Alert archive / Texas / Severe Thunderstorm Warnings in 2023

Severe Thunderstorm Warning 142, NWS Amarillo, TX

June 11, 2023Deaf Smith County, Oldham County, Texas

NWS Amarillo, TX issued this severe thunderstorm warning at Jun 11, 2023, 6:56 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
Jun 11, 2023, 6:56 PM CDT (23:56 UTC)
Expired
Jun 11, 2023, 8:00 PM CDT
In force
64 min
Issued by
NWS Amarillo, TX
Area
Storm-based polygon
Hail
1.25 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 23:59 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
Jun 11, 3:18 PM CDTSevere Thunderstorm WatchSPC7 hr

The nearest sounding before it

Amarillo Airport, TX (KAMA), launched 12:00Z, 11.9 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 2023-06-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 481 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 2023-06-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 44 square meters per square second.19395878Sfc1 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
481 J/kg
Mixed-layer CIN
-233 J/kg
Mixed-layer LCL
1173 m above ground
0-6 km bulk shear
45 kt
0-1 km storm-relative helicity
44 m²/s²
0-3 km storm-relative helicity
254 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.9

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 Jun 11, 5:28 PM CDT, 1 hour 28 minutes earlier.

Area forecast discussion, Jun 11, 5:28 PM CDT, 1 hour 28 minutes before
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Hazardous weather outlook, Jun 11, 5:37 PM CDT, 1 hour 19 minutes before
Hazardous Weather Outlook
National Weather Service Amarillo TX
537 PM CDT Sun Jun 11 2023

OKZ001>003-TXZ001>020-317-121045-
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-
537 PM CDT Sun Jun 11 2023

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

.DAY ONE...Tonight.

Thunderstorms will be possible across the Oklahoma and Texas
Panhandles through tonight. A few storms may become strong to
severe, with large hail and damaging winds the primary hazards.
A Severe Thunderstorm Watch is in effect for the western Oklahoma
Panhandle and the western Texas Panhandle until 10 PM CDT this
evening. Also, any storms that develop will be capable of
producing heavy rainfall, which may lead to flooding or flash
flooding.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

Additional thunderstorms will be possible across mainly northern
and eastern sections of the area Monday through Tuesday afternoon,
and then again Friday evening. The probability of severe thunderstorms
is low at this time. However, any storms that develop during this
time period will be capable of producing heavy rainfall, which may
lead to flooding or flash flooding.

.SPOTTER INFORMATION STATEMENT...

Limited spotter activation may be needed late this afternoon or
evening.

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 10, 7:15 PM CDTAreal Flood AdvisoryAMADallam3 hr
Jun 10, 7:28 PM CDTSpecial Weather StatementAMADallam47 min
Jun 10, 7:45 PM CDTSevere Thunderstorm Warning Considerable damage threatAMADallam, Hartley60 min
Jun 10, 8:39 PM CDTSevere Thunderstorm Warning Considerable damage threatAMAHartley48 min
Jun 11, 6:20 PM CDTSevere Thunderstorm WarningAMADeaf Smith55 min
Jun 11, 1:30 AM CDTSpecial Weather StatementAMABeaver60 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.