Alert archive / Texas / Special Weather Statements in 2021

Special Weather Statement, NWS Amarillo, TX

July 15, 2021Oldham County, Texas

NWS Amarillo, TX issued this special weather statement at Jul 15, 2021, 4:09 PM CDT for Oldham County, Texas. It was in force for 21 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 15, 2021, 4:09 PM CDT (21:09 UTC)
Expired: Jul 15, 2021, 4:30 PM CDT
In force: 21 min
Issued by: NWS Amarillo, TX

County Oldham County, TX

The radar

The Cannon AFB radar (KFDX), 113 km from the middle of the area, began a volume at 21:10 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 nearest sounding before it

Amarillo Airport, TX (KAMA), launched 12:00Z, 9.2 hours before the alert went out and 119 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 131 J/kg
Mixed-layer CIN: -177 J/kg
Mixed-layer LCL: 1440 m above ground
0-6 km bulk shear: 16 kt
0-1 km storm-relative helicity: 57 m²/s²
0-3 km storm-relative helicity: 84 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement 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 special weather statement went out at Jul 15, 1:19 PM CDT, 2 hours 50 minutes earlier.

Area forecast discussion, Jul 15, 1:19 PM CDT, 2 hours 50 minutes before

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  <link rel="stylesheet" href="index.css">
</head>
<body>
  <main class="wrap">
    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
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        The site you requested is temporarily down for maintenance or an unexpected outage.
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Hazardous weather outlook, Jul 15, 1:38 PM CDT, 2 hours 31 minutes before

Hazardous Weather Outlook
National Weather Service Amarillo TX
138 PM CDT Thu Jul 15 2021

OKZ001>003-TXZ001>020-317-161200-
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-
138 PM CDT Thu Jul 15 2021

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

.DAY ONE...This Afternoon and Tonight.

Thunderstorms are possible through tonight across much of the
Oklahoma and Texas Panhandles. A storm or two may become strong
to severe through this evening across the eastern and southern
Texas Panhandle. Damaging winds will be the primary hazard,
although hail of a quarter size or less cannot be completely
ruled out.

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

Thunderstorms will be possible across much of the Oklahoma and
Texas Panhandles late Friday afternoon through Wednesday. Overall
the probability of severe thunderstorms is low at this time.
However, the strongest storms will be capable of producing locally
heavy rainfall, especially Saturday afternoon through Sunday
night, which may lead to localized flooding or flash flooding.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not anticipated at this time.

Schneider

In the hours before

Special weather statement, Jul 15, 4:09 PM CDT, 0 minutes before

Special Weather Statement
National Weather Service Amarillo TX
409 PM CDT Thu Jul 15 2021

TXZ011-152130-
Oldham TX-
409 PM CDT Thu Jul 15 2021

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN OLDHAM COUNTY UNTIL
430 PM CDT...

At 409 PM CDT, Doppler radar was tracking a strong thunderstorm 7
miles south of Nara Visa, moving southeast at 15 mph.

Penny size hail and wind gusts up to 50 mph will be possible with
this storm.

This storm will remain over mainly rural areas of northwestern Oldham
County.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take shelter in a sturdy building if threatening weather approaches.

&&

LAT...LON 3561 10304 3557 10279 3532 10292 3538 10304
TIME...MOT...LOC 2109Z 292DEG 12KT 3551 10305

DGW

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 14, 7:22 PM CDT	Special Weather Statement	AMA	Dallam, Hartley	23 min
Jul 14, 7:48 PM CDT	Special Weather Statement	AMA	Hartley	27 min
Jul 14, 9:02 PM CDT	Special Weather Statement	AMA	Oldham	28 min
Jul 14, 9:30 PM CDT	Special Weather Statement	AMA	Potter	30 min
Jul 15, 5:03 PM CDT	Special Weather Statement	AMA	Hartley	27 min
Jul 15, 5:21 PM CDT	Severe Thunderstorm Warning	AMA	Hartley, Oldham	54 min
Jul 15, 5:36 PM CDT	Areal Flood Advisory	AMA	Hartley	3 hr
Jul 15, 6:12 PM CDT	Special Weather Statement	AMA	Hartley	33 min
Jul 15, 6:39 PM CDT	Special Weather Statement	AMA	Moore	36 min

Nearby

Special Weather Statements in Texas, 2021 Every special weather statement 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.