Alert archive / Texas / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 220, NWS Amarillo, TX

July 25, 20214 counties in Texas

NWS Amarillo, TX issued this severe thunderstorm warning at Jul 25, 2021, 3:33 PM CDT for 4 counties in Texas. It was in force for 42 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 25, 2021, 3:33 PM CDT (20:33 UTC)
Expired: Jul 25, 2021, 4:15 PM CDT
In force: 42 min
Issued by: NWS Amarillo, TX
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Armstrong County, TX, Carson County, TX, Potter County, TX, Randall County, TX

The radar

The Amarillo radar (KAMA), 6 km from the middle of the area, began a volume at 20:36 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 12:00Z, 8.6 hours before the alert went out and 5 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: 769 J/kg
Mixed-layer CIN: -114 J/kg
Mixed-layer LCL: 1898 m above ground
0-6 km bulk shear: 3 kt
0-1 km storm-relative helicity: -59 m²/s²
0-3 km storm-relative helicity: 21 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

130 
WUUS54 KAMA 252033
SVRAMA
TXC011-065-375-381-252115-
/O.NEW.KAMA.SV.W.0220.210725T2033Z-210725T2115Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Amarillo TX
333 PM CDT Sun Jul 25 2021

The National Weather Service in Amarillo has issued a

* Severe Thunderstorm Warning for...
  Northwestern Armstrong County in the Panhandle of Texas...
  Northeastern Randall County in the Panhandle of Texas...
  Southwestern Carson County in the Panhandle of Texas...
  Southeastern Potter County in the Panhandle of Texas...

* Until 415 PM CDT.

* At 332 PM CDT, a severe thunderstorm was located over Washburn, or
  13 miles northwest of Claude, moving south at 10 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...
  Amarillo and Washburn. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3532 10179 3531 10142 3506 10143 3507 10180
TIME...MOT...LOC 2032Z 011DEG 9KT 3521 10157 

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

LFM

1 follow-up statement

420 
WWUS54 KAMA 252105
SVSAMA

Severe Weather Statement
National Weather Service Amarillo TX
405 PM CDT Sun Jul 25 2021

TXC011-065-375-381-252115-
/O.EXP.KAMA.SV.W.0220.000000T0000Z-210725T2115Z/
Armstrong TX-Randall TX-Carson TX-Potter TX-
405 PM CDT Sun Jul 25 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN ARMSTRONG...
NORTHEASTERN RANDALL...SOUTHWESTERN CARSON AND SOUTHEASTERN POTTER
COUNTIES WILL EXPIRE AT 415 PM CDT...
        
The storm which prompted the warning has weakened below severe
limits, and has exited the warned area. Therefore, the warning will
be allowed to expire.  However gusty winds and heavy rain are still
possible with this thunderstorm.

LAT...LON 3532 10179 3531 10142 3506 10143 3507 10180
TIME...MOT...LOC 2105Z 011DEG 9KT 3513 10159 

$$

LFM

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 25, 2:03 PM CDT	Special Weather Statement	AMA	Oldham	27 min
Jul 25, 2:37 PM CDT	Special Weather Statement	AMA	Randall	23 min
Jul 25, 2:51 PM CDT	Special Weather Statement	AMA	Armstrong	24 min
Jul 25, 3:00 PM CDT	Severe Thunderstorm Warning	AMA	Armstrong	60 min
Jul 25, 3:13 PM CDT	Special Weather Statement	AMA	Randall	32 min
Jul 25, 3:24 PM CDT	Special Weather Statement	AMA	Carson, Gray	36 min
Jul 25, 3:44 PM CDT	Special Weather Statement	AMA	Donley	31 min
Jul 25, 3:52 PM CDT	Special Weather Statement	AMA	Ochiltree	38 min
Jul 25, 3:58 PM CDT	Special Weather Statement	AMA	Gray	32 min
Jul 25, 4:07 PM CDT	Severe Thunderstorm Warning	AMA	Donley, Gray	23 min
Jul 25, 4:26 PM CDT	Severe Thunderstorm Warning	AMA	Donley, Gray	64 min
Jul 25, 4:36 PM CDT	Special Weather Statement	AMA	Ochiltree	24 min
Jul 25, 4:44 PM CDT	Severe Thunderstorm Warning	AMA	Roberts	61 min
Jul 25, 5:03 PM CDT	Severe Thunderstorm Warning	AMA	Lipscomb	27 min
Jul 25, 5:08 PM CDT	Severe Thunderstorm Warning	AMA	Collingsworth, Wheeler	37 min
Jul 25, 5:28 PM CDT	Special Weather Statement	AMA	Hemphill	32 min
Jul 25, 5:40 PM CDT	Severe Thunderstorm Warning	AMA	Hemphill, Roberts, Wheeler	65 min
Jul 25, 5:44 PM CDT	Special Weather Statement	AMA	Wheeler	31 min
Jul 25, 6:11 PM CDT	Special Weather Statement	AMA	Moore	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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.