Alert archive / Texas / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 41, NWS Amarillo, TX

May 7, 20214 counties in Texas

NWS Amarillo, TX issued this severe thunderstorm warning at May 7, 2021, 6:45 PM CDT for 4 counties in Texas. It was in force for 60 min. 1 report 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 7, 2021, 6:45 PM CDT (23:45 UTC)
Expired: May 7, 2021, 7:45 PM CDT
In force: 60 min
Issued by: NWS Amarillo, TX
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Hemphill County, TX, Lipscomb County, TX, Ochiltree County, TX, Roberts County, TX

The radar

The Amarillo radar (KAMA), 139 km from the middle of the area, began a volume at 23:48 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 7, 6:48 PM CDT	HAIL 1	Miami, TX	PENNY TO QUARTER SIZE HAIL.

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

The nearest sounding before it

Amarillo Airport, TX (KAMA), launched 12:00Z, 11.8 hours before the alert went out and 139 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.

576 
WUUS54 KAMA 072345
SVRAMA
TXC211-295-357-393-080045-
/O.NEW.KAMA.SV.W.0041.210507T2345Z-210508T0045Z/

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

The National Weather Service in Amarillo has issued a

* Severe Thunderstorm Warning for...
  Southern Lipscomb County in the Panhandle of Texas...
  Eastern Roberts County in the Panhandle of Texas...
  Hemphill County in the Panhandle of Texas...
  Southeastern Ochiltree County in the Panhandle of Texas...

* Until 745 PM CDT.

* At 645 PM CDT, a severe thunderstorm was located 4 miles northwest
  of Miami, 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...
  Lipscomb, Canadian, Miami, Higgins, Lora, Glazier and Lake Marvin. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3563 10066 3609 10064 3643 10001 3563 10000
TIME...MOT...LOC 2345Z 259DEG 34KT 3574 10068 

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, 5:13 PM CDT	Severe Thunderstorm Warning	AMA	Dallam, Moore, Sherman	62 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, 6:50 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.