Alert archive / Texas / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 83, NWS Amarillo, TX

May 17, 2021Hartley County, Oldham County, Texas

NWS Amarillo, TX issued this severe thunderstorm warning at May 17, 2021, 6:42 PM CDT for Hartley County, Oldham County, Texas. It was in force for 93 min. 2 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 17, 2021, 6:42 PM CDT (23:42 UTC)
Expired: May 17, 2021, 8:15 PM CDT
In force: 93 min
Issued by: NWS Amarillo, TX
Area: Storm-based polygon
Tornado: Possible
Hail: 1.75 in
Wind: 70.0 mph

Counties Hartley County, TX, Oldham County, TX

The radar

The Amarillo radar (KAMA), 114 km from the middle of the area, began a volume at 23:43 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 17, 7:26 PM CDT	HAIL 1.5	Boys Ranch, TX
May 17, 7:36 PM CDT	HAIL 1.75	Boys Ranch, TX

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 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 12:00Z, 11.7 hours before the alert went out and 114 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: 1 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1522 m above ground
0-6 km bulk shear: 29 kt
0-1 km storm-relative helicity: -81 m²/s²
0-3 km storm-relative helicity: 24 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

423 
WUUS54 KAMA 172342
SVRAMA
TXC205-359-180115-
/O.NEW.KAMA.SV.W.0083.210517T2342Z-210518T0115Z/

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

The National Weather Service in Amarillo has issued a

* Severe Thunderstorm Warning for...
  Northern Oldham County in the Panhandle of Texas...
  Hartley County in the Panhandle of Texas...

* Until 815 PM CDT.

* At 641 PM CDT, a severe thunderstorm was located 17 miles east of
  Romero, or 25 miles east of Nara Visa, moving north at 20 mph.

  HAZARD...Golf ball size hail and 70 mph wind gusts.

  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...
  Dalhart, Hartley, Channing, Boys Ranch and Romero. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Remain alert for a possible tornado! Tornadoes can develop quickly
from severe thunderstorms. If you spot a tornado go at once into the
basement or small central room in a sturdy structure.

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

&&

LAT...LON 3605 10304 3605 10245 3550 10221 3533 10304
TIME...MOT...LOC 2341Z 159DEG 18KT 3563 10264 

TORNADO...POSSIBLE
HAIL...1.75IN
WIND...70MPH
 
$$

Guerrero

3 follow-up statements

488 
WWUS54 KAMA 180019
SVSAMA

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

TXC205-359-180115-
/O.CON.KAMA.SV.W.0083.000000T0000Z-210518T0115Z/
Oldham TX-Hartley TX-
719 PM CDT Mon May 17 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 815 PM CDT
FOR NORTHERN OLDHAM AND HARTLEY COUNTIES...

At 719 PM CDT, a severe thunderstorm was located near Boys Ranch, or
20 miles north of Vega, moving north at 30 mph.

HAZARD...Tennis ball size hail and 70 mph wind gusts.

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...
Dalhart, Hartley, Channing, Boys Ranch and Romero. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A tornado watch remains in effect for the warned area. Tornadoes can
develop quickly from severe thunderstorms. Although a tornado is not
immediately likely, if one is spotted act quickly and move to a place
of safety inside a sturdy structure, such as a basement or small
interior room.

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

&&

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

LAT...LON 3605 10304 3605 10245 3550 10221 3533 10304
TIME...MOT...LOC 0019Z 173DEG 27KT 3553 10230 

HAIL...2.50IN
WIND...70MPH
 
$$

TLH

478 
WWUS54 KAMA 180050
SVSAMA

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

TXC205-359-180115-
/O.CON.KAMA.SV.W.0083.000000T0000Z-210518T0115Z/
Oldham TX-Hartley TX-
750 PM CDT Mon May 17 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 815 PM CDT
FOR NORTHEASTERN OLDHAM AND CENTRAL HARTLEY COUNTIES...

At 750 PM CDT, severe thunderstorms were located along a line
extending from 5 miles northwest of Hartley to 4 miles west of Boys
Ranch, moving east at 35 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...
Dalhart, Hartley, Channing and Boys Ranch. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A tornado watch remains in effect for the warned area. Tornadoes can
develop quickly from severe thunderstorms. Although a tornado is not
immediately likely, if one is spotted act quickly and move to a place
of safety inside a sturdy structure, such as a basement or small
interior room.

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

&&

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

LAT...LON 3605 10285 3605 10245 3550 10221 3540 10272
TIME...MOT...LOC 0050Z 249DEG 31KT 3596 10244 3553 10233 

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

TLH

989 
WWUS54 KAMA 180051
SVSAMA

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

TXC205-359-180115-
/O.CON.KAMA.SV.W.0083.000000T0000Z-210518T0115Z/
Oldham TX-Hartley TX-
751 PM CDT Mon May 17 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 815 PM CDT
FOR NORTHEASTERN OLDHAM AND CENTRAL HARTLEY COUNTIES...

At 751 PM CDT, a severe thunderstorm was located over Channing, or 26
miles southwest of Dumas, moving north at 20 mph.

HAZARD...Golf ball size hail and 70 mph wind gusts.

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...
Dalhart, Hartley, Channing and Boys Ranch. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A tornado watch remains in effect for the warned area. Tornadoes can
develop quickly from severe thunderstorms. Although a tornado is not
immediately likely, if one is spotted act quickly and move to a place
of safety inside a sturdy structure, such as a basement or small
interior room.

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

&&

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

LAT...LON 3605 10245 3550 10221 3544 10250 3605 10278
TIME...MOT...LOC 0051Z 159DEG 18KT 3568 10237 

HAIL...1.75IN
WIND...70MPH
 
$$

Guerrero

The office that day

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

Issued	Product	Office	Counties	Lasted
May 16, 7:01 PM CDT	Severe Thunderstorm Warning	AMA	Deaf Smith, Oldham	14 min
May 16, 7:06 PM CDT	Severe Thunderstorm Warning	AMA	Carson, Potter	54 min
May 16, 7:15 PM CDT	Flash Flood Warning	AMA	Randall	5 hr
May 16, 7:20 PM CDT	Severe Thunderstorm Warning	AMA	Donley	55 min
May 16, 7:35 PM CDT	Severe Thunderstorm Warning	AMA	Armstrong, Randall	55 min
May 16, 7:44 PM CDT	Severe Thunderstorm Warning	AMA	Randall	61 min
May 16, 7:46 PM CDT	Severe Thunderstorm Warning	AMA	Carson, Potter	59 min
May 16, 7:58 PM CDT	Severe Thunderstorm Warning	AMA	Dallam, Hartley, Sherman	62 min
May 16, 8:13 PM CDT	Severe Thunderstorm Warning	AMA	Donley	62 min
May 16, 8:47 PM CDT	Severe Thunderstorm Warning	AMA	Carson, Oldham, Potter	43 min
May 16, 9:08 PM CDT	Areal Flood Advisory	AMA	Donley	3 hr
May 16, 9:19 PM CDT	Severe Thunderstorm Warning	AMA	Sherman	41 min
May 16, 11:37 PM CDT	Special Weather Statement	AMA	Oldham	23 min
May 16, 11:40 PM CDT	Areal Flood Advisory	AMA	Potter, Randall	3 hr
May 17, 12:06 AM CDT	Special Weather Statement	AMA	Potter	24 min
May 17, 12:12 AM CDT	Special Weather Statement	AMA	Oldham	33 min
May 17, 12:16 AM CDT	Areal Flood Advisory	AMA	Randall	3 hr
May 17, 12:35 AM CDT	Special Weather Statement	AMA	Randall	25 min
May 17, 12:45 AM CDT	Special Weather Statement	AMA	Potter	30 min
May 17, 12:46 AM CDT	Special Weather Statement	AMA	Potter	29 min
May 17, 1:02 AM CDT	Special Weather Statement	AMA	Randall	28 min
May 17, 2:58 PM CDT	Flash Flood Watch	AMA	Armstrong, Carson, Collingsworth, Deaf Smith, Donley, Gray and 4 more	7 hr
May 17, 4:47 PM CDT	Special Weather Statement	AMA	Oldham	43 min
May 17, 5:16 PM CDT	Severe Thunderstorm Warning	AMA	Ochiltree, Roberts	59 min
May 17, 5:48 PM CDT	Special Weather Statement	AMA	Hartley, Oldham	57 min
May 17, 5:50 PM CDT	Severe Thunderstorm Warning	AMA	Hartley, Oldham	55 min
May 17, 6:14 PM CDT	Severe Thunderstorm Warning	AMA	Roberts	41 min
May 17, 6:28 PM CDT	Severe Thunderstorm Warning	AMA	Deaf Smith, Randall	62 min
May 17, 6:33 PM CDT	Tornado Warning	AMA	Hartley, Oldham	19 min
May 17, 6:54 PM CDT	Severe Thunderstorm Warning	AMA	Armstrong, Randall	66 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.