Alert archive / Texas / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 243, NWS Amarillo, TX

August 7, 2021Hartley County, Texas

NWS Amarillo, TX issued this severe thunderstorm warning at Aug 7, 2021, 9:53 PM CDT for Hartley County, Texas. It was in force for 26 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
Aug 7, 2021, 9:53 PM CDT (02:53 UTC)
Expired
Aug 7, 2021, 10:19 PM CDT
In force
26 min
Issued by
NWS Amarillo, TX
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

County Hartley County, TX

The radar

The Amarillo radar (KAMA), 98 km from the middle of the area, began a volume at 02:54 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Aug 7, 4:01 PM CDTSevere Thunderstorm WatchSPC7 hr

The nearest sounding before it

Amarillo Airport, TX (KAMA), launched 00:00Z, 2.9 hours before the alert went out and 99 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-pSkew-T log-p diagram, Amarillo Airport, TX at 00:00Z on 2021-08-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2016 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Amarillo Airport, TX at 00:00Z on 2021-08-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 36 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
2016 J/kg
Mixed-layer CIN
-122 J/kg
Mixed-layer LCL
2104 m above ground
0-6 km bulk shear
28 kt
0-1 km storm-relative helicity
36 m²/s²
0-3 km storm-relative helicity
133 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.1

Open this sounding in Storm Lab

The text

As transmitted.

296 
WUUS54 KAMA 080253
SVRAMA
TXC205-080345-
/O.NEW.KAMA.SV.W.0243.210808T0253Z-210808T0345Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Amarillo TX
953 PM CDT Sat Aug 7 2021

The National Weather Service in Amarillo has issued a

* Severe Thunderstorm Warning for...
  Northeastern Hartley County in the Panhandle of Texas...

* Until 1045 PM CDT.

* At 953 PM CDT, a severe thunderstorm was located 6 miles west of
  Hartley, or 10 miles south of Dalhart, 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...
  Hartley.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3582 10259 3598 10259 3604 10222 3576 10220
TIME...MOT...LOC 0253Z 253DEG 14KT 3591 10251 

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

$$

Ward
2 follow-up statements
824 
WWUS54 KAMA 080311
SVSAMA

Severe Weather Statement
National Weather Service Amarillo TX
1011 PM CDT Sat Aug 7 2021

TXC205-080345-
/O.CON.KAMA.SV.W.0243.000000T0000Z-210808T0345Z/
Hartley TX-
1011 PM CDT Sat Aug 7 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1045 PM CDT
FOR NORTHEASTERN HARTLEY COUNTY...

At 1011 PM CDT, a severe thunderstorm was located 12 miles east of
Hartley, or 13 miles northwest of Dumas, moving east at 40 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...
Hartley.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3583 10248 3599 10249 3604 10222 3576 10220
TIME...MOT...LOC 0311Z 259DEG 35KT 3595 10219 

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

$$

Ward
504 
WWUS54 KAMA 080319
SVSAMA

Severe Weather Statement
National Weather Service Amarillo TX
1019 PM CDT Sat Aug 7 2021

TXC205-080329-
/O.CAN.KAMA.SV.W.0243.000000T0000Z-210808T0345Z/
Hartley TX-
1019 PM CDT Sat Aug 7 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN HARTLEY 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 small hail, gusty
winds and heavy rain are still possible with this thunderstorm.

LAT...LON 3583 10248 3599 10249 3604 10222 3576 10220
TIME...MOT...LOC 0315Z 253DEG 14KT 3596 10215 

$$

Ward

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 7, 7:04 PM CDTSevere Thunderstorm WarningAMAPotter, Randall56 min
Aug 7, 7:16 PM CDTSevere Thunderstorm WarningAMADallam, Hartley, Moore, Sherman44 min
Aug 7, 7:31 PM CDTSevere Thunderstorm WarningAMAArmstrong, Carson33 min
Aug 7, 7:46 PM CDTSpecial Weather StatementAMAHansford, Sherman29 min
Aug 7, 8:00 PM CDTSevere Thunderstorm WarningAMAHansford, Lipscomb, Ochiltree, Sherman60 min
Aug 7, 8:02 PM CDTSpecial Weather StatementAMAMoore28 min
Aug 7, 8:57 PM CDTSpecial Weather StatementAMAOchiltree63 min
Aug 7, 9:50 PM CDTSpecial Weather StatementAMAHutchinson55 min
Aug 7, 10:09 PM CDTSpecial Weather StatementAMALipscomb36 min
Aug 7, 10:22 PM CDTSpecial Weather StatementAMAMoore38 min
Aug 7, 10:42 PM CDTSpecial Weather StatementAMAGray63 min
Aug 7, 10:46 PM CDTSevere Thunderstorm Warning Considerable damage threatAMACarson, Gray, Hutchinson, Roberts59 min
Aug 7, 11:24 PM CDTSpecial Weather StatementAMAHansford, Hutchinson36 min
Aug 7, 11:42 PM CDTSpecial Weather StatementAMAGray33 min
Aug 8, 12:06 AM CDTSpecial Weather StatementAMACarson, Roberts24 min
Aug 8, 12:29 AM CDTSpecial Weather StatementAMAHemphill46 min
Aug 8, 12:51 AM CDTSpecial Weather StatementAMAGray24 min

Nearby

Severe Thunderstorm Warnings in Texas, 2021Every 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.