Alert archive / Texas / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 38, NWS Amarillo, TX

May 7, 2021Dallam County, Moore County, Sherman County, Texas

NWS Amarillo, TX issued this severe thunderstorm warning at May 7, 2021, 5:13 PM CDT for Dallam County, Moore County, Sherman County, Texas. It was in force for 62 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 7, 2021, 5:13 PM CDT (22:13 UTC)
Expired: May 7, 2021, 6:15 PM CDT
In force: 62 min
Issued by: NWS Amarillo, TX
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Dallam County, TX, Moore County, TX, Sherman County, TX

The radar

The Amarillo radar (KAMA), 121 km from the middle of the area, began a volume at 22:16 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 12:00Z, 10.2 hours before the alert went out and 121 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1870 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: 341 m²/s²
0-3 km storm-relative helicity: 598 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

649 
WUUS54 KAMA 072213
SVRAMA
TXC111-341-421-072315-
/O.NEW.KAMA.SV.W.0038.210507T2213Z-210507T2315Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Amarillo TX
513 PM CDT Fri May 7 2021

The National Weather Service in Amarillo has issued a

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

* Until 615 PM CDT.

* At 513 PM CDT, a severe thunderstorm was located 4 miles southwest
  of Stratford, moving east at 40 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...
  Stratford, Cactus, Sunray, Conlen and Texhoma. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3650 10163 3594 10162 3610 10229 3650 10227
TIME...MOT...LOC 2213Z 260DEG 36KT 3630 10213 

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

Guerrero

1 follow-up statement

846 
WWUS54 KAMA 072307
SVSAMA

Severe Weather Statement
National Weather Service Amarillo TX
607 PM CDT Fri May 7 2021

TXC111-072317-
/O.CAN.KAMA.SV.W.0038.000000T0000Z-210507T2315Z/
Dallam TX-
607 PM CDT Fri May 7 2021

...THE SEVERE THUNDERSTORM WARNING FOR EASTERN DALLAM COUNTY IS
CANCELLED...
   
The severe thunderstorm which prompted the warning has moved out of 
the warned area. Therefore, the warning has been cancelled.

LAT...LON 3650 10163 3594 10162 3607 10198 3650 10187
TIME...MOT...LOC 2307Z 260DEG 36KT 3639 10147 

$$

TXC341-421-072315-
/O.CON.KAMA.SV.W.0038.000000T0000Z-210507T2315Z/
Sherman TX-Moore TX-
607 PM CDT Fri May 7 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 615 PM CDT
FOR EASTERN SHERMAN AND NORTHEASTERN MOORE COUNTIES...

At 607 PM CDT, a severe thunderstorm was located 9 miles north of
Gruver, or 20 miles south of Guymon, moving east at 40 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...
Sunray and Texhoma. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3650 10163 3594 10162 3607 10198 3650 10187
TIME...MOT...LOC 2307Z 260DEG 36KT 3639 10147 

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

Guerrero

The office that day

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

Issued	Product	Office	Counties	Lasted
May 7, 2:42 PM CDT	Fire Weather Watch	AMA	Dallam, Deaf Smith, Hartley, Oldham	13 hr
May 7, 3:33 PM CDT	Special Weather Statement	AMA	Moore	57 min
May 7, 4:33 PM CDT	Special Weather Statement	AMA	Oldham	57 min
May 7, 4:38 PM CDT	Special Weather Statement	AMA	Dallam	67 min
May 7, 4:47 PM CDT	Special Weather Statement	AMA	Potter	58 min
May 7, 4:52 PM CDT	Severe Thunderstorm Warning	AMA	Oldham	68 min
May 7, 5:00 PM CDT	Special Weather Statement	AMA	Lipscomb	60 min
May 7, 5:03 PM CDT	Special Weather Statement	AMA	Sherman	57 min
May 7, 5:06 PM CDT	Special Weather Statement	AMA	Randall	54 min
May 7, 5:20 PM CDT	Special Weather Statement	AMA	Deaf Smith	55 min
May 7, 5:38 PM CDT	Severe Thunderstorm Warning	AMA	Armstrong, Carson, Deaf Smith, Hutchinson, Moore, Oldham and 2 more	82 min
May 7, 6:01 PM CDT	Special Weather Statement	AMA	Hansford, Hutchinson, Ochiltree	59 min
May 7, 6:19 PM CDT	Special Weather Statement	AMA	Roberts	56 min
May 7, 6:27 PM CDT	Severe Thunderstorm Warning	AMA	Carson, Gray, Hansford, Hutchinson, Ochiltree, Roberts	63 min
May 7, 6:45 PM CDT	Severe Thunderstorm Warning	AMA	Hemphill, Lipscomb, Ochiltree, Roberts	60 min
May 7, 6:50 PM CDT	Severe Thunderstorm Warning	AMA	Armstrong, Carson, Donley, Gray, Randall	55 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.