Alert archive / Texas / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 21, NWS Amarillo, TX

April 17, 2019Deaf Smith County, Oldham County, Texas

NWS Amarillo, TX issued this severe thunderstorm warning at Apr 17, 2019, 3:00 PM CDT for Deaf Smith County, Oldham County, Texas. It was in force for 40 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: Apr 17, 2019, 3:00 PM CDT (20:00 UTC)
Expired: Apr 17, 2019, 3:40 PM CDT
In force: 40 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

The radar

The Amarillo radar (KAMA), 91 km from the middle of the area, began a volume at 20:00 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
Apr 17, 3:17 PM CDT	HAIL 1	1 Wsw Simms, TX	ACCUMULATING HAIL REPORTED JUST WEST OF SIMMS.

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, 8.0 hours before the alert went out and 91 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: 2860 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: 18 m²/s²
0-3 km storm-relative helicity: 33 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

610 
WUUS54 KAMA 172000
SVRAMA
TXC117-359-172115-
/O.NEW.KAMA.SV.W.0021.190417T2000Z-190417T2115Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Amarillo TX
300 PM CDT Wed Apr 17 2019

The National Weather Service in Amarillo has issued a

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

* Until 415 PM CDT.

* At 300 PM CDT, a severe thunderstorm was located over Simms, or 18
  miles southwest of Vega, moving northwest at 10 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...
  Simms.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3509 10252 3489 10266 3499 10298 3531 10275
TIME...MOT...LOC 2000Z 121DEG 10KT 3506 10267 

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

Beat

2 follow-up statements

561 
WWUS54 KAMA 172019
SVSAMA

Severe Weather Statement
National Weather Service Amarillo TX
319 PM CDT Wed Apr 17 2019

TXC117-359-172115-
/O.CON.KAMA.SV.W.0021.000000T0000Z-190417T2115Z/
Oldham TX-Deaf Smith TX-
319 PM CDT Wed Apr 17 2019

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 415 PM CDT
FOR SOUTH CENTRAL OLDHAM AND NORTHWESTERN DEAF SMITH COUNTIES...

At 319 PM CDT, a severe thunderstorm was located 5 miles northwest of
Simms, or 20 miles southwest of Vega, moving northwest at 10 mph.

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

SOURCE...Emergency management reported quarter size hail west of 
         Simms.

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

Locations impacted include...
Simms.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3511 10255 3490 10270 3499 10298 3531 10275
TIME...MOT...LOC 2019Z 121DEG 10KT 3509 10273 

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

Beat

692 
WWUS54 KAMA 172040
SVSAMA

Severe Weather Statement
National Weather Service Amarillo TX
340 PM CDT Wed Apr 17 2019

TXC117-359-172050-
/O.CAN.KAMA.SV.W.0021.000000T0000Z-190417T2115Z/
Oldham TX-Deaf Smith TX-
340 PM CDT Wed Apr 17 2019

...THE SEVERE THUNDERSTORM WARNING FOR SOUTH CENTRAL OLDHAM AND
NORTHWESTERN DEAF SMITH COUNTIES IS CANCELLED...
        
The storm which prompted the warning has weakened below severe 
limits. Therefore, the warning has been cancelled.  However heavy 
rain is still possible with this thunderstorm.

LAT...LON 3511 10255 3490 10270 3499 10298 3531 10275
TIME...MOT...LOC 2039Z 121DEG 10KT 3512 10279 

$$

Beat

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 17, 1:02 PM CDT	Special Weather Statement	AMA	Armstrong	28 min
Apr 17, 1:10 PM CDT	Severe Thunderstorm Warning	AMA	Armstrong, Donley	56 min
Apr 17, 1:45 PM CDT	Special Weather Statement	AMA	Donley	30 min
Apr 17, 1:55 PM CDT	Severe Thunderstorm Warning	AMA	Donley	65 min
Apr 17, 2:13 PM CDT	Special Weather Statement	AMA	Gray	32 min
Apr 17, 2:15 PM CDT	Severe Thunderstorm Warning	AMA	Donley, Gray	40 min
Apr 17, 2:22 PM CDT	Areal Flood Advisory	AMA	Donley, Gray	3 hr
Apr 17, 2:36 PM CDT	Severe Thunderstorm Warning	AMA	Collingsworth, Donley, Gray, Wheeler	69 min
Apr 17, 2:44 PM CDT	Special Weather Statement	AMA	Oldham	31 min
Apr 17, 2:56 PM CDT	Special Weather Statement	AMA	Deaf Smith	34 min
Apr 17, 3:04 PM CDT	Severe Thunderstorm Warning	AMA	Wheeler	71 min
Apr 17, 3:08 PM CDT	Special Weather Statement	AMA	Deaf Smith	37 min
Apr 17, 3:08 PM CDT	Severe Thunderstorm Warning	AMA	Armstrong, Donley	82 min
Apr 17, 3:18 PM CDT	Severe Thunderstorm Warning	AMA	Hemphill, Lipscomb	72 min
Apr 17, 3:45 PM CDT	Severe Thunderstorm Warning	AMA	Collingsworth, Gray, Wheeler	60 min
Apr 17, 3:46 PM CDT	Severe Thunderstorm Warning	AMA	Hansford, Hutchinson, Ochiltree, Roberts	74 min
Apr 17, 3:54 PM CDT	Tornado Warning Tornado observed	AMA	Hemphill	24 min
Apr 17, 4:11 PM CDT	Tornado Warning Tornado observed	AMA	Hemphill, Lipscomb	49 min
Apr 17, 4:16 PM CDT	Severe Thunderstorm Warning	AMA	Collingsworth, Donley, Gray, Wheeler	59 min
Apr 17, 4:36 PM CDT	Special Weather Statement	AMA	Deaf Smith	54 min
Apr 17, 4:46 PM CDT	Severe Thunderstorm Warning	AMA	Deaf Smith, Randall	59 min
Apr 17, 4:51 PM CDT	Severe Thunderstorm Warning	AMA	Lipscomb	32 min
Apr 17, 5:05 PM CDT	Severe Thunderstorm Warning	AMA	Armstrong, Carson, Potter, Randall	55 min
Apr 17, 5:16 PM CDT	Areal Flood Advisory	AMA	Carson, Potter	3 hr
Apr 17, 5:17 PM CDT	Severe Thunderstorm Warning	AMA	Collingsworth, Wheeler	35 min
Apr 17, 5:20 PM CDT	Tornado Warning	AMA	Carson	16 min
Apr 17, 5:21 PM CDT	Severe Thunderstorm Warning	AMA	Carson, Gray, Roberts	42 min
Apr 17, 5:28 PM CDT	Severe Thunderstorm Warning	AMA	Armstrong, Deaf Smith, Randall	35 min
Apr 17, 5:49 PM CDT	Severe Thunderstorm Warning	AMA	Armstrong, Carson, Donley, Gray	39 min
Apr 17, 5:53 PM CDT	Severe Thunderstorm Warning	AMA	Armstrong, Carson, Potter, Randall	33 min
Apr 17, 6:06 PM CDT	Areal Flood Advisory	AMA	Deaf Smith, Randall	3 hr
Apr 17, 6:41 PM CDT	Special Weather Statement	AMA	Potter	49 min

Nearby

Severe Thunderstorm Warnings in Texas, 2019 Every severe thunderstorm warning in 2019

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.