Alert archive / Texas / Severe Thunderstorm Warnings in 2020

Severe Thunderstorm Warning 167, NWS Amarillo, TX

July 29, 20204 counties in Texas

NWS Amarillo, TX issued this severe thunderstorm warning at Jul 29, 2020, 2:14 AM CDT for 4 counties in Texas. It was in force for 45 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: Jul 29, 2020, 2:14 AM CDT (07:14 UTC)
Expired: Jul 29, 2020, 2:59 AM CDT
In force: 45 min
Issued by: NWS Amarillo, TX
Area: Storm-based polygon
Hail: 1.75 in
Wind: 60.0 mph

Counties Hansford County, TX, Hutchinson County, TX, Moore County, TX, Sherman County, TX

The radar

The Amarillo radar (KAMA), 92 km from the middle of the area, began a volume at 07:14 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, 7.2 hours before the alert went out and 92 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: 283 J/kg
Mixed-layer CIN: -18 J/kg
Mixed-layer LCL: 1813 m above ground
0-6 km bulk shear: 14 kt
0-1 km storm-relative helicity: 12 m²/s²
0-3 km storm-relative helicity: 71 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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 Jul 29, 12:36 AM CDT, 1 hour 38 minutes earlier.

Area forecast discussion, Jul 29, 12:36 AM CDT, 1 hour 38 minutes before

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Hazardous weather outlook, Jul 28, 3:27 PM CDT, 10 hours 47 minutes before

Hazardous Weather Outlook
National Weather Service Amarillo TX
327 PM CDT Tue Jul 28 2020

OKZ001>003-TXZ001>020-317-291200-
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-
327 PM CDT Tue Jul 28 2020

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

.DAY ONE...Tonight.

Scattered thunderstorms are expected this evening. Heavy rain and
gusty winds will be possible with the strongest storms.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

Thunderstorms will be possible across parts of the Panhandles
Wednesday through Sunday. The strongest thunderstorms that do
occur Thursday afternoon into early Friday morning are capable of
being strong to possibly severe, while the severe threat remains
low on Wednesday and Saturday through Monday.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not anticipated at this time.

In the hours before

Special weather statement, Jul 28, 9:46 PM CDT, 4 hours 28 minutes before

Special Weather Statement
National Weather Service Amarillo TX
946 PM CDT Tue Jul 28 2020

TXZ011-290315-
Oldham TX-
946 PM CDT Tue Jul 28 2020

...SIGNIFICANT WEATHER ADVISORY FOR WESTERN OLDHAM COUNTY UNTIL 1015
PM CDT...

At 946 PM CDT, Doppler radar was tracking a strong thunderstorm 9
miles southeast of Nara Visa, moving southeast at 25 mph.

Wind gusts of 50 to 55 mph will be possible with this storm.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take shelter in a sturdy building if threatening weather approaches.

&&

LAT...LON 3556 10304 3562 10295 3563 10234 3537 10253
      3518 10290 3518 10304
TIME...MOT...LOC 0246Z 321DEG 22KT 3554 10295

LFM

Special weather statement, Jul 28, 10:13 PM CDT, 4 hours 1 minute before

Special Weather Statement
National Weather Service Amarillo TX
1013 PM CDT Tue Jul 28 2020

TXZ011-290345-
Oldham TX-
1013 PM CDT Tue Jul 28 2020

...SIGNIFICANT WEATHER ADVISORY FOR OLDHAM COUNTY UNTIL 1045 PM
CDT...

At 1013 PM CDT, Doppler radar was tracking a strong thunderstorm 16
miles southeast of Nara Visa, moving southeast at 20 mph.

Penny size hail and wind gusts of 50 to 55 mph will be possible with
this storm.

Locations impacted include...
Adrian.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take shelter in a sturdy building if threatening weather approaches.

&&

LAT...LON 3548 10304 3562 10292 3562 10286 3556 10233
      3519 10269 3519 10279 3532 10304
TIME...MOT...LOC 0313Z 309DEG 20KT 3549 10286

LFM

Special weather statement, Jul 29, 12:11 AM CDT, 2 hours 3 minutes before

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Special weather statement, Jul 29, 12:50 AM CDT, 1 hour 24 minutes before

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Special weather statement, Jul 29, 1:26 AM CDT, 48 minutes before

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Special weather statement, Jul 29, 2:06 AM 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
Jul 28, 8:09 PM CDT	Special Weather Statement	AMA	Hartley	36 min
Jul 28, 9:31 PM CDT	Special Weather Statement	AMA	Randall	14 min
Jul 28, 9:46 PM CDT	Special Weather Statement	AMA	Oldham	29 min
Jul 28, 10:13 PM CDT	Special Weather Statement	AMA	Oldham	32 min
Jul 28, 10:32 PM CDT	Severe Thunderstorm Warning	AMA	Oldham	30 min
Jul 29, 12:11 AM CDT	Special Weather Statement	AMA	Dallam	49 min
Jul 29, 12:50 AM CDT	Special Weather Statement	AMA	Dallam, Hartley	40 min
Jul 29, 1:26 AM CDT	Special Weather Statement	AMA	Moore	49 min
Jul 29, 2:06 AM CDT	Special Weather Statement	AMA	Moore	39 min
Jul 29, 3:43 AM CDT	Special Weather Statement	AMA	Texas	47 min
Jul 29, 3:22 PM CDT	Special Weather Statement	AMA	Cimarron	23 min
Jul 29, 4:29 PM CDT	Special Weather Statement	AMA	Cimarron	31 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.