Alert archive / Texas / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 197, NWS Amarillo, TX

July 5, 20214 counties in Texas

NWS Amarillo, TX issued this severe thunderstorm warning at Jul 5, 2021, 12:01 AM CDT for 4 counties in Texas. It was in force for 59 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: Jul 5, 2021, 12:01 AM CDT (05:01 UTC)
Expired: Jul 5, 2021, 1:00 AM CDT
In force: 59 min
Issued by: NWS Amarillo, TX
Area: Storm-based polygon
Hail: 1.25 in
Wind: 60.0 mph

Counties Armstrong County, TX, Carson County, TX, Donley County, TX, Gray County, TX

The radar

The Amarillo radar (KAMA), 63 km from the middle of the area, began a volume at 05:01 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 nearest sounding before it

Amarillo Airport, TX (KAMA), launched 00:00Z, 5.0 hours before the alert went out and 63 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: 2304 J/kg
Mixed-layer CIN: -21 J/kg
Mixed-layer LCL: 1243 m above ground
0-6 km bulk shear: 31 kt
0-1 km storm-relative helicity: 26 m²/s²
0-3 km storm-relative helicity: 146 m²/s²
Significant tornado parameter: 1.2
Supercell composite: 7.9

Open this sounding in Storm Lab

The text

As transmitted.

839 
WUUS54 KAMA 050501
SVRAMA
TXC011-065-129-179-050600-
/O.NEW.KAMA.SV.W.0197.210705T0501Z-210705T0600Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Amarillo TX
1201 AM CDT Mon Jul 5 2021

The National Weather Service in Amarillo has issued a

* Severe Thunderstorm Warning for...
  Northeastern Armstrong County in the Panhandle of Texas...
  Southeastern Carson County in the Panhandle of Texas...
  Western Gray County in the Panhandle of Texas...
  Northwestern Donley County in the Panhandle of Texas...

* Until 100 AM CDT.

* At 1201 AM CDT, a severe thunderstorm was located 8 miles north of
  Groom, or 16 miles south of Pampa, moving southwest at 20 mph.

  HAZARD...60 mph wind gusts and half dollar size hail.

  SOURCE...Radar indicated.

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

* Locations impacted include...
  Pampa, Groom, Lefors and Kingsmill. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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

&&

LAT...LON 3560 10103 3547 10066 3502 10110 3521 10136
TIME...MOT...LOC 0501Z 040DEG 17KT 3532 10106 

HAIL...1.25IN
WIND...60MPH
 
$$

DGW

3 follow-up statements

491 
WWUS54 KAMA 050512
SVSAMA

Severe Weather Statement
National Weather Service Amarillo TX
1212 AM CDT Mon Jul 5 2021

TXC011-065-129-179-050600-
/O.CON.KAMA.SV.W.0197.000000T0000Z-210705T0600Z/
Armstrong TX-Carson TX-Gray TX-Donley TX-
1212 AM CDT Mon Jul 5 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 100 AM CDT
FOR NORTHEASTERN ARMSTRONG...SOUTHEASTERN CARSON...WESTERN GRAY AND
NORTHWESTERN DONLEY COUNTIES...

At 1211 AM CDT, a severe thunderstorm was located 5 miles north of
Groom, or 16 miles east of Panhandle, moving southwest at 20 mph.

HAZARD...Ping pong ball size hail and 60 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...Minor damage to roofs, siding, and trees is possible. 
         People and animals outdoors will be injured. Expect hail 
         damage to roofs, siding, windows, and vehicles.

Locations impacted include...
Pampa, Groom, Lefors and Kingsmill. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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

&&

LAT...LON 3560 10103 3547 10066 3502 10110 3521 10136
TIME...MOT...LOC 0511Z 040DEG 17KT 3528 10110 

HAIL...1.50IN
WIND...60MPH
 
$$

DGW

661 
WWUS54 KAMA 050527
SVSAMA

Severe Weather Statement
National Weather Service Amarillo TX
1227 AM CDT Mon Jul 5 2021

TXC011-065-129-179-050600-
/O.CON.KAMA.SV.W.0197.000000T0000Z-210705T0600Z/
Armstrong TX-Carson TX-Gray TX-Donley TX-
1227 AM CDT Mon Jul 5 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 100 AM CDT
FOR NORTHEASTERN ARMSTRONG...SOUTHEASTERN CARSON...WESTERN GRAY AND
NORTHWESTERN DONLEY COUNTIES...

At 1227 AM CDT, a severe thunderstorm was located near Groom, or 14
miles northeast of Claude, moving southwest at 20 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...
Pampa, Groom and Kingsmill. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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

&&

LAT...LON 3560 10103 3530 10083 3502 10110 3521 10136
TIME...MOT...LOC 0527Z 040DEG 17KT 3523 10116 

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

DGW

019 
WWUS54 KAMA 050542
SVSAMA

Severe Weather Statement
National Weather Service Amarillo TX
1242 AM CDT Mon Jul 5 2021

TXC011-065-129-179-050600-
/O.CON.KAMA.SV.W.0197.000000T0000Z-210705T0600Z/
Armstrong TX-Carson TX-Gray TX-Donley TX-
1242 AM CDT Mon Jul 5 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 100 AM CDT
FOR NORTHEASTERN ARMSTRONG...SOUTHEASTERN CARSON...SOUTHWESTERN GRAY
AND NORTHWESTERN DONLEY COUNTIES...

At 1242 AM CDT, a severe thunderstorm was located 6 miles west of
Groom, or 9 miles northeast of Claude, moving southwest at 20 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...
Groom.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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

&&

LAT...LON 3540 10120 3525 10088 3502 10110 3521 10136
TIME...MOT...LOC 0542Z 040DEG 17KT 3517 10122 

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

DGW

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 4, 7:06 PM CDT	Severe Thunderstorm Warning	AMA	Hartley, Oldham	84 min
Jul 4, 7:31 PM CDT	Severe Thunderstorm Warning	AMA	Dallam	89 min
Jul 4, 7:42 PM CDT	Severe Thunderstorm Warning	AMA	Dallam, Hansford, Sherman	93 min
Jul 4, 7:43 PM CDT	Areal Flood Advisory	AMA	Deaf Smith, Oldham	90 min
Jul 4, 7:52 PM CDT	Severe Thunderstorm Warning	AMA	Deaf Smith, Oldham	83 min
Jul 4, 9:00 PM CDT	Severe Thunderstorm Warning	AMA	Dallam	50 min
Jul 4, 9:00 PM CDT	Severe Thunderstorm Warning	AMA	Hartley, Moore, Sherman	60 min
Jul 4, 9:52 PM CDT	Areal Flood Advisory	AMA	Dallam, Hartley	53 min
Jul 4, 10:28 PM CDT	Special Weather Statement	AMA	Oldham	62 min
Jul 4, 10:40 PM CDT	Severe Thunderstorm Warning	AMA	Hartley, Oldham	65 min
Jul 4, 11:05 PM CDT	Severe Thunderstorm Warning	AMA	Deaf Smith, Oldham, Potter, Randall	55 min
Jul 4, 11:28 PM CDT	Special Weather Statement	AMA	Deaf Smith	47 min
Jul 4, 11:36 PM CDT	Special Weather Statement	AMA	Gray	24 min
Jul 4, 11:39 PM CDT	Special Weather Statement	AMA	Randall	36 min
Jul 5, 12:35 AM CDT	Special Weather Statement	AMA	Gray	25 min
Jul 5, 12:59 AM CDT	Severe Thunderstorm Warning	AMA	Armstrong, Carson	61 min
Jul 5, 1:31 AM CDT	Severe Thunderstorm Warning	AMA	Armstrong, Carson, Potter, Randall	74 min
Jul 5, 2:34 AM CDT	Flash Flood Warning	AMA	Randall	112 min
Jul 5, 2:43 AM CDT	Special Weather Statement	AMA	Randall	47 min
Jul 5, 2:57 AM CDT	Areal Flood Advisory	AMA	Donley	3 hr
Jul 5, 6:38 AM CDT	Areal Flood Advisory	AMA	Collingsworth, Wheeler	3 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.