Alert archive / Texas / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 241, NWS Amarillo, TX

August 7, 2021Armstrong County, Carson County, Texas

NWS Amarillo, TX issued this severe thunderstorm warning at Aug 7, 2021, 7:31 PM CDT for Armstrong County, Carson County, Texas. It was in force for 33 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: Aug 7, 2021, 7:31 PM CDT (00:31 UTC)
Expired: Aug 7, 2021, 8:04 PM CDT
In force: 33 min
Issued by: NWS Amarillo, TX
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Armstrong County, TX, Carson County, TX

The radar

The Amarillo radar (KAMA), 29 km from the middle of the area, began a volume at 00:33 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, 0.5 hours before the alert went out and 29 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: 2016 J/kg
Mixed-layer CIN: -122 J/kg
Mixed-layer LCL: 2104 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: 36 m²/s²
0-3 km storm-relative helicity: 133 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.1

Open this sounding in Storm Lab

The text

As transmitted.

114 
WUUS54 KAMA 080031
SVRAMA
TXC011-065-080130-
/O.NEW.KAMA.SV.W.0241.210808T0031Z-210808T0130Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Amarillo TX
731 PM CDT Sat Aug 7 2021

The National Weather Service in Amarillo has issued a

* Severe Thunderstorm Warning for...
  Northern Armstrong County in the Panhandle of Texas...
  Carson County in the Panhandle of Texas...

* Until 830 PM CDT.

* At 730 PM CDT, a severe thunderstorm was located 6 miles northwest
  of Washburn, or 11 miles east of Amarillo, moving east at 20 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Automated weather equipment.

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

* Locations impacted include...
  Panhandle, Claude, White Deer, Groom, Washburn and Pantex. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3548 10162 3558 10109 3513 10109 3499 10163
TIME...MOT...LOC 0030Z 248DEG 19KT 3524 10166 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

LFM

1 follow-up statement

699 
WWUS54 KAMA 080104
SVSAMA

Severe Weather Statement
National Weather Service Amarillo TX
804 PM CDT Sat Aug 7 2021

TXC011-065-080113-
/O.CAN.KAMA.SV.W.0241.000000T0000Z-210808T0130Z/
Armstrong TX-Carson TX-
804 PM CDT Sat Aug 7 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN ARMSTRONG AND CARSON
COUNTIES IS CANCELLED...
                
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 has been cancelled.  However gusty winds are
still possible with this thunderstorm.

LAT...LON 3548 10162 3558 10109 3513 10109 3499 10163
TIME...MOT...LOC 0100Z 248DEG 19KT 3531 10146 

$$

LFM

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 7, 7:04 PM CDT	Severe Thunderstorm Warning	AMA	Potter, Randall	56 min
Aug 7, 7:16 PM CDT	Severe Thunderstorm Warning	AMA	Dallam, Hartley, Moore, Sherman	44 min
Aug 7, 7:46 PM CDT	Special Weather Statement	AMA	Hansford, Sherman	29 min
Aug 7, 8:00 PM CDT	Severe Thunderstorm Warning	AMA	Hansford, Lipscomb, Ochiltree, Sherman	60 min
Aug 7, 8:02 PM CDT	Special Weather Statement	AMA	Moore	28 min
Aug 7, 8:57 PM CDT	Special Weather Statement	AMA	Ochiltree	63 min
Aug 7, 9:50 PM CDT	Special Weather Statement	AMA	Hutchinson	55 min
Aug 7, 9:53 PM CDT	Severe Thunderstorm Warning	AMA	Hartley	26 min
Aug 7, 10:09 PM CDT	Special Weather Statement	AMA	Lipscomb	36 min
Aug 7, 10:22 PM CDT	Special Weather Statement	AMA	Moore	38 min
Aug 7, 10:42 PM CDT	Special Weather Statement	AMA	Gray	63 min
Aug 7, 10:46 PM CDT	Severe Thunderstorm Warning Considerable damage threat	AMA	Carson, Gray, Hutchinson, Roberts	59 min
Aug 7, 11:24 PM CDT	Special Weather Statement	AMA	Hansford, Hutchinson	36 min
Aug 7, 11:42 PM CDT	Special Weather Statement	AMA	Gray	33 min
Aug 8, 12:06 AM CDT	Special Weather Statement	AMA	Carson, Roberts	24 min
Aug 8, 12:29 AM CDT	Special Weather Statement	AMA	Hemphill	46 min
Aug 8, 12:51 AM CDT	Special Weather Statement	AMA	Gray	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.