Alert archive / Texas / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 57, NWS Amarillo, TX

May 15, 20214 counties in Texas

NWS Amarillo, TX issued this severe thunderstorm warning at May 15, 2021, 9:32 PM CDT for 4 counties in Texas. It was in force for 28 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: May 15, 2021, 9:32 PM CDT (02:32 UTC)
Expired: May 15, 2021, 10:00 PM CDT
In force: 28 min
Issued by: NWS Amarillo, TX
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Deaf Smith County, TX, Oldham County, TX, Potter County, TX, Randall County, TX

The radar

The Amarillo radar (KAMA), 33 km from the middle of the area, began a volume at 02:32 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
May 15, 3:49 PM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Amarillo Airport, TX (KAMA), launched 00:00Z, 2.5 hours before the alert went out and 34 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: 826 J/kg
Mixed-layer CIN: -86 J/kg
Mixed-layer LCL: 1913 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: 33 m²/s²
0-3 km storm-relative helicity: 161 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 3.0

Open this sounding in Storm Lab

The text

As transmitted.

451 
WUUS54 KAMA 160232
SVRAMA
TXC117-359-375-381-160300-
/O.NEW.KAMA.SV.W.0057.210516T0232Z-210516T0300Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Amarillo TX
932 PM CDT Sat May 15 2021

The National Weather Service in Amarillo has issued a

* Severe Thunderstorm Warning for...
  Northwestern Randall County in the Panhandle of Texas...
  Southeastern Oldham County in the Panhandle of Texas...
  Northeastern Deaf Smith County in the Panhandle of Texas...
  Southern Potter County in the Panhandle of Texas...

* Until 1000 PM CDT.

* At 931 PM CDT, a severe thunderstorm was located over Bushland, or
  12 miles west of Amarillo, moving northeast at 30 mph.

  HAZARD...60 mph wind gusts and quarter size hail.

  SOURCE...Radar indicated.

  IMPACT...Minor damage to roofs, siding, and trees is possible. 
           Hail damage to vehicles is expected.

* Locations impacted include...
  Amarillo, Umbarger, Bushland and Valley De Oro. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3491 10208 3497 10231 3551 10211 3541 10171
TIME...MOT...LOC 0231Z 215DEG 25KT 3523 10207 

HAIL...1.00IN
WIND...60MPH
 
$$

TLH

1 follow-up statement

076 
WWUS54 KAMA 160257
SVSAMA

Severe Weather Statement
National Weather Service Amarillo TX
957 PM CDT Sat May 15 2021

TXC117-359-375-381-160307-
/O.EXP.KAMA.SV.W.0057.000000T0000Z-210516T0300Z/
Randall TX-Oldham TX-Deaf Smith TX-Potter TX-
957 PM CDT Sat May 15 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN RANDALL...
SOUTHEASTERN OLDHAM...NORTHEASTERN DEAF SMITH AND SOUTHERN POTTER
COUNTIES WILL EXPIRE AT 1000 PM CDT...
                
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning will be allowed to expire.  However heavy rain
is still possible with this thunderstorm.

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

LAT...LON 3491 10208 3497 10231 3551 10211 3541 10171
TIME...MOT...LOC 0257Z 215DEG 25KT 3537 10195 

$$

TLH

The office that day

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

Issued	Product	Office	Counties	Lasted
May 15, 7:40 PM CDT	Severe Thunderstorm Warning	AMA	Dallam, Hartley	20 min
May 15, 9:09 PM CDT	Special Weather Statement	AMA	Sherman	36 min
May 15, 9:22 PM CDT	Severe Thunderstorm Warning	AMA	Moore, Sherman	23 min
May 15, 9:27 PM CDT	Special Weather Statement	AMA	Potter	33 min
May 15, 9:49 PM CDT	Severe Thunderstorm Warning	AMA	Hansford, Hutchinson, Moore, Sherman	16 min
May 15, 9:59 PM CDT	Severe Thunderstorm Warning	AMA	Hansford	28 min
May 15, 10:14 PM CDT	Special Weather Statement	AMA	Randall	31 min
May 15, 10:36 PM CDT	Special Weather Statement	AMA	Armstrong	24 min
May 15, 11:11 PM CDT	Special Weather Statement	AMA	Potter	64 min
May 15, 11:32 PM CDT	Special Weather Statement	AMA	Ochiltree	58 min
May 15, 11:47 PM CDT	Areal Flood Advisory	AMA	Potter, Randall	3 hr
May 16, 4:25 PM CDT	Special Weather Statement	AMA	Potter	35 min
May 16, 4:34 PM CDT	Severe Thunderstorm Warning	AMA	Moore, Potter	56 min
May 16, 4:37 PM CDT	Severe Thunderstorm Warning	AMA	Armstrong, Carson, Potter, Randall	68 min
May 16, 4:46 PM CDT	Severe Thunderstorm Warning	AMA	Potter, Randall	59 min
May 16, 5:22 PM CDT	Severe Thunderstorm Warning	AMA	Deaf Smith, Oldham	53 min
May 16, 5:45 PM CDT	Severe Thunderstorm Warning	AMA	Armstrong, Carson, Potter, Randall	60 min
May 16, 5:57 PM CDT	Severe Thunderstorm Warning	AMA	Carson, Moore, Potter	63 min
May 16, 6:12 PM CDT	Severe Thunderstorm Warning	AMA	Deaf Smith, Oldham	63 min
May 16, 6:33 PM CDT	Severe Thunderstorm Warning	AMA	Carson, Potter, Randall	44 min
May 16, 6:41 PM CDT	Severe Thunderstorm Warning	AMA	Armstrong, Randall	64 min
May 16, 6:48 PM CDT	Areal Flood Advisory	AMA	Deaf Smith, Randall	3 hr

Nearby

Severe Thunderstorm Warnings in Texas, 2021 Every severe thunderstorm warning 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.