Alert archive / Texas / Special Weather Statements in 2021
Special Weather Statement, NWS Amarillo, TX
NWS Amarillo, TX issued this special weather statement at Jul 31, 2021, 6:21 PM CDT for Dallam County, Texas. It was in force for 24 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, 6:21 PM CDT (23:21 UTC)
- Expired
- Jul 31, 2021, 6:45 PM CDT
- In force
- 24 min
- Issued by
- NWS Amarillo, TX
County Dallam County, TX
The radar
The Amarillo radar (KAMA), 150 km from the middle of the area, began a volume at 23:22 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, 11.4 hours before the alert went out and 151 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.
147 WWUS84 KAMA 312321 SPSAMA Special Weather Statement National Weather Service Amarillo TX 621 PM CDT Sat Jul 31 2021 TXZ001-006-312345- Hartley TX-Dallam TX- 621 PM CDT Sat Jul 31 2021 ...SIGNIFICANT WEATHER ADVISORY FOR WESTERN DALLAM AND WESTERN HARTLEY COUNTIES UNTIL 645 PM CDT... At 620 PM CDT, Doppler radar was tracking a strong thunderstorm 11 miles north of Ware, or 20 miles north of Dalhart, moving west at 15 mph. Penny size hail and wind gusts of 50 to 55 mph will be possible with this storm. Locations impacted include... Texline, Ware and Romero. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take shelter in a sturdy building if threatening weather approaches. Torrential rainfall is also occurring with this storm, and may lead to localized flooding. Do not drive your vehicle through flooded roadways. && LAT...LON 3650 10304 3650 10247 3570 10281 3573 10304 TIME...MOT...LOC 2320Z 067DEG 12KT 3634 10265 $$ LFM
The 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, 6:29 PM CDT | Special Weather Statement | AMA | Potter | 31 min |
| Jul 31, 6:46 PM CDT | Areal Flood Advisory | AMA | Potter | 3 hr |
| Jul 31, 6:54 PM CDT | Severe Thunderstorm Warning | AMA | Potter, Randall | 51 min |
| Jul 31, 4:56 PM CDT | Special Weather Statement | AMA | Cimarron | 34 min |
| Jul 31, 5:37 PM CDT | Special Weather Statement | AMA | Cimarron | 23 min |
Nearby
Special Weather Statements in Texas, 2021Every special weather statement 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.