Alert archive / Texas / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 233, NWS Amarillo, TX
NWS Amarillo, TX issued this severe thunderstorm warning at Jul 31, 2021, 10:10 PM CDT for Hansford County, Ochiltree County, Texas; Texas County, Oklahoma. It was in force for 65 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, 10:10 PM CDT (03:10 UTC)
- Expired
- Jul 31, 2021, 11:15 PM CDT
- In force
- 65 min
- Issued by
- NWS Amarillo, TX
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 70.0 mph
Counties Texas County, OK, Hansford County, TX, Ochiltree County, TX
The radar
The Amarillo radar (KAMA), 133 km from the middle of the area, began a volume at 03:12 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
Dodge City, (KDDC), launched 00:00Z, 3.2 hours before the alert went out and 201 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
- 1535 J/kg
- Mixed-layer CIN
- -58 J/kg
- Mixed-layer LCL
- 1333 m above ground
- 0-6 km bulk shear
- 13 kt
- 0-1 km storm-relative helicity
- 38 m²/s²
- 0-3 km storm-relative helicity
- 85 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
169
WUUS54 KAMA 010310
SVRAMA
OKC139-TXC195-357-010415-
/O.NEW.KAMA.SV.W.0233.210801T0310Z-210801T0415Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Amarillo TX
1010 PM CDT Sat Jul 31 2021
The National Weather Service in Amarillo has issued a
* Severe Thunderstorm Warning for...
Southeastern Texas County in the Panhandle of Oklahoma...
Hansford County in the Panhandle of Texas...
Northwestern Ochiltree County in the Panhandle of Texas...
* Until 1115 PM CDT.
* At 1010 PM CDT, a severe thunderstorm was located 8 miles northeast
of Gruver, or 12 miles northwest of Spearman, moving southwest at
25 mph.
HAZARD...70 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect some tree damage. Damage is likely to mobile
homes, roofs, and outbuildings.
* Locations impacted include...
Spearman, Gruver and Waka.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3656 10162 3656 10101 3615 10098 3614 10162
TIME...MOT...LOC 0310Z 029DEG 20KT 3635 10131
HAIL...<.75IN
WIND...70MPH
$$
LFM2 follow-up statements
362 WWUS54 KAMA 010337 SVSAMA Severe Weather Statement National Weather Service Amarillo TX 1037 PM CDT Sat Jul 31 2021 OKC139-TXC195-357-010415- /O.CON.KAMA.SV.W.0233.000000T0000Z-210801T0415Z/ Texas OK-Hansford TX-Ochiltree TX- 1037 PM CDT Sat Jul 31 2021 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1115 PM CDT FOR SOUTHEASTERN TEXAS...EASTERN HANSFORD AND NORTHWESTERN OCHILTREE COUNTIES... At 1036 PM CDT, a severe thunderstorm was located over Gruver, or 11 miles west of Spearman, moving southwest at 25 mph. HAZARD...60 mph wind gusts. SOURCE...Radar indicated. IMPACT...Minor damage to roofs, siding, and trees is possible. Locations impacted include... Spearman, Gruver and Waka. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. && LAT...LON 3655 10145 3656 10101 3615 10098 3614 10145 TIME...MOT...LOC 0336Z 029DEG 20KT 3622 10140 HAIL...<.75IN WIND...60MPH $$ LFM
174
WWUS54 KAMA 010406
SVSAMA
Severe Weather Statement
National Weather Service Amarillo TX
1106 PM CDT Sat Jul 31 2021
OKC139-TXC195-357-010416-
/O.EXP.KAMA.SV.W.0233.000000T0000Z-210801T0415Z/
Texas OK-Hansford TX-Ochiltree TX-
1106 PM CDT Sat Jul 31 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN TEXAS...EASTERN
HANSFORD AND NORTHWESTERN OCHILTREE COUNTIES WILL EXPIRE AT 1115 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 3655 10145 3656 10101 3615 10098 3614 10145
TIME...MOT...LOC 0406Z 029DEG 20KT 3608 10150
$$
LFMThe office that day
Everything else NWS Amarillo, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 31, 7:08 PM CDT | Severe Thunderstorm Warning | AMA | Dallam | 25 min |
| Jul 31, 7:14 PM CDT | Areal Flood Advisory | AMA | Potter, Randall | 3 hr |
| Jul 31, 8:04 PM CDT | Special Weather Statement | AMA | Carson | 26 min |
| Jul 31, 8:18 PM CDT | Special Weather Statement | AMA | Randall | 27 min |
| Jul 31, 8:57 PM CDT | Special Weather Statement | AMA | Randall | 33 min |
| Jul 31, 10:00 PM CDT | Special Weather Statement | AMA | Gray | 30 min |
| Jul 31, 10:12 PM CDT | Severe Thunderstorm Warning | AMA | Carson, Gray | 63 min |
| Jul 31, 11:05 PM CDT | Special Weather Statement | AMA | Hutchinson, Ochiltree, Roberts | 25 min |
| Jul 31, 11:28 PM CDT | Areal Flood Advisory | AMA | Hansford, Ochiltree | 3 hr |
| Jul 31, 11:44 PM CDT | Special Weather Statement | AMA | Hemphill | 46 min |
| Jul 31, 11:57 PM CDT | Areal Flood Advisory | AMA | Hemphill, Roberts | 3 hr |
| Aug 1, 12:27 AM CDT | Flash Flood Warning | AMA | Hemphill | 2 hr |
| Aug 1, 1:12 AM CDT | Areal Flood Advisory | AMA | Armstrong, Randall | 3 hr |
Nearby
Severe Thunderstorm Warnings in Texas, 2021Severe Thunderstorm Warnings in Oklahoma, 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.