Alert archive / Texas / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 274, NWS Amarillo, TX

September 17, 2021Collingsworth County, Texas

NWS Amarillo, TX issued this severe thunderstorm warning at Sep 17, 2021, 7:16 PM CDT for Collingsworth County, Texas. It was in force for 74 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: Sep 17, 2021, 7:16 PM CDT (00:16 UTC)
Expired: Sep 17, 2021, 8:30 PM CDT
In force: 74 min
Issued by: NWS Amarillo, TX
Area: Storm-based polygon
Damage threat: Considerable
Hail: 1.25 in
Wind: 70.0 mph

County Collingsworth County, TX

The radar

The Amarillo radar (KAMA), 134 km from the middle of the area, began a volume at 00:19 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 133 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: 78 J/kg
Mixed-layer CIN: -409 J/kg
Mixed-layer LCL: 1740 m above ground
0-6 km bulk shear: 16 kt
0-1 km storm-relative helicity: 76 m²/s²
0-3 km storm-relative helicity: 209 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

992 
WUUS54 KAMA 180016
SVRAMA
TXC087-180145-
/O.NEW.KAMA.SV.W.0274.210918T0016Z-210918T0145Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Amarillo TX
716 PM CDT Fri Sep 17 2021

The National Weather Service in Amarillo has issued a

* Severe Thunderstorm Warning for...
  Southwestern Collingsworth County in the Panhandle of Texas...

* Until 845 PM CDT.

* At 716 PM CDT, a severe thunderstorm was located 4 miles southwest
  of Lutie, or 8 miles northwest of Wellington, moving south at 10
  mph.

  HAZARD...70 mph wind gusts and half dollar size hail.

  SOURCE...Radar indicated.

  IMPACT...Expect some tree damage. Damage is likely to mobile 
           homes, roofs, and outbuildings. Hail damage to vehicles 
           is expected.

* Locations impacted include...
  Wellington and Lutie. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 3499 10038 3502 10035 3504 10028 3502 10018
      3496 10015 3475 10011 3475 10045
TIME...MOT...LOC 0016Z 003DEG 8KT 3497 10027 

THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.25 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...70 MPH

$$

Ward

5 follow-up statements

212 
WWUS54 KAMA 180029
SVSAMA

Severe Weather Statement
National Weather Service Amarillo TX
729 PM CDT Fri Sep 17 2021

TXC087-180145-
/O.CON.KAMA.SV.W.0274.000000T0000Z-210918T0145Z/
Collingsworth TX-
729 PM CDT Fri Sep 17 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 845 PM CDT
FOR SOUTHWESTERN COLLINGSWORTH COUNTY...

At 729 PM CDT, a severe thunderstorm was located 5 miles northwest of
Wellington, moving south at 10 mph.

HAZARD...60 mph wind gusts and nickel size hail.

SOURCE...Radar indicated.

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

Locations impacted include...
Wellington and Lutie. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 3499 10038 3502 10035 3504 10028 3502 10018
      3496 10015 3475 10011 3475 10045
TIME...MOT...LOC 0029Z 004DEG 10KT 3492 10028 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.88IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

Ward

733 
WWUS54 KAMA 180043
SVSAMA

Severe Weather Statement
National Weather Service Amarillo TX
743 PM CDT Fri Sep 17 2021

TXC087-180145-
/O.CON.KAMA.SV.W.0274.000000T0000Z-210918T0145Z/
Collingsworth TX-
743 PM CDT Fri Sep 17 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 845 PM CDT
FOR SOUTHWESTERN COLLINGSWORTH COUNTY...

At 743 PM CDT, a severe thunderstorm was located 4 miles west of
Wellington, moving south at 10 mph.

HAZARD...60 mph wind gusts and nickel size hail.

SOURCE...Radar indicated.

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

Locations impacted include...
Wellington and Quail.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 3492 10040 3496 10034 3497 10025 3497 10019
      3496 10015 3475 10011 3475 10045
TIME...MOT...LOC 0043Z 005DEG 10KT 3487 10029 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.88IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

Ward

914 
WWUS54 KAMA 180051
SVSAMA

Severe Weather Statement
National Weather Service Amarillo TX
751 PM CDT Fri Sep 17 2021

TXC087-180145-
/O.CON.KAMA.SV.W.0274.000000T0000Z-210918T0145Z/
Collingsworth TX-
751 PM CDT Fri Sep 17 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 845 PM CDT
FOR SOUTHWESTERN COLLINGSWORTH COUNTY...

At 751 PM CDT, a severe thunderstorm was located 6 miles west of
Wellington, moving south at 15 mph.

HAZARD...70 mph wind gusts and quarter size hail.

SOURCE...Radar indicated.

IMPACT...Expect some tree damage. Damage is likely to mobile homes, 
         roofs, and outbuildings. Hail damage to vehicles is 
         expected.

Locations impacted include...
Wellington.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 3491 10040 3493 10034 3493 10026 3490 10022
      3475 10015 3475 10045
TIME...MOT...LOC 0051Z 002DEG 13KT 3483 10032 

THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...70 MPH

$$

Ward

418 
WWUS54 KAMA 180107
SVSAMA

Severe Weather Statement
National Weather Service Amarillo TX
807 PM CDT Fri Sep 17 2021

TXC087-180145-
/O.CON.KAMA.SV.W.0274.000000T0000Z-210918T0145Z/
Collingsworth TX-
807 PM CDT Fri Sep 17 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 845 PM CDT
FOR SOUTH CENTRAL COLLINGSWORTH COUNTY...

At 807 PM CDT, a severe thunderstorm was located 9 miles southwest of
Wellington, moving south at 15 mph.

HAZARD...70 mph wind gusts and quarter size hail.

SOURCE...Radar indicated.

IMPACT...Expect some tree damage. Damage is likely to mobile homes, 
         roofs, and outbuildings. Hail damage to vehicles is 
         expected.

This severe thunderstorm will remain over mainly rural areas of south
central Collingsworth County.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 3481 10043 3485 10035 3484 10028 3482 10022
      3475 10022 3475 10045
TIME...MOT...LOC 0107Z 003DEG 14KT 3476 10033 

THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...70 MPH

$$

Ward

927 
WWUS54 KAMA 180130
SVSAMA

Severe Weather Statement
National Weather Service Amarillo TX
830 PM CDT Fri Sep 17 2021

TXC087-180140-
/O.CAN.KAMA.SV.W.0274.000000T0000Z-210918T0145Z/
Collingsworth TX-
830 PM CDT Fri Sep 17 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTH CENTRAL COLLINGSWORTH
COUNTY IS CANCELLED...
        
The storm which prompted the warning has moved out of the area.
Therefore, the warning has been cancelled.

LAT...LON 3481 10043 3485 10035 3484 10028 3482 10022
      3475 10022 3475 10045
TIME...MOT...LOC 0127Z 003DEG 8KT 3471 10033 

$$

Ward

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 17, 7:07 PM CDT	Areal Flood Advisory	AMA	Collingsworth	3 hr
Sep 17, 7:21 PM CDT	Special Weather Statement	AMA	Hemphill, Wheeler	24 min
Sep 17, 7:49 PM CDT	Special Weather Statement	AMA	Wheeler	26 min
Sep 17, 8:23 PM CDT	Special Weather Statement	AMA	Wheeler	37 min
Sep 17, 8:38 PM CDT	Special Weather Statement	AMA	Lipscomb	37 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.