Alert archive / Texas / Tornado Warnings in 2021

Tornado Warning 12, NWS Fort Worth, TX

May 3, 2021Collin County, Texas

NWS Fort Worth, TX issued this tornado warning at May 3, 2021, 7:17 PM CDT for Collin County, Texas. It was in force for 43 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: May 3, 2021, 7:17 PM CDT (00:17 UTC)
Expired: May 3, 2021, 8:00 PM CDT
In force: 43 min
Issued by: NWS Fort Worth, TX
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 1.25 in

County Collin County, TX

The radar

The Dallas/Ft Worth radar (KFWS), 105 km from the middle of the area, began a volume at 00:18 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

What was reported inside it

Time	Report	Where	Remark
May 3, 7:42 PM CDT	TORNADO	1 Sw Weston, TX	A BRIEF EF-0 TORNADO TOUCHED DOWN SOUTH OF WESTON. THE TORNADO WAS RATED EF-0 IN CONJUNCTION WITH STORM CHASER VIDEO AND THE DAMAGE REPORT OF POWER LINES DOWN COLLOCATED WITH A TIGHT ROTATION COUPLET ON RADAR.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
May 3, 3:48 PM CDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Fort Worth, TX (KFWD), launched 00:00Z, 0.3 hours before the alert went out and 83 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 3299 J/kg
Mixed-layer CIN: -10 J/kg
Mixed-layer LCL: 1213 m above ground
0-6 km bulk shear: 58 kt
0-1 km storm-relative helicity: 150 m²/s²
0-3 km storm-relative helicity: 143 m²/s²
Significant tornado parameter: 2.6
Supercell composite: 13.9

Open this sounding in Storm Lab

The text

As transmitted.

114 
WFUS54 KFWD 040017 RRA
TORFWD
TXC085-040100-
/O.NEW.KFWD.TO.W.0012.210504T0017Z-210504T0100Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Fort Worth TX
717 PM CDT Mon May 3 2021

The National Weather Service in Fort Worth has issued a

* Tornado Warning for...
  Northwestern Collin County in north central Texas...

* Until 800 PM CDT.
    
* At 717 PM CDT, a severe thunderstorm capable of producing a tornado
  was located near Celina, moving east at 20 mph.

  HAZARD...Tornado and half dollar size hail.

  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.

* This dangerous storm will be near...
  McKinney around 725 PM CDT.
  Anna and Van Alstyne around 800 PM CDT.

Other locations impacted by this tornadic thunderstorm include
Weston, Melissa and Westminster.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to an interior room on the lowest floor of a
sturdy building. Avoid windows. If you are outdoors, in a mobile
home, or in a vehicle, move to the closest substantial shelter and
protect yourself from flying debris.

&&

LAT...LON 3340 9653 3332 9642 3322 9684 3333 9684
      3340 9673
TIME...MOT...LOC 0017Z 247DEG 17KT 3328 9681 

TORNADO...RADAR INDICATED
HAIL...1.25IN

$$

Bonnette

1 follow-up statement

652 
WWUS54 KFWD 040039
SVSFWD

Severe Weather Statement
National Weather Service Fort Worth TX
739 PM CDT Mon May 3 2021

TXC085-040100-
/O.CON.KFWD.TO.W.0012.000000T0000Z-210504T0100Z/
Collin TX-
739 PM CDT Mon May 3 2021

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 800 PM CDT FOR
NORTHWESTERN COLLIN COUNTY...
    
At 738 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Anna and Weston, moving northeast at 25 mph.

HAZARD...Tornado and half dollar size hail.

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.

This dangerous storm will be near...
  Anna and Van Alstyne around 755 PM CDT.

Other locations impacted by this tornadic thunderstorm include
Weston, Melissa and Westminster.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! If you are outdoors, in a mobile home, or in a
vehicle, move to the closest substantial shelter now!  Get to an
interior room on the lowest floor of a sturdy building and avoid
windows.

&&

LAT...LON 3340 9653 3332 9642 3325 9674 3332 9678
      3340 9673
TIME...MOT...LOC 0038Z 247DEG 20KT 3333 9666 

TORNADO...RADAR INDICATED
HAIL...1.25IN

$$

Bonnette

The office that day

Everything else NWS Fort Worth, TX issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 3, 7:03 PM CDT	Flash Flood Warning	FWD	Hood, Johnson, Parker	117 min
May 3, 7:07 PM CDT	Severe Thunderstorm Warning	FWD	Collin, Dallas, Denton	53 min
May 3, 7:17 PM CDT	Tornado Warning	FWD	Hill, Johnson	43 min
May 3, 7:28 PM CDT	Severe Thunderstorm Warning	FWD	Hill, Johnson	62 min
May 3, 7:29 PM CDT	Severe Thunderstorm Warning	FWD	Collin, Cooke, Denton, Fannin, Grayson	61 min
May 3, 7:48 PM CDT	Severe Thunderstorm Warning	FWD	Collin, Fannin, Grayson, Hunt	42 min
May 3, 7:56 PM CDT	Severe Thunderstorm Warning	FWD	Ellis	64 min
May 3, 8:00 PM CDT	Tornado Warning	FWD	Ellis, Johnson	30 min
May 3, 8:04 PM CDT	Severe Thunderstorm Warning	FWD	Johnson, Somervell, Tarrant	26 min
May 3, 8:07 PM CDT	Tornado Warning	FWD	Ellis, Hill, Johnson	38 min
May 3, 8:29 PM CDT	Severe Thunderstorm Warning	FWD	Johnson	61 min
May 3, 8:45 PM CDT	Tornado Warning	FWD	Ellis	45 min
May 3, 8:55 PM CDT	Severe Thunderstorm Warning	FWD	Ellis, Hill	65 min
May 3, 9:01 PM CDT	Severe Thunderstorm Warning	FWD	Dallas, Ellis, Kaufman	59 min
May 3, 9:11 PM CDT	Severe Thunderstorm Warning	FWD	Cooke, Denton, Grayson	35 min
May 3, 9:13 PM CDT	Tornado Warning	FWD	Ellis, Kaufman	22 min
May 3, 9:29 PM CDT	Severe Thunderstorm Warning	FWD	Hill, Navarro	31 min
May 3, 9:36 PM CDT	Severe Thunderstorm Warning	FWD	Grayson	24 min
May 3, 9:49 PM CDT	Severe Thunderstorm Warning	FWD	Ellis, Henderson, Hill, Kaufman, Navarro, Van Zandt	71 min
May 3, 9:53 PM CDT	Severe Thunderstorm Warning	FWD	Bell, Coryell, Lampasas	67 min
May 3, 9:59 PM CDT	Severe Thunderstorm Warning	FWD	Ellis	48 min
May 3, 10:03 PM CDT	Severe Thunderstorm Warning	FWD	Stephens, Young	41 min
May 3, 10:25 PM CDT	Severe Thunderstorm Warning	FWD	Bosque, Coryell, Hamilton	37 min
May 3, 10:33 PM CDT	Severe Thunderstorm Warning	FWD	Van Zandt	42 min
May 3, 10:36 PM CDT	Severe Thunderstorm Warning	FWD	Delta, Hopkins, Hunt, Lamar, Rains	54 min
May 3, 10:48 PM CDT	Severe Thunderstorm Warning	FWD	Bell, Falls, McLennan	43 min
May 3, 10:59 PM CDT	Severe Thunderstorm Warning	FWD	Henderson, Kaufman, Van Zandt	44 min
May 4, 12:18 AM CDT	Severe Thunderstorm Warning	FWD	Henderson, Kaufman, Navarro, Van Zandt	57 min
May 4, 1:23 AM CDT	Special Weather Statement	FWD	Van Zandt	37 min
May 4, 8:08 AM CDT	River Flood Warning	FWD	Ellis, Navarro	52 hr
May 4, 8:31 AM CDT	Severe Thunderstorm Warning	FWD	Robertson	59 min

Nearby

Tornado Warnings in Texas, 2021 Every tornado warning in 2021 Tornadoes in 2021

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.