Alert archive / Texas / Severe Thunderstorm Warnings in 2023

Severe Thunderstorm Warning 310, NWS Amarillo, TX

July 13, 2023Dallam County, Hartley County, Texas

NWS Amarillo, TX issued this severe thunderstorm warning at Jul 13, 2023, 9:27 PM CDT for Dallam County, Hartley County, Texas. It was in force for 63 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 13, 2023, 9:27 PM CDT (02:27 UTC)
Expired
Jul 13, 2023, 10:30 PM CDT
In force
63 min
Issued by
NWS Amarillo, TX
Area
Storm-based polygon
Tornado
Possible
Damage threat
Considerable
Hail
1.75 in
Wind
60.0 mph

Counties Dallam County, TX, Hartley County, TX

The radar

The Amarillo radar (KAMA), 151 km from the middle of the area, began a volume at 02:28 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
Jul 13, 3:17 PM CDTSevere Thunderstorm WatchSPC10 hr

The nearest sounding before it

Amarillo Airport, TX (KAMA), launched 00:00Z, 2.5 hours before the alert went out and 152 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 2023-07-14Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2015 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 2023-07-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -138 square meters per square second.1939Sfc1 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
2015 J/kg
Mixed-layer CIN
-115 J/kg
Mixed-layer LCL
1413 m above ground
0-6 km bulk shear
33 kt
0-1 km storm-relative helicity
-138 m²/s²
0-3 km storm-relative helicity
-93 m²/s²
Significant tornado parameter
0.0
Supercell composite
-3.8

Open this sounding in Storm Lab

The text

As transmitted.

294 
WUUS54 KAMA 140227
SVRAMA
TXC111-205-140330-
/O.NEW.KAMA.SV.W.0310.230714T0227Z-230714T0330Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Amarillo TX
927 PM CDT Thu Jul 13 2023

The National Weather Service in Amarillo has issued a

* Severe Thunderstorm Warning for...
  Southwestern Dallam County in the Panhandle of Texas...
  Northwestern Hartley County in the Panhandle of Texas...

* Until 1030 PM CDT.

* At 926 PM CDT, a severe thunderstorm was located 8 miles northeast
  of Sedan, or 18 miles southeast of Clayton, moving south at 20 mph.

  HAZARD...Golf 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.

* This severe thunderstorm will remain over mainly rural areas of
  southwestern Dallam and northwestern Hartley Counties.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

This thunderstorm is capable of producing all types of severe weather
including extremely large hail, destructive straight line winds and
tornadoes. Move quickly to a safe shelter such as an interior room, a
bathroom, closet or basement.

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

&&

LAT...LON 3627 10304 3628 10291 3593 10276 3592 10304
TIME...MOT...LOC 0226Z 358DEG 19KT 3622 10301 

TORNADO...POSSIBLE
THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

Ward
2 follow-up statements
808 
WWUS54 KAMA 140258
SVSAMA

Severe Weather Statement
National Weather Service Amarillo TX
958 PM CDT Thu Jul 13 2023

TXC111-205-140330-
/O.CON.KAMA.SV.W.0310.000000T0000Z-230714T0330Z/
Dallam TX-Hartley TX-
958 PM CDT Thu Jul 13 2023

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1030 PM CDT
FOR SOUTHWESTERN DALLAM AND NORTHWESTERN HARTLEY COUNTIES...

At 957 PM CDT, a severe thunderstorm was located 7 miles east of
Sedan, or 15 miles northeast of Amistad, moving south 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.

This severe thunderstorm will remain over mainly rural areas of
southwestern Dallam and northwestern Hartley Counties.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

This thunderstorm is capable of producing all types of severe weather
including extremely large hail, destructive straight line winds and
tornadoes. Move quickly to a safe shelter, such as an interior room,
a bathroom or closet or basement.

&&

LAT...LON 3627 10304 3628 10291 3593 10276 3592 10304
TIME...MOT...LOC 0257Z 359DEG 14KT 3611 10301 

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

$$

LFM
089 
WWUS54 KAMA 140327
SVSAMA

Severe Weather Statement
National Weather Service Amarillo TX
1027 PM CDT Thu Jul 13 2023

TXC111-205-140337-
/O.EXP.KAMA.SV.W.0310.000000T0000Z-230714T0330Z/
Dallam TX-Hartley TX-
1027 PM CDT Thu Jul 13 2023

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN DALLAM AND
NORTHWESTERN HARTLEY COUNTIES WILL EXPIRE AT 1030 PM CDT...
        
The storm which prompted the warning has moved out of the area.
Therefore, the warning will be allowed to expire.

A Severe Thunderstorm Watch remains in effect until 1100 PM CDT for
the Panhandle of Texas.

LAT...LON 3627 10304 3628 10291 3593 10276 3592 10304
TIME...MOT...LOC 0327Z 358DEG 19KT 3597 10300 

$$

LFM

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 13, 7:12 PM CDTSevere Thunderstorm WarningAMAArmstrong, Donley46 min
Jul 13, 7:30 PM CDTSpecial Weather StatementAMAGray30 min
Jul 13, 7:56 PM CDTSpecial Weather StatementAMAGray34 min
Jul 13, 8:04 PM CDTSevere Thunderstorm WarningAMADallam56 min
Jul 13, 8:45 PM CDTTornado WarningAMADallam45 min
Jul 13, 9:40 PM CDTSevere Thunderstorm Warning Destructive damage threatAMADallam, Sherman65 min
Jul 13, 9:43 PM CDTSpecial Weather StatementAMAArmstrong32 min
Jul 13, 10:26 PM CDTSevere Thunderstorm Warning Considerable damage threatAMAHartley41 min
Jul 13, 10:28 PM CDTSpecial Weather StatementAMADonley32 min
Jul 13, 10:39 PM CDTSevere Thunderstorm Warning Considerable damage threatAMADallam, Sherman37 min
Jul 13, 10:45 PM CDTSevere Thunderstorm WarningAMACollingsworth, Donley60 min
Jul 13, 11:15 PM CDTSpecial Weather StatementAMACarson30 min
Jul 13, 11:29 PM CDTSevere Thunderstorm WarningAMACarson45 min
Jul 14, 12:51 AM CDTSpecial Weather StatementAMADallam24 min
Jul 14, 12:58 AM CDTSevere Thunderstorm WarningAMADallam62 min
Jul 14, 1:20 AM CDTFlash Flood WarningAMADallam115 min
Jul 14, 1:25 AM CDTSevere Thunderstorm Warning Considerable damage threatAMADallam, Hartley, Sherman65 min
Jul 14, 2:20 AM CDTSevere Thunderstorm WarningAMADallam, Hansford, Hartley, Hutchinson, Moore, Sherman40 min
Jul 14, 2:56 AM CDTSpecial Weather StatementAMACarson, Hutchinson, Potter49 min
Jul 14, 3:43 AM CDTSpecial Weather StatementAMACarson, Gray, Ochiltree, Roberts47 min
Jul 14, 3:45 AM CDTSevere Thunderstorm WarningAMACarson, Gray, Hutchinson, Roberts45 min
Jul 14, 4:00 AM CDTSevere Thunderstorm WarningAMAOchiltree28 min
Jul 14, 4:27 AM CDTSpecial Weather StatementAMAHemphill, Lipscomb63 min

Nearby

Severe Thunderstorm Warnings in Texas, 2023Every severe thunderstorm warning in 2023

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.