Alert archive / Texas / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 216, NWS Amarillo, TX
NWS Amarillo, TX issued this severe thunderstorm warning at Jul 17, 2021, 7:51 PM CDT for Deaf Smith County, Randall County, Texas. It was in force for 54 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 17, 2021, 7:51 PM CDT (00:51 UTC)
- Expired
- Jul 17, 2021, 8:45 PM CDT
- In force
- 54 min
- Issued by
- NWS Amarillo, TX
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 70.0 mph
Counties Deaf Smith County, TX, Randall County, TX
The radar
The Amarillo radar (KAMA), 77 km from the middle of the area, began a volume at 00:54 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 |
|---|---|---|---|
| Jul 17, 8:10 PM CDT | TSTM WND GST 66 | 2 Nw Hereford, TX | 66 MPH GUST W/ 50 MPH WIND SPEED. |
| Jul 17, 8:11 PM CDT | TSTM WND DMG | Hereford, TX | DEAN CALLED - 3 AND 1 LIMBS BROKEN FROM WIND, WILL CALL BACK WITH MORE DAMAGE REPORTS. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Midland Regional, TX (KMAF), launched 00:00Z, 0.9 hours before the alert went out and 341 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
- 1227 J/kg
- Mixed-layer CIN
- -28 J/kg
- Mixed-layer LCL
- 1935 m above ground
- 0-6 km bulk shear
- 19 kt
- 0-1 km storm-relative helicity
- 7 m²/s²
- 0-3 km storm-relative helicity
- 76 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
805
WUUS54 KAMA 180051
SVRAMA
TXC117-381-180145-
/O.NEW.KAMA.SV.W.0216.210718T0051Z-210718T0145Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Amarillo TX
751 PM CDT Sat Jul 17 2021
The National Weather Service in Amarillo has issued a
* Severe Thunderstorm Warning for...
Western Randall County in the Panhandle of Texas...
Deaf Smith County in the Panhandle of Texas...
* Until 845 PM CDT.
* At 751 PM CDT, severe thunderstorms were located along a line
extending from 8 miles south of Canyon to 12 miles northwest of
Dawn to 10 miles north of Bellview, moving southwest at 15 mph.
HAZARD...70 mph wind gusts and penny size hail.
SOURCE...Radar indicated.
IMPACT...Expect some tree damage. Damage is likely to mobile
homes, roofs, and outbuildings.
* Locations impacted include...
Amarillo, Hereford, Canyon, Mescalero Park, Buffalo Lake, Dawn,
Umbarger, Bootleg and Simms.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Large hail and damaging winds and continuous cloud to ground
lightning is occurring with these storms. Move indoors immediately.
Lightning is one of nature's leading killers. Remember, if you can
hear thunder, you are close enough to be struck by lightning.
Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 3509 10304 3519 10270 3518 10202 3497 10175
3475 10195 3475 10304
TIME...MOT...LOC 0051Z 045DEG 14KT 3487 10197 3502 10237 3497 10309
HAIL...0.75IN
WIND...70MPH
$$
DGW2 follow-up statements
403
WWUS54 KAMA 180058
SVSAMA
Severe Weather Statement
National Weather Service Amarillo TX
758 PM CDT Sat Jul 17 2021
TXC117-381-180145-
/O.CON.KAMA.SV.W.0216.000000T0000Z-210718T0145Z/
Randall TX-Deaf Smith TX-
758 PM CDT Sat Jul 17 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 845 PM CDT
FOR WESTERN RANDALL AND DEAF SMITH COUNTIES...
At 758 PM CDT, severe thunderstorms were located along a line
extending from 7 miles south of Canyon to 12 miles northwest of Dawn
to 10 miles north of Bellview, moving southwest at 15 mph.
HAZARD...70 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Expect some tree damage. Damage is likely to mobile homes,
roofs, and outbuildings. Hail damage to vehicles is
expected.
Locations impacted include...
Amarillo, Hereford, Canyon, Mescalero Park, Buffalo Lake, Dawn,
Umbarger, Bootleg and Simms.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
These storms have had a history of producing 60 to 70 mph winds with
very heavy rain in short periods of time.
For your protection move to an interior room on the lowest floor of a
building.
Continuous cloud to ground lightning is occurring with these storms.
Move indoors immediately. Lightning is one of nature's leading
killers. Remember, if you can hear thunder, you are close enough to
be struck by lightning.
Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 3509 10304 3519 10270 3518 10202 3497 10175
3475 10195 3475 10304
TIME...MOT...LOC 0058Z 045DEG 14KT 3488 10196 3503 10236 3498 10308
HAIL...1.00IN
WIND...70MPH
$$
DGW984
WWUS54 KAMA 180122
SVSAMA
Severe Weather Statement
National Weather Service Amarillo TX
822 PM CDT Sat Jul 17 2021
TXC117-381-180145-
/O.CON.KAMA.SV.W.0216.000000T0000Z-210718T0145Z/
Randall TX-Deaf Smith TX-
822 PM CDT Sat Jul 17 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 845 PM CDT
FOR SOUTHWESTERN RANDALL AND DEAF SMITH COUNTIES...
At 820 PM CDT, automated weather equipment reported severe
thunderstorms were located along a line extending from 7 miles
southeast of Buffalo Lake to 11 miles north of Hereford to 8 miles
north of Bellview, moving southwest at 15 mph.
HAZARD...70 mph wind gusts and quarter size hail.
SOURCE...Automated weather equipment reported a 66 mph wind gust
near Hereford. Some tree damage had also been reported by
the Emergency Manager.
IMPACT...Expect some tree damage. Damage is likely to mobile homes,
roofs, and outbuildings. Hail damage to vehicles is
expected.
Locations impacted include...
Hereford, Umbarger, Bootleg, Buffalo Lake, Dawn and Simms.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Continuous cloud to ground lightning is occurring with these storms.
Move indoors immediately. Lightning is one of nature's leading
killers. Remember, if you can hear thunder, you are close enough to
be struck by lightning.
Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 3502 10304 3500 10276 3509 10258 3514 10215
3493 10199 3475 10195 3475 10304
TIME...MOT...LOC 0120Z 045DEG 14KT 3484 10201 3499 10241 3494 10313
HAIL...1.00IN
WIND...70MPH
$$
DGWThe office that day
Everything else NWS Amarillo, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 17, 7:04 PM CDT | Severe Thunderstorm Warning | AMA | Potter, Randall | 71 min |
| Jul 17, 7:13 PM CDT | Severe Thunderstorm Warning | AMA | Deaf Smith, Randall | 62 min |
| Jul 17, 7:25 PM CDT | Special Weather Statement | AMA | Randall | 35 min |
| Jul 17, 7:40 PM CDT | Flash Flood Warning | AMA | Potter, Randall | 99 min |
| Jul 17, 8:17 PM CDT | Areal Flood Advisory | AMA | Deaf Smith, Randall | 3 hr |
| Jul 17, 8:47 PM CDT | Special Weather Statement | AMA | Deaf Smith | 43 min |
| Jul 18, 3:26 AM CDT | Areal Flood Advisory | AMA | Hemphill, Lipscomb | 3 hr |
| Jul 18, 4:23 PM CDT | Severe Thunderstorm Warning | AMA | Hansford, Ochiltree | 67 min |
| Jul 18, 4:47 PM CDT | Special Weather Statement | AMA | Lipscomb | 28 min |
| Jul 18, 5:19 PM CDT | Special Weather Statement | AMA | Lipscomb, Ochiltree | 56 min |
| Jul 18, 5:59 PM CDT | Special Weather Statement | AMA | Hutchinson | 31 min |
| Jul 18, 6:07 PM CDT | Special Weather Statement | AMA | Hemphill, Roberts | 53 min |
| Jul 18, 6:45 PM CDT | Special Weather Statement | AMA | Carson | 45 min |
| Jul 18, 6:55 PM CDT | Special Weather Statement | AMA | Gray, Wheeler | 65 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.