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  2. Felipe F

    Tempo Severo EUA - 2019

    ...THERE IS A HIGH RISK OF SEVERE THUNDERSTORMS ACROSS PARTS OF WEST AND NORTHWEST TEXAS...THE EASTERN TEXAS PANHANDLE AND WESTERN OKLAHOMA... ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS PARTS OF SOUTHEAST NEW YORK AND NEW ENGLAND... ...SUMMARY... An outbreak of strong tornadoes and severe thunderstorms is expected today across parts of the southern and central Plains. In addition, many of the storms will have very large hail and wind damage. The severe threat will be concentrated from west Texas and the Texas Panhandle eastward across Oklahoma, Kansas into western Missouri and western Arkansas. Additional severe storms with wind damage and hail will be possible this afternoon from southeast New York into southern and central New England. ...Tornado Outbreak Expected Across the Southern Plains Today Into Tonight... ...Southern and Central Plains... An impressive and potent upper-level trough will move quickly eastward across the Desert Southwest today as a powerful 75 to 90 knot mid-level jet rounds the base of the trough. Ahead of the system, a corridor of strong instability is forecast across the Southern Plains from west Texas into the eastern Texas Panhandle and eastward into western and central Oklahoma. This combined with steep mid-level lapse rates and strong low-level shear will be very favorable for severe storms. As the mid-level jet ejects northeastward across the southern High Plains this afternoon and evening, a tornado outbreak is likely across the southern Plains. The tornado outbreak is expected to continue into the overnight period. This event should result in a significant threat to life and property. RAP forecast soundings late this afternoon along the instability corridor from Childress, Texas northeastward to Clinton, Oklahoma show MLCAPE values of 3000 to 4500 J/kg with 0-6 km shear in the 50 to 65 kt range. In addition, hodographs are large and looped with 0-1 km shear values in the 30 to 40 kt range. This environment should be very favorable for supercells and tornadoes. 0-3 km storm-relative helicities are forecast to steadily increase from about 300 m2/s2 in the late afternoon to about 450 m2/s2 by early evening as an anomalously strong low-level jet becomes better focused. This will be ideal for a tornado outbreak with strong tornadoes upstream and to the west of the low-level jet. The current thinking concerning the details is that the first round of severe storms will begin early as thunderstorms initiate in west Texas and move northeastward into the eastern Texas Panhandle by mid to late morning. Initially, large hail will be the main threat but as these storms mature, tornadoes will be possible with the stronger and more dominant cells. Additional supercells with tornado potential are expected to initiate near the warm front in western and central Oklahoma. A tornado threat will transition to large hail and wind damage as the storms move into Kansas to the north side of the boundary. This first round of severe storms is forecast to move northeastward, away from the warm sector, allowing for the development of extreme instability during the mid to late afternoon from northwest Texas into southwest Oklahoma. The second round of severe storms is expected to start during the late afternoon as repeat initiation takes place in west Texas. Rapid supercell formation is forecast along the I-27 corridor from the vicinity of Lubbock northward to just south of Amarillo. A cluster of tornadic supercells is then forecast to move northeastward into northwest Texas and the southeastern Texas Panhandle during the early evening. Additional tornadic supercells are forecast to rapidly develop in southwest Oklahoma and move northeastward into west-central Oklahoma. At that time, the strengthening low-level jet will couple with a highly progressive and seasonably strong mid-level jet, making conditions favorable for long-track strong tornadoes and possibly violent tornadoes. The greatest threat for long-track tornadoes will exist along the corridor from near Lubbock northeastward to Childress, Altus, Lawton, Clinton to just west of the Oklahoma City and Enid vicinities. After considerable deliberation, a High risk will be issued for parts of west Texas, the southeastern Texas Panhandle into western Oklahoma. In addition to the tornado threat, conditions will be very favorable for large hail and wind damage. Strong instability, enhanced deep-layer shear and steep mid-level lapse rates will make hailstones of greater than 2 inches in diameter possible with the more intense supercells, mainly in west Texas and the western half of Oklahoma. A wind-damage threat will also exist across much of the southern Plains due to the expected intense nature of the storms. The wind-damage threat, including some gusts above 70 kt, should become widespread during the late evening into the overnight period as squall line organizes and moves quickly eastward across the southern Plains. ...Southeast New York/New England... An upper-level trough will move across southern Quebec and the Northeast today. At the surface, a cold front will advance eastward across New York and into western New England. Ahead of the front, surface dewpoints in the mid 60s F should result in destabilization of the airmass by afternoon from southeast New York into much of southern and central New England. Scattered thunderstorm development is expected around midday along the cold front with this convection moving eastward across the moist sector during the afternoon. Forecast soundings along the instability axis from Springfield, Massachusetts northeastward into Vermont at 21Z show MLCAPE values peaking in the 1000 to 1500 J/kg range and have steep low-level lapse rates. This combined with 0-6 km shear values around 35 kt should be sufficient for multicells with wind damage potential. A few rotating storms with a large-hail threat may also develop. ..Broyles/Wendt.. 05/20/2019
  3. Felipe F

    Tempo Severo EUA - 2019

    DIA 1
  4. Felipe F

    Tempo Severo EUA - 2019

    ALTO RISCO EMITIDO!
  5. Essa onda de frio será que chega com força na região dos lagos?
  6. Tavares

    Tempo Severo EUA - 2019

    Manchetes de um dia normal de Maio em Oklahoma
  7. Felipe F

    Tempo Severo EUA - 2019

    Algumas cidades de Oklahoma cancelaram as aulas amanhã. Rodadas de agora a noite como foi mostrado seguem assustadoras.
  8. A frente fria da semana passada e sua massa polar impactaram as temperaturas em parte do país, mesmo que modestamente podemos considerar como uma pequena onda de frio.
  9. Tavares

    Tempo Severo EUA - 2019

    00Z HRRR 20 horas antes do evento desenha um cenário terrível de tempo severo e ainda amplia a área de atuação das células que se formarão num ambiente bastante favorável pra desenvolver rotação intensa. Um enxame de tornados.
  10. Pedro Victor Peixoto Paulino Pedro Victor

    Monitoramento e Previsão - Brasil/América do Sul - Maio/2019

    Chove com forte intensidade em Fortaleza nesse momento.
  11. Deveras, se a tendência se confirmar, provável que comece o inverno climático, ou ao menos a transição de outono para inverno (vai depender da consistência das temperaturas prox. semanas).
  12. Não tivemos onda de frio esse ano ainda no Brasil.
  13. GFS 18z alinhado com o Europeu. Parece que vai. Tem tudo pra ser uma das ondas de frio mais fortes do ano.
  14. Boa noite! Hoje tivemos tempo nublado até por volta das 15h, depois rapidamente a nebulosidade diminuiu e em coisa de uma hora tínhamos tempo ensolarado, mas friozinho. Os extremos foram comecando e finalizando o dia meteorológico, com 19,8°C de máxima e 12,2°C de mínima. Agora temos céu limpo, 12,2°C, URA de 90%, vento nordeste a 2 km/h e pressao de 1.016 hpa. A nebulosidade deve aumentar nas próximas horas e a segunda deve ser nublada, com possibilidade de chuvas isoladas à tarde e à noite. Será um dia frio, com mínima de 11°C e máxima de 15°C, segundo o SMN. O sol nasce às 7h43 e se poe às 17h56.
  15. Yesterday
  16. NEM TODAS AS ESTAÇÕES ESTÃO DISPONÍVEIS NA NET COM DÉCIMOS, ALGUMAS NÃO APARECEM NADA
  17. Onde? Informe sua localização no campo adequado, amigo! Abraços
  18. Falando nisso, olha os maiores acumulados de chuva registrados(todos na Zona Leste): Maiores índices pluviométricos das estações meteorológicas do CGE: Aricanduva/Vila Formosa 61,4mm São Mateus 49,0mm Penha - Rincão 30,2mm Itaquera 16,0mm Mooca 14,4mm Vila Prudente 10,5mm Maiores índices pluviométricos da rede telemétrica do Alto Tietê: Rio Aricanduva - Shopping 61,2mm Rio Aricanduva - Av. Itaquera 56,8mm Rio Aricanduva - Av. Ragueb Chohfi 49,0mm Rio Aricanduva - Rua Alfredo Frazão 36,6mm Córrego Franquinho - Av. Dom Hélder Câmara 31,5mm O Córrego Aricanduva realmente transbordou.
  19. Essa baixa pressão que está gerando esse ciclone subtropical é justamente aquele sistema que provocou chuva extrema em Vitória ontem.
  20. Participem!! Importante para a realização de novos mini bolões para as próximas mps importantes.
  21. O Servicio Meteorológico Nacional estava prevendo uma semana com mínimas de 10 a 13°C aqui em Buenos Aires, exceto quinta, que punham 8°C. Para as máximas, colocavam sempre entre 18 e 20°C a semana toda. Agora entrei, saiu a nova atualizacao e o panorama melhorou bastante: Parece que finalmente vem uma semana fria! Agora por aqui céu limpo e 15,3°C.
  22. Peguei essa chuva hj na Serra da Cantareira , me surpreendeu pois foi como uma chuva de verão mesmo ...embora a temperatura tenha estado super agradável hj !!!
  23. Este aqui está funcionando: http://api.wunderground.com/personal-weather-station/dashboard?ID=INOVATRE2
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