Alert archive / Texas / Severe Thunderstorm Warnings in 2020

Severe Thunderstorm Warning 187, NWS Amarillo, TX

August 10, 2020Deaf Smith County, Randall County, Texas

NWS Amarillo, TX issued this severe thunderstorm warning at Aug 10, 2020, 7:49 PM CDT for Deaf Smith County, Randall County, Texas. It was in force for 56 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: Aug 10, 2020, 7:49 PM CDT (00:49 UTC)
Expired: Aug 10, 2020, 8:45 PM CDT
In force: 56 min
Issued by: NWS Amarillo, TX
Area: Storm-based polygon
Hail: 1.25 in
Wind: 60.0 mph

Counties Deaf Smith County, TX, Randall County, TX

The radar

The Amarillo radar (KAMA), 58 km from the middle of the area, began a volume at 00:50 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, 0.8 hours before the alert went out and 58 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: 991 J/kg
Mixed-layer CIN: -7 J/kg
Mixed-layer LCL: 2938 m above ground
0-6 km bulk shear: 44 kt
0-1 km storm-relative helicity: 43 m²/s²
0-3 km storm-relative helicity: 129 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 3.2

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 Aug 10, 6:36 PM CDT, 1 hour 13 minutes earlier.

Area forecast discussion, Aug 10, 6:36 PM CDT, 1 hour 13 minutes before

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Hazardous weather outlook, Aug 10, 1:52 PM CDT, 5 hours 57 minutes before

Hazardous Weather Outlook
National Weather Service Amarillo TX
152 PM CDT Mon Aug 10 2020

OKZ001>003-TXZ001>020-317-110900-
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-
152 PM CDT Mon Aug 10 2

In the hours before

Special weather statement, Aug 10, 6:43 PM CDT, 1 hour 6 minutes before

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Special weather statement, Aug 10, 6:48 PM CDT, 1 hour 1 minute before

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Special weather statement, Aug 10, 7:01 PM CDT, 48 minutes before

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Special weather statement, Aug 10, 7:18 PM CDT, 31 minutes before

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Special weather statement, Aug 10, 7:26 PM CDT, 23 minutes before

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Special weather statement, Aug 10, 7:41 PM CDT, 8 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 10, 7:18 PM CDT	Special Weather Statement	AMA	Hutchinson, Roberts	27 min
Aug 10, 7:26 PM CDT	Special Weather Statement	AMA	Deaf Smith	34 min
Aug 10, 7:41 PM CDT	Special Weather Statement	AMA	Carson, Gray, Hemphill, Potter	64 min
Aug 10, 7:45 PM CDT	Severe Thunderstorm Warning	AMA	Carson, Gray, Hemphill, Potter, Roberts, Wheeler	60 min
Aug 10, 8:37 PM CDT	Severe Thunderstorm Warning	AMA	Collingsworth, Donley, Gray, Wheeler	53 min
Aug 10, 8:41 PM CDT	Severe Thunderstorm Warning	AMA	Deaf Smith, Randall	64 min
Aug 10, 8:47 PM CDT	Special Weather Statement	AMA	Roberts	28 min
Aug 10, 9:27 PM CDT	Special Weather Statement	AMA	Randall	18 min
Aug 10, 9:30 PM CDT	Special Weather Statement	AMA	Gray	30 min
Aug 10, 9:53 PM CDT	Special Weather Statement	AMA	Randall	37 min
Aug 10, 10:22 PM CDT	Special Weather Statement	AMA	Wheeler	23 min
Aug 10, 10:29 PM CDT	Special Weather Statement	AMA	Randall	31 min
Aug 10, 10:44 PM CDT	Special Weather Statement	AMA	Collingsworth, Wheeler	46 min
Aug 10, 10:58 PM CDT	Special Weather Statement	AMA	Randall	32 min
Aug 11, 6:46 PM CDT	Severe Thunderstorm Warning	AMA	Carson, Hutchinson, Moore, Potter	59 min
Aug 10, 7:01 PM CDT	Special Weather Statement	AMA	Beaver	29 min

Nearby

Severe Thunderstorm Warnings in Texas, 2020 Every severe thunderstorm warning in 2020

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.