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Brasil Abaixo de Zero

Tempo Severo EUA/2019

Felipe F

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  • 1 month later...

Janeiro 2019 terminou com 19 tornados, abaixo da média de 35.

Fevereiro que é o mês menos ativo, com média de apenas 29, tem sido muito ativo nos últimos anos e em 2019 parece que não vai ser diferente.

Hoje e amanhã temos a possibilidade de alguns tornados nos estados de OK, TX, MO, AR, TN, IL e KY. 

Modelos começam indicar algo significativo para próxima terça, seguimos acompanhando. 


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Aproximadamente 80 reports de granizo e ventos fortes desde ontem.

Um breve tornado foi reportado próximo de Decker, IN.



Spotr 3 miles N of DECKER, IN @ 16:50 UTC TOR>-Rain-wrapped tornado crossing U.S. 41 1 mile south of Airport road, semi over turned, debr

Spotr 4 miles NW of DECKER, IN @ 17:46 UTC TOR>-Irrigation unit over turned, several trees uprooted.

Spotr 4 miles NW of DECKER, IN @ 17:51 UTC TOR>-Several high tension power line towers collapaed, irrigation unit over turned.



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  • 2 weeks later...

Tá achegando aquela época do ano.

Prognóstico para sábado, dia 23 de fevereiro


 There appears increasing consensus, within and among the various
   model output, that this feature will provide support for strong
   surface cyclogenesis to the lee of the southern Rockies by this
   weekend.  Guidance generally indicates that the cyclone center will
   rapidly migrate from the Texas/Oklahoma Panhandle region into the
   Great Lakes on Saturday.  This probably will include intensifying
   lower/mid tropospheric flow (to 50-70 kt in the 850-500 mb layer)
   across an evolving warm sector boundary layer that will become at
   least weakly unstable, across lower portions of the southern Plains
   through the mid to lower Mississippi Valley region.  This
   environment may become conducive to the evolution of an organized
   mesoscale convective system, and perhaps discrete supercell
   development ahead of it, accompanied by the risk for damaging wind
   gusts and tornadoes.  

   It remains unclear whether destabilization eastward and
   southeastward, toward the Mid Atlantic and Southeast, on Sunday will
   remain sufficient to support an appreciable continuing severe
   weather threat.
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   0650 AM CST SAT FEB 23 2019

   ...Severe thunderstorms expected over parts of the Parts of the
   Tennessee and lower Mississippi Valleys this afternoon and

     Northern Mississippi
     Southern parts of western and middle Tennessee
     Northwestern Alabama

   * HAZARDS...
     Several tornadoes, a few intense
     Scattered damaging winds
     Isolated large hail

   * SUMMARY...
     A few strong tornadoes, as well as damaging winds and isolated
     large hail, will be possible this afternoon and evening
     primarily across parts of Mississippi, Alabama, and Tennessee.

   Preparedness actions...

   Review your severe weather safety procedures for the possibility
   of dangerous weather today. Stay tuned to NOAA Weather Radio, 
   weather.gov, or other media for watches and warnings. A tornado
   watch means that conditions are favorable for tornadoes to form
   during the next several hours. If a tornado warning is issued for
   your area, move to a place of safety, ideally in a basement or
   interior room on the lowest floor of a sturdy building.
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Segundo o SPC, essas tempestades que entrarão no Alabama encontrarão o "ambiente mais favorável do dia"



   Convection currently moving out of eastern MS into western AL and
   south-central TN will encounter the best environment of the day,
   with regional VWP data indicating increased flow through the lowest
   3km over over the last 30-60 min. Weak backed low level flow has
   also been noted in this narrow corridor as well. This should help to
   maximize low level shear in axis of greatest heating and
   instability. As such, the greatest severe threat, and tornado
   potential, will exit the next few hours, mainly across west-central
   into northwest AL and adjacent south-central TN.  In fact, recent
   LSR from MEM confirmed a tornado had been sighted in Alcorn County.
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