Alert archive / Texas / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 323, NWS Midland/Odessa, TX

October 21, 2021Brewster County, Texas

NWS Midland/Odessa, TX issued this severe thunderstorm warning at Oct 21, 2021, 3:38 PM CDT for Brewster County, Texas. It was in force for 52 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
Oct 21, 2021, 3:38 PM CDT (20:38 UTC)
Expired
Oct 21, 2021, 4:30 PM CDT
In force
52 min
Issued by
NWS Midland/Odessa, TX
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

County Brewster County, TX

The radar

The Midland/Odessa radar (KMAF), 245 km from the middle of the area, began a volume at 20:38 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

Midland Regional, TX (KMAF), launched 12:00Z, 8.6 hours before the alert went out and 245 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.

Skew-T log-pSkew-T log-p diagram, Midland Regional, TX at 12:00Z on 2021-10-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1076 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Midland Regional, TX at 12:00Z on 2021-10-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 82 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
1076 J/kg
Mixed-layer CIN
-203 J/kg
Mixed-layer LCL
820 m above ground
0-6 km bulk shear
25 kt
0-1 km storm-relative helicity
82 m²/s²
0-3 km storm-relative helicity
117 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.4

Open this sounding in Storm Lab

The text

As transmitted.

219 
WUUS54 KMAF 212038
SVRMAF
TXC043-212130-
/O.NEW.KMAF.SV.W.0323.211021T2038Z-211021T2130Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Midland/Odessa TX
338 PM CDT Thu Oct 21 2021

The National Weather Service in Midland has issued a

* Severe Thunderstorm Warning for...
  West central Brewster County in southwestern Texas...

* Until 430 PM CDT.

* At 338 PM CDT, a severe thunderstorm was located 12 miles south of
  Alpine, moving south at 5 mph.

  HAZARD...60 mph wind gusts and quarter size hail.

  SOURCE...Radar indicated.

  IMPACT...Hail damage to vehicles is expected. Expect wind damage 
           to roofs, siding, and trees.

* Locations impacted include...
  Elephant Mountain and Elephant Mountain Wildlife Management Area. 

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 this storm. 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 this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 3025 10380 3032 10362 3003 10343 2994 10380
TIME...MOT...LOC 2038Z 343DEG 5KT 3019 10369 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

29
1 follow-up statement
990 
WWUS54 KMAF 212052
SVSMAF

Severe Weather Statement
National Weather Service Midland/Odessa TX
352 PM CDT Thu Oct 21 2021

TXC043-212130-
/O.CON.KMAF.SV.W.0323.000000T0000Z-211021T2130Z/
Brewster TX-
352 PM CDT Thu Oct 21 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 430 PM CDT
FOR WEST CENTRAL BREWSTER COUNTY...

At 352 PM CDT, a severe thunderstorm was located 14 miles south of
Alpine, and is nearly stationary.

HAZARD...60 mph wind gusts and half dollar size hail.

SOURCE...Radar indicated.

IMPACT...Hail damage to vehicles is expected. Expect wind damage to 
         roofs, siding, and trees.

Locations impacted include...
Elephant Mountain and Elephant Mountain Wildlife Management Area. 

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 this storm.
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 this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 3025 10380 3030 10362 3003 10343 2994 10380
TIME...MOT...LOC 2052Z 348DEG 2KT 3016 10369 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.25 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

29

The office that day

Everything else NWS Midland/Odessa, TX issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Oct 21, 2:18 PM CDTAreal Flood AdvisoryMAFJeff Davis117 min
Oct 21, 2:28 PM CDTSpecial Weather StatementMAFJeff Davis47 min
Oct 21, 2:39 PM CDTAreal Flood AdvisoryMAFBrewster, Presidio3 hr
Oct 21, 2:52 PM CDTFlash Flood WarningMAFJeff Davis3 hr
Oct 21, 3:08 PM CDTSpecial Weather StatementMAFPresidio52 min
Oct 21, 3:09 PM CDTSpecial Weather StatementMAF51 min
Oct 21, 3:30 PM CDTSpecial Weather StatementMAF45 min
Oct 21, 3:36 PM CDTSevere Thunderstorm WarningMAFBrewster, Jeff Davis, Presidio39 min
Oct 21, 4:10 PM CDTAreal Flood AdvisoryMAFBrewster3 hr
Oct 21, 4:18 PM CDTSpecial Weather StatementMAFPecos42 min
Oct 21, 4:27 PM CDTSevere Thunderstorm WarningMAFBrewster48 min
Oct 21, 4:35 PM CDTFlash Flood WarningMAFBrewster3 hr
Oct 21, 4:49 PM CDTSpecial Weather StatementMAFPresidio41 min
Oct 21, 4:56 PM CDTSpecial Weather StatementMAFPresidio49 min
Oct 21, 5:13 PM CDTSpecial Weather StatementMAFBrewster47 min
Oct 21, 5:27 PM CDTSevere Thunderstorm WarningMAFBrewster, Presidio48 min
Oct 21, 5:34 PM CDTSevere Thunderstorm WarningMAFBrewster41 min
Oct 21, 6:15 PM CDTSpecial Weather StatementMAFPresidio45 min
Oct 21, 6:24 PM CDTSevere Thunderstorm WarningMAFBrewster, Presidio29 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.