Alert archive / Texas / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 27, NWS Amarillo, TX

April 23, 2021Armstrong County, Donley County, Texas

NWS Amarillo, TX issued this severe thunderstorm warning at Apr 23, 2021, 4:54 PM CDT for Armstrong County, Donley County, Texas. It was in force for 66 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: Apr 23, 2021, 4:54 PM CDT (21:54 UTC)
Expired: Apr 23, 2021, 6:00 PM CDT
In force: 66 min
Issued by: NWS Amarillo, TX
Area: Storm-based polygon
Hail: 1.5 in
Wind: 60.0 mph

Counties Armstrong County, TX, Donley County, TX

The radar

The Amarillo radar (KAMA), 71 km from the middle of the area, began a volume at 21:55 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, 9.9 hours before the alert went out and 70 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1968 m above ground
0-6 km bulk shear: 39 kt
0-1 km storm-relative helicity: 245 m²/s²
0-3 km storm-relative helicity: 248 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

392 
WUUS54 KAMA 232154
SVRAMA
TXC011-129-232300-
/O.NEW.KAMA.SV.W.0027.210423T2154Z-210423T2300Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Amarillo TX
454 PM CDT Fri Apr 23 2021

The National Weather Service in Amarillo has issued a

* Severe Thunderstorm Warning for...
  Southeastern Armstrong County in the Panhandle of Texas...
  Southern Donley County in the Panhandle of Texas...

* Until 600 PM CDT.

* At 454 PM CDT, a severe thunderstorm was located 7 miles south of
  Goodnight, or 15 miles west of Clarendon, moving east at 35 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...
  Clarendon, Howardwick, Hedley, Lelia Lake and Greenbelt Lake. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3475 10130 3485 10132 3499 10127 3508 10093
      3506 10061 3475 10067
TIME...MOT...LOC 2154Z 280DEG 28KT 3492 10117 

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

DGW

2 follow-up statements

538 
WWUS54 KAMA 232236
SVSAMA

Severe Weather Statement
National Weather Service Amarillo TX
536 PM CDT Fri Apr 23 2021

TXC011-232245-
/O.CAN.KAMA.SV.W.0027.000000T0000Z-210423T2300Z/
Armstrong TX-
536 PM CDT Fri Apr 23 2021

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

LAT...LON 3478 10109 3499 10102 3508 10093 3506 10061
      3475 10067 3475 10109
TIME...MOT...LOC 2235Z 280DEG 28KT 3486 10078 

$$

TXC129-232300-
/O.CON.KAMA.SV.W.0027.000000T0000Z-210423T2300Z/
Donley TX-
536 PM CDT Fri Apr 23 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 600 PM CDT
FOR SOUTHERN DONLEY COUNTY...

At 535 PM CDT, a severe thunderstorm was located over Lelia Lake, or
8 miles southeast of Clarendon, moving east at 30 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...
Clarendon, Howardwick, Hedley, Lelia Lake and Greenbelt Lake. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3478 10109 3499 10102 3508 10093 3506 10061
      3475 10067 3475 10109
TIME...MOT...LOC 2235Z 280DEG 28KT 3486 10078 

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

DGW

868 
WWUS54 KAMA 232259
SVSAMA

Severe Weather Statement
National Weather Service Amarillo TX
559 PM CDT Fri Apr 23 2021

TXC129-232308-
/O.EXP.KAMA.SV.W.0027.000000T0000Z-210423T2300Z/
Donley TX-
559 PM CDT Fri Apr 23 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN DONLEY COUNTY WILL
EXPIRE AT 600 PM 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 small 
hail and gusty winds are still possible with this thunderstorm.  A 
Special Weather Statement has replaced this warning. 

LAT...LON 3478 10109 3499 10102 3508 10093 3506 10061
      3475 10067 3475 10109
TIME...MOT...LOC 2258Z 280DEG 28KT 3483 10057 

$$

DGW

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 23, 3:51 PM CDT	Special Weather Statement	AMA	Hartley	24 min
Apr 23, 4:15 PM CDT	Special Weather Statement	AMA	Hartley	30 min
Apr 23, 4:28 PM CDT	Severe Thunderstorm Warning	AMA	Armstrong, Donley	62 min
Apr 23, 4:48 PM CDT	Special Weather Statement	AMA	Hartley	27 min
Apr 23, 5:01 PM CDT	Special Weather Statement	AMA	Carson	29 min
Apr 23, 5:19 PM CDT	Special Weather Statement	AMA	Carson	26 min
Apr 23, 5:28 PM CDT	Severe Thunderstorm Warning	AMA	Carson, Gray	62 min
Apr 23, 5:34 PM CDT	Severe Thunderstorm Warning	AMA	Carson, Hutchinson, Moore, Roberts	56 min
Apr 23, 5:58 PM CDT	Special Weather Statement	AMA	Donley	32 min
Apr 23, 6:24 PM CDT	Special Weather Statement	AMA	Gray	36 min
Apr 23, 6:28 PM CDT	Special Weather Statement	AMA	Hutchinson	32 min
Apr 23, 6:59 PM CDT	Special Weather Statement	AMA	Gray	31 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.