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cheese007

Severe Weather April 6th-10th 2021

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7 minutes ago, Powerball said:

Well damn. It looks like the cap is gone too.

5K CAPE :o

And yeah, these other storms developing, particularly the one near Rowlett/northeastern Dallas county have given me a couple rumbles of thunder.

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Severe Thunderstorm Warning
TXC113-100200-
/O.NEW.KFWD.SV.W.0065.210410T0059Z-210410T0200Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Fort Worth TX
759 PM CDT Fri Apr 9 2021

The National Weather Service in Fort Worth has issued a

* Severe Thunderstorm Warning for...
  Central Dallas County in north central Texas...

* Until 900 PM CDT.

* At 758 PM CDT, a severe thunderstorm was located near Rowlett,
  moving east at 20 mph. Another severe thunderstorms was located
  near Cockrell Hill moving east at 20 mph.

  HAZARD...60 mph wind gusts and quarter size hail.

  SOURCE...Radar indicated.

  IMPACT...Hail damage to vehicles is expected. Expect wind damage
           to roofs, siding, and trees.

* Locations impacted include...
  Dallas, Garland, Irving, Grand Prairie, Mesquite, Carrollton,
  Richardson, Rowlett, Wylie, Duncanville, Lancaster, Farmers Branch,
  University Park, Sachse, Addison, Highland Park, Cockrell Hill and
  Buckingham.

This includes the following highways...
 Interstate 35E between mile markers 418 and 440.
 Interstate 20 between mile markers 467 and 471.
 Interstate 30 between mile markers 34 and 57.
 Interstate 45 between mile markers 276 and 284.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection get inside a sturdy structure and stay away from
windows.

&&

LAT...LON 3298 9652 3262 9676 3272 9704 3299 9685
TIME...MOT...LOC 0058Z 283DEG 17KT 3288 9659

HAIL...1.00IN
WIND...60MPH
$$

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   Mesoscale Discussion 0354
   NWS Storm Prediction Center Norman OK
   0821 PM CDT Fri Apr 09 2021

   Areas affected...parts of north Texas

   Concerning...Severe Thunderstorm Watch 82...

   Valid 100121Z - 100415Z

   The severe weather threat for Severe Thunderstorm Watch 82
   continues.

   SUMMARY...Sporadic cells capable of large hail remain possible
   within WW 82. A squall line is expected to back build southwestward
   along the front later this evening, with damaging wind potential
   into north Texas.

   DISCUSSION...The 00Z FWD sounding shows strong instability, with
   very steep lapse rates aloft and around 3500 J/kg MLCAPE. The
   hodograph is mostly straightline, supporting splitting cells in the
   Dallas area.

   A strong cold front is currently surging southeast across southern
   OK and into northwest TX. A squall line is taking shape over
   southern OK, and further back building is expected as the strong
   convergence interacts with the more unstable air mass south of the
   Red River. Therefore, in addition to a hail threat in the short
   term, a damaging wind threat may take shape over the next several
   hours. It is difficult to determine how far southwest the squall
   line will build, but portions of the I-35 corridor may be at risk
   this evening.

   ..Jewell.. 04/10/2021

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

   ATTN...WFO...SHV...TSA...FWD...OUN...

   LAT...LON   31449788 32719731 33449692 33959680 34149637 34099567
               33829523 32859547 31869575 31519628 31219703 31129752
               31449788 

image.png

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For perspective, baseball-sized hail is only 2.75" in diameter:

0104 300 ITALY ELLIS TX 3219 9689 IMAGE OF MEASURED 3 INCH HAIL. (FWD)

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19 minutes ago, Witness Protection Program said:

That one across southeast Dallas County looked amazing from 25 miles away in far west Plano.  You had to break your neck to tilt back far enough to see the tops around 7:45 tonight.

Kind of wish I had gone earlier, but took some video of lightning and storm pics for the first time about 20 minutes ago. It's not really post-worthy, but I'm just glad I was able to go out for the first time this year to see a storm.

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2 minutes ago, MUWX said:

Large tornado on the ground in Mississippi 

Yup, am just now seeing pictures from a live stream. Looks like a wedge.

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Severe Weather Statement
National Weather Service Memphis TN
858 PM CDT Fri Apr 9 2021

MSC017-095-100230-
/O.CON.KMEG.SV.W.0096.000000T0000Z-210410T0230Z/
Chickasaw MS-Monroe MS-
858 PM CDT Fri Apr 9 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 930 PM CDT
FOR CENTRAL CHICKASAW AND MONROE COUNTIES...

At 858 PM CDT, a severe thunderstorm was located near Prairie, or
near Aberdeen, moving east at 50 mph.

This is a very dangerous storm.

HAZARD...90 mph wind gusts.

SOURCE...Radar indicated.

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This was perhaps the best radar image of the Brandon Mississippi area tornado. It is possible that it moved northwards or NNE-wards for a couple of miles near Pelahatchie.

JrpfatL.jpg

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10 minutes ago, CheeselandSkies said:

Does anyone find odd the lack of any tornado watches covering a 10% hatched area on the convective outlook? Especially since they routinely issue red boxes for 5% contours.

Well, I noticed a lot of SVR watches over the 10% but a TOR watch just got issued for basically the 10% hatched area. Still also found the earlier watches a bit unusual, but given how I can really only recall one tornado actually confirmed at this point in time, I guess it was the correct decision overall. Hoping we don't have any strong tornadoes overnight given that the ingredients are still favorable over southern LA/MS where the new tornado watch just got issued, going until 7 AM.

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9 hours ago, TexMexWx said:

Well, I noticed a lot of SVR watches over the 10% but a TOR watch just got issued for basically the 10% hatched area. Still also found the earlier watches a bit unusual, but given how I can really only recall one tornado actually confirmed at this point in time, I guess it was the correct decision overall. Hoping we don't have any strong tornadoes overnight given that the ingredients are still favorable over southern LA/MS where the new tornado watch just got issued, going until 7 AM.

LOL, they must have issued that right after I posted and went to bed. Sounds like there was a destructive tornado at Palmetto, LA although it doesn't show as a tornado on the SPC LSR page...yet.

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20 minutes ago, CheeselandSkies said:

Sounds like there was a destructive tornado at Palmetto, LA

Reports of 8 homes destroyed (construction quality obviously pending for rating purposes), 1 fatality, and multiple injuries from there :(

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2 minutes ago, TexMexWx said:

Reports of 8 homes destroyed (manufactured/mobile homes?), 1 fatality, and multiple injuries from there :(

Yeah, I was just watching the aerial video on that linked from Talkweather. Based on the street he named and looking at Google Maps, it looks like it actually missed Palmetto proper to the south. There's a school, post office, two churches, and several businesses in addition to many more homes there.

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I don't recall there ever being so many hail reports in a day (I'm sure there has been, but it doesn't happen often), especially spread across such a wide area and outpacing wind reports 2-to-1.

image.png.19963b496437c663d404ed921a79de73.png

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