Alert archive / Texas / Severe Thunderstorm Warnings in 2023

Severe Thunderstorm Warning 335, NWS Amarillo, TX

July 21, 2023Hansford County, Lipscomb County, Ochiltree County, Texas; Beaver County, Texas County, Oklahoma

NWS Amarillo, TX issued this severe thunderstorm warning at Jul 21, 2023, 1:07 AM CDT for Hansford County, Lipscomb County, Ochiltree County, Texas; Beaver County, Texas County, Oklahoma. It was in force for 40 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Jul 21, 2023, 1:07 AM CDT (06:07 UTC)
Expired
Jul 21, 2023, 1:47 AM CDT
In force
40 min
Issued by
NWS Amarillo, TX
Area
Storm-based polygon
Damage threat
Considerable
Hail
0.75 in
Wind
70.0 mph

Counties Beaver County, OK, Texas County, OK, Hansford County, TX, Lipscomb County, TX, Ochiltree County, TX

The radar

The Amarillo radar (KAMA), 156 km from the middle of the area, began a volume at 06:06 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 20, 11:53 PM CDTSevere Thunderstorm WatchSPC7 hr

The nearest sounding before it

Amarillo Airport, TX (KAMA), launched 00:00Z, 6.1 hours before the alert went out and 156 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 2023-07-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2250 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Amarillo Airport, TX at 00:00Z on 2023-07-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 19 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
2250 J/kg
Mixed-layer CIN
-14 J/kg
Mixed-layer LCL
1957 m above ground
0-6 km bulk shear
27 kt
0-1 km storm-relative helicity
19 m²/s²
0-3 km storm-relative helicity
202 m²/s²
Significant tornado parameter
0.0
Supercell composite
3.7

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Amarillo, TX wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 21, 12:55 AM CDT, 12 minutes earlier.

Area forecast discussion, Jul 21, 12:55 AM CDT, 12 minutes before
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Hazardous weather outlook, Jul 21, 12:02 AM CDT, 1 hour 5 minutes before
Hazardous Weather Outlook...UPDATED
National Weather Service Amarillo TX
1202 AM CDT Fri Jul 21 2023

OKZ001>003-TXZ001>020-317-211100-
Cimarron-Texas-Beaver-Dallam-Sherman-Hansford-Ochiltree-Lipscomb-
Hartley-Moore-Hutchinson-Roberts-Hemphill-Oldham-Potter-Carson-
Gray-Wheeler-Deaf Smith-Randall-Armstrong-Donley-Collingsworth-
Palo Duro Canyon-
1202 AM CDT Fri Jul 21 2023

This Hazardous Weather Outlook is for the Texas and Oklahoma
Panhandles.

.DAY ONE...Rest of Tonight.

Thunderstorms are expected through tonight across the Oklahoma
Panhandle and the northern two thirds of the Texas Panhandle.
Strong to severe thunderstorms will be possible with damaging
winds the primary threat, but large hail will be possible.
Although the threat is very low, a tornado can't be ruled out.
Flash flooding will also be possible. A Flood Watch is in effect
until 7 AM for the Oklahoma Panhandle and parts of the north
central and northeast Texas Panhandle. In addition, a Severe
Thunderstorm Watch is in effect for the Oklahoma Panhandle and all
of the northern Texas Panhandle until 7 AM CDT Friday.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

Thunderstorms will be possible Friday night and again Saturday
night.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed tonight.

In the hours before

Special weather statement, Jul 20, 11:27 PM CDT, 1 hour 40 minutes before
Special Weather Statement
National Weather Service Amarillo TX
1127 PM CDT Thu Jul 20 2023

OKZ002-210500-
Texas OK-
1127 PM CDT Thu Jul 20 2023

...A strong thunderstorm will impact portions of northwestern Texas
County through MIDNIGHT CDT...

At 1127 PM CDT, Doppler radar was tracking a strong thunderstorm 6
miles south of Elkhart, moving southeast at 30 mph.

HAZARD...Wind gusts of 50 to 55 mph and nickel size hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor damage to outdoor objects is
         possible.

Locations impacted include...
Eva and Hough.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

A Severe Thunderstorm Watch remains in effect until midnight CDT for
the Panhandle of Oklahoma.

&&

LAT...LON 3662 10167 3689 10203 3691 10203 3699 10196
      3700 10141
TIME...MOT...LOC 0427Z 306DEG 28KT 3691 10188

MAX HAIL SIZE...0.88 IN
MAX WIND GUST...55 MPH

Ward
Local storm report, Jul 21, 12:51 AM CDT, 16 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Jul 21, 12:33 AM CDTSevere Thunderstorm WarningAMAHansford72 min
Jul 21, 1:08 AM CDTAreal Flood AdvisoryAMALipscomb6 hr
Jul 21, 1:49 AM CDTSpecial Weather StatementAMALipscomb, Ochiltree56 min
Jul 21, 2:22 AM CDTSpecial Weather StatementAMAHemphill, Wheeler23 min
Jul 21, 3:40 AM CDTSpecial Weather StatementAMADallam35 min
Jul 20, 10:28 PM CDTSevere Thunderstorm Warning Considerable damage threatAMATexas45 min
Jul 20, 10:38 PM CDTSevere Thunderstorm Warning Considerable damage threatAMACimarron97 min
Jul 20, 10:45 PM CDTTornado WarningAMACimarron45 min
Jul 20, 11:11 PM CDTTornado WarningAMACimarron34 min
Jul 20, 11:16 PM CDTSevere Thunderstorm Warning Considerable damage threatAMACimarron, Texas89 min
Jul 20, 11:18 PM CDTAreal Flood AdvisoryAMACimarron, Texas9 hr
Jul 20, 11:27 PM CDTSpecial Weather StatementAMATexas33 min
Jul 20, 11:36 PM CDTSevere Thunderstorm WarningAMATexas54 min
Jul 20, 11:53 PM CDTTornado WarningAMATexas34 min
Jul 20, 11:57 PM CDTSevere Thunderstorm WarningAMABeaver, Texas63 min
Jul 21, 12:25 AM CDTSevere Thunderstorm Warning Considerable damage threatAMABeaver79 min
Jul 21, 12:50 AM CDTAreal Flood AdvisoryAMABeaver, Texas8 hr
Jul 21, 2:34 AM CDTSpecial Weather StatementAMACimarron56 min
Jul 21, 3:37 AM CDTAreal Flood AdvisoryAMACimarron, Texas5 hr
Jul 21, 6:08 PM CDTRiver Flood AdvisoryAMABeaver3 hr

Nearby

Severe Thunderstorm Warnings in Texas, 2023Severe Thunderstorm Warnings in Oklahoma, 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.