Alert archive / Texas / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 49, NWS Amarillo, TX

May 14, 20215 counties in Texas

NWS Amarillo, TX issued this severe thunderstorm warning at May 14, 2021, 6:34 PM CDT for 5 counties in 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 outline as issued.

The facts

Issued: May 14, 2021, 6:34 PM CDT (23:34 UTC)
Expired: May 14, 2021, 7:30 PM CDT
In force: 56 min
Issued by: NWS Amarillo, TX
Area: Storm-based polygon
Hail: 1.0 in
Wind: 70.0 mph

Counties Dallam County, TX, Hartley County, TX, Moore County, TX, Potter County, TX, Sherman County, TX

The radar

The Amarillo radar (KAMA), 95 km from the middle of the area, began a volume at 23:33 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, 11.6 hours before the alert went out and 96 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.

596 
WUUS54 KAMA 142334
SVRAMA
TXC111-205-341-375-421-150030-
/O.NEW.KAMA.SV.W.0049.210514T2334Z-210515T0030Z/

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

The National Weather Service in Amarillo has issued a

* Severe Thunderstorm Warning for...
  Northern Potter County in the Panhandle of Texas...
  Sherman County in the Panhandle of Texas...
  Southeastern Dallam County in the Panhandle of Texas...
  Moore County in the Panhandle of Texas...
  Northeastern Hartley County in the Panhandle of Texas...

* Until 730 PM CDT.

* At 634 PM CDT, severe thunderstorms were located along a line
  extending from 8 miles south of Conlen to Masterson, moving east at
  20 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...
  Dumas, Stratford, Cactus, Fritch, Sunray, Four Way, Conlen,
  Masterson, Lake Meredith and Texhoma.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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

&&

LAT...LON 3650 10163 3545 10162 3551 10216 3587 10216
      3615 10234 3650 10204
TIME...MOT...LOC 2334Z 270DEG 18KT 3611 10226 3562 10196 

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

Bieda

1 follow-up statement

729 
WWUS54 KAMA 150030
SVSAMA

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

TXC111-205-341-375-421-150040-
/O.EXP.KAMA.SV.W.0049.000000T0000Z-210515T0030Z/
Potter TX-Sherman TX-Dallam TX-Moore TX-Hartley TX-
730 PM CDT Fri May 14 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN POTTER...SHERMAN...
SOUTHEASTERN DALLAM...MOORE AND NORTHEASTERN HARTLEY COUNTIES HAS
EXPIRED...
            
The storms which prompted the warning have weakened below severe
limits, and no longer pose an immediate threat to life or property.
Therefore, the warning has been allowed to expire.

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

LAT...LON 3650 10163 3545 10162 3551 10216 3587 10216
      3615 10234 3650 10204
TIME...MOT...LOC 0030Z 270DEG 18KT 3611 10195 3562 10165 

$$

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, 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

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.