms More About Thunderstorms to a music clip MP3 music clip (stereo) Get the whole song and more Don't have Real Audio? Go here to get it Have you ever noticed lightning in the nighttime? Have you heard the thunder in the afternoon? When you see and hear it, you will know it is the right time To get ready, cause a storm is coming soon. Get ready for some threatening clouds, get ready for a shower; You get ready for a gusty blustery wind. But most of all get ready to see nature show its power. And if you find yourself outside, go in! CHORUS: Thunderstorms, thunderstorms, see the lightning flashing. Thunderstorms, thunderstorms, feel the strong winds blow. The rain will soon fall fiercely when those dark clouds start to form; Oh nothing can compare with thunderstorms. You'll find a thunderstorm whenever cold and warm air clashes, And warmer air below is forced to rise. Clouds become so charged up that they spark electric flashes; Then thunder rolls while rain pours from the skies. (Chorus) It's usually just nature's noisy light show

116. Thunderstorms And Rain Fall Over Much Of Nation CNN http://cnn.com/2002/WEATHER/06/15/weatherpage.pm.ap/index.html

117. Thunderstorms thunderstorms, Thunder and Lightning. Hear a Music Clip. Flash Facts * An estimated two thousand thunderstorms are going on in the world at any one time. http://www.wxdude.com/page5.html

Thunderstorms Thunder and Lightning Hear a Music Clip Lyrics to Song Get the most out of these pages with the Weather Dude ... Music CD Flash Facts: An estimated two thousand thunderstorms are going on in the world at any one time. The diameter of a lightning bolt is about a half-inch to an inch wide, but can be up to five inches wide. The average length of a lightning bolt from a cloud to the ground is three to four miles long. When lightning strikes a sandy beach, the intense heat turns a small portion of the sand into glass. These icicle-shaped pieces are called fulgurites A flash of lightning appears to flicker because there are usually several bolts of lightning striking at almost the same time. Lightning can occur not only in thunderstorms, but also in snowstorms, sand storms, above erupting volcanoes and from nuclear explosions. Word Up: Anvil: This is what the top of a cumulonimbus cloud is called because it resembles an anvil that blacksmiths and metal workers use to hammer and bend metal. Have you ever seen tall, dark puffy clouds forming on a hot humid afternoon? These are called cumulonimbus clouds, sometimes nicknamed "thunderheads."

118. Thunderstorms From Southern Plains To Appalachians CNN http://cnn.com/2003/WEATHER/06/11/weatherpage.wedpm.ap/index.html

119. Thunderstorms & Lightning Tornadoes are spawned by thunderstorms and flash flooding can occur with thunderstorms. Hail. Hail is produced by many strong thunderstorms. http://www.pp.okstate.edu/ehs/chapters/thunder.htm

Some thunderstorms can be seen approaching, while others hit without warning. It is important to learn and recognize the danger signs and to plan ahead. What you should do... ... a thunderstorm. BEFORE Learn the thunderstorm danger signs. Dark, towering, or threatening clouds. Distant lightning and thunder. Estimating the Distance from a Thunderstorm Because light travels much faster than sound, lightning flashes can be seen long before the resulting thunder is heard. Estimate the number of miles you are from a thunderstorm by counting the number of seconds between a flash of lightning and the next clap of thunder. Divide this number by five. Important: You are in danger from lightning if you can hear thundereven if the storm is not overhead. Have disaster supplies on hand... Flashlight with extra batteries Portable, battery-operated radio and extra batteries First aid kit and manual Emergency food and water Non-electric can opener Essential medicines Cash and credit cards Sturdy shoes Check for hazards in the yard.

120. Showers And Thunderstorms Scattered Over Central And Northern Plains CNN http://cnn.com/2003/WEATHER/05/13/weatherpage.tuespm.ap/index.html

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