Alert archive / Texas / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 45, NWS Amarillo, TX

May 14, 2021Dallam County, Sherman County, Texas; Cimarron County, Oklahoma

NWS Amarillo, TX issued this severe thunderstorm warning at May 14, 2021, 5:48 PM CDT for Dallam County, Sherman County, Texas; Cimarron County, Oklahoma. It was in force for 57 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 14, 2021, 5:48 PM CDT (22:48 UTC)
Expired: May 14, 2021, 6:45 PM CDT
In force: 57 min
Issued by: NWS Amarillo, TX
Area: Storm-based polygon
Hail: 1.0 in
Wind: 70.0 mph

Counties Cimarron County, OK, Dallam County, TX, Sherman County, TX

The radar

The Amarillo radar (KAMA), 131 km from the middle of the area, began a volume at 22:49 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 14, 4:30 PM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Amarillo Airport, TX (KAMA), launched 12:00Z, 10.8 hours before the alert went out and 131 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.

651 
WUUS54 KAMA 142248
SVRAMA
OKC025-TXC111-421-142345-
/O.NEW.KAMA.SV.W.0045.210514T2248Z-210514T2345Z/

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

The National Weather Service in Amarillo has issued a

* Severe Thunderstorm Warning for...
  Southern Cimarron County in the Panhandle of Oklahoma...
  Northwestern Sherman County in the Panhandle of Texas...
  Northeastern Dallam County in the Panhandle of Texas...

* Until 645 PM CDT.

* At 548 PM CDT, a severe thunderstorm was located 7 miles north of
  Conlen, or 11 miles west of Stratford, moving northeast at 15 mph.

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

  SOURCE...Radar indicated.

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

* Locations impacted include...
  Stratford and Conlen. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3620 10232 3635 10242 3657 10218 3632 10195
TIME...MOT...LOC 2248Z 234DEG 13KT 3634 10228 

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

Bieda

1 follow-up statement

653 
WWUS54 KAMA 142310
SVSAMA

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

OKC025-TXC111-421-142345-
/O.CON.KAMA.SV.W.0045.000000T0000Z-210514T2345Z/
Cimarron OK-Sherman TX-Dallam TX-
610 PM CDT Fri May 14 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 645 PM CDT
FOR SOUTHERN CIMARRON...NORTHWESTERN SHERMAN AND NORTHEASTERN DALLAM
COUNTIES...

At 610 PM CDT, a severe thunderstorm was located 7 miles west of
Stratford, moving east at 10 mph.

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

SOURCE...Radar indicated.

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

Locations impacted include...
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 3620 10232 3635 10242 3657 10218 3632 10195
TIME...MOT...LOC 2310Z 252DEG 11KT 3635 10221 

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, 5:55 PM CDT	Severe Thunderstorm Warning	AMA	Deaf Smith, Oldham, Potter, Randall	65 min
May 14, 5:59 PM CDT	Severe Thunderstorm Warning	AMA	Dallam, Hartley, Sherman	61 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
May 14, 5:50 PM CDT	Severe Thunderstorm Warning	AMA	Cimarron	38 min

Nearby

Severe Thunderstorm Warnings in Texas, 2021 Severe Thunderstorm Warnings in Oklahoma, 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.