Alert archive / Texas / Severe Thunderstorm Watches in 2021
Severe Thunderstorm Watch 229
The Storm Prediction Center issued this severe thunderstorm watch at May 31, 2021, 11:16 AM MDT for 5 counties in New Mexico; 27 counties in Texas. It was in force for 9 hr.
The area
The outline as issued.
The facts
- Issued
- May 31, 2021, 11:16 AM MDT (17:16 UTC)
- Expired
- May 31, 2021, 8:00 PM MDT
- In force
- 9 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 3 in
- Strongest gust expected
- 60 kt
All 32 counties
Chaves County, NM, Eddy County, NM, Lea County, NM, Lincoln County, NM, Socorro County, NM, Andrews County, TX, Coke County, TX, Crane County, TX, Crockett County, TX, Culberson County, TX, Ector County, TX, Gaines County, TX, Glasscock County, TX, Howard County, TX, Irion County, TX, Jeff Davis County, TX, Loving County, TX, Martin County, TX, Midland County, TX, Mitchell County, TX, Nolan County, TX, Pecos County, TX, Reagan County, TX, Reeves County, TX, Schleicher County, TX, Sterling County, TX, Sutton County, TX, Terrell County, TX, Tom Green County, TX, Upton County, TX, Ward County, TX, Winkler County, TX
The radar
The Midland/Odessa radar (KMAF), 159 km from the middle of the area, began a volume at 17:18 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 SPC expected
The probabilities SPC published with the watch, for the watch area over its life.
- Two or more tornadoes
- 20%
- One or more EF2 to EF5 tornadoes
- 5%
- Ten or more severe wind reports
- 20%
- One or more gusts of 65 knots or more
- 10%
- Ten or more severe hail reports
- 60%
- One or more hailstones of 2 inches or more
- 40%
- Six or more combined severe hail and wind reports
- 80%
Warnings issued inside it
29 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 31, 11:57 AM MDT | Flash Flood Warning | MAF | Howard | 2 hr |
| May 31, 12:03 PM MDT | Severe Thunderstorm Warning | ABQ | Socorro | 42 min |
| May 31, 12:15 PM MDT | Severe Thunderstorm Warning | MAF | Eddy, Lea | 60 min |
| May 31, 1:24 PM MDT | Severe Thunderstorm Warning | ABQ | Lincoln, Socorro | 66 min |
| May 31, 1:30 PM MDT | Severe Thunderstorm Warning | MAF | Pecos | 60 min |
| May 31, 1:44 PM MDT | Severe Thunderstorm Warning | MAF | Eddy, Lea | 61 min |
| May 31, 1:52 PM MDT | Tornado Warning | ABQ | Lincoln, Socorro | 38 min |
| May 31, 1:59 PM MDT | Severe Thunderstorm Warning | ABQ | Socorro | 39 min |
| May 31, 2:17 PM MDT | Severe Thunderstorm Warning | MAF | Lea | 58 min |
| May 31, 2:18 PM MDT | Severe Thunderstorm Warning | MAF | Pecos | 57 min |
| May 31, 2:24 PM MDT | Tornado Warning | MAF | Pecos | 36 min |
| May 31, 2:51 PM MDT | Severe Thunderstorm Warning | MAF | Pecos | 54 min |
| May 31, 2:58 PM MDT | Tornado Warning | MAF | Pecos | 32 min |
| May 31, 3:12 PM MDT | Severe Thunderstorm Warning | MAF | Loving, Reeves, Ward, Winkler | 63 min |
| May 31, 3:30 PM MDT | Tornado Warning | MAF | Pecos, Terrell | 45 min |
| May 31, 3:36 PM MDT | Severe Thunderstorm Warning | MAF | Pecos, Terrell | 39 min |
| May 31, 4:12 PM MDT | Severe Thunderstorm Warning | MAF | Brewster, Pecos, Terrell | 63 min |
| May 31, 4:12 PM MDT | Severe Thunderstorm Warning | MAF | Crane, Pecos, Reeves, Ward | 63 min |
| May 31, 4:15 PM MDT | Tornado Warning | MAF | Pecos, Terrell | 45 min |
| May 31, 4:23 PM MDT | Tornado Warning | MAF | Brewster, Pecos, Terrell | 52 min |
| May 31, 4:58 PM MDT | Severe Thunderstorm Warning | MAF | Terrell | 62 min |
| May 31, 4:59 PM MDT | Severe Thunderstorm Warning | MAF | Brewster, Jeff Davis, Pecos, Reeves | 61 min |
| May 31, 5:05 PM MDT | Severe Thunderstorm Warning | MAF | Eddy | 25 min |
| May 31, 5:08 PM MDT | Severe Thunderstorm Warning | ABQ | Chaves | 24 min |
| May 31, 5:11 PM MDT | Tornado Warning | MAF | Brewster, Terrell | 49 min |
| May 31, 5:49 PM MDT | Severe Thunderstorm Warning | MAF | Brewster, Pecos | 56 min |
| May 31, 5:50 PM MDT | Severe Thunderstorm Warning | MAF | Pecos, Reeves | 55 min |
| May 31, 5:57 PM MDT | Tornado Warning | MAF | Terrell | 33 min |
| May 31, 6:26 PM MDT | Tornado Warning | MAF | Terrell | 34 min |
Discussions around it
SPC mesoscale discussions over the same counties from four hours before the watch to its end.
The nearest sounding before it
Midland Regional, TX (KMAF), launched 12:00Z, 5.3 hours before the alert went out and 157 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
- 1949 J/kg
- Mixed-layer CIN
- 0 J/kg
- Mixed-layer LCL
- 516 m above ground
- 0-6 km bulk shear
- 40 kt
- 0-1 km storm-relative helicity
- 149 m²/s²
- 0-3 km storm-relative helicity
- 119 m²/s²
- Significant tornado parameter
- 1.2
- Supercell composite
- 7.1
The text
As transmitted.
739
WWUS20 KWNS 311714
SEL9
SPC WW 311714
NMZ000-TXZ000-010000-
URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 229
NWS Storm Prediction Center Norman OK
1215 PM CDT Mon May 31 2021
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
Southeast New Mexico
Southwest Texas
* Effective this Monday afternoon and evening from 1215 PM until
700 PM CDT.
* Primary threats include...
Scattered large hail likely with isolated very large hail events
to 3 inches in diameter possible
Isolated damaging wind gusts to 70 mph possible
A tornado or two possible
SUMMARY...Thunderstorms are expected to intensify this afternoon
over the mountains of southern New Mexico - and across parts of
southwest Texas. A few of these storms are likely to become
supercells, capable of very large hail and gusty winds. A tornado
or two is also possible.
The severe thunderstorm watch area is approximately along and 60
statute miles north and south of a line from 35 miles west southwest
of Ruidoso NM to 30 miles southeast of San Angelo TX. For a complete
depiction of the watch see the associated watch outline update
(WOUS64 KWNS WOU9).
PRECAUTIONARY/PREPAREDNESS ACTIONS...
REMEMBER...A Severe Thunderstorm Watch means conditions are
favorable for severe thunderstorms in and close to the watch area.
Persons in these areas should be on the lookout for threatening
weather conditions and listen for later statements and possible
warnings. Severe thunderstorms can and occasionally do produce
tornadoes.
&&
AVIATION...A few severe thunderstorms with hail surface and aloft to
3 inches. Extreme turbulence and surface wind gusts to 60 knots. A
few cumulonimbi with maximum tops to 500. Mean storm motion vector
28030.
...HartSPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 30, 8:22 PM MDT | Mesoscale Discussion | SPC | Lea | 83 min |
| May 31, 8:18 AM MDT | Mesoscale Discussion | SPC | Chaves, Curry, De Baca, Lincoln, Roosevelt | 57 min |
| May 31, 10:33 AM MDT | Mesoscale Discussion | SPC | Chaves, De Baca, Eddy, Lea, Lincoln, Roosevelt and 1 more | 87 min |
| May 31, 12:47 PM MDT | Mesoscale Discussion | SPC | Bernalillo, Cibola, Los Alamos, McKinley, Rio Arriba, Sandoval and 3 more | 88 min |
| May 31, 2:29 PM MDT | Mesoscale Discussion | SPC | Chaves, Eddy, Lea, Lincoln, Socorro | 91 min |
| May 31, 5:17 PM MDT | Mesoscale Discussion | SPC | Otero | 88 min |
| May 30, 7:59 PM MDT | Mesoscale Discussion | SPC | Carson, Gray, Hansford, Hemphill, Hutchinson, Lipscomb and 6 more | 91 min |
| May 30, 8:17 PM MDT | Severe Thunderstorm Watch | SPC | Armstrong, Carson, Collingsworth, Donley, Gray, Hemphill and 4 more | 5 hr |
| May 30, 10:43 PM MDT | Mesoscale Discussion | SPC | Bailey, Cochran, Cottle, Crosby, Dickens, Floyd and 12 more | 92 min |
| May 31, 1:12 AM MDT | Mesoscale Discussion | SPC | Borden, Fisher, Haskell, Howard, Jones, Kent and 5 more | 3 hr |
| May 31, 1:15 PM MDT | Mesoscale Discussion | SPC | Bosque, Brown, Callahan, Coleman, Comanche, Coryell and 10 more | 2 hr |
| May 31, 1:54 PM MDT | Severe Thunderstorm Watch | SPC | Bell, Bosque, Comanche, Coryell, Ellis, Erath and 13 more | 4 hr |
| May 31, 4:12 PM MDT | Mesoscale Discussion | SPC | Bell, Bosque, Coryell, Ellis, Falls, Freestone and 10 more | 93 min |
| May 31, 4:49 PM MDT | Mesoscale Discussion | SPC | Brewster, Pecos, Terrell | 116 min |
Nearby
Severe Thunderstorm Watches in Texas, 2021Severe Thunderstorm Watches in New Mexico, 2021Every severe thunderstorm watch 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.