Alert archive / Texas / Severe Thunderstorm Warnings in 2023

Severe Thunderstorm Warning 304, NWS Amarillo, TX

July 13, 2023Deaf Smith County, Oldham County, Texas

NWS Amarillo, TX issued this severe thunderstorm warning at Jul 13, 2023, 3:41 PM CDT for Deaf Smith County, Oldham County, Texas. It was in force for 64 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 13, 2023, 3:41 PM CDT (20:41 UTC)
Expired
Jul 13, 2023, 4:45 PM CDT
In force
64 min
Issued by
NWS Amarillo, TX
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Deaf Smith County, TX, Oldham County, TX

The radar

The Amarillo radar (KAMA), 81 km from the middle of the area, began a volume at 20:42 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 12:00Z, 8.7 hours before the alert went out and 82 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 12:00Z on 2023-07-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2543 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 12:00Z on 2023-07-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 14 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
2543 J/kg
Mixed-layer CIN
-187 J/kg
Mixed-layer LCL
1679 m above ground
0-6 km bulk shear
10 kt
0-1 km storm-relative helicity
14 m²/s²
0-3 km storm-relative helicity
13 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

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 13, 2:11 PM CDT, 1 hour 30 minutes earlier.

Area forecast discussion, Jul 13, 2:11 PM CDT, 1 hour 30 minutes before
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Hazardous weather outlook, Jul 13, 3:21 PM CDT, 20 minutes before
Hazardous Weather Outlook...UPDATED
National Weather Service Amarillo TX
321 PM CDT Thu Jul 13 2023

OKZ001>003-TXZ001>020-317-140830-
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-
321 PM CDT Thu Jul 13 2023

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

.DAY ONE...Tonight.

A Heat Advisory is in effect for this afternoon across portions of
the central and eastern Texas Panhandle due to heat index values
of 105 to 110 degrees expected. An Excessive Heat Warning is in
effect for Palo Duro Canyon State Park as temperatures and heat
index values could exceed 110 degrees on the canyon floor today.

Thunderstorms will be possible across the Panhandles through
tonight. Some storms could be severe with large hail, damaging
winds and flash flooding all possible. A tornado is also possible.

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

Thunderstorms are possible Friday through Sunday. Thunderstorms
may have the chance to become severe with large hail, damaging
winds, and flash flooding being the main threats.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed this afternoon and tonight.

In the hours before

Special weather statement, Jul 13, 3:01 PM CDT, 40 minutes before
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Special weather statement, Jul 13, 3:24 PM CDT, 17 minutes before
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      <div class="status" id="status">Temporary Notice</div>
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        The site you requested is temporarily down for maintenance or an unexpected outage.
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The office that day

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

IssuedProductOfficeCountiesLasted
Jul 13, 2:59 AM CDTExcessive Heat WarningAMARandall16 hr
Jul 13, 2:59 AM CDTHeat AdvisoryAMACollingsworth, Donley, Gray, Hemphill, Hutchinson, Roberts and 1 more16 hr
Jul 13, 3:01 PM CDTSpecial Weather StatementAMAOldham29 min
Jul 13, 3:24 PM CDTSpecial Weather StatementAMAOldham36 min
Jul 13, 4:15 PM CDTAreal Flood AdvisoryAMADeaf Smith, Oldham, Potter6 hr
Jul 13, 4:30 PM CDTSevere Thunderstorm Warning Considerable damage threatAMADeaf Smith56 min
Jul 13, 4:51 PM CDTAreal Flood AdvisoryAMADeaf Smith5 hr
Jul 13, 4:57 PM CDTSpecial Weather StatementAMACarson33 min
Jul 13, 5:04 PM CDTFlash Flood WarningAMADeaf Smith5 hr
Jul 13, 5:07 PM CDTSpecial Weather StatementAMARandall23 min
Jul 13, 5:26 PM CDTSpecial Weather StatementAMARandall34 min
Jul 13, 5:30 PM CDTSpecial Weather StatementAMAOldham30 min
Jul 13, 5:31 PM CDTSpecial Weather StatementAMARandall29 min
Jul 13, 5:43 PM CDTSpecial Weather StatementAMAArmstrong32 min
Jul 13, 5:49 PM CDTSpecial Weather StatementAMARandall26 min
Jul 13, 6:02 PM CDTSpecial Weather StatementAMAOldham28 min
Jul 13, 6:12 PM CDTSpecial Weather StatementAMAArmstrong33 min
Jul 13, 6:26 PM CDTTornado WarningAMACimarron49 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.