[03-04/09/2023] Chuva intensa no RS

Além do tempo severo generalizado, houve chuva intensa em partes do centro e norte do RS entre os dias 3 e 4/09. Algumas cidades registraram enchentes significativas, principalmente no centro do RS. 

O intenso cavado em médios níveis que favoreceu a sequência de tempo severo e chuva intensa é impressionante pela localização em latitudes bastante baixas (vou utilizar 0600 UTC do dia 04 como exemplo.. Não é muito comum ver um cavado anômalo que se estende até o sul da Bolívia e se move para leste. Geralmente os cavados migratórios que se movem para leste ocorrem mais a sul. Além disso, o cavado tem um eixo bastante acentuado, ou seja, não é um cavado “suave”. Isso gera um jato bastante meridional (mais abaixo), favorecendo levantamento mais intenso na dianteira do cavado. As duas cristas anômalas corrente acima e corrente abaixo do cavado possivelmente tiveram um papel importante neste caso.

Com isso, houve escoamento muito intenso em baixos níveis na dianteira do cavado e amplo transporte de umidade em direção ao Sul do Brasil. O escoamento em 700 hPa, por exemplo, estava acima de 50 kt na madrugada do dia 04 (abaixo). Chama a atenção também a enorme área com vento > 50 kt. O jato de baixos níveis também era bastante profundo, o que causou eficiente transporte de umidade. Como exemplo, o transporte de vapor d’água integrado (abaixo) estava bastante intenso.

Como resultado desta situação “anomalamente dinâmica” e o amplo transporte de umidade, o ambiente onde ocorreu chuva intensa era caracterizado por anomalias de água precipitável perto de 3 desvios padrão.

O levantamento era bastante intenso na saída do jato de baixos níveis, conforme mostrado em contornos azuis no campo de vento em 700 hPa e água precipitável mais acima. Além disso, o levantamento também era favorecido pelo jato de altos níveis, cuja entrada equatorial, onde ocorrem circulações ageostróficas favoráveis a movimento ascendente, se posicionava sobre a região.

O ambiente bastante úmido, o levantamento intenso associado ao cavado + advecção quente na saída do jato de baixos níveis, e a presença de CAPE favorável a tempestades convectivas, causaram altas taxas de precipitação. 

Um tópico interessante para pesquisa é a relação do formato do cavado em médios níveis com as condições de tempo corrente abaixo. Este caso é um tanto atípico, pois o cavado estava bastante a norte e era bem acentuado. Quão comum é este tipo de cavado? Esta configuração está sempre associada a maior potencial de eventos extremos (tempo severo e chuva intensa), ou este caso representou uma improvável combinação de fatores?

198 pensou em “[03-04/09/2023] Chuva intensa no RS

  1. binance Sign Up

    I don’t think the title of your article matches the content lol. Just kidding, mainly because I had some doubts after reading the article.

  2. 100

    Can you be more specific about the content of your article? After reading it, I still have some doubts. Hope you can help me.

  3. 註冊binance

    Thank you for your sharing. I am worried that I lack creative ideas. It is your article that makes me full of hope. Thank you. But, I have a question, can you help me?

  4. binance

    Can you be more specific about the content of your article? After reading it, I still have some doubts. Hope you can help me.

  5. бнанс

    Can you be more specific about the content of your article? After reading it, I still have some doubts. Hope you can help me.

  6. Tài khon binance

    Thank you for your sharing. I am worried that I lack creative ideas. It is your article that makes me full of hope. Thank you. But, I have a question, can you help me?

  7. binance

    I don’t think the title of your article matches the content lol. Just kidding, mainly because I had some doubts after reading the article.

  8. Тркелу

    Can you be more specific about the content of your article? After reading it, I still have some doubts. Hope you can help me.

  9. Anônimo

    Thank you for your sharing. I am worried that I lack creative ideas. It is your article that makes me full of hope. Thank you. But, I have a question, can you help me?

  10. Anônimo

    I don’t think the title of your article matches the content lol. Just kidding, mainly because I had some doubts after reading the article.

  11. open binance account

    Thank you for your sharing. I am worried that I lack creative ideas. It is your article that makes me full of hope. Thank you. But, I have a question, can you help me?

  12. binance

    I don’t think the title of your article matches the content lol. Just kidding, mainly because I had some doubts after reading the article.

  13. Binance注册

    Thank you for your sharing. I am worried that I lack creative ideas. It is your article that makes me full of hope. Thank you. But, I have a question, can you help me?

  14. Anônimo

    Thank you for your sharing. I am worried that I lack creative ideas. It is your article that makes me full of hope. Thank you. But, I have a question, can you help me?

  15. joseph albert

    Creating the right atmosphere for the holidays includes capturing cherished moments with christmas family outfits for pictures This festive touch enhances the joy of spending time together, creating lasting memories and strengthening family bonds during the warm, welcoming atmosphere of the holiday season.

  16. binance

    I don’t think the title of your article matches the content lol. Just kidding, mainly because I had some doubts after reading the article.

  17. Anônimo

    I don’t think the title of your article matches the content lol. Just kidding, mainly because I had some doubts after reading the article.

  18. Anônimo

    Can you be more specific about the content of your article? After reading it, I still have some doubts. Hope you can help me.

  19. binance code

    I don’t think the title of your article matches the content lol. Just kidding, mainly because I had some doubts after reading the article.

  20. binance

    Thank you for your sharing. I am worried that I lack creative ideas. It is your article that makes me full of hope. Thank you. But, I have a question, can you help me?

  21. Rejestracja

    Can you be more specific about the content of your article? After reading it, I still have some doubts. Hope you can help me.

  22. binance "oppna konto

    Thank you for your sharing. I am worried that I lack creative ideas. It is your article that makes me full of hope. Thank you. But, I have a question, can you help me?

  23. Anônimo

    Thank you for your sharing. I am worried that I lack creative ideas. It is your article that makes me full of hope. Thank you. But, I have a question, can you help me?

  24. binance

    Can you be more specific about the content of your article? After reading it, I still have some doubts. Hope you can help me.

  25. binance

    Can you be more specific about the content of your article? After reading it, I still have some doubts. Hope you can help me.

  26. Registrati su binance

    Thank you for your sharing. I am worried that I lack creative ideas. It is your article that makes me full of hope. Thank you. But, I have a question, can you help me?

  27. binance account

    I don’t think the title of your article matches the content lol. Just kidding, mainly because I had some doubts after reading the article.

  28. binance

    I don’t think the title of your article matches the content lol. Just kidding, mainly because I had some doubts after reading the article.

  29. Buat Akun di Binance

    Thank you for your sharing. I am worried that I lack creative ideas. It is your article that makes me full of hope. Thank you. But, I have a question, can you help me?

  30. Binance代码

    Thank you for your sharing. I am worried that I lack creative ideas. It is your article that makes me full of hope. Thank you. But, I have a question, can you help me?

  31. Registrera

    Thank you for your sharing. I am worried that I lack creative ideas. It is your article that makes me full of hope. Thank you. But, I have a question, can you help me?

  32. Anônimo

    I don’t think the title of your article matches the content lol. Just kidding, mainly because I had some doubts after reading the article.

Deixe um comentário

O seu endereço de e-mail não será publicado. Campos obrigatórios são marcados com *