Alert archive / Texas / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 261, NWS Amarillo, TX
NWS Amarillo, TX issued this severe thunderstorm warning at Aug 21, 2021, 3:42 PM CDT for 4 counties in Texas. It was in force for 69 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
- Aug 21, 2021, 3:42 PM CDT (20:42 UTC)
- Expired
- Aug 21, 2021, 4:51 PM CDT
- In force
- 69 min
- Issued by
- NWS Amarillo, TX
- Area
- Storm-based polygon
- Hail
- 1.25 in
- Wind
- 60.0 mph
Counties Armstrong County, TX, Carson County, TX, Potter County, TX, Randall County, TX
The radar
The Amarillo radar (KAMA), 20 km from the middle of the area, began a volume at 20:46 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 |
|---|---|---|---|
| Aug 21, 3:44 PM CDT | HAIL 1.25 | 8 Se Bushland, TX | TRAINED SPOTTER REPORTS UP TO HALF DOLLAR SIZED HAIL. |
| Aug 21, 3:50 PM CDT | HAIL 1 | 6 Wsw Amarillo, TX | TRAINED SPOTTER REPORTS NICKEL TO QUARTER SIZED HAIL. |
| Aug 21, 3:55 PM CDT | TSTM WND DMG | 4 W Amarillo, TX | REPORTS OF WIDESPREAD TREE DAMAGE NEAR AVONDALE ELEMENTARY AND AT LEAST ONE LARGE TREE WAS COMPLETELY UPROOTED. |
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, 8.7 hours before the alert went out and 21 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.
- Mixed-layer CAPE
- 611 J/kg
- Mixed-layer CIN
- -143 J/kg
- Mixed-layer LCL
- 1642 m above ground
- 0-6 km bulk shear
- 9 kt
- 0-1 km storm-relative helicity
- 16 m²/s²
- 0-3 km storm-relative helicity
- 76 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
630
WUUS54 KAMA 212042
SVRAMA
TXC011-065-375-381-212215-
/O.NEW.KAMA.SV.W.0261.210821T2042Z-210821T2215Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Amarillo TX
342 PM CDT Sat Aug 21 2021
The National Weather Service in Amarillo has issued a
* Severe Thunderstorm Warning for...
Northwestern Armstrong County in the Panhandle of Texas...
Northern Randall County in the Panhandle of Texas...
Southwestern Carson County in the Panhandle of Texas...
Southern Potter County in the Panhandle of Texas...
* Until 515 PM CDT.
* At 342 PM CDT, a severe thunderstorm was located 4 miles northwest
of Mescalero Park, or 8 miles north of Canyon, moving northeast at
15 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...
Amarillo, Canyon, Lake Tanglewood, Mescalero Park, Bushland,
Washburn, Timbercreek Canyon and Pantex.
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 3501 10217 3512 10217 3543 10203 3548 10153
3525 10143 3492 10193
TIME...MOT...LOC 2042Z 233DEG 14KT 3511 10196
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.25 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
LG6 follow-up statements
274
WWUS54 KAMA 212046
SVSAMA
Severe Weather Statement
National Weather Service Amarillo TX
346 PM CDT Sat Aug 21 2021
TXC011-065-375-381-212215-
/O.CON.KAMA.SV.W.0261.000000T0000Z-210821T2215Z/
Armstrong TX-Randall TX-Carson TX-Potter TX-
346 PM CDT Sat Aug 21 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 515 PM CDT
FOR NORTHWESTERN ARMSTRONG...NORTHERN RANDALL...SOUTHWESTERN CARSON
AND SOUTHERN POTTER COUNTIES...
At 346 PM CDT, a severe thunderstorm was located 4 miles north of
Mescalero Park, or 7 miles southwest of Amarillo, moving northeast at
15 mph.
HAZARD...60 mph wind gusts and half dollar size hail.
SOURCE...Trained weather spotters.
IMPACT...Minor damage to roofs, siding, and trees is possible. Hail
damage to vehicles is expected.
Locations impacted include...
Amarillo, Canyon, Lake Tanglewood, Mescalero Park, Bushland,
Washburn, Timbercreek Canyon and Pantex.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 3501 10217 3512 10217 3543 10203 3548 10153
3525 10143 3492 10193
TIME...MOT...LOC 2046Z 232DEG 13KT 3512 10193
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.25 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
LG000
WWUS54 KAMA 212054
SVSAMA
Severe Weather Statement
National Weather Service Amarillo TX
354 PM CDT Sat Aug 21 2021
TXC011-065-375-381-212215-
/O.CON.KAMA.SV.W.0261.000000T0000Z-210821T2215Z/
Armstrong TX-Randall TX-Carson TX-Potter TX-
354 PM CDT Sat Aug 21 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 515 PM CDT
FOR NORTHWESTERN ARMSTRONG...NORTHERN RANDALL...SOUTHWESTERN CARSON
AND SOUTHERN POTTER COUNTIES...
At 353 PM CDT, a severe thunderstorm was located 5 miles southwest of
Amarillo, moving northeast at 15 mph.
HAZARD...70 mph wind gusts and quarter size hail.
SOURCE...Trained weather spotters.
IMPACT...Expect some tree damage. Damage is likely to mobile homes,
roofs, and outbuildings. Hail damage to vehicles is
expected.
Locations impacted include...
Amarillo, Canyon, Lake Tanglewood, Mescalero Park, Bushland,
Washburn, Timbercreek Canyon and Pantex.
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 3501 10217 3512 10217 3543 10203 3548 10153
3525 10143 3492 10193
TIME...MOT...LOC 2053Z 227DEG 12KT 3515 10191
THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...70 MPH
$$
LG392
WWUS54 KAMA 212103
SVSAMA
Severe Weather Statement
National Weather Service Amarillo TX
403 PM CDT Sat Aug 21 2021
TXC011-065-375-381-212215-
/O.CON.KAMA.SV.W.0261.000000T0000Z-210821T2215Z/
Armstrong TX-Randall TX-Carson TX-Potter TX-
403 PM CDT Sat Aug 21 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 515 PM CDT
FOR NORTHWESTERN ARMSTRONG...NORTHERN RANDALL...SOUTHWESTERN CARSON
AND SOUTHERN POTTER COUNTIES...
At 403 PM CDT, a severe thunderstorm was located 5 miles southwest of
Amarillo, moving northeast at 10 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Minor damage to roofs, siding, and trees is possible. Hail
damage to vehicles is expected.
Locations impacted include...
Amarillo, Canyon, Lake Tanglewood, Mescalero Park, Bushland,
Washburn, Timbercreek Canyon and Pantex.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 3501 10217 3512 10217 3543 10203 3548 10153
3525 10143 3492 10193
TIME...MOT...LOC 2103Z 231DEG 9KT 3514 10191
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
LG419
WWUS54 KAMA 212111
SVSAMA
Severe Weather Statement
National Weather Service Amarillo TX
411 PM CDT Sat Aug 21 2021
TXC011-065-375-381-212215-
/O.CON.KAMA.SV.W.0261.000000T0000Z-210821T2215Z/
Armstrong TX-Randall TX-Carson TX-Potter TX-
411 PM CDT Sat Aug 21 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 515 PM CDT
FOR NORTHWESTERN ARMSTRONG...NORTHERN RANDALL...SOUTHWESTERN CARSON
AND SOUTHEASTERN POTTER COUNTIES...
At 410 PM CDT, a severe thunderstorm was located near Amarillo,
moving northeast at 15 mph.
HAZARD...60 mph wind gusts and penny size hail.
SOURCE...Radar indicated.
IMPACT...Minor damage to roofs, siding, and trees is possible.
Locations impacted include...
Amarillo, Canyon, Lake Tanglewood, Mescalero Park, Bushland,
Washburn, Timbercreek Canyon and Pantex.
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 3501 10217 3512 10217 3537 10197 3548 10153
3525 10143 3492 10193
TIME...MOT...LOC 2110Z 233DEG 14KT 3516 10188
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.75IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
LG810
WWUS54 KAMA 212129
SVSAMA
Severe Weather Statement
National Weather Service Amarillo TX
429 PM CDT Sat Aug 21 2021
TXC011-065-212138-
/O.CAN.KAMA.SV.W.0261.000000T0000Z-210821T2215Z/
Armstrong TX-Carson TX-
429 PM CDT Sat Aug 21 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN ARMSTRONG AND
SOUTHWESTERN CARSON COUNTIES IS CANCELLED...
The severe thunderstorm which prompted the warning has moved out of
the warned area. Therefore, the warning has been cancelled.
LAT...LON 3501 10217 3512 10217 3527 10200 3521 10190
3509 10176 3492 10193
TIME...MOT...LOC 2128Z 205DEG 5KT 3500 10212
$$
TXC375-381-212215-
/O.CON.KAMA.SV.W.0261.000000T0000Z-210821T2215Z/
Randall TX-Potter TX-
429 PM CDT Sat Aug 21 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 515 PM CDT
FOR NORTHWESTERN RANDALL AND SOUTH CENTRAL POTTER COUNTIES...
At 428 PM CDT, a severe thunderstorm was located near Umbarger, or 11
miles west of Canyon, moving northeast at 5 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Minor damage to roofs, siding, and trees is possible.
Locations impacted include...
Amarillo, Canyon, Mescalero Park, Bushland and Timbercreek Canyon.
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 3501 10217 3512 10217 3527 10200 3521 10190
3509 10176 3492 10193
TIME...MOT...LOC 2128Z 205DEG 5KT 3500 10212
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
LG257
WWUS54 KAMA 212151
SVSAMA
Severe Weather Statement
National Weather Service Amarillo TX
451 PM CDT Sat Aug 21 2021
TXC375-381-212201-
/O.CAN.KAMA.SV.W.0261.000000T0000Z-210821T2215Z/
Randall TX-Potter TX-
451 PM CDT Sat Aug 21 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN RANDALL AND SOUTH
CENTRAL POTTER COUNTIES IS CANCELLED...
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning has been cancelled. However gusty winds are
still possible with this thunderstorm.
LAT...LON 3501 10217 3512 10217 3527 10200 3521 10190
3509 10176 3492 10193
TIME...MOT...LOC 2147Z 233DEG 14KT 3506 10203
$$
LGThe office that day
Everything else NWS Amarillo, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 21, 2:38 PM CDT | Special Weather Statement | AMA | Hemphill | 67 min |
| Aug 21, 2:43 PM CDT | Special Weather Statement | AMA | Potter | 62 min |
| Aug 21, 2:57 PM CDT | Severe Thunderstorm Warning | AMA | Hemphill, Lipscomb, Ochiltree, Roberts | 93 min |
| Aug 21, 3:32 PM CDT | Severe Thunderstorm Warning | AMA | Carson, Hutchinson, Moore, Potter | 88 min |
| Aug 21, 3:42 PM CDT | Areal Flood Advisory | AMA | Hemphill | 3 hr |
| Aug 21, 3:54 PM CDT | Areal Flood Advisory | AMA | Potter, Randall | 10 min |
| Aug 21, 4:04 PM CDT | Flash Flood Warning | AMA | Potter, Randall | 90 min |
| Aug 21, 4:15 PM CDT | Severe Thunderstorm Warning | AMA | Lipscomb, Ochiltree | 90 min |
| Aug 21, 4:33 PM CDT | Severe Thunderstorm Warning | AMA | Hansford, Hutchinson, Ochiltree, Roberts | 70 min |
| Aug 21, 4:44 PM CDT | Special Weather Statement | AMA | Sherman | 61 min |
| Aug 21, 5:14 PM CDT | Severe Thunderstorm Warning | AMA | Armstrong, Carson, Potter, Randall | 91 min |
| Aug 21, 5:20 PM CDT | Severe Thunderstorm Warning | AMA | Hansford, Ochiltree, Sherman | 85 min |
| Aug 21, 6:18 PM CDT | Areal Flood Advisory | AMA | Armstrong, Randall | 85 min |
| Aug 21, 6:18 PM CDT | Special Weather Statement | AMA | Hemphill | 27 min |
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.