Alert archive / Texas / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 252, NWS Lubbock, TX

July 17, 2021Castro County, Parmer County, Swisher County, Texas

NWS Lubbock, TX issued this severe thunderstorm warning at Jul 17, 2021, 8:18 PM CDT for Castro County, Parmer County, Swisher County, Texas. It was in force for 57 min. 2 reports 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: Jul 17, 2021, 8:18 PM CDT (01:18 UTC)
Expired: Jul 17, 2021, 9:15 PM CDT
In force: 57 min
Issued by: NWS Lubbock, TX
Area: Storm-based polygon
Hail: 0.88 in
Wind: 70.0 mph

Counties Castro County, TX, Parmer County, TX, Swisher County, TX

The radar

The Amarillo radar (KAMA), 88 km from the middle of the area, began a volume at 01:17 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
Jul 17, 8:24 PM CDT	TSTM WND GST 61	2 Ne Friona, TX
Jul 17, 8:41 PM CDT	TSTM WND DMG	Bovina, TX	LARGE TREE WAS BLOWN DOWN.

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

The nearest sounding before it

Midland Regional, TX (KMAF), launched 00:00Z, 1.3 hours before the alert went out and 292 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: 1227 J/kg
Mixed-layer CIN: -28 J/kg
Mixed-layer LCL: 1935 m above ground
0-6 km bulk shear: 19 kt
0-1 km storm-relative helicity: 7 m²/s²
0-3 km storm-relative helicity: 76 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

546 
WUUS54 KLUB 180118
SVRLUB
TXC069-369-437-180215-
/O.NEW.KLUB.SV.W.0252.210718T0118Z-210718T0215Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Lubbock TX
818 PM CDT Sat Jul 17 2021

The National Weather Service in Lubbock Texas has issued a

* Severe Thunderstorm Warning for...
  Parmer County in the Panhandle of Texas...
  Castro County in the Panhandle of Texas...
  Swisher County in the Panhandle of Texas...

* Until 915 PM CDT.

* At 817 PM CDT, severe thunderstorms were located along a line
  extending from near Bellview to 6 miles northwest of Happy, moving
  southeast at 25 mph.

  HAZARD...70 mph wind gusts and nickel size hail.

  SOURCE...66 mph wind measured at the Hereford West Texas Mesonet 

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

* Locations impacted include...
  Tulia, Dimmitt, Friona, Hart, Bovina, Farwell, Kress, Happy,
  Summerfield, Easter, Lazbuddie, Oklahoma Lane, Lariat,
  Claytonville, Black, Rhea and Nazareth.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3475 10183 3431 10151 3431 10304 3475 10304
TIME...MOT...LOC 0117Z 333DEG 24KT 3482 10306 3478 10196 

HAIL...0.88IN
WIND...70MPH
 
$$

WCI/GKendrick

3 follow-up statements

863 
WWUS54 KLUB 180136
SVSLUB

Severe Weather Statement
National Weather Service Lubbock TX
836 PM CDT Sat Jul 17 2021

TXC437-180144-
/O.CAN.KLUB.SV.W.0252.000000T0000Z-210718T0215Z/
Swisher TX-
836 PM CDT Sat Jul 17 2021

...THE SEVERE THUNDERSTORM WARNING FOR SWISHER COUNTY IS CANCELLED...

The storms which prompted the warning have moved out of the warned 
area. Therefore, the warning has been cancelled.

LAT...LON 3475 10200 3431 10200 3431 10304 3475 10304
TIME...MOT...LOC 0134Z 333DEG 24KT 3472 10300 3468 10190 

$$

TXC069-369-180215-
/O.CON.KLUB.SV.W.0252.000000T0000Z-210718T0215Z/
Parmer TX-Castro TX-
836 PM CDT Sat Jul 17 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 915 PM CDT
FOR PARMER AND CASTRO COUNTIES...

At 834 PM CDT, severe thunderstorms were located along a line
extending from 4 miles northwest of Rhea to 4 miles southwest of
Happy, moving southeast at 30 mph.

HAZARD...70 mph wind gusts and nickel size hail.

SOURCE...66 mph wind gust measured at the Hereford West Texas 
         Mesonet.

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

Locations impacted include...
Dimmitt, Friona, Hart, Bovina, Farwell, Summerfield, Easter,
Lazbuddie, Oklahoma Lane, Lariat, Black, Rhea and Nazareth.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

Wind damage with these storms will occur before any rain or
lightning. Do not wait for the sound of thunder before taking cover.
SEEK SHELTER IMMEDIATELY inside a sturdy structure and stay away from
windows.

Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 3475 10200 3431 10200 3431 10304 3475 10304
TIME...MOT...LOC 0134Z 333DEG 24KT 3472 10300 3468 10190 

HAIL...0.88IN
WIND...70MPH
 
$$

WCI/GKendrick

890 
WWUS54 KLUB 180149
SVSLUB

Severe Weather Statement
National Weather Service Lubbock TX
849 PM CDT Sat Jul 17 2021

TXC069-369-180215-
/O.CON.KLUB.SV.W.0252.000000T0000Z-210718T0215Z/
Parmer TX-Castro TX-
849 PM CDT Sat Jul 17 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 915 PM CDT
FOR PARMER AND CASTRO COUNTIES...

At 848 PM CDT, severe thunderstorms were located along a line
extending from 10 miles west of Rhea to Easter to 5 miles south of
Dawn, moving south at 20 mph.

HAZARD...70 mph wind gusts and nickel size hail.

SOURCE...61 mph wind gust measured at the Hereford West Texas 
         Mesonet.

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

Locations impacted include...
Dimmitt, Friona, Hart, Bovina, Farwell, Summerfield, Easter,
Lazbuddie, Oklahoma Lane, Lariat, Black, Rhea and Nazareth.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

Wind damage with these storms will occur before any rain or
lightning. Do not wait for the sound of thunder before taking cover.
SEEK SHELTER IMMEDIATELY inside a sturdy structure and stay away from
windows.

Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 3475 10200 3431 10200 3431 10304 3475 10304
TIME...MOT...LOC 0148Z 347DEG 19KT 3467 10313 3466 10242 3483 10222 

HAIL...0.88IN
WIND...70MPH
 
$$

WCI/GKendrick

827 
WWUS54 KLUB 180202
SVSLUB

Severe Weather Statement
National Weather Service Lubbock TX
902 PM CDT Sat Jul 17 2021

TXC069-369-180215-
/O.CON.KLUB.SV.W.0252.000000T0000Z-210718T0215Z/
Parmer TX-Castro TX-
902 PM CDT Sat Jul 17 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 915 PM CDT
FOR PARMER AND CASTRO COUNTIES...

At 901 PM CDT, severe thunderstorms were located along a line
extending from 10 miles southwest of Rhea to 4 miles south of Easter
to 8 miles southeast of Hereford, moving south at 30 mph.

HAZARD...70 mph wind gusts and nickel size hail.

SOURCE...64 mph wind gust measured at the Hereford West Texas 
         Mesonet.

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

Locations impacted include...
Dimmitt, Friona, Bovina, Farwell, Summerfield, Easter, Lazbuddie,
Oklahoma Lane, Lariat, Rhea and Black.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

Wind damage with these storms will occur before any rain or
lightning. Do not wait for the sound of thunder before taking cover.
SEEK SHELTER IMMEDIATELY inside a sturdy structure and stay away from
windows.

Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 3475 10218 3431 10217 3431 10304 3475 10304
TIME...MOT...LOC 0201Z 347DEG 25KT 3460 10311 3459 10240 3477 10226 

HAIL...0.88IN
WIND...70MPH
 
$$

WCI/GKendrick

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 17, 9:13 PM CDT	Severe Thunderstorm Warning	LUB	Bailey, Castro, Lamb, Parmer	62 min
Jul 17, 9:47 PM CDT	Special Weather Statement	LUB	King	28 min
Jul 17, 10:01 PM CDT	Special Weather Statement	LUB	Bailey, Lamb	44 min
Jul 17, 11:47 PM CDT	Special Weather Statement	LUB	Hale	28 min
Jul 18, 12:10 AM CDT	Areal Flood Advisory	LUB	Hale	77 min
Jul 18, 1:05 AM CDT	Areal Flood Advisory	LUB	Hale, Hockley, Lamb, Lubbock	2 hr
Jul 18, 5:28 PM CDT	Special Weather Statement	LUB	Lubbock	17 min
Jul 18, 5:28 PM CDT	Special Weather Statement	LUB	Lubbock	17 min
Jul 18, 6:41 PM CDT	Areal Flood Advisory	LUB	Motley	2 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.