Alert archive / Texas / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 284, NWS Amarillo, TX

October 13, 20215 counties in Texas

NWS Amarillo, TX issued this severe thunderstorm warning at Oct 13, 2021, 12:50 AM CDT for 5 counties in Texas. It was in force for 55 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Oct 13, 2021, 12:50 AM CDT (05:50 UTC)
Expired: Oct 13, 2021, 1:45 AM CDT
In force: 55 min
Issued by: NWS Amarillo, TX
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Collingsworth County, TX, Donley County, TX, Gray County, TX, Hemphill County, TX, Wheeler County, TX

The radar

The Amarillo radar (KAMA), 111 km from the middle of the area, began a volume at 05:53 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.

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 12, 11:05 PM CDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Amarillo Airport, TX (KAMA), launched 00:00Z, 5.8 hours before the alert went out and 111 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: 165 J/kg
Mixed-layer CIN: -69 J/kg
Mixed-layer LCL: 2910 m above ground
0-6 km bulk shear: 49 kt
0-1 km storm-relative helicity: 141 m²/s²
0-3 km storm-relative helicity: 172 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.7

Open this sounding in Storm Lab

The text

As transmitted.

942 
WUUS54 KAMA 130550
SVRAMA
TXC087-129-179-211-483-130645-
/O.NEW.KAMA.SV.W.0284.211013T0550Z-211013T0645Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Amarillo TX
1250 AM CDT Wed Oct 13 2021

The National Weather Service in Amarillo has issued a

* Severe Thunderstorm Warning for...
  Wheeler County in the Panhandle of Texas...
  Southeastern Gray County in the Panhandle of Texas...
  Northwestern Collingsworth County in the Panhandle of Texas...
  Southeastern Hemphill County in the Panhandle of Texas...
  Northeastern Donley County in the Panhandle of Texas...

* Until 145 AM CDT.

* At 1249 AM CDT, a severe thunderstorm was located 5 miles south of
  Mclean, or 21 miles northeast of Clarendon, moving northeast at 80
  mph.

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

  SOURCE...Radar indicated.

  IMPACT...Minor damage to roofs, siding, and trees is possible. 
           Hail damage to vehicles is expected.

* Locations impacted include...
  Shamrock, Briscoe, Wheeler, Mclean, New Mobeetie, Lake Mcclellan,
  Twitty, Allison, Lela, Kellerville, Dozier, Alanreed and Mobeetie.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until 600 AM CDT for the Panhandle
of Texas.

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

&&

LAT...LON 3494 10072 3524 10097 3586 10000 3520 10000
TIME...MOT...LOC 0549Z 240DEG 70KT 3515 10062 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

Rutt

4 follow-up statements

283 
WWUS54 KAMA 130554
SVSAMA

Severe Weather Statement
National Weather Service Amarillo TX
1254 AM CDT Wed Oct 13 2021

TXC087-129-179-211-483-130645-
/O.CON.KAMA.SV.W.0284.000000T0000Z-211013T0645Z/
Wheeler TX-Gray TX-Collingsworth TX-Hemphill TX-Donley TX-
1254 AM CDT Wed Oct 13 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 145 AM CDT
FOR WHEELER...SOUTHEASTERN GRAY...NORTHWESTERN COLLINGSWORTH...
SOUTHEASTERN HEMPHILL AND NORTHEASTERN DONLEY COUNTIES...

At 1254 AM CDT, a severe thunderstorm was located 4 miles southeast
of Mclean, or 16 miles west of Shamrock, moving northeast at 65 mph.

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

SOURCE...Radar indicated.

IMPACT...Expect some tree damage. Damage is likely to mobile homes, 
         roofs, and outbuildings. Hail damage to vehicles is 
         expected.

Locations impacted include...
Shamrock, Briscoe, Wheeler, Mclean, New Mobeetie, Twitty, Allison,
Dozier, Lela, Alanreed, Kellerville and Mobeetie.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until 600 AM CDT for the Panhandle
of Texas.

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

&&

LAT...LON 3499 10060 3527 10093 3586 10000 3520 10000
TIME...MOT...LOC 0554Z 240DEG 55KT 3518 10054 

THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...70 MPH

$$

Rutt

682 
WWUS54 KAMA 130607
SVSAMA

Severe Weather Statement
National Weather Service Amarillo TX
107 AM CDT Wed Oct 13 2021

TXC129-130616-
/O.CAN.KAMA.SV.W.0284.000000T0000Z-211013T0645Z/
Donley TX-
107 AM CDT Wed Oct 13 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN DONLEY COUNTY IS
CANCELLED...
    
The severe thunderstorm which prompted the warning has moved out of 
the warned area. **! Therefore, the warning has been cancelled.

A Tornado Watch remains in effect until 600 AM CDT for the Panhandle
of Texas.

LAT...LON 3509 10033 3540 10073 3586 10000 3520 10000
TIME...MOT...LOC 0606Z 235DEG 53KT 3530 10036 

$$

TXC087-179-211-483-130645-
/O.CON.KAMA.SV.W.0284.000000T0000Z-211013T0645Z/
Wheeler TX-Gray TX-Collingsworth TX-Hemphill TX-
107 AM CDT Wed Oct 13 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 145 AM CDT
FOR WHEELER...EAST CENTRAL GRAY...NORTH CENTRAL COLLINGSWORTH AND
SOUTHEASTERN HEMPHILL COUNTIES...

At 106 AM CDT, a severe thunderstorm was located 4 miles north of
Lela, or 8 miles northwest of Shamrock, moving northeast at 60 mph.

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

SOURCE...Radar indicated.

IMPACT...Expect some tree damage. Damage is likely to mobile homes, 
         roofs, and outbuildings. Hail damage to vehicles is 
         expected.

Locations impacted include...
Shamrock, Briscoe, Wheeler, New Mobeetie, Twitty, Allison, Lela,
Kellerville and Mobeetie.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until 600 AM CDT for the Panhandle
of Texas.

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

&&

LAT...LON 3509 10033 3540 10073 3586 10000 3520 10000
TIME...MOT...LOC 0606Z 235DEG 53KT 3530 10036 

THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...70 MPH

$$

Rutt

273 
WWUS54 KAMA 130623
SVSAMA

Severe Weather Statement
National Weather Service Amarillo TX
123 AM CDT Wed Oct 13 2021

TXC087-179-130633-
/O.CAN.KAMA.SV.W.0284.000000T0000Z-211013T0645Z/
Gray TX-Collingsworth TX-
123 AM CDT Wed Oct 13 2021

...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL GRAY AND NORTH
CENTRAL COLLINGSWORTH COUNTIES IS CANCELLED...
    
The severe thunderstorm which prompted the warning has moved out of 
the warned area. Therefore, the warning has been cancelled.

A Tornado Watch remains in effect until 600 AM CDT for the Panhandle
of Texas.

LAT...LON 3518 10004 3518 10016 3557 10047 3586 10000
      3520 10000
TIME...MOT...LOC 0623Z 241DEG 58KT 3542 10006 

$$

TXC211-483-130645-
/O.CON.KAMA.SV.W.0284.000000T0000Z-211013T0645Z/
Wheeler TX-Hemphill TX-
123 AM CDT Wed Oct 13 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 145 AM CDT
FOR WHEELER AND SOUTHEASTERN HEMPHILL COUNTIES...

At 123 AM CDT, a severe thunderstorm was located 8 miles west of
Sweetwater, or 17 miles northeast of Shamrock, moving northeast at 65
mph.

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

SOURCE...Radar indicated.

IMPACT...Expect some tree damage. Damage is likely to mobile homes, 
         roofs, and outbuildings. Hail damage to vehicles is 
         expected.

Locations impacted include...
Briscoe, Wheeler, Allison, Twitty and New Mobeetie. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until 600 AM CDT for the Panhandle
of Texas.

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

&&

LAT...LON 3518 10004 3518 10016 3557 10047 3586 10000
      3520 10000
TIME...MOT...LOC 0623Z 241DEG 58KT 3542 10006 

THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...70 MPH

$$

Rutt

020 
WWUS54 KAMA 130637
SVSAMA

Severe Weather Statement
National Weather Service Amarillo TX
137 AM CDT Wed Oct 13 2021

TXC211-483-130647-
/O.EXP.KAMA.SV.W.0284.000000T0000Z-211013T0645Z/
Wheeler TX-Hemphill TX-
137 AM CDT Wed Oct 13 2021

...THE SEVERE THUNDERSTORM WARNING FOR WHEELER AND SOUTHEASTERN
HEMPHILL COUNTIES WILL EXPIRE AT 145 AM CDT...
                
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning will be allowed to expire.  However gusty
winds are still possible with this thunderstorm.

A Tornado Watch remains in effect until 600 AM CDT for the Panhandle
of Texas.

LAT...LON 3518 10004 3518 10016 3557 10047 3586 10000
      3520 10000
TIME...MOT...LOC 0637Z 240DEG 70KT 3554 9981 

$$

Rutt

The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 12, 7:06 PM CDT	Special Weather Statement	AMA	Dallam, Hartley, Sherman	24 min
Oct 12, 7:08 PM CDT	Special Weather Statement	AMA	Hartley	37 min
Oct 12, 7:19 PM CDT	Special Weather Statement	AMA	Deaf Smith, Oldham	41 min
Oct 12, 7:33 PM CDT	Special Weather Statement	AMA	Dallam	42 min
Oct 12, 8:52 PM CDT	Severe Thunderstorm Warning Considerable damage threat	AMA	Hansford	53 min
Oct 12, 9:34 PM CDT	Severe Thunderstorm Warning Considerable damage threat	AMA	Hansford, Ochiltree	56 min
Oct 12, 10:02 PM CDT	Special Weather Statement	AMA	Carson	28 min
Oct 12, 10:23 PM CDT	Severe Thunderstorm Warning	AMA	Hansford, Hemphill, Hutchinson, Lipscomb, Ochiltree, Roberts	82 min
Oct 12, 10:30 PM CDT	Special Weather Statement	AMA	Carson, Hutchinson, Roberts	30 min
Oct 12, 10:52 PM CDT	Special Weather Statement	AMA	Carson	23 min
Oct 12, 11:00 PM CDT	Severe Thunderstorm Warning	AMA	Lipscomb, Ochiltree	60 min
Oct 12, 11:01 PM CDT	Special Weather Statement	AMA	Carson	29 min
Oct 12, 11:42 PM CDT	Special Weather Statement	AMA	Gray	33 min
Oct 12, 11:59 PM CDT	Severe Thunderstorm Warning Considerable damage threat	AMA	Hemphill, Lipscomb, Ochiltree, Roberts	61 min
Oct 13, 12:01 AM CDT	Severe Thunderstorm Warning	AMA	Gray, Hemphill, Roberts, Wheeler	59 min
Oct 13, 12:57 AM CDT	Tornado Warning	AMA	Collingsworth, Donley, Gray, Wheeler	33 min
Oct 13, 2:06 AM CDT	Special Weather Statement	AMA	Collingsworth	24 min

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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.