Alert archive / Texas / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 192, NWS Amarillo, TX

July 4, 2021Deaf Smith County, Oldham County, Texas

NWS Amarillo, TX issued this severe thunderstorm warning at Jul 4, 2021, 7:52 PM CDT for Deaf Smith County, Oldham County, Texas. It was in force for 83 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
Jul 4, 2021, 7:52 PM CDT (00:52 UTC)
Expired
Jul 4, 2021, 9:15 PM CDT
In force
83 min
Issued by
NWS Amarillo, TX
Area
Storm-based polygon
Hail
1.75 in
Wind
60.0 mph

Counties Deaf Smith County, TX, Oldham County, TX

The radar

The Cannon AFB radar (KFDX), 91 km from the middle of the area, began a volume at 00:56 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

TimeReportWhereRemark
Jul 4, 7:56 PM CDTTSTM WND GST 626 Wsw Adrian, TXMESONET STATION 109 ADRIAN 6WSW.
Jul 4, 8:10 PM CDTHAIL 1.251 Wsw Adrian, TXQUARTER TO HALF DOLLAR SIZE HAIL.

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.

IssuedProductOfficeLasted
Jul 4, 3:37 PM CDTSevere Thunderstorm WatchSPC7 hr

The nearest sounding before it

Amarillo Airport, TX (KAMA), launched 00:00Z, 0.9 hours before the alert went out and 100 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-pSkew-T log-p diagram, Amarillo Airport, TX at 00:00Z on 2021-07-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2304 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Amarillo Airport, TX at 00:00Z on 2021-07-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 26 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
2304 J/kg
Mixed-layer CIN
-21 J/kg
Mixed-layer LCL
1243 m above ground
0-6 km bulk shear
31 kt
0-1 km storm-relative helicity
26 m²/s²
0-3 km storm-relative helicity
146 m²/s²
Significant tornado parameter
1.2
Supercell composite
7.9

Open this sounding in Storm Lab

The text

As transmitted.

964 
WUUS54 KAMA 050052
SVRAMA
TXC117-359-050215-
/O.NEW.KAMA.SV.W.0192.210705T0052Z-210705T0215Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Amarillo TX
752 PM CDT Sun Jul 4 2021

The National Weather Service in Amarillo has issued a

* Severe Thunderstorm Warning for...
  Southwestern Oldham County in the Panhandle of Texas...
  Deaf Smith County in the Panhandle of Texas...

* Until 915 PM CDT.

* At 752 PM CDT, a severe thunderstorm was located 10 miles northeast
  of Glenrio, or 24 miles west of Vega, moving south at 30 mph.

  HAZARD...Golf 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.

* Locations impacted include...
  Vega, Adrian, Glenrio, Bootleg and Simms. 

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 3532 10304 3526 10234 3475 10246 3475 10304
TIME...MOT...LOC 0052Z 011DEG 28KT 3526 10286 

HAIL...1.75IN
WIND...60MPH
 
$$

LG
3 follow-up statements
119 
WWUS54 KAMA 050116
SVSAMA

Severe Weather Statement
National Weather Service Amarillo TX
816 PM CDT Sun Jul 4 2021

TXC117-359-050215-
/O.CON.KAMA.SV.W.0192.000000T0000Z-210705T0215Z/
Oldham TX-Deaf Smith TX-
816 PM CDT Sun Jul 4 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 915 PM CDT
FOR SOUTHWESTERN OLDHAM AND DEAF SMITH COUNTIES...

At 816 PM CDT, a severe thunderstorm was located 12 miles southeast
of Glenrio, or 28 miles north of Friona, moving south at 45 mph.

HAZARD...Golf 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.

Locations impacted include...
Vega, Glenrio, Bootleg and Simms. 

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 3527 10304 3526 10234 3475 10246 3475 10304
TIME...MOT...LOC 0116Z 010DEG 37KT 3502 10291 

HAIL...1.75IN
WIND...60MPH
 
$$

LG
015 
WWUS54 KAMA 050128
SVSAMA

Severe Weather Statement
National Weather Service Amarillo TX
828 PM CDT Sun Jul 4 2021

TXC117-359-050215-
/O.CON.KAMA.SV.W.0192.000000T0000Z-210705T0215Z/
Oldham TX-Deaf Smith TX-
828 PM CDT Sun Jul 4 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 915 PM CDT
FOR SOUTHWESTERN OLDHAM AND DEAF SMITH COUNTIES...

At 828 PM CDT, a severe thunderstorm was located 11 miles northeast
of Bellview, or 24 miles northwest of Friona, moving south at 40 mph.

HAZARD...Golf 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.

Locations impacted include...
Glenrio, Simms and Bootleg. 

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 3527 10304 3520 10235 3475 10246 3475 10304
TIME...MOT...LOC 0128Z 014DEG 35KT 3493 10297 

HAIL...1.75IN
WIND...60MPH
 
$$

LG
210 
WWUS54 KAMA 050146
SVSAMA

Severe Weather Statement
National Weather Service Amarillo TX
846 PM CDT Sun Jul 4 2021

TXC359-050156-
/O.CAN.KAMA.SV.W.0192.000000T0000Z-210705T0215Z/
Oldham TX-
846 PM CDT Sun Jul 4 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN OLDHAM COUNTY IS
CANCELLED...
    
The severe thunderstorm which prompted the warning has 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 Texas.

LAT...LON 3512 10304 3509 10246 3475 10266 3475 10304
TIME...MOT...LOC 0146Z 022DEG 31KT 3483 10306 

$$

TXC117-050215-
/O.CON.KAMA.SV.W.0192.000000T0000Z-210705T0215Z/
Deaf Smith TX-
846 PM CDT Sun Jul 4 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 915 PM CDT
FOR WESTERN DEAF SMITH COUNTY...

At 846 PM CDT, a severe thunderstorm was located over Bellview, or 23
miles northwest of Friona, moving south at 35 mph.

HAZARD...Golf 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.

Locations impacted include...
Simms and Bootleg. 

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 3512 10304 3509 10246 3475 10266 3475 10304
TIME...MOT...LOC 0146Z 022DEG 31KT 3483 10306 

HAIL...1.75IN
WIND...60MPH
 
$$

LG

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 4, 7:06 PM CDTSevere Thunderstorm WarningAMAHartley, Oldham84 min
Jul 4, 7:31 PM CDTSevere Thunderstorm WarningAMADallam89 min
Jul 4, 7:42 PM CDTSevere Thunderstorm WarningAMADallam, Hansford, Sherman93 min
Jul 4, 7:43 PM CDTAreal Flood AdvisoryAMADeaf Smith, Oldham90 min
Jul 4, 9:00 PM CDTSevere Thunderstorm WarningAMADallam50 min
Jul 4, 9:00 PM CDTSevere Thunderstorm WarningAMAHartley, Moore, Sherman60 min
Jul 4, 9:52 PM CDTAreal Flood AdvisoryAMADallam, Hartley53 min
Jul 4, 10:28 PM CDTSpecial Weather StatementAMAOldham62 min
Jul 4, 10:40 PM CDTSevere Thunderstorm WarningAMAHartley, Oldham65 min
Jul 4, 11:05 PM CDTSevere Thunderstorm WarningAMADeaf Smith, Oldham, Potter, Randall55 min
Jul 4, 11:28 PM CDTSpecial Weather StatementAMADeaf Smith47 min
Jul 4, 11:36 PM CDTSpecial Weather StatementAMAGray24 min
Jul 4, 11:39 PM CDTSpecial Weather StatementAMARandall36 min
Jul 5, 12:01 AM CDTSevere Thunderstorm WarningAMAArmstrong, Carson, Donley, Gray59 min
Jul 5, 12:35 AM CDTSpecial Weather StatementAMAGray25 min
Jul 5, 12:59 AM CDTSevere Thunderstorm WarningAMAArmstrong, Carson61 min
Jul 5, 1:31 AM CDTSevere Thunderstorm WarningAMAArmstrong, Carson, Potter, Randall74 min
Jul 5, 2:34 AM CDTFlash Flood WarningAMARandall112 min
Jul 5, 2:43 AM CDTSpecial Weather StatementAMARandall47 min
Jul 5, 2:57 AM CDTAreal Flood AdvisoryAMADonley3 hr
Jul 5, 6:38 AM CDTAreal Flood AdvisoryAMACollingsworth, Wheeler3 hr

Nearby

Severe Thunderstorm Warnings in Texas, 2021Every 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.