Alert archive / Texas / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 324, NWS Midland/Odessa, TX

October 21, 2021Brewster County, Texas

NWS Midland/Odessa, TX issued this severe thunderstorm warning at Oct 21, 2021, 4:27 PM CDT for Brewster County, Texas. It was in force for 48 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, 4:27 PM CDT (21:27 UTC)
Expired
Oct 21, 2021, 5:15 PM CDT
In force
48 min
Issued by
NWS Midland/Odessa, TX
Area
Storm-based polygon
Hail
1.5 in
Wind
60.0 mph

County Brewster County, TX

The radar

The Midland/Odessa radar (KMAF), 250 km from the middle of the area, began a volume at 21:30 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, 9.5 hours before the alert went out and 250 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.

310 
WUUS54 KMAF 212127
SVRMAF
TXC043-212215-
/O.NEW.KMAF.SV.W.0324.211021T2127Z-211021T2215Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Midland/Odessa TX
427 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 515 PM CDT.

* At 427 PM CDT, a severe thunderstorm was located 14 miles south of
  Alpine, and is nearly stationary.

  HAZARD...Ping pong ball size hail and 60 mph wind gusts.

  SOURCE...Radar indicated.

  IMPACT...People and animals outdoors will be injured. Expect hail 
           damage to roofs, siding, windows, and vehicles. Expect 
           wind damage to roofs, siding, and trees.

* Locations impacted include...
  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 3002 10376 3006 10380 3018 10380 3025 10372
      3022 10344 2996 10357
TIME...MOT...LOC 2127Z 287DEG 3KT 3015 10368 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.50 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

29
1 follow-up statement
191 
WWUS54 KMAF 212151
SVSMAF

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

TXC043-212215-
/O.CON.KMAF.SV.W.0324.000000T0000Z-211021T2215Z/
Brewster TX-
451 PM CDT Thu Oct 21 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 515 PM CDT
FOR WEST CENTRAL BREWSTER COUNTY...

At 451 PM CDT, a severe thunderstorm was located 16 miles south of
Alpine, moving east at 10 mph.

HAZARD...Ping pong ball size hail and 60 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...People and animals outdoors will be injured. Expect hail 
         damage to roofs, siding, windows, and vehicles. Expect wind 
         damage to roofs, siding, and trees.

Locations impacted include...
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 3002 10376 3006 10380 3019 10379 3020 10377
      3022 10370 3022 10344 2996 10357
TIME...MOT...LOC 2151Z 284DEG 10KT 3013 10361 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.50 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, 3:38 PM CDTSevere Thunderstorm WarningMAFBrewster52 min
Oct 21, 4:10 PM CDTAreal Flood AdvisoryMAFBrewster3 hr
Oct 21, 4:18 PM CDTSpecial Weather StatementMAFPecos42 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.