Alert archive / Texas / Tornado Warnings in 2024

Tornado Warning 4, NWS Austin/San Antonio, TX

May 9, 2024Llano County, Texas

NWS Austin/San Antonio, TX issued this tornado warning at May 9, 2024, 5:51 PM CDT for Llano County, Texas. It was in force for 39 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
May 9, 2024, 5:51 PM CDT (22:51 UTC)
Expired
May 9, 2024, 6:30 PM CDT
In force
39 min
Issued by
NWS Austin/San Antonio, TX
Area
Storm-based polygon
Tornado
Radar indicated
Hail
2.0 in

County Llano County, TX

The radar

The Ft Hood radar (KGRK), 128 km from the middle of the area, began a volume at 22:51 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
May 9, 5:46 PM CDTSevere Thunderstorm WatchSPC6 hr

The nearest sounding before it

Del Rio, TX (KDRT), launched 12:00Z, 10.9 hours before the alert went out and 260 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, Del Rio, TX at 12:00Z on 2024-05-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 4728 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, Del Rio, TX at 12:00Z on 2024-05-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 224 square meters per square second.19395878Sfc1 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
4728 J/kg
Mixed-layer CIN
-103 J/kg
Mixed-layer LCL
693 m above ground
0-6 km bulk shear
55 kt
0-1 km storm-relative helicity
224 m²/s²
0-3 km storm-relative helicity
304 m²/s²
Significant tornado parameter
5.5
Supercell composite
32.6

Open this sounding in Storm Lab

The text

As transmitted.

637 
WFUS54 KEWX 092251
TOREWX
TXC299-092330-
/O.NEW.KEWX.TO.W.0004.240509T2251Z-240509T2330Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Austin/San Antonio TX
551 PM CDT Thu May 9 2024

The National Weather Service in Austin San Antonio has issued a

* Tornado Warning for...
  Western Llano County in south central Texas...

* Until 630 PM CDT.

* At 548 PM CDT, a severe thunderstorm capable of producing a tornado
  was located near Pontotoc, or 17 miles northeast of Mason, moving
  southeast at 35 mph.

  HAZARD...Tornado and hail up to two inches in diameter.

  SOURCE...Radar indicated rotation.

  IMPACT...Flying debris will be dangerous to those caught without 
           shelter. Mobile homes will be damaged or destroyed. 
           Damage to roofs, windows, and vehicles will occur.  Tree 
           damage is likely.

* Locations impacted include...
  Llano, Castell, Field Creek, Baby Head, Lone Grove, Valley Spring,
  Tow, and Stolz.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

&&

LAT...LON 3090 9845 3053 9877 3067 9897 3089 9897
      3092 9893 3092 9845
TIME...MOT...LOC 2248Z 300DEG 28KT 3093 9903 

TORNADO...RADAR INDICATED
MAX HAIL SIZE...2.00 IN

$$

CP
2 follow-up statements
918 
WWUS54 KEWX 092303
SVSEWX

Severe Weather Statement
National Weather Service Austin/San Antonio TX
603 PM CDT Thu May 9 2024

TXC299-092330-
/O.CON.KEWX.TO.W.0004.000000T0000Z-240509T2330Z/
Llano TX-
603 PM CDT Thu May 9 2024

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 630 PM CDT FOR WESTERN
LLANO COUNTY...

At 603 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Field Creek, or 16 miles northwest of Llano, moving
southeast at 30 mph.

HAZARD...Tornado and quarter size hail.

SOURCE...Radar indicated rotation.

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely.

Locations impacted include...
Llano, Castell, Field Creek, Baby Head, Lone Grove, Valley Spring,
Tow, and Stolz.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

&&

LAT...LON 3090 9845 3053 9877 3067 9897 3089 9897
      3092 9893 3092 9845
TIME...MOT...LOC 2303Z 300DEG 28KT 3087 9891 

TORNADO...RADAR INDICATED
MAX HAIL SIZE...1.00 IN

$$

CP
895 
WWUS54 KEWX 092318
SVSEWX

Severe Weather Statement
National Weather Service Austin/San Antonio TX
618 PM CDT Thu May 9 2024

TXC299-092330-
/O.CON.KEWX.TO.W.0004.000000T0000Z-240509T2330Z/
Llano TX-
618 PM CDT Thu May 9 2024

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 630 PM CDT FOR WESTERN
LLANO COUNTY...

At 618 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Valley Spring, or 7 miles west of Llano, moving
southeast at 35 mph.

HAZARD...Tornado and quarter size hail.

SOURCE...Radar indicated rotation.

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely.

Locations impacted include...
Llano, Castell, Field Creek, Baby Head, Lone Grove, Valley Spring,
Tow, and Stolz.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

&&

LAT...LON 3090 9845 3053 9877 3067 9897 3089 9897
      3092 9893 3092 9845
TIME...MOT...LOC 2318Z 301DEG 29KT 3079 9879 

TORNADO...RADAR INDICATED
MAX HAIL SIZE...1.00 IN

$$

CP

The office that day

Everything else NWS Austin/San Antonio, TX issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 9, 3:12 AM CDTDense Fog AdvisoryEWXBandera, Bastrop, Bexar, Caldwell, Comal, Fayette and 11 more5 hr
May 9, 6:29 PM CDTSevere Thunderstorm WarningEWXLlano61 min
May 9, 6:44 PM CDTSpecial Weather StatementEWXBlanco31 min
May 9, 6:58 PM CDTSevere Thunderstorm WarningEWXBlanco, Burnet, Gillespie, Llano62 min

Nearby

Tornado Warnings in Texas, 2024Every tornado warning in 2024Tornadoes in 2024

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.