Alert archive / Texas / Tornado Warnings in 2019

Tornado Warning 7, NWS Austin/San Antonio, TX

April 17, 2019Burnet County, Williamson County, Texas

NWS Austin/San Antonio, TX issued this tornado warning at Apr 17, 2019, 11:06 PM CDT for Burnet County, Williamson 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: Apr 17, 2019, 11:06 PM CDT (04:06 UTC)
Expired: Apr 17, 2019, 11:30 PM CDT
In force: 24 min
Issued by: NWS Austin/San Antonio, TX
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.75 in

Counties Burnet County, TX, Williamson County, TX

The radar

The Ft Hood radar (KGRK), 53 km from the middle of the area, began a volume at 04:07 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.

Issued	Product	Office	Lasted
Apr 17, 7:18 PM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Fort Worth, TX (KFWD), launched 00:00Z, 4.1 hours before the alert went out and 227 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 2665 J/kg
Mixed-layer CIN: -13 J/kg
Mixed-layer LCL: 1143 m above ground
0-6 km bulk shear: 56 kt
0-1 km storm-relative helicity: 162 m²/s²
0-3 km storm-relative helicity: 142 m²/s²
Significant tornado parameter: 1.8
Supercell composite: 11.1

Open this sounding in Storm Lab

The text

As transmitted.

801 
WFUS54 KEWX 180406
TOREWX
TXC053-491-180430-
/O.NEW.KEWX.TO.W.0007.190418T0406Z-190418T0430Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Austin/San Antonio TX
1106 PM CDT Wed Apr 17 2019

The National Weather Service in Austin San Antonio has issued a

* Tornado Warning for...
  Northwestern Williamson County in south central Texas...
  Northeastern Burnet County in south central Texas...

* Until 1130 PM CDT.
    
* At 1106 PM CDT, a severe thunderstorm capable of producing a
  tornado was located over Shady Grove, or near Bertram, moving east
  at 30 mph.

  HAZARD...Tornado.

  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...
  Florence, Joppa, Mahomet, Andice, Briggs and Shady Grove. 

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.

This cluster of thunderstorms is capable of producing brief 
tornadoes and widespread significant wind damage. Do not wait to see 
or hear the tornado. For your protection move to an interior room on 
the lowest floor of a building.

&&

LAT...LON 3091 9783 3090 9781 3075 9778 3076 9815
      3089 9817 3093 9784
TIME...MOT...LOC 0406Z 266DEG 27KT 3083 9810 

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$

MO

2 follow-up statements

281 
WWUS54 KEWX 180420
SVSEWX

Severe Weather Statement
National Weather Service Austin/San Antonio TX
1120 PM CDT Wed Apr 17 2019

TXC053-491-180430-
/O.CON.KEWX.TO.W.0007.000000T0000Z-190418T0430Z/
Williamson TX-Burnet TX-
1120 PM CDT Wed Apr 17 2019

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1130 PM CDT FOR
NORTHWESTERN WILLIAMSON AND NORTHEASTERN BURNET COUNTIES...

At 1120 PM CDT, a severe squall line capable of producing both
tornadoes and extensive straight line wind damage was located over
Mahomet, or 9 miles northeast of Bertram, moving east at 40 mph.

HAZARD...TORNADO.

SOURCE...Radar indicated rotation.

IMPACT...Expect damage to mobile homes, roofs, and vehicles.

Locations impacted include...
Florence, Joppa, Mahomet, Andice and Briggs. 

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.

This cluster of thunderstorms is capable of producing tornadoes and
widespread significant wind damage. Do not wait to see or hear the
tornado. For your protection move to an interior room on the lowest
floor of a building.

&&

LAT...LON 3091 9783 3090 9781 3075 9778 3076 9804
      3090 9807 3093 9784
TIME...MOT...LOC 0420Z 272DEG 34KT 3081 9791 

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$

MO

432 
WWUS54 KEWX 180426
SVSEWX

Severe Weather Statement
National Weather Service Austin/San Antonio TX
1126 PM CDT Wed Apr 17 2019

TXC053-491-180434-
/O.EXP.KEWX.TO.W.0007.000000T0000Z-190418T0430Z/
Williamson TX-Burnet TX-
1126 PM CDT Wed Apr 17 2019

...THE TORNADO WARNING FOR NORTHWESTERN WILLIAMSON AND NORTHEASTERN
BURNET COUNTIES WILL EXPIRE AT 1130 PM CDT...
    
The tornado threat has diminished and the Tornado Warning has been
cancelled. However, large hail and damaging winds remain likely and a
Severe Thunderstorm Warning remains in effect for the area.

A Severe Thunderstorm Watch remains in effect until 200 AM CDT for
south central Texas.

Remember, a Severe Thunderstorm Warning still remains in effect for 
parts of Llano, Burnet, Travis and Williamson Counties until 1145 pm.

LAT...LON 3091 9783 3090 9781 3075 9778 3076 9804
      3090 9807 3093 9784
TIME...MOT...LOC 0424Z 266DEG 27KT 3081 9790 

$$

MO

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 17, 7:48 PM CDT	Special Weather Statement	EWX	Val Verde	42 min
Apr 17, 8:11 PM CDT	Severe Thunderstorm Warning	EWX	Edwards, Val Verde	64 min
Apr 17, 9:05 PM CDT	Special Weather Statement	EWX	Edwards, Real	55 min
Apr 17, 9:14 PM CDT	Severe Thunderstorm Warning	EWX	Kinney, Val Verde	46 min
Apr 17, 9:37 PM CDT	Special Weather Statement	EWX	Val Verde	38 min
Apr 17, 9:49 PM CDT	Special Weather Statement	EWX	Gillespie, Llano	56 min
Apr 17, 9:55 PM CDT	Severe Thunderstorm Warning	EWX	Edwards, Kinney, Maverick, Real, Uvalde	65 min
Apr 17, 10:05 PM CDT	Special Weather Statement	EWX	Kerr, Real	55 min
Apr 17, 10:21 PM CDT	Severe Thunderstorm Warning	EWX	Burnet, Llano	54 min
Apr 17, 10:41 PM CDT	Severe Thunderstorm Warning	EWX	Blanco, Gillespie, Kendall, Kerr	49 min
Apr 17, 10:44 PM CDT	Special Weather Statement	EWX	Bandera	46 min
Apr 17, 10:51 PM CDT	Severe Thunderstorm Warning	EWX	Burnet, Llano, Travis, Williamson	54 min
Apr 17, 10:56 PM CDT	Severe Thunderstorm Warning	EWX	Kinney, Maverick, Uvalde, Zavala	64 min
Apr 17, 11:30 PM CDT	Special Weather Statement	EWX	Bandera, Blanco, Comal, Hays, Kendall	60 min
Apr 17, 11:39 PM CDT	Special Weather Statement	EWX	Williamson	66 min
Apr 17, 11:53 PM CDT	Severe Thunderstorm Warning	EWX	Blanco, Comal, Hays, Kendall	41 min
Apr 17, 11:53 PM CDT	Severe Thunderstorm Warning	EWX	Frio, Medina, Uvalde, Zavala	52 min
Apr 18, 12:12 AM CDT	Special Weather Statement	EWX	Atascosa, Bexar, Gonzales, Guadalupe, Wilson	63 min
Apr 18, 12:36 AM CDT	Special Weather Statement	EWX	Bastrop, Fayette, Lee	54 min
Apr 18, 12:42 AM CDT	Special Weather Statement	EWX	Dimmit	48 min
Apr 18, 12:44 AM CDT	Special Weather Statement	EWX	Caldwell	46 min
Apr 18, 12:58 AM CDT	Areal Flood Advisory	EWX	Bexar	3 hr
Apr 18, 12:59 AM CDT	Severe Thunderstorm Warning	EWX	Dimmit, Frio, Zavala	48 min
Apr 18, 1:14 AM CDT	Special Weather Statement	EWX	Atascosa, Bastrop, Caldwell, DeWitt, Fayette, Gonzales and 4 more	76 min
Apr 18, 1:38 AM CDT	Severe Thunderstorm Warning	EWX	Atascosa, Frio	52 min
Apr 18, 1:44 AM CDT	Special Weather Statement	EWX	Dimmit	46 min
Apr 18, 1:52 AM CDT	Severe Thunderstorm Warning	EWX	DeWitt, Gonzales, Karnes, Lavaca	53 min
Apr 18, 2:25 AM CDT	Special Weather Statement	EWX	Karnes, Wilson	35 min
Apr 18, 2:38 AM CDT	Special Weather Statement	EWX	Atascosa	52 min

Nearby

Tornado Warnings in Texas, 2019 Every tornado warning in 2019 Tornadoes in 2019

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.