Alert archive / Texas / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 95, NWS Amarillo, TX

May 18, 2021Deaf Smith County, Oldham County, Potter County, Texas

NWS Amarillo, TX issued this severe thunderstorm warning at May 18, 2021, 4:00 PM CDT for Deaf Smith County, Oldham County, Potter County, Texas. It was in force for 90 min. 3 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 18, 2021, 4:00 PM CDT (21:00 UTC)
Expired: May 18, 2021, 5:30 PM CDT
In force: 90 min
Issued by: NWS Amarillo, TX
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Deaf Smith County, TX, Oldham County, TX, Potter County, TX

The radar

The Amarillo radar (KAMA), 56 km from the middle of the area, began a volume at 21:01 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 18, 4:23 PM CDT	HAIL 1	4 W Vega, TX	REPORT FROM MPING: QUARTER (1.00 IN.).
May 18, 4:47 PM CDT	HAIL 0.75	4 W Wildorado, TX	REPORT FROM MPING: DIME (0.75 IN.).
May 18, 5:20 PM CDT	FUNNEL CLOUD	6 Sse Boys Ranch, TX	BRIEF FUNNEL CLOUD.

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, 9.0 hours before the alert went out and 57 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: 1488 m above ground
0-6 km bulk shear: 23 kt
0-1 km storm-relative helicity: -55 m²/s²
0-3 km storm-relative helicity: 72 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.0

Open this sounding in Storm Lab

The text

As transmitted.

559 
WUUS54 KAMA 182100
SVRAMA
TXC117-359-375-182230-
/O.NEW.KAMA.SV.W.0095.210518T2100Z-210518T2230Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Amarillo TX
400 PM CDT Tue May 18 2021

The National Weather Service in Amarillo has issued a

* Severe Thunderstorm Warning for...
  Eastern Oldham County in the Panhandle of Texas...
  Northeastern Deaf Smith County in the Panhandle of Texas...
  Northwestern Potter County in the Panhandle of Texas...

* Until 530 PM CDT.

* At 359 PM CDT, a severe thunderstorm was located 7 miles southeast
  of Adrian, or 8 miles west of Vega, moving northeast at 25 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...
  Vega, Boys Ranch, Wildorado and Valley De Oro. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3495 10246 3517 10272 3563 10244 3562 10194
      3541 10190
TIME...MOT...LOC 2059Z 211DEG 21KT 3520 10257 

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

LG

8 follow-up statements

575 
WWUS54 KAMA 182110
SVSAMA

Severe Weather Statement
National Weather Service Amarillo TX
410 PM CDT Tue May 18 2021

TXC117-359-375-182230-
/O.CON.KAMA.SV.W.0095.000000T0000Z-210518T2230Z/
Oldham TX-Deaf Smith TX-Potter TX-
410 PM CDT Tue May 18 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 530 PM CDT
FOR EASTERN OLDHAM...NORTHEASTERN DEAF SMITH AND NORTHWESTERN POTTER
COUNTIES...

At 409 PM CDT, a severe thunderstorm was located 6 miles east of
Adrian, or 7 miles west of Vega, moving northeast at 20 mph.

HAZARD...70 mph wind gusts and half dollar 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...
Vega, Boys Ranch, Wildorado and Valley De Oro. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3495 10246 3517 10272 3563 10244 3562 10194
      3541 10190
TIME...MOT...LOC 2109Z 228DEG 17KT 3524 10256 

HAIL...1.25IN
WIND...70MPH
 
$$

LG

062 
WWUS54 KAMA 182119
SVSAMA

Severe Weather Statement
National Weather Service Amarillo TX
419 PM CDT Tue May 18 2021

TXC117-359-375-182230-
/O.CON.KAMA.SV.W.0095.000000T0000Z-210518T2230Z/
Oldham TX-Deaf Smith TX-Potter TX-
419 PM CDT Tue May 18 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 530 PM CDT
FOR EASTERN OLDHAM...NORTHEASTERN DEAF SMITH AND NORTHWESTERN POTTER
COUNTIES...

At 419 PM CDT, a severe thunderstorm was located 4 miles northwest of
Vega, moving northeast at 20 mph.

HAZARD...70 mph wind gusts and ping pong ball size hail.

SOURCE...Radar indicated.

IMPACT...Expect some tree damage. Damage is likely to mobile homes, 
         roofs, and outbuildings. People and animals outdoors will 
         be injured. Expect hail damage to roofs, siding, windows, 
         and vehicles.

Locations impacted include...
Vega, Boys Ranch, Wildorado and Valley De Oro. 

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 3495 10246 3517 10272 3563 10244 3562 10194
      3541 10190
TIME...MOT...LOC 2119Z 229DEG 20KT 3528 10250 

HAIL...1.50IN
WIND...70MPH
 
$$

LG

679 
WWUS54 KAMA 182129
SVSAMA

Severe Weather Statement
National Weather Service Amarillo TX
429 PM CDT Tue May 18 2021

TXC117-359-375-182230-
/O.CON.KAMA.SV.W.0095.000000T0000Z-210518T2230Z/
Oldham TX-Deaf Smith TX-Potter TX-
429 PM CDT Tue May 18 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 530 PM CDT
FOR EASTERN OLDHAM...NORTHEASTERN DEAF SMITH AND NORTHWESTERN POTTER
COUNTIES...

At 429 PM CDT, a severe thunderstorm was located near Vega, moving
northeast at 20 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...
Vega, Boys Ranch, Wildorado and Valley De Oro. 

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 3495 10246 3517 10272 3563 10244 3562 10194
      3541 10190
TIME...MOT...LOC 2129Z 231DEG 17KT 3529 10246 

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

LG

844 
WWUS54 KAMA 182139
SVSAMA

Severe Weather Statement
National Weather Service Amarillo TX
439 PM CDT Tue May 18 2021

TXC117-359-375-182230-
/O.CON.KAMA.SV.W.0095.000000T0000Z-210518T2230Z/
Oldham TX-Deaf Smith TX-Potter TX-
439 PM CDT Tue May 18 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 530 PM CDT
FOR EASTERN OLDHAM...NORTHEASTERN DEAF SMITH AND NORTHWESTERN POTTER
COUNTIES...

At 439 PM CDT, a severe thunderstorm was located 5 miles northeast of
Vega, moving northeast at 25 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...
Vega, Boys Ranch, Wildorado and Valley De Oro. 

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 3495 10246 3517 10272 3563 10244 3562 10194
      3541 10190
TIME...MOT...LOC 2139Z 241DEG 20KT 3530 10236 

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

LG

059 
WWUS54 KAMA 182146
SVSAMA

Severe Weather Statement
National Weather Service Amarillo TX
446 PM CDT Tue May 18 2021

TXC117-359-375-182230-
/O.CON.KAMA.SV.W.0095.000000T0000Z-210518T2230Z/
Oldham TX-Deaf Smith TX-Potter TX-
446 PM CDT Tue May 18 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 530 PM CDT
FOR EASTERN OLDHAM...NORTHEASTERN DEAF SMITH AND NORTHWESTERN POTTER
COUNTIES...

At 446 PM CDT, a severe thunderstorm was located 6 miles northwest of
Wildorado, or 7 miles northeast of Vega, moving east at 25 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...
Vega, Boys Ranch, Wildorado and Valley De Oro. 

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 3514 10269 3559 10240 3562 10194 3541 10190
      3495 10246
TIME...MOT...LOC 2146Z 250DEG 22KT 3530 10230 

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

LG

246 
WWUS54 KAMA 182154
SVSAMA

Severe Weather Statement
National Weather Service Amarillo TX
454 PM CDT Tue May 18 2021

TXC117-359-375-182230-
/O.CON.KAMA.SV.W.0095.000000T0000Z-210518T2230Z/
Oldham TX-Deaf Smith TX-Potter TX-
454 PM CDT Tue May 18 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 530 PM CDT
FOR EASTERN OLDHAM...NORTHEASTERN DEAF SMITH AND NORTHWESTERN POTTER
COUNTIES...

At 454 PM CDT, a severe thunderstorm was located 7 miles north of
Wildorado, or 10 miles northeast of Vega, moving east at 20 mph.

HAZARD...60 mph wind gusts and half dollar size hail.

SOURCE...Radar indicated.

IMPACT...Minor damage to roofs, siding, and trees is possible. Hail 
         damage to vehicles is expected.

Locations impacted include...
Vega, Boys Ranch, Wildorado and Valley De Oro. 

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 3510 10264 3559 10240 3562 10194 3541 10190
      3495 10246
TIME...MOT...LOC 2154Z 250DEG 18KT 3532 10227 

HAIL...1.25IN
WIND...60MPH
 
$$

LG

594 
WWUS54 KAMA 182206
SVSAMA

Severe Weather Statement
National Weather Service Amarillo TX
506 PM CDT Tue May 18 2021

TXC117-359-375-182230-
/O.CON.KAMA.SV.W.0095.000000T0000Z-210518T2230Z/
Oldham TX-Deaf Smith TX-Potter TX-
506 PM CDT Tue May 18 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 530 PM CDT
FOR EASTERN OLDHAM...NORTHEASTERN DEAF SMITH AND NORTHWESTERN POTTER
COUNTIES...

At 505 PM CDT, a severe thunderstorm was located 8 miles north of
Wildorado, or 13 miles northeast of Vega, moving east at 20 mph.

HAZARD...60 mph wind gusts and half dollar size hail.

SOURCE...Radar indicated.

IMPACT...Minor damage to roofs, siding, and trees is possible. Hail 
         damage to vehicles is expected.

Locations impacted include...
Vega, Boys Ranch, Wildorado and Valley De Oro. 

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 3507 10261 3559 10240 3562 10194 3541 10190
      3495 10246
TIME...MOT...LOC 2205Z 247DEG 18KT 3534 10222 

HAIL...1.25IN
WIND...60MPH
 
$$

LG

015 
WWUS54 KAMA 182212
SVSAMA

Severe Weather Statement
National Weather Service Amarillo TX
512 PM CDT Tue May 18 2021

TXC117-359-375-182230-
/O.CON.KAMA.SV.W.0095.000000T0000Z-210518T2230Z/
Oldham TX-Deaf Smith TX-Potter TX-
512 PM CDT Tue May 18 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 530 PM CDT
FOR EASTERN OLDHAM...NORTHEASTERN DEAF SMITH AND NORTHWESTERN POTTER
COUNTIES...

At 512 PM CDT, a severe thunderstorm was located 8 miles south of
Boys Ranch, or 14 miles northeast of Vega, moving northeast at 20
mph.

HAZARD...60 mph wind gusts and half dollar size hail.

SOURCE...Radar indicated.

IMPACT...Minor damage to roofs, siding, and trees is possible. Hail 
         damage to vehicles is expected.

Locations impacted include...
Vega, Boys Ranch, Wildorado and Valley De Oro. 

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 3507 10261 3559 10240 3562 10194 3541 10190
      3495 10246
TIME...MOT...LOC 2212Z 233DEG 16KT 3539 10225 

HAIL...1.25IN
WIND...60MPH
 
$$

LG

The office that day

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

Issued	Product	Office	Counties	Lasted
May 17, 7:06 PM CDT	Areal Flood Advisory	AMA	Randall	21 min
May 17, 7:15 PM CDT	Severe Thunderstorm Warning	AMA	Dallam, Hartley, Moore, Sherman	60 min
May 17, 7:15 PM CDT	Severe Thunderstorm Warning	AMA	Deaf Smith, Hartley, Moore, Oldham, Potter, Randall	60 min
May 17, 7:27 PM CDT	Flash Flood Warning	AMA	Randall	3 hr
May 17, 7:30 PM CDT	Areal Flood Advisory	AMA	Dallam, Hartley, Oldham	36 min
May 17, 7:33 PM CDT	Severe Thunderstorm Warning	AMA	Deaf Smith, Randall	27 min
May 17, 7:35 PM CDT	Areal Flood Advisory	AMA	Potter, Randall	3 hr
May 17, 7:36 PM CDT	Special Weather Statement	AMA	Moore	24 min
May 17, 7:59 PM CDT	Severe Thunderstorm Warning	AMA	Armstrong, Carson, Hartley, Hutchinson, Moore, Potter and 1 more	76 min
May 17, 8:05 PM CDT	Severe Thunderstorm Warning	AMA	Dallam, Sherman	55 min
May 17, 8:06 PM CDT	Flash Flood Warning	AMA	Dallam, Hartley, Oldham	52 min
May 17, 8:09 PM CDT	Severe Thunderstorm Warning	AMA	Armstrong, Collingsworth, Donley, Gray	66 min
May 17, 8:41 PM CDT	Special Weather Statement	AMA	Dallam, Sherman	34 min
May 17, 9:08 PM CDT	Severe Thunderstorm Warning	AMA	Gray, Roberts	67 min
May 17, 9:15 PM CDT	Severe Thunderstorm Warning	AMA	Carson, Hansford, Hutchinson, Moore, Ochiltree, Potter and 2 more	60 min
May 17, 9:52 PM CDT	Special Weather Statement	AMA	Hansford, Hemphill, Ochiltree, Roberts	23 min
May 17, 10:13 PM CDT	Special Weather Statement	AMA	Hemphill, Lipscomb, Ochiltree, Roberts	62 min
May 17, 11:11 PM CDT	Special Weather Statement	AMA	Lipscomb	49 min
May 18, 6:43 AM CDT	Dense Fog Advisory	AMA	Armstrong, Carson, Deaf Smith, Oldham, Potter, Randall	2 hr
May 18, 10:31 AM CDT	Special Weather Statement	AMA	Deaf Smith	44 min
May 18, 2:43 PM CDT	Special Weather Statement	AMA	Deaf Smith	62 min
May 18, 2:53 PM CDT	Severe Thunderstorm Warning	AMA	Deaf Smith, Oldham	97 min
May 18, 3:21 PM CDT	Special Weather Statement	AMA	Carson	39 min
May 18, 4:16 PM CDT	Special Weather Statement	AMA	Carson	44 min
May 18, 5:19 PM CDT	Severe Thunderstorm Warning	AMA	Armstrong, Carson, Moore, Oldham, Potter, Randall	86 min
May 18, 5:26 PM CDT	Areal Flood Advisory	AMA	Potter, Randall	3 hr
May 18, 5:27 PM CDT	Special Weather Statement	AMA	Carson	33 min
May 18, 5:45 PM CDT	Areal Flood Advisory	AMA	Armstrong, Carson, Hutchinson	3 hr
May 18, 6:03 PM CDT	Special Weather Statement	AMA	Carson	42 min
May 18, 6:28 PM CDT	Special Weather Statement	AMA	Hutchinson	47 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.