Alert archive / Texas / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 207, NWS Amarillo, TX
NWS Amarillo, TX issued this severe thunderstorm warning at Jul 17, 2021, 3:00 PM CDT for Dallam County, Texas. It was in force for 60 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 17, 2021, 3:00 PM CDT (20:00 UTC)
- Expired
- Jul 17, 2021, 4:00 PM CDT
- In force
- 60 min
- Issued by
- NWS Amarillo, TX
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
County Dallam County, TX
The radar
The Amarillo radar (KAMA), 152 km from the middle of the area, began a volume at 20:02 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, 8.0 hours before the alert went out and 152 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
- 746 J/kg
- Mixed-layer CIN
- -94 J/kg
- Mixed-layer LCL
- 1445 m above ground
- 0-6 km bulk shear
- 18 kt
- 0-1 km storm-relative helicity
- 82 m²/s²
- 0-3 km storm-relative helicity
- 84 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.4
The text
As transmitted.
689
WUUS54 KAMA 172000
SVRAMA
TXC111-172100-
/O.NEW.KAMA.SV.W.0207.210717T2000Z-210717T2100Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Amarillo TX
300 PM CDT Sat Jul 17 2021
The National Weather Service in Amarillo has issued a
* Severe Thunderstorm Warning for...
Northeastern Dallam County in the Panhandle of Texas...
* Until 400 PM CDT.
* At 300 PM CDT, a severe thunderstorm was located 17 miles southeast
of Felt, or 21 miles south of Boise City, moving south 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.
* This severe thunderstorm will remain over mainly rural areas of
northeastern Dallam County.
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 3648 10276 3649 10235 3635 10226 3626 10264
TIME...MOT...LOC 2000Z 339DEG 7KT 3641 10253
HAIL...1.00IN
WIND...60MPH
$$
Guerrero1 follow-up statement
743
WWUS54 KAMA 172050
SVSAMA
Severe Weather Statement
National Weather Service Amarillo TX
350 PM CDT Sat Jul 17 2021
TXC111-172100-
/O.EXP.KAMA.SV.W.0207.000000T0000Z-210717T2100Z/
Dallam TX-
350 PM CDT Sat Jul 17 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN DALLAM COUNTY
WILL EXPIRE AT 400 PM CDT...
The storm which prompted the warning has moved out of the area.
Therefore, the warning will be allowed to expire. However gusty
winds and heavy rain are still possible with this thunderstorm.
LAT...LON 3648 10276 3649 10235 3635 10226 3626 10264
TIME...MOT...LOC 2050Z 339DEG 7KT 3632 10249
$$
GuerreroThe office that day
Everything else NWS Amarillo, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 16, 7:47 PM CDT | Special Weather Statement | AMA | Oldham | 28 min |
| Jul 16, 8:02 PM CDT | Severe Thunderstorm Warning | AMA | Hartley | 24 min |
| Jul 16, 8:24 PM CDT | Special Weather Statement | AMA | Oldham | 36 min |
| Jul 16, 8:26 PM CDT | Special Weather Statement | AMA | Hutchinson | 34 min |
| Jul 17, 4:58 AM CDT | Special Weather Statement | AMA | Hansford | 32 min |
| Jul 17, 5:33 AM CDT | Special Weather Statement | AMA | Hansford | 27 min |
| Jul 17, 5:45 AM CDT | Severe Thunderstorm Warning | AMA | Hansford | 30 min |
| Jul 17, 5:57 AM CDT | Areal Flood Advisory | AMA | Hansford | 2 hr |
| Jul 17, 6:14 AM CDT | Special Weather Statement | AMA | Hansford | 31 min |
| Jul 17, 2:30 PM CDT | Special Weather Statement | AMA | Sherman | 60 min |
| Jul 17, 2:40 PM CDT | Areal Flood Advisory | AMA | Dallam | 2 hr |
| Jul 17, 2:50 PM CDT | Special Weather Statement | AMA | Dallam | 55 min |
| Jul 17, 3:27 PM CDT | Special Weather Statement | AMA | Moore | 63 min |
| Jul 17, 3:40 PM CDT | Special Weather Statement | AMA | Gray | 65 min |
| Jul 17, 3:48 PM CDT | Severe Thunderstorm Warning | AMA | Gray | 57 min |
| Jul 17, 3:55 PM CDT | Areal Flood Advisory | AMA | Dallam, Hartley | 105 min |
| Jul 17, 3:59 PM CDT | Special Weather Statement | AMA | Sherman | 61 min |
| Jul 17, 4:02 PM CDT | Severe Thunderstorm Warning | AMA | Sherman | 34 min |
| Jul 17, 4:46 PM CDT | Special Weather Statement | AMA | Wheeler | 59 min |
| Jul 17, 4:52 PM CDT | Special Weather Statement | AMA | Armstrong | 53 min |
| Jul 17, 4:56 PM CDT | Flash Flood Warning | AMA | Armstrong | 98 min |
| Jul 17, 5:00 PM CDT | Severe Thunderstorm Warning | AMA | Armstrong | 43 min |
| Jul 17, 5:38 PM CDT | Special Weather Statement | AMA | Donley | 37 min |
| Jul 17, 6:01 PM CDT | Severe Thunderstorm Warning | AMA | Donley | 24 min |
| Jul 17, 6:23 PM CDT | Areal Flood Advisory | AMA | Potter, Randall | 3 hr |
| Jul 17, 6:27 PM CDT | Severe Thunderstorm Warning | AMA | Armstrong, Randall | 63 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.