Alert archive / Texas / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 231, NWS Amarillo, TX
NWS Amarillo, TX issued this severe thunderstorm warning at Jul 31, 2021, 6:54 PM CDT for Potter County, Randall County, Texas. It was in force for 51 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
- Jul 31, 2021, 6:54 PM CDT (23:54 UTC)
- Expired
- Jul 31, 2021, 7:45 PM CDT
- In force
- 51 min
- Issued by
- NWS Amarillo, TX
- Area
- Storm-based polygon
- Hail
- 0.88 in
- Wind
- 60.0 mph
Counties Potter County, TX, Randall County, TX
The radar
The Amarillo radar (KAMA), 36 km from the middle of the area, began a volume at 23:57 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, 11.9 hours before the alert went out and 36 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
- 387 J/kg
- Mixed-layer CIN
- -124 J/kg
- Mixed-layer LCL
- 1831 m above ground
- 0-6 km bulk shear
- 5 kt
- 0-1 km storm-relative helicity
- -1 m²/s²
- 0-3 km storm-relative helicity
- 38 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
784
WUUS54 KAMA 312354
SVRAMA
TXC375-381-010045-
/O.NEW.KAMA.SV.W.0231.210731T2354Z-210801T0045Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Amarillo TX
654 PM CDT Sat Jul 31 2021
The National Weather Service in Amarillo has issued a
* Severe Thunderstorm Warning for...
Northwestern Randall County in the Panhandle of Texas...
Southwestern Potter County in the Panhandle of Texas...
* Until 745 PM CDT.
* At 654 PM CDT, a severe thunderstorm was located 7 miles west of
Mescalero Park, or 9 miles northwest of Canyon, moving south at 15
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, Umbarger, Mescalero Park and Bushland.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3507 10217 3529 10216 3528 10187 3495 10186
3493 10216
TIME...MOT...LOC 2354Z 359DEG 15KT 3508 10204
HAIL...0.88IN
WIND...60MPH
$$
LFM2 follow-up statements
282
WWUS54 KAMA 010020
SVSAMA
Severe Weather Statement
National Weather Service Amarillo TX
720 PM CDT Sat Jul 31 2021
TXC375-010029-
/O.CAN.KAMA.SV.W.0231.000000T0000Z-210801T0045Z/
Potter TX-
720 PM CDT Sat Jul 31 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN POTTER COUNTY IS
CANCELLED...
The severe thunderstorm which prompted the warning has moved out of
the warned area. Therefore, the warning has been cancelled.
LAT...LON 3504 10217 3518 10203 3518 10187 3495 10186
3493 10216
TIME...MOT...LOC 0019Z 358DEG 12KT 3502 10204
$$
TXC381-010045-
/O.CON.KAMA.SV.W.0231.000000T0000Z-210801T0045Z/
Randall TX-
720 PM CDT Sat Jul 31 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 745 PM CDT
FOR NORTHWESTERN RANDALL COUNTY...
At 719 PM CDT, a severe thunderstorm was located 5 miles northeast of
Umbarger, or 7 miles west of Canyon, moving south at 15 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, Umbarger and Mescalero Park.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3504 10217 3518 10203 3518 10187 3495 10186
3493 10216
TIME...MOT...LOC 0019Z 358DEG 12KT 3502 10204
HAIL...0.88IN
WIND...60MPH
$$
LFM657
WWUS54 KAMA 010037
SVSAMA
Severe Weather Statement
National Weather Service Amarillo TX
737 PM CDT Sat Jul 31 2021
TXC381-010046-
/O.EXP.KAMA.SV.W.0231.000000T0000Z-210801T0045Z/
Randall TX-
737 PM CDT Sat Jul 31 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN RANDALL COUNTY
WILL EXPIRE AT 745 PM CDT...
The storm which prompted the warning has weakened below severe
limits, and has exited the warned area. Therefore, the warning will
be allowed to expire. However gusty winds and heavy rain are still
possible with this thunderstorm.
LAT...LON 3504 10217 3518 10203 3518 10187 3495 10186
3493 10216
TIME...MOT...LOC 0036Z 359DEG 15KT 3496 10204
$$
LFMThe office that day
Everything else NWS Amarillo, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 31, 4:27 PM CDT | Special Weather Statement | AMA | Roberts | 33 min |
| Jul 31, 4:37 PM CDT | Severe Thunderstorm Warning | AMA | Roberts | 23 min |
| Jul 31, 4:53 PM CDT | Areal Flood Advisory | AMA | Roberts | 3 hr |
| Jul 31, 4:59 PM CDT | Severe Thunderstorm Warning | AMA | Roberts | 31 min |
| Jul 31, 5:26 PM CDT | Special Weather Statement | AMA | Hemphill | 34 min |
| Jul 31, 5:43 PM CDT | Special Weather Statement | AMA | Dallam | 32 min |
| Jul 31, 6:04 PM CDT | Special Weather Statement | AMA | Potter | 26 min |
| Jul 31, 6:08 PM CDT | Special Weather Statement | AMA | Hutchinson | 37 min |
| Jul 31, 6:21 PM CDT | Special Weather Statement | AMA | Dallam | 24 min |
| Jul 31, 6:29 PM CDT | Special Weather Statement | AMA | Potter | 31 min |
| Jul 31, 6:46 PM CDT | Areal Flood Advisory | AMA | Potter | 3 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.