Alert archive / Texas / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 92, NWS Amarillo, TX

May 17, 20218 counties in Texas

NWS Amarillo, TX issued this severe thunderstorm warning at May 17, 2021, 9:15 PM CDT for 8 counties in Texas. It was in force for 60 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 17, 2021, 9:15 PM CDT (02:15 UTC)
Expired: May 17, 2021, 10:15 PM CDT
In force: 60 min
Issued by: NWS Amarillo, TX
Area: Storm-based polygon
Hail: 0.88 in
Wind: 70.0 mph

Counties Carson County, TX, Hansford County, TX, Hutchinson County, TX, Moore County, TX, Ochiltree County, TX, Potter County, TX, Roberts County, TX, Sherman County, TX

The radar

The Amarillo radar (KAMA), 94 km from the middle of the area, began a volume at 02:16 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
May 17, 2:39 PM CDT	Severe Thunderstorm Watch	SPC	8 hr
May 17, 3:04 PM CDT	Tornado Watch	SPC	8 hr

The nearest sounding before it

Amarillo Airport, TX (KAMA), launched 00:00Z, 2.3 hours before the alert went out and 94 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: 1013 J/kg
Mixed-layer CIN: -13 J/kg
Mixed-layer LCL: 1616 m above ground
0-6 km bulk shear: 31 kt
0-1 km storm-relative helicity: 13 m²/s²
0-3 km storm-relative helicity: 139 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 2.3

Open this sounding in Storm Lab

The text

As transmitted.

583 
WUUS54 KAMA 180215
SVRAMA
TXC065-195-233-341-357-375-393-421-180315-
/O.NEW.KAMA.SV.W.0092.210518T0215Z-210518T0315Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Amarillo TX
915 PM CDT Mon May 17 2021

The National Weather Service in Amarillo has issued a

* Severe Thunderstorm Warning for...
  Northern Carson County in the Panhandle of Texas...
  Hutchinson County in the Panhandle of Texas...
  Northeastern Potter County in the Panhandle of Texas...
  Hansford County in the Panhandle of Texas...
  Eastern Sherman County in the Panhandle of Texas...
  Western Roberts County in the Panhandle of Texas...
  Southwestern Ochiltree County in the Panhandle of Texas...
  Eastern Moore County in the Panhandle of Texas...

* Until 1015 PM CDT.

* At 915 PM CDT, severe thunderstorms were located along a line
  extending from 8 miles northwest of Texhoma to 7 miles north of
  Sunray to near Stinnett, moving northeast at 45 mph.

  HAZARD...70 mph wind gusts and nickel size hail.

  SOURCE...Radar indicated.

  IMPACT...Expect some tree damage. Damage is likely to mobile 
           homes, roofs, and outbuildings.

* Locations impacted include...
  Borger, Spearman, Fritch, Sunray, Stinnett, Gruver, Sanford, Morse,
  Lake Meredith, Pringle and Texhoma.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3650 10117 3614 10103 3562 10098 3562 10108
      3559 10109 3556 10174 3650 10199
TIME...MOT...LOC 0215Z 204DEG 39KT 3661 10186 3612 10178 3580 10148 

HAIL...0.88IN
WIND...70MPH
 
$$

TLH

3 follow-up statements

638 
WWUS54 KAMA 180239
SVSAMA

Severe Weather Statement
National Weather Service Amarillo TX
939 PM CDT Mon May 17 2021

TXC065-341-375-180248-
/O.CAN.KAMA.SV.W.0092.000000T0000Z-210518T0315Z/
Carson TX-Potter TX-Moore TX-
939 PM CDT Mon May 17 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN CARSON...NORTHEASTERN
POTTER AND EASTERN MOORE COUNTIES IS CANCELLED...

The storms which prompted the warning have moved out of the warned 
area. Therefore, the warning has been cancelled.

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

LAT...LON 3614 10103 3562 10098 3562 10108 3585 10162
      3650 10165 3650 10117
TIME...MOT...LOC 0238Z 204DEG 39KT 3683 10174 3634 10166 3602 10136 

$$

TXC195-233-357-393-421-180315-
/O.CON.KAMA.SV.W.0092.000000T0000Z-210518T0315Z/
Hutchinson TX-Hansford TX-Sherman TX-Roberts TX-Ochiltree TX-
939 PM CDT Mon May 17 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1015 PM CDT
FOR HUTCHINSON...HANSFORD...NORTHEASTERN SHERMAN...WESTERN ROBERTS
AND SOUTHWESTERN OCHILTREE COUNTIES...

At 938 PM CDT, severe thunderstorms were located along a line
extending from 9 miles east of Eva to 13 miles southeast of Texhoma
to 7 miles east of Morse, moving northeast at 45 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...
Spearman, Stinnett, Gruver, Morse and Pringle. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3614 10103 3562 10098 3562 10108 3585 10162
      3650 10165 3650 10117
TIME...MOT...LOC 0238Z 204DEG 39KT 3683 10174 3634 10166 3602 10136 

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

TLH

893 
WWUS54 KAMA 180255
SVSAMA

Severe Weather Statement
National Weather Service Amarillo TX
955 PM CDT Mon May 17 2021

TXC195-233-357-393-421-180315-
/O.CON.KAMA.SV.W.0092.000000T0000Z-210518T0315Z/
Hutchinson TX-Hansford TX-Sherman TX-Roberts TX-Ochiltree TX-
955 PM CDT Mon May 17 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1015 PM CDT
FOR NORTHEASTERN HUTCHINSON...HANSFORD...NORTHEASTERN SHERMAN...
NORTHWESTERN ROBERTS AND SOUTHWESTERN OCHILTREE COUNTIES...

At 955 PM CDT, severe thunderstorms were located along a line
extending from 8 miles southeast of Wilburton to 7 miles southeast of
Goodwell to 4 miles west of Spearman, moving northeast at 45 mph.

HAZARD...60 mph wind gusts and nickel size hail.

SOURCE...Radar indicated.

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

Locations impacted include...
Spearman and Gruver. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3614 10103 3570 10099 3623 10164 3650 10165
      3650 10117
TIME...MOT...LOC 0255Z 204DEG 39KT 3698 10166 3649 10158 3617 10128 

HAIL...0.88IN
WIND...60MPH
 
$$

TLH

841 
WWUS54 KAMA 180316
SVSAMA

Severe Weather Statement
National Weather Service Amarillo TX
1016 PM CDT Mon May 17 2021

TXC195-233-357-393-421-180324-
/O.EXP.KAMA.SV.W.0092.000000T0000Z-210518T0315Z/
Hutchinson TX-Hansford TX-Sherman TX-Roberts TX-Ochiltree TX-
1016 PM CDT Mon May 17 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN HUTCHINSON...
HANSFORD...NORTHEASTERN SHERMAN...NORTHWESTERN ROBERTS AND
SOUTHWESTERN OCHILTREE COUNTIES WILL EXPIRE AT 1015 PM CDT...
            
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 will be allowed to expire.  However small 
hail, gusty winds, and heavy rain are still possible with these 
thunderstorms. Therefore, a Significant Weather Advisory is now in 
effect for Beaver, Texas, Lipscomb, eastern Hansford, Roberts, 
Hemphill, and Ochiltree Counties until 1115 PM CDT.

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

LAT...LON 3614 10103 3570 10099 3623 10164 3650 10165
      3650 10117
TIME...MOT...LOC 0314Z 204DEG 39KT 3714 10157 3665 10149 3633 10119 

$$

Ferguson

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, 9:52 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, 4:00 PM CDT	Severe Thunderstorm Warning	AMA	Deaf Smith, Oldham, Potter	90 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.