Alert archive / Texas / Special Weather Statements in 2021

Special Weather Statement, NWS Amarillo, TX

August 21, 2021Hemphill County, Texas

NWS Amarillo, TX issued this special weather statement at Aug 21, 2021, 6:18 PM CDT for Hemphill County, Texas. It was in force for 27 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: Aug 21, 2021, 6:18 PM CDT (23:18 UTC)
Expired: Aug 21, 2021, 6:45 PM CDT
In force: 27 min
Issued by: NWS Amarillo, TX
Hail: 0.88 in
Wind: 55

County Hemphill County, TX

The radar

The Amarillo radar (KAMA), 158 km from the middle of the area, began a volume at 23:19 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, 11.3 hours before the alert went out and 157 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: 611 J/kg
Mixed-layer CIN: -143 J/kg
Mixed-layer LCL: 1642 m above ground
0-6 km bulk shear: 9 kt
0-1 km storm-relative helicity: 16 m²/s²
0-3 km storm-relative helicity: 76 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 Aug 21, 6:12 PM CDT, 6 minutes earlier.

Area forecast discussion, Aug 21, 6:12 PM CDT, 6 minutes before

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Hazardous weather outlook, Aug 21, 1:14 PM CDT, 5 hours 4 minutes before

Hazardous Weather Outlook
National Weather Service Amarillo TX
114 PM CDT Sat Aug 21 2021

OKZ001>003-TXZ001>020-317-221100-
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-
114 PM CDT Sat Aug 21 2021

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

.DAY ONE...This Afternoon and Tonight.

Storms expected through tonight across much of the Texas and
Oklahoma Panhandles. Storms may be severe with hail and damaging
winds as the main threats.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not anticipated at this time.

Schneider

In the hours before

Local storm report, Aug 21, 5:08 PM CDT, 1 hour 10 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AMARILLO TX
508 PM CDT SAT AUG 21 2021

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0445 PM     HAIL             BOOKER                  36.46N 100.54W
08/21/2021  M1.75 INCH       LIPSCOMB           TX   PUBLIC

            PUBLIC REPORTS ON SOCIAL MEDIA QUARTER TO
            GOLF BALL SIZE HAIL.

&&

KR

Local storm report, Aug 21, 5:11 PM CDT, 1 hour 7 minutes before

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Local storm report, Aug 21, 5:17 PM CDT, 1 hour 1 minute before

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Local storm report, Aug 21, 5:34 PM CDT, 44 minutes before

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Local storm report, Aug 21, 6:07 PM CDT, 11 minutes before

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Special weather statement, Aug 21, 6:18 PM CDT, 0 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 21, 2:38 PM CDT	Special Weather Statement	AMA	Hemphill	67 min
Aug 21, 2:43 PM CDT	Special Weather Statement	AMA	Potter	62 min
Aug 21, 2:57 PM CDT	Severe Thunderstorm Warning	AMA	Hemphill, Lipscomb, Ochiltree, Roberts	93 min
Aug 21, 3:32 PM CDT	Severe Thunderstorm Warning	AMA	Carson, Hutchinson, Moore, Potter	88 min
Aug 21, 3:42 PM CDT	Areal Flood Advisory	AMA	Hemphill	3 hr
Aug 21, 3:42 PM CDT	Severe Thunderstorm Warning	AMA	Armstrong, Carson, Potter, Randall	69 min
Aug 21, 3:54 PM CDT	Areal Flood Advisory	AMA	Potter, Randall	10 min
Aug 21, 4:04 PM CDT	Flash Flood Warning	AMA	Potter, Randall	90 min
Aug 21, 4:15 PM CDT	Severe Thunderstorm Warning	AMA	Lipscomb, Ochiltree	90 min
Aug 21, 4:33 PM CDT	Severe Thunderstorm Warning	AMA	Hansford, Hutchinson, Ochiltree, Roberts	70 min
Aug 21, 4:44 PM CDT	Special Weather Statement	AMA	Sherman	61 min
Aug 21, 5:14 PM CDT	Severe Thunderstorm Warning	AMA	Armstrong, Carson, Potter, Randall	91 min
Aug 21, 5:20 PM CDT	Severe Thunderstorm Warning	AMA	Hansford, Ochiltree, Sherman	85 min
Aug 21, 6:18 PM CDT	Areal Flood Advisory	AMA	Armstrong, Randall	85 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.