Alert archive / Texas / Special Weather Statements in 2021

Special Weather Statement, NWS Amarillo, TX

August 7, 2021Moore County, Texas

NWS Amarillo, TX issued this special weather statement at Aug 7, 2021, 10:22 PM CDT for Moore County, Texas. It was in force for 38 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 7, 2021, 10:22 PM CDT (03:22 UTC)
Expired: Aug 7, 2021, 11:00 PM CDT
In force: 38 min
Issued by: NWS Amarillo, TX
Hail: 0.88 in
Wind: 55

County Moore County, TX

The radar

The Amarillo radar (KAMA), 87 km from the middle of the area, began a volume at 03:23 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 00:00Z, 3.4 hours before the alert went out and 87 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: 2016 J/kg
Mixed-layer CIN: -122 J/kg
Mixed-layer LCL: 2104 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: 36 m²/s²
0-3 km storm-relative helicity: 133 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.1

Open this sounding in Storm Lab

The text

As transmitted.

337 
WWUS84 KAMA 080322
SPSAMA

Special Weather Statement
National Weather Service Amarillo TX
1022 PM CDT Sat Aug 7 2021
 
TXZ002-003-007-008-080400-
Hutchinson TX-Sherman TX-Hansford TX-Moore TX-
1022 PM CDT Sat Aug 7 2021

...A strong thunderstorm will impact portions of northwestern
Hutchinson, southwestern Hansford, southern Sherman and northern
Moore Counties through 1100 PM CDT...

At 1022 PM CDT, Doppler radar was tracking a strong thunderstorm 4 
miles south of Cactus, or 8 miles north of Dumas, moving east at 40 
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...
Dumas, Cactus and Sunray. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building. 

A Severe Thunderstorm Watch remains in effect until 1100 PM CDT for
the Panhandle of Texas.

&&

LAT...LON 3607 10216 3620 10153 3583 10146 3583 10216
TIME...MOT...LOC 0322Z 259DEG 39KT 3599 10202 

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

$$

Ward

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 7, 7:04 PM CDT	Severe Thunderstorm Warning	AMA	Potter, Randall	56 min
Aug 7, 7:16 PM CDT	Severe Thunderstorm Warning	AMA	Dallam, Hartley, Moore, Sherman	44 min
Aug 7, 7:31 PM CDT	Severe Thunderstorm Warning	AMA	Armstrong, Carson	33 min
Aug 7, 7:46 PM CDT	Special Weather Statement	AMA	Hansford, Sherman	29 min
Aug 7, 8:00 PM CDT	Severe Thunderstorm Warning	AMA	Hansford, Lipscomb, Ochiltree, Sherman	60 min
Aug 7, 8:02 PM CDT	Special Weather Statement	AMA	Moore	28 min
Aug 7, 8:57 PM CDT	Special Weather Statement	AMA	Ochiltree	63 min
Aug 7, 9:50 PM CDT	Special Weather Statement	AMA	Hutchinson	55 min
Aug 7, 9:53 PM CDT	Severe Thunderstorm Warning	AMA	Hartley	26 min
Aug 7, 10:09 PM CDT	Special Weather Statement	AMA	Lipscomb	36 min
Aug 7, 10:42 PM CDT	Special Weather Statement	AMA	Gray	63 min
Aug 7, 10:46 PM CDT	Severe Thunderstorm Warning Considerable damage threat	AMA	Carson, Gray, Hutchinson, Roberts	59 min
Aug 7, 11:24 PM CDT	Special Weather Statement	AMA	Hansford, Hutchinson	36 min
Aug 7, 11:42 PM CDT	Special Weather Statement	AMA	Gray	33 min
Aug 8, 12:06 AM CDT	Special Weather Statement	AMA	Carson, Roberts	24 min
Aug 8, 12:29 AM CDT	Special Weather Statement	AMA	Hemphill	46 min
Aug 8, 12:51 AM CDT	Special Weather Statement	AMA	Gray	24 min
Aug 7, 7:14 PM CDT	Special Weather Statement	AMA	Texas	31 min
Aug 7, 8:35 PM CDT	Special Weather Statement	AMA	Beaver	25 min
Aug 7, 9:38 PM CDT	Areal Flood Advisory	AMA	Texas	3 hr
Aug 7, 9:58 PM CDT	Special Weather Statement	AMA	Texas	32 min
Aug 7, 11:18 PM CDT	Special Weather Statement	AMA	Beaver	27 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.