Alert archive / Texas / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 66, NWS Amarillo, TX

May 16, 2021Deaf Smith County, Oldham County, Texas

NWS Amarillo, TX issued this severe thunderstorm warning at May 16, 2021, 6:12 PM CDT for Deaf Smith County, Oldham County, Texas. It was in force for 63 min. 4 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 16, 2021, 6:12 PM CDT (23:12 UTC)
Expired: May 16, 2021, 7:15 PM CDT
In force: 63 min
Issued by: NWS Amarillo, TX
Area: Storm-based polygon
Hail: 1.5 in
Wind: 60.0 mph

Counties Deaf Smith County, TX, Oldham County, TX

The radar

The Amarillo radar (KAMA), 75 km from the middle of the area, began a volume at 23:17 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 16, 6:47 PM CDT	HAIL 0.75	7 Sse Vega, TX	REPORT FROM MPING: DIME (0.75 IN.).
May 16, 6:59 PM CDT	HAIL 1	10 S Vega, TX	REPORT FROM MPING: QUARTER (1.00 IN.).
May 16, 6:59 PM CDT	HAIL 1.75	9 S Vega, TX
May 16, 7:02 PM CDT	HAIL 1	9 S Vega, TX	REPORT FROM MPING: QUARTER (1.00 IN.).

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 16, 3:43 PM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Amarillo Airport, TX (KAMA), launched 12:00Z, 11.2 hours before the alert went out and 76 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: 1470 m above ground
0-6 km bulk shear: 11 kt
0-1 km storm-relative helicity: -57 m²/s²
0-3 km storm-relative helicity: -16 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

103 
WUUS54 KAMA 162312
SVRAMA
TXC117-359-170015-
/O.NEW.KAMA.SV.W.0066.210516T2312Z-210517T0015Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Amarillo TX
612 PM CDT Sun May 16 2021

The National Weather Service in Amarillo has issued a

* Severe Thunderstorm Warning for...
  South central Oldham County in the Panhandle of Texas...
  Northeastern Deaf Smith County in the Panhandle of Texas...

* Until 715 PM CDT.

* At 612 PM CDT, a severe thunderstorm was located 9 miles southwest
  of Vega, and is nearly stationary.

  HAZARD...Ping pong ball size hail and 60 mph wind gusts.

  SOURCE...Radar indicated.

  IMPACT...Minor damage to roofs, siding, and trees is possible. 
           People and animals outdoors will be injured. Expect hail 
           damage to roofs, siding, windows, and vehicles. Hail may 
           accumulate on roadways causing hazardous travel.

* This severe thunderstorm will remain over mainly rural areas of
  south central Oldham and northeastern Deaf Smith Counties.

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 3503 10263 3518 10268 3525 10237 3504 10229
TIME...MOT...LOC 2312Z 250DEG 2KT 3513 10253 

HAIL...1.50IN
WIND...60MPH
 
$$

Rutt

2 follow-up statements

769 
WWUS54 KAMA 162337
SVSAMA

Severe Weather Statement
National Weather Service Amarillo TX
637 PM CDT Sun May 16 2021

TXC117-359-170015-
/O.CON.KAMA.SV.W.0066.000000T0000Z-210517T0015Z/
Oldham TX-Deaf Smith TX-
637 PM CDT Sun May 16 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 715 PM CDT
FOR SOUTH CENTRAL OLDHAM AND NORTHEASTERN DEAF SMITH COUNTIES...

At 636 PM CDT, a severe thunderstorm was located 9 miles southwest of
Vega, and is nearly stationary.

HAZARD...Ping pong ball size hail and 60 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...Minor damage to roofs, siding, and trees is possible. 
         People and animals outdoors will be injured. Expect hail 
         damage to roofs, siding, windows, and vehicles. Hail may 
         accumulate on roadways causing hazardous travel.

This severe thunderstorm will remain over mainly rural areas of south
central Oldham and northeastern Deaf Smith Counties.

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 3506 10258 3519 10264 3525 10237 3504 10229
TIME...MOT...LOC 2336Z 250DEG 2KT 3513 10251 

HAIL...1.50IN
WIND...60MPH
 
$$

Rutt

011 
WWUS54 KAMA 170014
SVSAMA

Severe Weather Statement
National Weather Service Amarillo TX
714 PM CDT Sun May 16 2021

TXC117-359-170024-
/O.EXP.KAMA.SV.W.0066.000000T0000Z-210517T0015Z/
Oldham TX-Deaf Smith TX-
714 PM CDT Sun May 16 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTH CENTRAL OLDHAM AND
NORTHEASTERN DEAF SMITH COUNTIES WILL EXPIRE AT 715 PM CDT...
        
The storm which prompted the warning has weakened below severe
limits, and has exited the warned area. Therefore, the warning will
be allowed to expire.

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

LAT...LON 3506 10258 3519 10264 3525 10237 3504 10229
TIME...MOT...LOC 0014Z 250DEG 2KT 3514 10249 

$$

Rutt

The office that day

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

Issued	Product	Office	Counties	Lasted
May 15, 7:40 PM CDT	Severe Thunderstorm Warning	AMA	Dallam, Hartley	20 min
May 15, 9:09 PM CDT	Special Weather Statement	AMA	Sherman	36 min
May 15, 9:22 PM CDT	Severe Thunderstorm Warning	AMA	Moore, Sherman	23 min
May 15, 9:27 PM CDT	Special Weather Statement	AMA	Potter	33 min
May 15, 9:32 PM CDT	Severe Thunderstorm Warning	AMA	Deaf Smith, Oldham, Potter, Randall	28 min
May 15, 9:49 PM CDT	Severe Thunderstorm Warning	AMA	Hansford, Hutchinson, Moore, Sherman	16 min
May 15, 9:59 PM CDT	Severe Thunderstorm Warning	AMA	Hansford	28 min
May 15, 10:14 PM CDT	Special Weather Statement	AMA	Randall	31 min
May 15, 10:36 PM CDT	Special Weather Statement	AMA	Armstrong	24 min
May 15, 11:11 PM CDT	Special Weather Statement	AMA	Potter	64 min
May 15, 11:32 PM CDT	Special Weather Statement	AMA	Ochiltree	58 min
May 15, 11:47 PM CDT	Areal Flood Advisory	AMA	Potter, Randall	3 hr
May 16, 4:25 PM CDT	Special Weather Statement	AMA	Potter	35 min
May 16, 4:34 PM CDT	Severe Thunderstorm Warning	AMA	Moore, Potter	56 min
May 16, 4:37 PM CDT	Severe Thunderstorm Warning	AMA	Armstrong, Carson, Potter, Randall	68 min
May 16, 4:46 PM CDT	Severe Thunderstorm Warning	AMA	Potter, Randall	59 min
May 16, 5:22 PM CDT	Severe Thunderstorm Warning	AMA	Deaf Smith, Oldham	53 min
May 16, 5:45 PM CDT	Severe Thunderstorm Warning	AMA	Armstrong, Carson, Potter, Randall	60 min
May 16, 5:57 PM CDT	Severe Thunderstorm Warning	AMA	Carson, Moore, Potter	63 min
May 16, 6:33 PM CDT	Severe Thunderstorm Warning	AMA	Carson, Potter, Randall	44 min
May 16, 6:41 PM CDT	Severe Thunderstorm Warning	AMA	Armstrong, Randall	64 min
May 16, 6:48 PM CDT	Areal Flood Advisory	AMA	Deaf Smith, Randall	3 hr

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.