Alert archive / Texas / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 259, NWS Fort Worth, TX

October 27, 2021Denton County, Texas

NWS Fort Worth, TX issued this severe thunderstorm warning at Oct 27, 2021, 2:53 AM CDT for Denton County, Texas. It was in force for 37 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: Oct 27, 2021, 2:53 AM CDT (07:53 UTC)
Expired: Oct 27, 2021, 3:30 AM CDT
In force: 37 min
Issued by: NWS Fort Worth, TX
Area: Storm-based polygon
Tornado: Possible
Damage threat: Considerable
Hail: 0.75 in
Wind: 70.0 mph

County Denton County, TX

The radar

The Dallas/Ft Worth radar (KFWS), 85 km from the middle of the area, began a volume at 07:56 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
Oct 27, 2:53 AM CDT	TSTM WND GST 60	4 Wsw Denton, TX	DELAYED REPORT FROM YESTERDAY.

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
Oct 27, 1:32 AM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Fort Worth, TX (KFWD), launched 00:00Z, 7.9 hours before the alert went out and 59 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: 1353 J/kg
Mixed-layer CIN: -69 J/kg
Mixed-layer LCL: 1163 m above ground
0-6 km bulk shear: 24 kt
0-1 km storm-relative helicity: 147 m²/s²
0-3 km storm-relative helicity: 323 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 4.2

Open this sounding in Storm Lab

The text

As transmitted.

309 
WUUS54 KFWD 270753
SVRFWD
TXC121-270830-
/O.NEW.KFWD.SV.W.0259.211027T0753Z-211027T0830Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Fort Worth TX
253 AM CDT Wed Oct 27 2021

The National Weather Service in Fort Worth has issued a

* Severe Thunderstorm Warning for...
  Northeastern Denton County in north central Texas...

* Until 330 AM CDT.

* At 252 AM CDT, a severe thunderstorm was located over Denton,
  moving east at 40 mph.

  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...
  Frisco, Denton, The Colony, Corinth, Highland Village, Lake Dallas,
  Sanger, Lake Lewisville, Little Elm, Krum, Pilot Point, Argyle,
  Hickory Creek, Shady Shores, Aubrey, Krugerville, Cross Roads,
  Copper Canyon, Hackberry and Ray Roberts Park Isle Du Bois.

This includes the following highways...
 Interstate 35 between mile markers 468 and 476.
 Interstate 35W between mile markers 78 and 85.
 Interstate 35E between mile markers 456 and 466.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3341 9685 3324 9684 3311 9684 3311 9722
      3332 9726 3342 9695
TIME...MOT...LOC 0752Z 267DEG 33KT 3321 9712 

TORNADO...POSSIBLE
THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...70 MPH

$$

Barnes

2 follow-up statements

119 
WWUS54 KFWD 270804
SVSFWD

Severe Weather Statement
National Weather Service Fort Worth TX
304 AM CDT Wed Oct 27 2021

TXC121-270830-
/O.CON.KFWD.SV.W.0259.000000T0000Z-211027T0830Z/
Denton TX-
304 AM CDT Wed Oct 27 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 330 AM CDT
FOR NORTHEASTERN DENTON COUNTY...

At 303 AM CDT, a severe thunderstorm was located over Cross Roads, or
near Corinth, moving east at 40 mph.

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...
Corinth, Lake Dallas, Lake Lewisville, Little Elm, Hickory Creek, 
Shady Shores, Aubrey, Krugerville, Cross Roads, Hackberry, Oak 
Point, Lakewood Village and Lincoln Park.

LAT...LON 3311 9706 3332 9709 3341 9688 3341 9685
      3324 9684 3311 9684
TIME...MOT...LOC 0803Z 267DEG 33KT 3322 9699 

TORNADO...POSSIBLE
THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...70 MPH

$$

Bonnette

399 
WWUS54 KFWD 270831
SVSFWD

Severe Weather Statement
National Weather Service Fort Worth TX
331 AM CDT Wed Oct 27 2021

TXC121-270840-
/O.EXP.KFWD.SV.W.0259.000000T0000Z-211027T0830Z/
Denton TX-
331 AM CDT Wed Oct 27 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN DENTON COUNTY HAS
EXPIRED...
        
The storm which prompted the warning has moved out of the area.
Therefore the warning has been allowed to expire.

A Severe Thunderstorm Watch remains in effect until 800 AM CDT for
north central Texas.

LAT...LON 3311 9706 3332 9709 3341 9688 3341 9685
      3324 9684 3311 9684
TIME...MOT...LOC 0830Z 267DEG 33KT 3323 9672 

$$

Barnes

The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 26, 7:16 PM CDT	Wind Advisory	FWD	Bell, Bosque, Collin, Comanche, Cooke, Coryell and 23 more	27 hr
Oct 27, 12:35 AM CDT	Special Weather Statement	FWD	Eastland, Stephens	25 min
Oct 27, 1:00 AM CDT	Special Weather Statement	FWD	Eastland, Palo Pinto, Stephens	30 min
Oct 27, 1:07 AM CDT	Severe Thunderstorm Warning	FWD	Jack, Palo Pinto, Stephens, Young	53 min
Oct 27, 1:44 AM CDT	Severe Thunderstorm Warning	FWD	Jack, Palo Pinto, Parker, Wise	61 min
Oct 27, 2:21 AM CDT	Special Weather Statement	FWD	Hood, Somervell	24 min
Oct 27, 2:30 AM CDT	Severe Thunderstorm Warning	FWD	Denton, Parker, Tarrant, Wise	60 min
Oct 27, 3:18 AM CDT	Severe Thunderstorm Warning	FWD	Collin, Cooke, Denton, Grayson	57 min
Oct 27, 2:08 PM CDT	Wind Advisory	FWD	Anderson, Bell, Bosque, Collin, Comanche, Cooke and 40 more	34 hr

Nearby

Severe Thunderstorm Warnings in Texas, 2021 Every severe thunderstorm warning 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.