Alert archive / Texas / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 227, NWS Amarillo, TX

July 25, 2021Hemphill County, Roberts County, Wheeler County, Texas

NWS Amarillo, TX issued this severe thunderstorm warning at Jul 25, 2021, 5:40 PM CDT for Hemphill County, Roberts County, Wheeler County, Texas. It was in force for 65 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, 5:40 PM CDT (22:40 UTC)
Expired: Jul 25, 2021, 6:45 PM CDT
In force: 65 min
Issued by: NWS Amarillo, TX
Area: Storm-based polygon
Hail: 1.5 in
Wind: 60.0 mph

Counties Hemphill County, TX, Roberts County, TX, Wheeler County, TX

The radar

The Amarillo radar (KAMA), 123 km from the middle of the area, began a volume at 22:42 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, 10.7 hours before the alert went out and 122 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.

163 
WUUS54 KAMA 252240
SVRAMA
TXC211-393-483-252345-
/O.NEW.KAMA.SV.W.0227.210725T2240Z-210725T2345Z/

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

The National Weather Service in Amarillo has issued a

* Severe Thunderstorm Warning for...
  Northwestern Wheeler County in the Panhandle of Texas...
  Southeastern Roberts County in the Panhandle of Texas...
  Southwestern Hemphill County in the Panhandle of Texas...

* Until 645 PM CDT.

* At 540 PM CDT, a severe thunderstorm was located over Lora, or 5
  miles northeast of Miami, moving southeast at 10 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...
  Canadian, Miami, Briscoe and Lora. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3555 10028 3559 10054 3562 10054 3562 10070
      3593 10068 3594 10027
TIME...MOT...LOC 2240Z 302DEG 10KT 3576 10060 

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

LFM

2 follow-up statements

631 
WWUS54 KAMA 252312
SVSAMA

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

TXC393-483-252322-
/O.CAN.KAMA.SV.W.0227.000000T0000Z-210725T2345Z/
Wheeler TX-Roberts TX-
612 PM CDT Sun Jul 25 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN WHEELER AND
SOUTHEASTERN ROBERTS COUNTIES IS CANCELLED...
    
The severe thunderstorm which prompted the warning has moved out of 
the warned area. Therefore, the warning has been cancelled.

LAT...LON 3562 10028 3562 10054 3593 10054 3594 10027
TIME...MOT...LOC 2312Z 285DEG 13KT 3574 10043 

$$

TXC211-252345-
/O.CON.KAMA.SV.W.0227.000000T0000Z-210725T2345Z/
Hemphill TX-
612 PM CDT Sun Jul 25 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 645 PM CDT
FOR SOUTHWESTERN HEMPHILL COUNTY...

At 612 PM CDT, a severe thunderstorm was located 7 miles east of
Lora, or 11 miles south of Canadian, moving east at 15 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...
Canadian.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3562 10028 3562 10054 3593 10054 3594 10027
TIME...MOT...LOC 2312Z 285DEG 13KT 3574 10043 

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

LFM

374 
WWUS54 KAMA 252337
SVSAMA

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

TXC211-252347-
/O.EXP.KAMA.SV.W.0227.000000T0000Z-210725T2345Z/
Hemphill TX-
637 PM CDT Sun Jul 25 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN HEMPHILL COUNTY
WILL EXPIRE AT 645 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 3562 10028 3562 10054 3593 10054 3594 10027
TIME...MOT...LOC 2337Z 302DEG 10KT 3570 10036 

$$

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, 3:33 PM CDT	Severe Thunderstorm Warning	AMA	Armstrong, Carson, Potter, Randall	42 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, 5:44 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.