Alert archive / Texas / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 285, NWS Amarillo, TX

October 23, 2021Collingsworth County, Wheeler County, Texas

NWS Amarillo, TX issued this severe thunderstorm warning at Oct 23, 2021, 7:16 PM CDT for Collingsworth County, Wheeler County, Texas. It was in force for 36 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: Oct 23, 2021, 7:16 PM CDT (00:16 UTC)
Expired: Oct 23, 2021, 7:52 PM CDT
In force: 36 min
Issued by: NWS Amarillo, TX
Area: Storm-based polygon
Hail: 1.25 in
Wind: 60.0 mph

Counties Collingsworth County, TX, Wheeler County, TX

The radar

The Amarillo radar (KAMA), 129 km from the middle of the area, began a volume at 00:18 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, 0.3 hours before the alert went out and 128 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: 232 J/kg
Mixed-layer CIN: -42 J/kg
Mixed-layer LCL: 2846 m above ground
0-6 km bulk shear: 20 kt
0-1 km storm-relative helicity: 41 m²/s²
0-3 km storm-relative helicity: 102 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

Open this sounding in Storm Lab

The text

As transmitted.

611 
WUUS54 KAMA 240016
SVRAMA
TXC087-483-240145-
/O.NEW.KAMA.SV.W.0285.211024T0016Z-211024T0145Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Amarillo TX
716 PM CDT Sat Oct 23 2021

The National Weather Service in Amarillo has issued a

* Severe Thunderstorm Warning for...
  Southeastern Wheeler County in the Panhandle of Texas...
  Northern Collingsworth County in the Panhandle of Texas...

* Until 845 PM CDT.

* At 716 PM CDT, a severe thunderstorm was located 6 miles northwest
  of Dozier, or 12 miles southwest of Shamrock, moving northeast at
  25 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...
  Shamrock, Dozier, Lela and Twitty. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

To report severe weather, contact your nearest law enforcement
agency. They will send your report to the National Weather Service
office in Amarillo.

&&

LAT...LON 3504 10046 3515 10054 3559 10000 3516 10000
TIME...MOT...LOC 0016Z 236DEG 22KT 3514 10044 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.25 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

Ferguson

3 follow-up statements

494 
WWUS54 KAMA 240028
SVSAMA

Severe Weather Statement
National Weather Service Amarillo TX
728 PM CDT Sat Oct 23 2021

TXC087-483-240145-
/O.CON.KAMA.SV.W.0285.000000T0000Z-211024T0145Z/
Wheeler TX-Collingsworth TX-
728 PM CDT Sat Oct 23 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 845 PM CDT
FOR SOUTHEASTERN WHEELER AND NORTHERN COLLINGSWORTH COUNTIES...

At 728 PM CDT, a severe thunderstorm was located near Lela, or 7
miles west of Shamrock, moving northeast at 25 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...
Shamrock, Lela and Twitty. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

To report severe weather contact your nearest law enforcement agency.
They will send your report to the National Weather Service office in
Amarillo.

&&

LAT...LON 3507 10041 3519 10049 3559 10000 3516 10000
TIME...MOT...LOC 0028Z 236DEG 22KT 3518 10036 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

Ferguson

988 
WWUS54 KAMA 240043
SVSAMA

Severe Weather Statement
National Weather Service Amarillo TX
743 PM CDT Sat Oct 23 2021

TXC087-240053-
/O.CAN.KAMA.SV.W.0285.000000T0000Z-211024T0145Z/
Collingsworth TX-
743 PM CDT Sat Oct 23 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN COLLINGSWORTH 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 3518 10036 3524 10042 3559 10000 3518 10000
TIME...MOT...LOC 0043Z 236DEG 22KT 3523 10027 

$$

TXC483-240145-
/O.CON.KAMA.SV.W.0285.000000T0000Z-211024T0145Z/
Wheeler TX-
743 PM CDT Sat Oct 23 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 845 PM CDT
FOR SOUTHEASTERN WHEELER COUNTY...

At 743 PM CDT, a severe thunderstorm was located over Shamrock,
moving northeast at 25 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...
Shamrock, Lela and Twitty. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

To report severe weather contact your nearest law enforcement agency.
They will send your report to the National Weather Service office in
Amarillo.

&&

LAT...LON 3518 10036 3524 10042 3559 10000 3518 10000
TIME...MOT...LOC 0043Z 236DEG 22KT 3523 10027 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

Ferguson

661 
WWUS54 KAMA 240052
SVSAMA

Severe Weather Statement
National Weather Service Amarillo TX
752 PM CDT Sat Oct 23 2021

TXC483-240102-
/O.CAN.KAMA.SV.W.0285.000000T0000Z-211024T0145Z/
Wheeler TX-
752 PM CDT Sat Oct 23 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN WHEELER COUNTY 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 3518 10036 3524 10042 3559 10000 3518 10000
TIME...MOT...LOC 0049Z 236DEG 22KT 3526 10021 

$$

Ferguson

The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 23, 7:01 PM CDT	Special Weather Statement	AMA	Collingsworth	29 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.