Luis Calebe Paglioza Posted August 11, 2005 at 12:02 AM Share Posted August 11, 2005 at 12:02 AM Bazianos... esse tópico eh pra quem ñ conhece mto bem os tipos de tempestades... Tipos de Tempestades Severas: Gust Fronts A cold downdraft of air and precipitation, causing sudden wind changes in direction and velocity, when a storm is about to pass over. Gust fronts can take many shapes and forms, from being much invisible except for a precipitation curtain, to highly turbulent dust clouds near the ground. The gust front is usually very transient in form: it travels fast and changes appearance quickly. Haboobs A haboob is a duststorm or sandstorm as they sometimes occur in the deserts. The outflow of cool air from thunderstorms can create similar duststorms, when the cool downdraft of air reaches ground and has to spread out along the surface. Gustfronts are usually responsible for these sandstorms. More generally, haboobs form late in the evening due to thermal gradients in the lower atmosphere, caused by extreme daytime heating, and last one or more hours. Hail fallstreaks Near the updraft area of a strong or severe storm, one can usually see hail fallstreaks, as distinct, white streaks. These streaks look different (and have higher brightness) than rain fallstreaks, which tend to be darker. Falling hail need not always be visible: especially if the stones are very large, their number density is low and the hailstreaks are not seen well or at all. Roll clouds Storms are sometimes accompanied by arcus, a roll cloud. Cold air rushes out of a downdraft and lifts warmer air in front of the storm complex up to condensation level, making both a fascinating and menacing sight while it is approaching at high velocity. Scud clouds Fractocumulus-like cloud rags, sometimes appearing in the precipitation region of a storm. They are caused by condensation of water vapor in air below the cloud base, due to the high air moisture in the precipitation region. Shelf clouds A shelf cloud is similar to lenticularis cloud, but on a much larger scale. A shelf cloud sometimes forms ahead of a severe, long-lasting thunderstorm such as a mesoscale convective system (MCS), multicell or supercell. Cold downdraft air surges out along the surface and lifts the (usually conditionally stable) warm air ahead of the storm up to condensation level. A smooth shelf-like cloud forms, skirting the thunderstorm. The shelf cloud is usually accompanied by a gustfront and sometimes also a roll cloud. Storm skyscapes This gallery shows some unusual, spectacular or beautiful skies connected to stormy weather. The clouds before or after the passage of a storm can exhibit quite strange forms and shapes, especially when they are seen around sunset. Tail clouds A tail cloud is sometimes seen attached to the wall cloud of a severe thunderstorm. The tail cloud originates from the area of the downdraft, which has a high moisture content due to the precipitation. Tornados A tornado is a funnel cloud, or vortex, of spinning air, water vapor and sometimes dust and debris. The word tornado is usually reserved for the funnel cloud spawned by supercell storms; other funnel clouds are called spouts. Tornadoes can form out of supercell storms if the updraft (the mesocyclone) rotates and creates enough air vorticity with respect to the flanking downdraft area. This vorticity, if the airflow pattern in the storm is balanced well, can be enhanced and concentrated, forming a low-pressure vortex at the perimeter of the mesocyclone and ultimately the tornado. The tornado becomes visible below cloud base due to condensation of the lower pressure air. Updraft cumulus At well-organized storms, the updraft is usually visible at the flank of the storm, where the flanking line connects to the storm tower. If the storm is severe, one can usually visually see the updraft cumulus grow towards the anvil of the storm explosively. Updraft towers are sometimes accompanied by clear hail fallstreaks. Generally, the stronger the updraft, the larger the hail which will fall out of it. Next to the updraft is usually a downdraft (rainfall). Updraft turrets In some cases of explosive updraft velocities, the cumuliform cloud exhibits so-called turrets: grooves in between cumulus. The cloud then grows so quickly that the cumuliform cloud has no time to expand in all directions at once, and the turrets are formed. Turrets are most frequently seen high up in the updraft towers in severe thunderstorms, which are in their maturing phase. Wall clouds Severe thunderstorms have a well-defined structure of updraft and downdraft (with precipitation), situated next to eachother. Cool humid air from the downdraft may flow to the updraft, moistening the air and lowering the cloud base under the updraft. This lowering, the wall cloud, may be enhanced by large-scale rotation of the updraft itself. Well-defined wall clouds usually have the form of a straight wall, more commonly wall clouds look like triangle-shaped sockets of cloud under the thunderstorm base. Whale's mouth The whale's mouth-effect is the weird-looking sky sometimes appearing when the first gust front of a storm is passing over. The cold downdraft of air of the storm rushes outward and forward along the surface, and lifts the warmer air in the direct vicinity of the storm over its condensation level. One gets to see the back side of this mini cold front, and the inside of the gust front cloud. It looks somewhat like mammatus and other forms of turbulent cloud masses, sometimes showing very neat ordering. sds. ___________________________________ Jesus Cristo... o Senhor dos céus e do tempo! RockNRoll a REVOLUÇÃO da Música :rock: Quote Link to comment Share on other sites More sharing options...
Jaqueline Posted August 11, 2005 at 12:32 AM Share Posted August 11, 2005 at 12:32 AM Nossa! Que bom gosto Calebe!!!! Você é extremamente educativo, fico grata pela organização, nem meus livros de tormentas e tornados tem imagens tão lindas! Impressão direta! Obrigadão, Abraços, Quote Link to comment Share on other sites More sharing options...
Paulo Roberto A. Bezerra Posted August 11, 2005 at 12:49 AM Share Posted August 11, 2005 at 12:49 AM Sequência belíssima!! As fotos 2,3,4 e 5 são fantásticas, dão a impressão de que a tempestade não tem fim. Saudações Quote Link to comment Share on other sites More sharing options...
Guest Posted August 11, 2005 at 01:40 AM Share Posted August 11, 2005 at 01:40 AM Lindo, bonito trabalho Quote Link to comment Share on other sites More sharing options...
Luis Calebe Paglioza Posted August 11, 2005 at 01:52 AM Author Share Posted August 11, 2005 at 01:52 AM Nossa! Que bom gosto Calebe!!!! Você é extremamente educativo, fico grata pela organização, nem meus livros de tormentas e tornados tem imagens tão lindas! Impressão direta! Obrigadão, Abraços, Jaque, eu q agradeço :lol: ... vou fazer o possível pra tirar algumas fotos amanhã... vou tentar pegar os melhores ângulos pra postar no BAZ... abraços sds ___________________________________ Jesus Cristo... o Senhor dos céus, do tempo... o Sol da Justiça! RockNRoll a REVOLUÇÃO da Música :rock: Quote Link to comment Share on other sites More sharing options...
Luis Calebe Paglioza Posted August 11, 2005 at 01:53 AM Author Share Posted August 11, 2005 at 01:53 AM Sequência belíssima!!As fotos 2,3,4 e 5 são fantásticas, dão a impressão de que a tempestade não tem fim. Saudações Paulo, eh msmo... hehehe :lol: ... adorei essas fotos... por isso postei no BAZ 8) ... abraços sds ___________________________________ Jesus Cristo... o Senhor dos céus, do tempo... o Sol da Justiça! RockNRoll a REVOLUÇÃO da Música :rock: Quote Link to comment Share on other sites More sharing options...
Luis Calebe Paglioza Posted August 11, 2005 at 01:54 AM Author Share Posted August 11, 2005 at 01:54 AM Lindo, bonito trabalho Alexandre, valew :lol: !!! abraços sds Quote Link to comment Share on other sites More sharing options...
Samuel Albuquerque Posted August 12, 2005 at 02:31 PM Share Posted August 12, 2005 at 02:31 PM UAUUUU, CALEBE!!! :shock: Minha vontade é postar elogiando cada uma dessas imagens!!! Show!!! Abraços! Quote Link to comment Share on other sites More sharing options...
Luis Calebe Paglioza Posted August 12, 2005 at 10:53 PM Author Share Posted August 12, 2005 at 10:53 PM Samuk, bah... mto show essas fotos neh?... a 1ª, 2ª, 3ª e 4ª estão de arrepiar :shock: abraços sds ___________________________________ Jesus Cristo... o Senhor dos céus, do tempo... o Sol da Justiça! RockNRoll a REVOLUÇÃO da Música :rock: Quote Link to comment Share on other sites More sharing options...
Samuel Albuquerque Posted August 13, 2005 at 01:21 PM Share Posted August 13, 2005 at 01:21 PM Pois é, Calebe... As que me deram mais medo foram a 1, 2, 3, 4 e 5. Sds. Quote Link to comment Share on other sites More sharing options...
Samuel Albuquerque Posted August 13, 2005 at 01:21 PM Share Posted August 13, 2005 at 01:21 PM Ops... Postei 2 vezes... :oops: Mas pra não perder a viagem, a mais temerosa foi a 4ª foto! Sds. Quote Link to comment Share on other sites More sharing options...
Alexandre Aguiar Posted August 13, 2005 at 02:16 PM Share Posted August 13, 2005 at 02:16 PM Tua grande mensagem do BAZ até hoje !!! Sensacional contribuição. Quote Link to comment Share on other sites More sharing options...
Luis Calebe Paglioza Posted August 13, 2005 at 03:23 PM Author Share Posted August 13, 2005 at 03:23 PM Tua grande mensagem do BAZ até hoje !!! Sensacional contribuição. puxa... valew Climatologia :lol: ... eh uma honra poder postar trabalhos q ajudem o BAZ... em breve estarei postando mais :wink: ... abraços sds ___________________________________ Jesus Cristo... o Senhor dos céus, do tempo... o Sol da Justiça! RockNRoll a REVOLUÇÃO da Música :rock: Quote Link to comment Share on other sites More sharing options...
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