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Tallis Rockwell

Severe weather for 10/21-10/23

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This is about 5 miles south of my location by St. Marks School. Whole area is heavily populated and am dreading what morning will bring. Also worth noting this thing didn't even occur in either the enhanced or hatched risk areas

IMG_20191020_224413.jpg

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7 minutes ago, cheese007 said:

This is about 5 miles south of my location by St. Marks School. Whole area is heavily populated and am dreading what morning will bring. Also worth noting this thing didn't even occur in either the enhanced or hatched risk areas

Definitely a significant tornado for sure.  The monetary damages will probably be quite high as this tornado moved through an affluent neighborhood (Preston Hollow area), but less so than if this tornado had moved through a major commercial district (such as the one at 635 and the Tollway).  I just hope that everyone in the path is okay, though hearing reports of building collapses leaves me at least somewhat pessimistic.

The northernmost area of DFW (Denton, Frisco, etc.) was actually under the enhanced and hatched risk, so it was close.

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Dunno how accurate this is but the Home Depot near 75 and coit has definitely been mentioned as being destroyed so that part checks out

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If that map is accurate, Texas Instruments headquarters may have been hit. They're just northeast of the Home Depot that was destroyed, and right in the middle of the blue path.

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1 minute ago, Hollie Maea said:

If that map is accurate, Texas Instruments headquarters may have been hit. They're just northeast of the Home Depot that was destroyed, and right in the middle of the blue path.

Richland College might also have taken a direct hit. Also here is an update from DFW scanner

 

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18 minutes ago, cheese007 said:

 

Dunno how accurate this is but the Home Depot near 75 and coit has definitely been mentioned as being destroyed so that part checks out

So far, from what I've heard and seen from videos, this tornado was a stovepipe rather than a wedge.  Some of the traffic backups, of course, would extend outside of the damaged area.  The question will be where the damage path is within that blue area.

That's not to say you can't get damage well away from the visible tornado itself (since the width of the tornadic winds can extend outside that) or even straight-line wind damage from a rear-flank downdraft.

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And here comes Round 2.  There's already been so much damage that I hope things don't get worse, but this line is turning quite severe pretty rapidly.

Quote
Severe Thunderstorm Warning
TXC121-367-439-497-210545-
/O.NEW.KFWD.SV.W.0334.191021T0441Z-191021T0545Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Fort Worth TX
1141 PM CDT Sun Oct 20 2019

The National Weather Service in Fort Worth has issued a

* Severe Thunderstorm Warning for...
  Southeastern Wise County in north central Texas...
  Southern Denton County in north central Texas...
  Parker County in north central Texas...
  Northern Tarrant County in north central Texas...

* Until 1245 AM CDT.

* At 1140 PM CDT, a line of severe thunderstorms was located from
  near Denton to Mineral Wells, moving east at 40 mph.  A 75 mph
  wind gust was reported at Mineral Wells Airport in the last few
  minutes.

  HAZARD...70 mph wind gusts.

  SOURCE...Radar indicated.

  IMPACT...Expect considerable tree damage. Damage is likely to
           mobile homes, roofs, and outbuildings.

* Locations impacted include...
  Fort Worth, Arlington, Denton, Lewisville, Flower Mound, Euless,
  Bedford, Grapevine, Haltom City, Keller, Hurst, The Colony,
  Southlake, Weatherford, Watauga, Colleyville, Benbrook, Corinth,
  Saginaw and Mineral Wells.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until 200 AM CDT for north central
Texas.

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

&&

LAT...LON 3329 9684 3299 9703 3271 9720 3268 9806
      3291 9806 3327 9740
TIME...MOT...LOC 0440Z 264DEG 36KT 3295 9758

HAIL...<.75IN
WIND...70MPH
$$

Dunn

 

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New tornado warning in effect for McKinney and NE Collin County.  Rotation signature and small "hook" roughly over US 75 and the Sam Rayburn Tollway.

EDIT: strong winds and almost-horizontal rain are now hitting my location in west Fort Worth.

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15 minutes ago, BrandonC_TX said:

New tornado warning in effect for McKinney and NE Collin County.  Rotation signature and small "hook" roughly over US 75 and the Sam Rayburn Tollway.

EDIT: strong winds and almost-horizontal rain are now hitting my location in west Fort Worth.

The TDFW short-range radar showed some rotation at State Highway 121 (Sam Rayburn) , and continued to about 1.5 miles south of Fairview. The KFWS radar had this, but it was a little hard to interpret.

map of area: this must be some sort of traffic monstrosity. How many roads are there??

ib8OO4S.jpg

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Looks like mostly EF1- low end EF2 damage from the portion of WFAA's flyover that I saw. Would follow more but I need to sleep 

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The fact this tornado went through some of the most densely populated sections of the nation's 4th largest metropolitan area with not a single fatality is nothing but a miracle. Timely warnings helped significantly but given the major thoroughfares it crossed with traffic hit and still no deaths is incredible.

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The parent cell passed just over my house before spawning that tornado over Dallas. Models did an excellent job hinting at the potential for severe around here several days out. The hodograph was pretty much a 'U' lol. Here are some images from GR2Analyst I was able to put together:

1447312711_DAL10_20_19CCXS.png.fa623242ed9ff59d7e05b7d2d006231a.png1786574219_DAL10_20_19BRXS.png.fda140e28d8cac1af795a63ead94b3a4.png628762285_DAL10_20_19BV3D.thumb.png.de161fee8cf7c580d53cbbcd1577eab8.png317000803_DAL10_20_19BR3D.png.86f719ff8729df6094c1a38681f16894.png

DAL 10_20_19 BR XS.png

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8 hours ago, weatherextreme said:
More

2:48 PM - An NWS survey team has determined that the estimated maximum winds for the tornado in North Dallas is 140 mph, consistent with an EF-3 rating. We will share more information later this afternoon/evening with additional details. #dfwwx #txwx

 

What's interesting is in the PNS... it was given an EF3 rating because of the damage to one house 

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Public Information Statement
National Weather Service Fort Worth TX
619 PM CDT Mon Oct 21 2019


...NWS Damage Survey For 10/20/2019 North Texas Severe Weather Event...

Severe thunderstorms erupted on the evening of 10/20/2019 across North Texas
ahead of a powerful storm system. A couple of supercells produced tornadoes 
across parts of the Dallas/Fort Worth Metroplex. In summary, 
the highest rated tornado...an EF-3...struck portions of Dallas County. The 
other two tornadoes have been rated EF-1 and EF-0. A total of 3 tornadoes 
and one damaging downburst have been surveyed. Additional surveys are possible 
over the next several days.  

.Las Colinas to Richardson Tornado...

Rating:                 EF-3
Estimated Peak Wind:    140 mph
Path Length /statute/:  15.75 miles
Path Width /maximum/:   1300 yards
Fatalities:             0
Injuries:               UNKNOWN

Start Date:             10/20/2019
Start Time:             20:58 CDT
Start Location:         1.8 E of Las Colinas /Dallas County/
Start Lat/Lon:          32.87/-96.91

End Date:               10/20/2019
End Time:               21:30 CDT
End Location:           3 E of Richardson /Dallas County/
End Lat/Lon:            32.96/-96.68

The tornado formed in northwest Dallas, near State Highway 348 and
Luna Road, where large tree damage and minor roof damage was 
initially observed. This tornado tracked toward the east-northeast,
crossing I-35E and impacted numerous commercial structures 
between this freeway and Harry Hines Blvd. Extensive damage to 
many businesses and residences, consistent with EF-1 and EF-2 
intensity wind speeds, occurred near the intersection of Harry 
Hines Blvd and Walnut Hill Lane. As the tornado moved eastward, 
roughly coincident with Walnut Hill Lane, several gas stations, 
large commercial buildings, and churches, and at least one multi-
story apartment complex sustained significant roof and exterior 
wall damage. This path of strong EF-1 and EF-2 damage continued 
east-northeast along Walnut Hill Lane through the Marsh Lane and 
Midway Road corridors. East of Marsh Lane, the tornado
impacted more single-family residences, though commercial 
structures were still adversely affected at times. Severe damage 
to large hardwood trees, consistent with EF-1 intensity winds, was
observed throughout the damage path from Marsh Lane to US HWY 75. 

Intermittent EF-1 and EF-2 damage also occurred to a number of 
residences in this area. Many of these damaged homes were large 
and/or well-established structures that sustained either partial 
or total roof loss, accompanied by minor exterior wall damage. 
This damage was consistent with 110-125 mph tornado winds. Within 
one concentrated region of EF-2 damage along Northaven Road west 
of US HWY 75, a particular single-family home was surveyed with total 
roof loss, and multiple collapsed exterior walls. The survey team 
determined that this damage was consistent with low-end EF-3 
intensity winds of approximately 140 mph. This was the only 
structure that was assigned an EF-3 rating for this tornado. 

The tornado continued eastward, toward US HWY 75 and produced 
significant roof damage to several businesses near US HWY 75 
including office low-rise buildings, a car dealership, and a Home
Depot. Damage here was assigned an EF-2 intensity. The tornado 
crossed over the southern part of the Texas Instruments campus 
and then began to turn more northeastward and parallel
Greenville Avenue. Tree and roof damage consistent with EF-1 
occurred as it crossed I-635. Several glass windows were blown
out at a mid-rise office building. The tornado crossed 
an apartment complex near Walnut Street and Greenville Avenue where 
dozens of units had sections of missing roof consistent with EF-1 
damage of 95 to 110 mph. The tornado moved across the Cutters 
Point apartment complex where numerous units experienced 
significant roof loss consistent with 115 mph or EF-2 damage.
Another low-rise office building saw numerous windows blown out on
all sides. The tornado continued into the Richland Park, Lakes of
Buckingham, Richland Meadows, and College Park residential 
subdivisions where widespread tree and roof damage consistent 
with 80 to 95 mph winds occurred. A few homes in this area saw 
complete or total roof loss where winds were estimated at 110 mph 
or EF-1. The tornado began to weaken and took a sharp turn to the 
north near Richardson Square where it tracked to the Huffhines 
Park areas. Mostly tree damage occurred here with winds estimated 
near 70 mph or EF-0. The track then turned to the west and became 
very narrow near Duck Creek with the tornado dissipating as it 
crossed Jupiter Rd. The tornado had a continuous track for 32 
minutes, tracked for just over 15 miles, produced maximum winds of
140 mph, with a maximum width of three-quarters of a mile. 
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