Alert archive / Texas / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 264, NWS Amarillo, TX
NWS Amarillo, TX issued this severe thunderstorm warning at Aug 21, 2021, 5:14 PM CDT for 4 counties in Texas. It was in force for 91 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
- Aug 21, 2021, 5:14 PM CDT (22:14 UTC)
- Expired
- Aug 21, 2021, 6:45 PM CDT
- In force
- 91 min
- Issued by
- NWS Amarillo, TX
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Armstrong County, TX, Carson County, TX, Potter County, TX, Randall County, TX
The radar
The Amarillo radar (KAMA), 24 km from the middle of the area, began a volume at 22:14 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 nearest sounding before it
Amarillo Airport, TX (KAMA), launched 12:00Z, 10.2 hours before the alert went out and 23 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.
237
WUUS54 KAMA 212214
SVRAMA
TXC011-065-375-381-212345-
/O.NEW.KAMA.SV.W.0264.210821T2214Z-210821T2345Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Amarillo TX
514 PM CDT Sat Aug 21 2021
The National Weather Service in Amarillo has issued a
* Severe Thunderstorm Warning for...
Armstrong County in the Panhandle of Texas...
Randall County in the Panhandle of Texas...
Southwestern Carson County in the Panhandle of Texas...
Southeastern Potter County in the Panhandle of Texas...
* Until 645 PM CDT.
* At 514 PM CDT, a severe thunderstorm was located 6 miles south of
Washburn, or 13 miles west of Claude, moving northeast at 15 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, Panhandle, Claude, Lake Tanglewood, Mescalero
Park, Wayside, Washburn, Palo Duro Canyon, 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 3490 10212 3534 10174 3536 10135 3516 10109
3475 10148 3475 10172
TIME...MOT...LOC 2214Z 245DEG 13KT 3508 10159
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
LG4 follow-up statements
154
WWUS54 KAMA 212233
SVSAMA
Severe Weather Statement
National Weather Service Amarillo TX
533 PM CDT Sat Aug 21 2021
TXC011-065-375-381-212345-
/O.CON.KAMA.SV.W.0264.000000T0000Z-210821T2345Z/
Armstrong TX-Randall TX-Carson TX-Potter TX-
533 PM CDT Sat Aug 21 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 645 PM CDT
FOR ARMSTRONG...RANDALL...SOUTHWESTERN CARSON AND SOUTHEASTERN POTTER
COUNTIES...
At 533 PM CDT, a severe thunderstorm was located 7 miles north of
Palo Duro Canyon, or 15 miles west of Claude, moving northeast at 20
mph.
HAZARD...60 mph wind gusts and nickel size hail.
SOURCE...Radar indicated.
IMPACT...Minor damage to roofs, siding, and trees is possible.
Locations impacted include...
Amarillo, Canyon, Panhandle, Claude, Lake Tanglewood, Mescalero Park,
Wayside, Washburn, Palo Duro Canyon, Timbercreek Canyon and Pantex.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 3490 10212 3534 10174 3536 10135 3516 10109
3475 10148 3475 10172
TIME...MOT...LOC 2233Z 240DEG 16KT 3505 10162
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.88IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
LG582
WWUS54 KAMA 212257
SVSAMA
Severe Weather Statement
National Weather Service Amarillo TX
557 PM CDT Sat Aug 21 2021
TXC065-375-212306-
/O.CAN.KAMA.SV.W.0264.000000T0000Z-210821T2345Z/
Carson TX-Potter TX-
557 PM CDT Sat Aug 21 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN CARSON AND
SOUTHEASTERN POTTER 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 3490 10212 3518 10187 3518 10175 3516 10157
3486 10141 3475 10148 3475 10172
TIME...MOT...LOC 2256Z 220DEG 10KT 3503 10164
$$
TXC011-381-212345-
/O.CON.KAMA.SV.W.0264.000000T0000Z-210821T2345Z/
Armstrong TX-Randall TX-
557 PM CDT Sat Aug 21 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 645 PM CDT
FOR WESTERN ARMSTRONG AND RANDALL COUNTIES...
At 556 PM CDT, a severe thunderstorm was located 6 miles north of
Palo Duro Canyon, or 15 miles east of Canyon, moving northeast at 10
mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Minor damage to roofs, siding, and trees is possible.
Locations impacted include...
Amarillo, Canyon, Lake Tanglewood, Mescalero Park, Wayside, Palo Duro
Canyon and Timbercreek Canyon.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 3490 10212 3518 10187 3518 10175 3516 10157
3486 10141 3475 10148 3475 10172
TIME...MOT...LOC 2256Z 220DEG 10KT 3503 10164
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
LG156
WWUS54 KAMA 212310
SVSAMA
Severe Weather Statement
National Weather Service Amarillo TX
610 PM CDT Sat Aug 21 2021
TXC011-381-212345-
/O.CON.KAMA.SV.W.0264.000000T0000Z-210821T2345Z/
Armstrong TX-Randall TX-
610 PM CDT Sat Aug 21 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 645 PM CDT
FOR WESTERN ARMSTRONG AND RANDALL COUNTIES...
At 610 PM CDT, a severe thunderstorm was located over Canyon, moving
northeast at 15 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, Wayside, Palo Duro
Canyon 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 3490 10212 3518 10187 3518 10175 3516 10157
3486 10141 3475 10148 3475 10172
TIME...MOT...LOC 2310Z 240DEG 14KT 3495 10190
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
LG103
WWUS54 KAMA 212341 RRA
SVSAMA
Severe Weather Statement
National Weather Service Amarillo TX
641 PM CDT Sat Aug 21 2021
TXC011-381-212351-
/O.EXP.KAMA.SV.W.0264.000000T0000Z-210821T2345Z/
Armstrong TX-Randall TX-
641 PM CDT Sat Aug 21 2021
...THE SEVERE THUNDERSTORM WARNING FOR WESTERN ARMSTRONG AND RANDALL
COUNTIES WILL EXPIRE AT 645 PM CDT...
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning will be allowed to expire. However gusty
winds are still possible with this thunderstorm.
LAT...LON 3490 10212 3518 10187 3518 10175 3516 10157
3486 10141 3475 10148 3475 10172
TIME...MOT...LOC 2341Z 245DEG 13KT 3499 10179
$$
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, 3:42 PM CDT | Severe Thunderstorm Warning | AMA | Armstrong, Carson, Potter, Randall | 69 min |
| 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, 5:20 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.