161. Rain And Thunderstorms Soak Southern Plains CNN http://cnn.com/2002/WEATHER/04/07/weatherpage.pm.ap/index.html

162. When Thunderstorms Collide When thunderstorms Collide. What can happen when 2 thunderstorms join? A laminar, striated arcus cloud and some powerful fireworks! http://www.stormeyes.org/tornado/SkyPix/arcusltg.htm

Roger's SkyPix Night Lightning When Thunderstorms Collide What can happen when 2 thunderstorms join? A laminar, striated arcus cloud and some powerful fireworks! There is a lot of meteorology in this picture. Note how the cloud base of the storm at left is forced upward, parallel to and above the arcus cloud. The arcus condenses in moist air being smoothly lifted above outflow expelled by an unseen storm off to the right. The beauty of its double-plated, laminar (smooth) appearance belies the danger underneath from wind and lightning. Where the outflows from the two storms collide, in the background, new cells form fast, prolifically sparking from rapid charge separation within. Merging thunderstorm cells are also well-known producers of localized heavy rain and flash flood events, and occasionally severe gusts and hail. Buildings in this photo are dorms on the OU campus, and part of the stadium (at right). Norman OK (9 Sep 88) Looking SW GPS NEXT e

163. Thunderstorms In Great Lakes CNN http://cnn.com/2001/WEATHER/04/09/weatherpage.weather.ap/index.html

164. GS0's Lightning Page Approximately 100,000 thunderstorms occur in the United States each year. Approximately 10% of all thunderstorms are severe enough http://www.flash.net/~nymaz/weather/lightnin.html

Interesting lightning facts: Average Lightning Stroke is 6 miles long. The Temperature of lightning's return stroke can reach 50,000 degrees Fahrenheit. The surface of the sun is not even that hot! (around 11,000 degrees Fahrenheit). Average Thunderstorm is 6-10 miles wide. Average Thunderstorm travels at a rate of 25 miles per hour. Once the leading edge of a thunderstorm approaches to within 10 miles, you are at immediate risk due to the possibility of lightning strokes coming from overhanging anvil cloud. Because of this, many lightning deaths and injuries occur with clear skies directly overhead. On average, thunder can only be heard over a distance of 3-4 miles, depending on humidity, terrain and other factors. Approximately 100,000 thunderstorms occur in the United States each year. Approximately 10% of all thunderstorms are severe enough to produce high winds, flash floods, and tornadoes. Thunderstorms cause an average of 200 deaths and 700 injuries in the United States each year. Here's what NOAA(National Oceanic and Atmospheric Administration) has to say about lightning safety: Stay indoors, and don't venture outside, unless absolutely necessary

165. Thunderstorm Chase And Hsitorical Weather Providing storm chase tours all summer, right through August. Professional meteorologists are the guides as you enjoy the adventure of chasing supercell thunderstorms. http://www.rapidwx.com/chasewx.htm

Rapid Weather's Guided Weather Expeditions Photography / Education / Research www.rapidwx.com Snowstorm tours start November 18th and leave every Monday. The Western High Plains offer you great views of thunderstorms. Whether you are interested in watching thunderstorms develop, cloud and thunderstorm photography or basic research, we will help you in your quest. Severe thunderstorms are relatively rare, but over the western high plains we frequently see isolated strong thunderstorms. The visibility is usually very good, allowing you to watch and photograph thunderstorms from a safe distance. We'll use our expertise to identify the best thunderstorm days, notify you where and when we expect the thunderstorms, and then we'll guide you to them. We will usually give you a heads-up for favorable thunderstorm days 24 to 72 hours in advance. We cover South Dakota, North Dakota, Nebraska, Kansas, Iowa, Minnesota, eastern Montana, eastern Colorado, eastern Wyoming, Missouri, Oklahoma and Texas. We will guide you throughout the spring and summer, May through August. Economy Tours 6 days for $2495.00 per person. Lodging and transportation are included. You are responsible for your own meals.

166. SouthBendTribune.com: Thunderstorms Kill Three May 22, 2004. thunderstorms kill three. High winds down trees, flip vehicles, cut power to many Tribune Staff Report A crew works http://www.southbendtribune.com/stories/2004/05/22/local.20040522-sbt-MWKA-A1-Th

May 22, 2004 Thunderstorms kill three High winds down trees, flip vehicles, cut power to many Tribune Staff Report A crew works to remove a tree that fell between two houses in the 100 block of Michigan Avenue in Dowagiac during Friday's storm. The tree crushed a pickup truck parked in the driveway and damaged a gas line near the street but narrowly missed the houses on either side of the driveway. Tribune Photo/MELISSA WEST High winds Friday morning took down several trees in South Bend's Bendix Park. Tribune Photo/PAUL RAKESTRAW Dianna Merriweather and her grandson, Devon, 2, survey the tree and utility pole brought down by Friday morning's high winds in her front yard on Kenwood Avenue in South Bend. Tribune Photo/PAUL RAKESTRAW Without power Total customers affected throughout Michigan and northern Indiana: about 87,000 AEP customers still without power late Friday: 81,000 8,000 in South Bend 10,000 in Elkhart 38,000 in northern Berrien County Earlier in the day, about 2,500 Northern Indiana Public Service Co. customers in the Plymouth and Goshen districts were without power Only 20 REMC customers in Marshall County lost power Power loss survival Stay away from fallen power lines. They could be carrying a dangerous electrical current.

167. Thunderstorms In Southwest, Showers And Snow In Northeast CNN http://cnn.com/2004/WEATHER/04/04/weatherpage.pm.ap/index.html

168. Lightning Activity Of Thunderstorms In Relation To Environmental And Radar Chara Oscar s weather photography site Lightning activity of thunderstorms in relation to environmental and radar characteristics Oscar van der Velde Abstract http://lightningwizard.com/KNMI-av/

Oscar's weather photography site Lightning activity of thunderstorms in relation to environmental and radar characteristics Oscar van der Velde Abstract Introduction This is an abstract from my Master's thesis research, which I did at the KNMI (September 1999-April 2000). My supervisors were Iwan Holleman and Herman Wessels (KNMI). The main objective of this study was to give insight into the temporal and spatial aspects of lightning activity during the life cycle of diverse types of thunderstorms, and to examine the possible relationships with thunderstorm environment and radar characteristics. The two radars from the Royal Netherlands Meteorological Institute (KNMI) were used together with the SAFIR two-dimensional lightning mapping interferometer system. Synops and upper air soundings were used to examine thunderstorms and their lightning activity in their synoptic environment. The research questions were: What are the general relationships between environment, type and radar characteristics of a thunderstorm and its lightning activity? How does lightning activity evolve during a thunderstorm's life cycle and where in the storm does it occur?

169. Severe Thunderstorms Roll Over Southeast CNN http://cnn.com/2002/WEATHER/05/01/weatherpage.pm.ap/index.html

170. Click2Houston.com - Weather - Thunderstorms, High Winds Hit Houston thunderstorms, High Winds Hit Houston. 5 Drown In Storms Statewide. UPDATED 1026 PM CDT May 1, 2004. HOUSTON A line of strong http://www.click2houston.com/weather/3259434/detail.html

Search Contact KPRC Sign up for E-News Hello 2 At Home ... Yellow Pages // Set DC ad position if(typeof dcadposition == 'undefined')dcadposition = 1; else dcadposition++; document.write(""); HOME Weather Email This Story Print This Story Thunderstorms, High Winds Hit Houston 5 Drown In Storms Statewide UPDATED: 10:26 PM CDT May 1, 2004 HOUSTON A line of strong thunderstorms rolled through the Houston-area Saturday, bringing hail, violent winds and heavy downpours. Tomball and northwest Harris County were hardest hit when a tornado touched down. Roofs were ripped off buildings, awnings were torn, windows were broken and trees were uprooted from the high winds. The category F-1 twister damaged several businesses, including a Bank of America, near Highway 249 at FM 2920. The National Weather Service said thunderstorms packing 60 mph winds and golf ball-sized hail dumped 1 to 3 inches of rain across much of northern and coastal Texas Friday night and Saturday morning. Flood watches were in effect for more than half the state Saturday. In Polk County, a dam burst near the Crystal Lake Subdivision, by Highway 190. Approximately 100 homes and businesses were flooded, officials told News2Houston.

171. More Thunderstorms Soak Upper Midwest, Parts Of Southeast CNN http://cnn.com/2001/WEATHER/07/22/weatherpage.pm.ap/index.html

172. National Weather Service - San Francisco Bay Area - Tornadoes And Thunderstorms Tsunami/Quakes. thunderstorms. NOAA Wx Radio. StormReady. Contact Us. wsfomtr@noaa.gov. ..TORNADOES AND thunderstorms. CURRENT SEVERE WEATHER INFORMATION. http://www.wrh.noaa.gov/Monterey/tornado.html

www.nws.noaa.gov Search field for weather information. Press Enter or select the go button to submit request Search by city and state. Press enter or select the go button to submit request Text Only Current Hazards Local Warnings Nationwide Outlooks Storm Report Current Conditions Observations Buoy Reports Satellite Images Radar Imagery ... Rainfall Totals Forecasts Area Forecasts Prototype Digital Forecast Aviation ... Winter Weather Climate Local Data Co-op Program Sun/Moon/Tides Climate Outlook Weather Safety Storm Spotters Tsunami/Quakes Thunderstorms NOAA Wx Radio ... Lightning Miscellaneous FAQ More FAQs Useful Links Contact Us wsfomtr@noaa.gov

173. Thunderstorms Pound Upper Midwest, Tennessee Valley And South CNN http://cnn.com/2002/WEATHER/07/31/weatherpage.pm.ap/index.html

174. Top Story - THUNDERSTORMS ARE AFFECTED BY POLLUTION - May 02, 2002 In southern Brazil, warm temperatures and moistureladen air make large thunderstorms commonplace. mature thunderstorms image. Image 1. http://www.gsfc.nasa.gov/topstory/20020501thunder.html

For more information contact: Cynthia M. O'Carrol l Rob Gutro Goddard Space Flight Center, Greenbelt, Md. (Phone: 301/614-5563 or 301/286-4044) Jackie Weaver Yale University (Phone: 203/432-8555) Stephanie Kenitzer American Meteorological Society (Phone: 425-432-2192) American Meteorological Society Caption for Image 1: This is a photograph of a series of mature thunderstorms located near the Parana River in southern Brazil, in February 1984, as seen by NASA's space shuttle. In southern Brazil, warm temperatures and moisture-laden air make large thunderstorms commonplace. CREDIT: NASA Image # STS41B-041-2347 Caption for Images 2 and 3: Clouds require water vapor and water-soluble aerosols like salt from Earth's surface to form. Unfortunately pollution-produced aerosols increase the number of and depress the size of ice crystals in thunderclouds. Now smaller, the crystals don't fall out of the cloud as easily and evaporate instead of falling as rain. CREDIT: NASA

175. Scattered Thunderstorms In East CNN http://cnn.com/2003/WEATHER/03/29/weather.page.pm.ap/index.html

176. Rain, Snow And Thunderstorms In West CNN http://cnn.com/2004/WEATHER/03/13/weatherpage.am.ap/index.html

177. FPUS53 KLOT 222351 AAA ILZ003 005-008-010 012-231100- BOONE-DE TONIGHT SHOWERS AND thunderstorms LIKELY. SOME thunderstorms MAY BE SEVERE. SUNDAY PARTLY CLOUDY WITH A 40 PERCENT CHANCE OF SHOWERS AND thunderstorms. http://weather.admin.niu.edu/forecast2.txt

FPUS53 KLOT 240350 AAA ILZ003>005-008-010>012-241100- BOONE-DE KALB-KANE-LEE-MCHENRY-OGLE-WINNEBAGO- INCLUDING THE CITIES OF...AURORA...BELVIDERE...DE KALB...DIXON... OREGON...ROCKFORD...WOODSTOCK 1048 PM CDT SUN MAY 23 2004 UPDATED .TONIGHT...PARTLY CLOUDY. LOWS IN THE MIDDLE 50S. WEST WINDS 10 TO 20 MPH. .MONDAY...PARTLY CLOUDY. HIGHS IN THE LOWER 70S. NORTH WINDS 10 TO 15 MPH. .MONDAY NIGHT...PARTLY CLOUDY WITH A 40 PERCENT CHANCE OF SHOWERS AND THUNDERSTORMS. LOWS IN THE UPPER 50S. EAST WINDS 10 TO 15 MPH. .TUESDAY...MOSTLY CLOUDY WITH A 40 PERCENT CHANCE OF SHOWERS AND THUNDERSTORMS THEN PARTLY CLOUDY IN THE AFTERNOON. HIGHS IN THE MIDDLE 70S. SOUTH WINDS 5 TO 10 MPH SHIFTING TO THE WEST 10 TO 15 MPH IN THE AFTERNOON. .TUESDAY NIGHT...PARTLY CLOUDY. LOWS IN THE UPPER 40S. WEST WINDS 10 TO 15 MPH. .WEDNESDAY...PARTLY CLOUDY. HIGHS IN THE UPPER 60S. .WEDNESDAY NIGHT...PARTLY CLOUDY. LOWS IN THE LOWER 50S. .THURSDAY...MOSTLY CLOUDY. HIGHS IN THE LOWER 70S. .THURSDAY NIGHT...PARTLY CLOUDY. LOWS IN THE MIDDLE 50S. .FRIDAY...PARTLY CLOUDY WITH A 40 PERCENT CHANCE OF SHOWERS AND THUNDERSTORMS. HIGHS IN THE LOWER 70S. .FRIDAY NIGHT...MOSTLY CLOUDY WITH A 40 PERCENT CHANCE OF SHOWERS AND THUNDERSTORMS. LOWS IN THE UPPER 50S. .SATURDAY...PARTLY CLOUDY. HIGHS IN THE LOWER 70S. .SATURDAY NIGHT...PARTLY CLOUDY. LOWS IN THE UPPER 50S. .SUNDAY...PARTLY CLOUDY. HIGHS IN THE MIDDLE 70S.

178. CNN.com - Thunderstorms Scattered Over Southeast, Hot In Plains - Aug. 18, 2003 CNN http://cnn.com/2003/WEATHER/08/18/weatherpage.pm.ap/index.html

The Web CNN.com Home Page World U.S. Weather ... Special Reports SERVICES Video E-Mail Services CNNtoGO SEARCH Web CNN.com Thunderstorms scattered over Southeast, hot in Plains Satellite image taken Monday at 9:45 p.m. EDT Story Tools (AP) Scattered thunderstorms formed across the Southeast on Monday afternoon, and temperatures in the low 90s spread as far north as the Dakotas. Thunderstorms developed along parts of the Gulf Coast around the middle of the day and spread quickly into parts of Mississippi, Alabama, Georgia and South Carolina. Rainfall amounts by midday were mostly less than 0.70 of an inch. Earlier in the day, storms massed along the coasts of North and South Carolina before moving out to sea. High pressure dominating the central part of the nation pumped hot air northward across the Plains, with temperatures reaching the upper 80s and a few 90s as far north as Minnesota and South Dakota. The heat index, based on a combination of temperature and humidity, hit 111 by midday at Chandler, Oklahoma, with levels of 110 elsewhere in Oklahoma and in parts of Iowa, Nebraska and Arkansas. Along with the hot air, a few showers moved northward across parts of eastern Colorado, Oklahoma, Kansas, Nebraska and South Dakota. A few showers also formed along the Rockies in Colorado and Wyoming.

179. BBC NEWS | UK | England | London | London Hit By Freak Thunderstorms London hit by freak thunderstorms. Cars marooned. Hundreds of people in London have been affected by flooding caused by freak thunderstorms. http://news.bbc.co.uk/2/hi/uk_news/england/london/3665079.stm

News Sport Weather World Service ... Programmes Last Updated: Wednesday, 28 April, 2004, 11:04 GMT 12:04 UK E-mail this to a friend Printable version London hit by freak thunderstorms Cars in some parts of south-east London were marooned Hundreds of people in London have been affected by flooding caused by freak thunderstorms. Areas in south-east London bore the brunt of the torrential rains on Tuesday evening. More rain is predicted in London on Wednesday. In Dulwich cars were marooned in flooded roads and a number of streets are closed in the Streatham Hill and Brixton areas. Lightning struck a house in Stanmore, north-west London, causing a fire. Kings Cross station's Thameslink tunnel was closed and train services across London have been affected. The London Fire Brigade reported taking hundreds of flooding-related calls within just an hour and said they were still coming in "thick and fast". A Dulwich resident said: "The depth of the water on some of the roads was more than 1ft. On some cars, water was even lapping as high as the windscreen." Kent Fire and Rescue Service also received hundreds of flooding calls as they helped to deal with the situation in London.

180. CNN.com - Showers In Parts Of The East Coast, Thunderstorms In Southwest - Augus CNN http://www.cnn.com/2000/WEATHER/08/29/weather.page.02.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: Showers in parts of the East Coast, thunderstorms in Southwest Satellite image taken at 6:32 p.m. EDT (AP) Showers fell on parts of the East Coast Tuesday while the southern Plains had more scorching temperatures and the Southwest had thunderstorms. The Northeast had fair skies but farther south, low pressure brought light rain showers to parts of North Carolina and Virginia. Showers and thunderstorms also moved across central Florida.

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