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April 12 Severe Event


joshwx2003
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6 minutes ago, cheese007 said:

Would be first EF5 since the Moore, OK tornado of 2013. Feels like that was another century...

If so, it would put an end to the EF5 "drought" we have been in. A new record would  be made if we were to make it to July 2021 without any EF5s.

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https://www.spc.noaa.gov/products/md/md0370.html

Mesoscale Discussion 0370
   NWS Storm Prediction Center Norman OK
   0756 PM CDT Sun Apr 12 2020

   Areas affected...Much of Arkansas...western Tennessee...northwestern
   Mississippi...northern Louisiana...and northeastern Texas

   Concerning...Severe Thunderstorm Watch 111...

   Valid 130056Z - 130300Z

   The severe weather threat for Severe Thunderstorm Watch 111
   continues.

   SUMMARY...Damaging wind and hail will likely continue for the next
   couple hours across remaining portions of WW 111 and WW 108.  A
   downstream WW will be considered pending convective trends.

   DISCUSSION...Storms with a history of damaging wind gusts continue
   with bowing segments/embedded rotation in an extensive linear
   segment moving through central/north-central Arkansas at this time. 
   These storms should affect the Little Rock Metro area over the next
   half hour or so. These storms are moving quickly east-northeastward
   and should reach the eastern extent of WW 111 in Arkansas by around
   0230Z or so.  CAMs suggest that this activity will hold together
   beyond that time frame, with intensity in question as the downstream
   airmass has been overturned from prior convection.  Nevertheless,
   forcing aloft with the vigorous upstream impulse may result in at
   least an isolated severe threat after 230Z in downstream areas.  A
   new Watch may be needed and will be coordinated with downstream
   offices beforehand.

   Farther south, cells/clusters in northern Louisiana and northeast
   Texas have also produced wind damage and hail, and these trends
   should continue through the next couple hours as well.

   ..Cook.. 04/13/2020

   ...Please see www.spc.noaa.gov for graphic product...

   ATTN...WFO...PAH...MEG...JAN...LZK...SGF...SHV...

 

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Interesting SPS from FFC:

853 PM EDT Sun Apr 12 2020

...SIGNIFICANT WEATHER ADVISORY FOR CHATTOOGA...SOUTHERN WALKER...
SOUTHWESTERN GORDON AND FLOYD COUNTIES UNTIL 915 PM EDT...

At 851 PM EDT...National Weather Service doppler radar indicated a
weak storm with rotation over Watson, or near Little River Canyon
National Preserve...moving northeast at 60 mph.

  HAZARD...enhanced risk of a brief tornado.

  IMPACT...Storms have exhibited localized rotation. A brief tornado
           could quickly form.
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23 minutes ago, janetjanet998 said:

some of the reflective blips seem be being pulled NNW near Tuscaloosa

being sucked into this developing meso at the time

that was cool

ULLETIN - EAS ACTIVATION REQUESTED  
TORNADO WARNING  
NATIONAL WEATHER SERVICE BIRMINGHAM AL  
815 PM CDT SUN APR 12 2020  
  
THE NATIONAL WEATHER SERVICE IN BIRMINGHAM HAS ISSUED A  
  
* TORNADO WARNING FOR...  
  NORTHWESTERN WALKER COUNTY IN CENTRAL ALABAMA...  
  EASTERN WINSTON COUNTY IN NORTHWESTERN ALABAMA...  
  
* UNTIL 900 PM CDT.  
      
* AT 815 PM CDT, A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO  
  WAS LOCATED OVER CARBON HILL, MOVING NORTHEAST AT 40 MPH.  
  
  HAZARD...TORNADO.  

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Dews in  GA are closing in on 80- 90% with pressure falls of 4-6 mb's over the last 4-6 hours.  Going to be interesting to see how this current line and anything that might pop in front of it interacts as it moves into eastern AL and GA.  Eastward progression should slow somewhat as the upper energy begins to pivot NE giving some of these cells more time in a still unstable air mass.  There's still plenty of potential energy out there.  I wouldn't be surprised to see the line currently moving into southern AL begin to become somewhat more discreet as it moves NE through pretty much untouched instability through central AL and central GA.

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Storm in the Tuscaloosa/Northport area seems to have that supercellular look to it.

EDIT: just as I said that a severe thunderstorm warning comes out.  Storm motion is towards Birmingham, although the orientation of the polygon is pointed more towards Hoover and the southern Birmingham metro area (possibly taking into account a right turn).

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EVERE WEATHER STATEMENT  
NATIONAL WEATHER SERVICE BIRMINGHAM AL  
818 PM CDT SUN APR 12 2020  
  
ALC127-133-130200-  
/O.CON.KBMX.TO.W.0031.000000T0000Z-200413T0200Z/  
WALKER AL-WINSTON AL-  
818 PM CDT SUN APR 12 2020  
  
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 900 PM CDT FOR  
NORTHWESTERN WALKER AND EASTERN WINSTON COUNTIES...  
          
AT 818 PM CDT, A CONFIRMED TORNADO WAS LOCATED NEAR CARBON HILL,  
MOVING NORTHEAST AT 40 MPH.  
  
HAZARD...DAMAGING TORNADO.  
  
SOURCE...RADAR CONFIRMED TORNADO.  
  

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BULLETIN - EAS ACTIVATION REQUESTED  
TORNADO WARNING  
NATIONAL WEATHER SERVICE BIRMINGHAM AL  
832 PM CDT SUN APR 12 2020  
  
THE NATIONAL WEATHER SERVICE IN BIRMINGHAM HAS ISSUED A  
  
* TORNADO WARNING FOR...  
  CENTRAL TUSCALOOSA COUNTY IN WEST CENTRAL ALABAMA...  
  SOUTHWESTERN JEFFERSON COUNTY IN CENTRAL ALABAMA...  
  
* UNTIL 915 PM CDT.  
      
* AT 832 PM CDT, A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO  
  WAS LOCATED OVER HOLT, MOVING EAST AT 50 MPH.  
  
  HAZARD...TORNADO.  
  
  SOURCE...RADAR INDICATED ROTATION.  
  
  IMPACT...FLYING DEBRIS WILL BE DANGEROUS TO THOSE CAUGHT WITHOUT   
           SHELTER. MOBILE HOMES WILL BE DAMAGED OR DESTROYED.   
           DAMAGE TO ROOFS, WINDOWS, AND VEHICLES WILL OCCUR.  TREE   
           DAMAGE IS LIKELY.  
  
* LOCATIONS IMPACTED INCLUDE...  
  SOUTHWESTERN BIRMINGHAM, TUSCALOOSA,

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