Alert archive / Texas / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 48, NWS Amarillo, TX

May 14, 2021Dallam County, Hartley County, Sherman County, Texas

NWS Amarillo, TX issued this severe thunderstorm warning at May 14, 2021, 5:59 PM CDT for Dallam County, Hartley County, Sherman County, Texas. It was in force for 61 min. 2 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: May 14, 2021, 5:59 PM CDT (22:59 UTC)
Expired: May 14, 2021, 7:00 PM CDT
In force: 61 min
Issued by: NWS Amarillo, TX
Area: Storm-based polygon
Hail: 1.5 in
Wind: 70.0 mph

Counties Dallam County, TX, Hartley County, TX, Sherman County, TX

The radar

The Amarillo radar (KAMA), 115 km from the middle of the area, began a volume at 22:59 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.

What was reported inside it

Time	Report	Where	Remark
May 14, 6:04 PM CDT	HAIL 1	4 E Dalhart, TX
May 14, 6:17 PM CDT	HAIL 0.88	11 W Cactus, TX

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

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 14, 4:30 PM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Amarillo Airport, TX (KAMA), launched 12:00Z, 11.0 hours before the alert went out and 115 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: 51 J/kg
Mixed-layer CIN: -519 J/kg
Mixed-layer LCL: 807 m above ground
0-6 km bulk shear: 35 kt
0-1 km storm-relative helicity: 364 m²/s²
0-3 km storm-relative helicity: 385 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.4

Open this sounding in Storm Lab

The text

As transmitted.

426 
WUUS54 KAMA 142259
SVRAMA
TXC111-205-421-150000-
/O.NEW.KAMA.SV.W.0048.210514T2259Z-210515T0000Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Amarillo TX
559 PM CDT Fri May 14 2021

The National Weather Service in Amarillo has issued a

* Severe Thunderstorm Warning for...
  Southwestern Sherman County in the Panhandle of Texas...
  Eastern Dallam County in the Panhandle of Texas...
  Northeastern Hartley County in the Panhandle of Texas...

* Until 700 PM CDT.

* At 559 PM CDT, a severe thunderstorm was located 8 miles east of
  Dalhart, moving northeast at 20 mph.

  HAZARD...70 mph wind gusts and ping pong ball size hail.

  SOURCE...Radar indicated.

  IMPACT...Expect some tree damage. Damage is likely to mobile 
           homes, roofs, and outbuildings. People and animals 
           outdoors will be injured. Expect hail damage to roofs, 
           siding, windows, and vehicles.

* Locations impacted include...
  Dalhart, Stratford, Hartley and Conlen. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3645 10245 3627 10184 3605 10214 3606 10216
      3604 10216 3587 10239 3603 10248 3611 10257
TIME...MOT...LOC 2259Z 207DEG 20KT 3610 10237 

HAIL...1.50IN
WIND...70MPH
 
$$

Bieda

1 follow-up statement

547 
WWUS54 KAMA 142314
SVSAMA

Severe Weather Statement
National Weather Service Amarillo TX
614 PM CDT Fri May 14 2021

TXC111-205-421-150000-
/O.CON.KAMA.SV.W.0048.000000T0000Z-210515T0000Z/
Sherman TX-Dallam TX-Hartley TX-
614 PM CDT Fri May 14 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 700 PM CDT
FOR SOUTHWESTERN SHERMAN...EASTERN DALLAM AND NORTHEASTERN HARTLEY
COUNTIES...

At 613 PM CDT, a severe thunderstorm was located 6 miles southwest of
Conlen, or 13 miles northeast of Dalhart, moving northeast at 25 mph.

HAZARD...70 mph wind gusts and quarter size hail.

SOURCE...Trained weather spotters reported quarter size hail 4 miles 
         east of Dalhart at 604 PM CDT.

IMPACT...Expect some tree damage. Damage is likely to mobile homes, 
         roofs, and outbuildings. Hail damage to vehicles is 
         expected.

Locations impacted include...
Dalhart, Stratford and Conlen. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 3645 10245 3627 10184 3605 10214 3606 10216
      3604 10216 3592 10232 3603 10248 3606 10252
TIME...MOT...LOC 2313Z 207DEG 20KT 3617 10232 

HAIL...1.00IN
WIND...70MPH
 
$$

Bieda

The office that day

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

Issued	Product	Office	Counties	Lasted
May 14, 9:03 AM CDT	Special Weather Statement	AMA	Roberts	27 min
May 14, 11:03 AM CDT	Special Weather Statement	AMA	Wheeler	27 min
May 14, 4:49 PM CDT	Special Weather Statement	AMA	Deaf Smith	41 min
May 14, 4:51 PM CDT	Special Weather Statement	AMA	Dallam	24 min
May 14, 5:11 PM CDT	Special Weather Statement	AMA	Dallam	34 min
May 14, 5:13 PM CDT	Special Weather Statement	AMA	Moore	32 min
May 14, 5:20 PM CDT	Special Weather Statement	AMA	Oldham	40 min
May 14, 5:27 PM CDT	Severe Thunderstorm Warning	AMA	Deaf Smith, Oldham	63 min
May 14, 5:31 PM CDT	Severe Thunderstorm Warning	AMA	Hartley, Moore, Oldham, Potter	59 min
May 14, 5:33 PM CDT	Special Weather Statement	AMA	Deaf Smith	42 min
May 14, 5:41 PM CDT	Special Weather Statement	AMA	Sherman	34 min
May 14, 5:48 PM CDT	Severe Thunderstorm Warning	AMA	Dallam, Sherman	57 min
May 14, 5:55 PM CDT	Severe Thunderstorm Warning	AMA	Deaf Smith, Oldham, Potter, Randall	65 min
May 14, 6:26 PM CDT	Special Weather Statement	AMA	Moore	34 min
May 14, 6:34 PM CDT	Severe Thunderstorm Warning	AMA	Dallam, Hartley, Moore, Potter, Sherman	56 min

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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.