Alert archive / Texas / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 149, NWS Amarillo, TX

June 12, 20218 counties in Texas

NWS Amarillo, TX issued this severe thunderstorm warning at Jun 12, 2021, 11:46 PM CDT for 8 counties in Texas. It was in force for 59 min. 6 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: Jun 12, 2021, 11:46 PM CDT (04:46 UTC)
Expired: Jun 13, 2021, 12:45 AM CDT
In force: 59 min
Issued by: NWS Amarillo, TX
Area: Storm-based polygon
Hail: 1.0 in
Wind: 70.0 mph

Counties Dallam County, TX, Hansford County, TX, Hartley County, TX, Hutchinson County, TX, Moore County, TX, Oldham County, TX, Potter County, TX, Sherman County, TX

The radar

The Amarillo radar (KAMA), 87 km from the middle of the area, began a volume at 04:48 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
Jun 12, 11:48 PM CDT	TSTM WND GST 62	4 Ssw Dalhart, TX	ASOS STATION KDHT DALHART (ASOS).
Jun 12, 11:57 PM CDT	TSTM WND GST 61	4 Ssw Dalhart, TX	ASOS STATION KDHT DALHART (ASOS).
Jun 13, 12:23 AM CDT	TSTM WND GST 75	1 Sw Cactus, TX	MEASURED THUNDERSTORM WIND GUST WITH A HANDHELD WIND METER.
Jun 13, 12:23 AM CDT	TSTM WND GST 75	1 Wsw Cactus, TX	MEASURED THUNDERSTORM WIND GUST WITH A HANDHELD WIND METER.
Jun 13, 12:28 AM CDT	TSTM WND DMG	Cactus, TX	3 INCH TREE LIMBS BLOWN DOWN AND POWER POLES BLOWN OVER IN CACTUS.
Jun 13, 12:35 AM CDT	TSTM WND GST 61	3 Wsw Dumas, TX	AWOS STATION KDUX DUMAS (AWOS).

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
Jun 12, 9:39 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Amarillo Airport, TX (KAMA), launched 00:00Z, 4.8 hours before the alert went out and 88 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: 3697 J/kg
Mixed-layer CIN: -21 J/kg
Mixed-layer LCL: 1361 m above ground
0-6 km bulk shear: 34 kt
0-1 km storm-relative helicity: 42 m²/s²
0-3 km storm-relative helicity: 190 m²/s²
Significant tornado parameter: 1.9
Supercell composite: 18.7

Open this sounding in Storm Lab

The text

As transmitted.

859 
WUUS54 KAMA 130446
SVRAMA
TXC111-195-205-233-341-359-375-421-130545-
/O.NEW.KAMA.SV.W.0149.210613T0446Z-210613T0545Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Amarillo TX
1146 PM CDT Sat Jun 12 2021

The National Weather Service in Amarillo has issued a

* Severe Thunderstorm Warning for...
  Eastern Oldham County in the Panhandle of Texas...
  Northern Hutchinson County in the Panhandle of Texas...
  Northwestern Potter County in the Panhandle of Texas...
  Western Hansford County in the Panhandle of Texas...
  Sherman County in the Panhandle of Texas...
  Southeastern Dallam County in the Panhandle of Texas...
  Moore County in the Panhandle of Texas...
  Hartley County in the Panhandle of Texas...

* Until 1245 AM CDT.

* At 1145 PM CDT, severe thunderstorms were located along a line
  extending from 8 miles southwest of Texhoma to 13 miles west of
  Channing, moving southeast at 50 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...
  Dumas, Dalhart, Stratford, Hartley, Cactus, Sunray, Stinnett,
  Gruver, Channing, Boys Ranch, Pringle, Morse, Four Way, Conlen and
  Masterson.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3605 10295 3650 10161 3598 10108 3596 10109
      3528 10259
TIME...MOT...LOC 0445Z 306DEG 43KT 3642 10190 3572 10258 

HAIL...1.00IN
WIND...70MPH
 
$$

TLH

2 follow-up statements

999 
WWUS54 KAMA 130509
SVSAMA

Severe Weather Statement
National Weather Service Amarillo TX
1209 AM CDT Sun Jun 13 2021

TXC111-195-205-233-341-359-375-421-130545-
/O.CON.KAMA.SV.W.0149.000000T0000Z-210613T0545Z/
Oldham TX-Hutchinson TX-Potter TX-Hansford TX-Sherman TX-Dallam TX-
Moore TX-Hartley TX-
1209 AM CDT Sun Jun 13 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1245 AM CDT
FOR EASTERN OLDHAM...NORTHERN HUTCHINSON...NORTHWESTERN POTTER...
WESTERN HANSFORD...SHERMAN...SOUTHEASTERN DALLAM...MOORE AND HARTLEY
COUNTIES...

At 1209 AM CDT, severe thunderstorms were located along a line
extending from 12 miles west of Gruver to 5 miles northwest of Boys
Ranch, moving southeast at 50 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...
Dumas, Dalhart, Stratford, Hartley, Cactus, Sunray, Stinnett, Gruver,
Channing, Boys Ranch, Pringle, Morse, Four Way, Conlen and Masterson.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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

&&

LAT...LON 3605 10295 3650 10161 3598 10108 3596 10109
      3528 10259
TIME...MOT...LOC 0509Z 306DEG 43KT 3626 10163 3556 10231 

HAIL...1.00IN
WIND...70MPH
 
$$

TLH

806 
WWUS54 KAMA 130534
SVSAMA

Severe Weather Statement
National Weather Service Amarillo TX
1234 AM CDT Sun Jun 13 2021

TXC111-130544-
/O.CAN.KAMA.SV.W.0149.000000T0000Z-210613T0545Z/
Dallam TX-
1234 AM CDT Sun Jun 13 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN DALLAM COUNTY IS
CANCELLED...

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

A Severe Thunderstorm Watch remains in effect until 300 AM CDT for
the Panhandle of Oklahoma...and the Panhandle of Texas.

LAT...LON 3606 10226 3606 10216 3612 10216 3650 10161
      3598 10108 3596 10109 3528 10259 3569 10278
TIME...MOT...LOC 0534Z 306DEG 43KT 3611 10137 3541 10205 

$$

TXC195-205-233-341-359-375-421-130545-
/O.CON.KAMA.SV.W.0149.000000T0000Z-210613T0545Z/
Oldham TX-Hutchinson TX-Potter TX-Hansford TX-Sherman TX-Moore TX-
Hartley TX-
1234 AM CDT Sun Jun 13 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1245 AM CDT
FOR EASTERN OLDHAM...NORTHERN HUTCHINSON...NORTHWESTERN POTTER...
WESTERN HANSFORD...SOUTHEASTERN SHERMAN...MOORE AND EASTERN HARTLEY
COUNTIES...

At 1234 AM CDT, severe thunderstorms were located along a line
extending from 6 miles northeast of Morse to 4 miles southeast of
Valley De Oro, moving southeast at 50 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...
Dumas, Hartley, Cactus, Sunray, Stinnett, Gruver, Channing, Morse,
Four Way, Boys Ranch, Masterson and Pringle.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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

&&

LAT...LON 3606 10226 3606 10216 3612 10216 3650 10161
      3598 10108 3596 10109 3528 10259 3569 10278
TIME...MOT...LOC 0534Z 306DEG 43KT 3611 10137 3541 10205 

HAIL...1.00IN
WIND...60MPH
 
$$

TLH

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 12, 10:02 PM CDT	Severe Thunderstorm Warning	AMA	Deaf Smith, Oldham	73 min
Jun 12, 10:28 PM CDT	Special Weather Statement	AMA	Dallam	32 min
Jun 12, 10:32 PM CDT	Severe Thunderstorm Warning	AMA	Dallam, Sherman	58 min
Jun 12, 11:01 PM CDT	Severe Thunderstorm Warning	AMA	Dallam, Hansford, Hartley, Moore, Sherman	74 min
Jun 12, 11:07 PM CDT	Severe Thunderstorm Warning	AMA	Deaf Smith, Hartley, Oldham	83 min
Jun 12, 11:51 PM CDT	Special Weather Statement	AMA	Deaf Smith	24 min
Jun 13, 12:15 AM CDT	Areal Flood Warning	AMA	Dallam, Hartley, Moore, Oldham, Potter, Sherman	2 hr
Jun 13, 12:22 AM CDT	Special Weather Statement	AMA	Randall	23 min
Jun 13, 12:28 AM CDT	Special Weather Statement	AMA	Deaf Smith	32 min
Jun 13, 12:42 AM CDT	Severe Thunderstorm Warning	AMA	Carson, Hansford, Hartley, Hutchinson, Moore, Ochiltree and 4 more	63 min
Jun 13, 1:15 AM CDT	Severe Thunderstorm Warning	AMA	Armstrong, Carson, Gray, Hutchinson, Potter, Randall and 1 more	45 min
Jun 13, 1:28 AM CDT	Areal Flood Advisory	AMA	Armstrong, Carson, Hutchinson	2 hr
Jun 13, 1:56 AM CDT	Severe Thunderstorm Warning	AMA	Armstrong, Carson, Donley, Gray, Hemphill, Hutchinson and 3 more	64 min
Jun 13, 2:37 AM CDT	Special Weather Statement	AMA	Sherman	23 min
Jun 13, 2:56 AM CDT	Special Weather Statement	AMA	Donley	34 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.