Alert archive / Texas / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 7, NWS Austin/San Antonio, TX

March 22, 20215 counties in Texas

NWS Austin/San Antonio, TX issued this severe thunderstorm warning at Mar 22, 2021, 10:05 PM CDT for 5 counties in Texas. It was in force for 55 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: Mar 22, 2021, 10:05 PM CDT (03:05 UTC)
Expired: Mar 22, 2021, 11:00 PM CDT
In force: 55 min
Issued by: NWS Austin/San Antonio, TX
Area: Storm-based polygon
Tornado: Possible
Hail: 1.25 in
Wind: 60.0 mph

Counties Bandera County, TX, Blanco County, TX, Comal County, TX, Kendall County, TX, Kerr County, TX

The radar

The Austin/San Antonio radar (KEWX), 57 km from the middle of the area, began a volume at 03:07 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
Mar 22, 6:05 PM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Del Rio, TX (KDRT), launched 00:00Z, 3.1 hours before the alert went out and 222 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: 1091 J/kg
Mixed-layer CIN: -138 J/kg
Mixed-layer LCL: 1422 m above ground
0-6 km bulk shear: 86 kt
0-1 km storm-relative helicity: 204 m²/s²
0-3 km storm-relative helicity: 225 m²/s²
Significant tornado parameter: 0.3
Supercell composite: 1.6

Open this sounding in Storm Lab

The text

As transmitted.

570 
WUUS54 KEWX 230305
SVREWX
TXC019-031-091-259-265-230400-
/O.NEW.KEWX.SV.W.0007.210323T0305Z-210323T0400Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Austin/San Antonio TX
1005 PM CDT Mon Mar 22 2021

The National Weather Service in Austin San Antonio has issued a

* Severe Thunderstorm Warning for...
  Northeastern Bandera County in south central Texas...
  Southeastern Kerr County in south central Texas...
  Southwestern Blanco County in south central Texas...
  Kendall County in south central Texas...
  Northwestern Comal County in south central Texas...

* Until 1100 PM CDT.

* At 1005 PM CDT, a severe thunderstorm was located near Medina,
  moving east at 55 mph.

  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...
  Medina, Kerrville, Boerne, Comfort, Blanco, Canyon Lake, Fair Oaks
  Ranch, Bulverde, Ingram, Walnut Grove, Guadalupe River State Park,
  Camp Verde, Kendalia, Smithson Valley, Kerrville-Schreiner Park,
  Sisterdale, Kreutzberg, Spring Branch, Welfare and Nelson City.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3010 9835 2973 9835 2972 9837 2975 9841
      2974 9842 2973 9842 2973 9843 2974 9845
      2973 9848 2974 9853 2976 9855 2974 9858
      2981 9935 2993 9938 3011 9920
TIME...MOT...LOC 0305Z 270DEG 47KT 2989 9926 

TORNADO...POSSIBLE
HAIL...1.25IN
WIND...60MPH
 
$$

EW

2 follow-up statements

649 
WWUS54 KEWX 230328
SVSEWX

Severe Weather Statement
National Weather Service Austin/San Antonio TX
1028 PM CDT Mon Mar 22 2021

TXC019-031-091-259-265-230400-
/O.CON.KEWX.SV.W.0007.000000T0000Z-210323T0400Z/
Bandera TX-Kerr TX-Blanco TX-Kendall TX-Comal TX-
1028 PM CDT Mon Mar 22 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1100 PM CDT
FOR NORTHEASTERN BANDERA...SOUTHEASTERN KERR...SOUTHWESTERN BLANCO...
KENDALL AND NORTHWESTERN COMAL COUNTIES...

At 1028 PM CDT, a severe thunderstorm was located near Comfort,
moving east at 55 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...
Kerrville, Boerne, Comfort, Blanco, Canyon Lake, Fair Oaks Ranch,
Bulverde, Walnut Grove, Guadalupe River State Park, Camp Verde,
Kendalia, Smithson Valley, Sisterdale, Kreutzberg, Spring Branch,
Welfare, Nelson City, Center Point, Waring and Flugrath.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3010 9835 2973 9835 2972 9837 2975 9841
      2974 9842 2973 9842 2973 9843 2974 9845
      2973 9848 2974 9853 2976 9855 2974 9858
      2979 9911 2989 9916 3010 9901
TIME...MOT...LOC 0328Z 270DEG 47KT 2989 9891 

TORNADO...POSSIBLE
HAIL...1.00IN
WIND...60MPH
 
$$

EW

970 
WWUS54 KEWX 230345
SVSEWX

Severe Weather Statement
National Weather Service Austin/San Antonio TX
1045 PM CDT Mon Mar 22 2021

TXC019-230354-
/O.CAN.KEWX.SV.W.0007.000000T0000Z-210323T0400Z/
Bandera TX-
1045 PM CDT Mon Mar 22 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN BANDERA COUNTY IS
CANCELLED...
    
The severe thunderstorm which prompted the warning has moved out of 
the warned area. Therefore, the warning has been cancelled.

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

LAT...LON 2973 9835 2972 9837 2975 9841 2973 9842
      2974 9845 2973 9848 2974 9853 2976 9855
      2974 9858 2977 9889 2982 9899 2989 9897
      3010 9881 3010 9835
TIME...MOT...LOC 0344Z 270DEG 47KT 2989 9866 

$$

TXC031-091-259-265-230400-
/O.CON.KEWX.SV.W.0007.000000T0000Z-210323T0400Z/
Kerr TX-Blanco TX-Kendall TX-Comal TX-
1045 PM CDT Mon Mar 22 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1100 PM CDT
FOR SOUTHEASTERN KERR...SOUTHWESTERN BLANCO...KENDALL AND
NORTHWESTERN COMAL COUNTIES...

At 1044 PM CDT, a severe thunderstorm was located near Kreutzberg, or
8 miles northeast of Boerne, moving east at 55 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...
Boerne, Comfort, Blanco, Canyon Lake, Fair Oaks Ranch, Bulverde,
Walnut Grove, Guadalupe River State Park, Kendalia, Smithson Valley,
Sisterdale, Kreutzberg, Spring Branch, Welfare, Nelson City, Waring,
Flugrath, Twin Sisters, Bergheim and Kronkosky State Natural Area.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 2973 9835 2972 9837 2975 9841 2973 9842
      2974 9845 2973 9848 2974 9853 2976 9855
      2974 9858 2977 9889 2982 9899 2989 9897
      3010 9881 3010 9835
TIME...MOT...LOC 0344Z 270DEG 47KT 2989 9866 

TORNADO...POSSIBLE
HAIL...1.00IN
WIND...60MPH
 
$$

EW

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 22, 8:32 PM CDT	Severe Thunderstorm Warning	EWX	Burnet, Llano	58 min
Mar 22, 9:02 PM CDT	Special Weather Statement	EWX	Blanco, Gillespie, Llano	43 min
Mar 22, 9:14 PM CDT	Severe Thunderstorm Warning	EWX	Burnet, Llano, Williamson	61 min
Mar 22, 9:16 PM CDT	Severe Thunderstorm Warning	EWX	Blanco, Burnet, Gillespie, Llano	59 min
Mar 22, 9:58 PM CDT	Severe Thunderstorm Warning	EWX	Burnet, Williamson	62 min
Mar 22, 10:11 PM CDT	Severe Thunderstorm Warning	EWX	Blanco, Burnet, Gillespie, Hays, Travis	64 min
Mar 22, 10:26 PM CDT	Tornado Warning	EWX	Williamson	27 min
Mar 22, 10:34 PM CDT	Special Weather Statement	EWX	Gillespie	41 min
Mar 22, 10:56 PM CDT	Severe Thunderstorm Warning	EWX	Williamson	41 min
Mar 22, 10:57 PM CDT	Special Weather Statement	EWX	Comal, Hays, Kendall	48 min
Mar 22, 11:02 PM CDT	Special Weather Statement	EWX	Travis	58 min
Mar 22, 11:31 PM CDT	Severe Thunderstorm Warning	EWX	Bandera, Edwards, Medina, Real, Uvalde	59 min
Mar 22, 11:34 PM CDT	Special Weather Statement	EWX	Bandera, Kendall, Kerr	41 min
Mar 22, 11:44 PM CDT	Severe Thunderstorm Warning	EWX	Bandera, Gillespie, Kendall, Kerr, Medina	61 min
Mar 22, 11:55 PM CDT	Special Weather Statement	EWX	Bastrop	65 min
Mar 23, 12:25 AM CDT	Special Weather Statement	EWX	Lee	65 min
Mar 23, 12:25 AM CDT	Severe Thunderstorm Warning	EWX	Bandera, Medina, Uvalde	65 min
Mar 23, 12:35 AM CDT	Severe Thunderstorm Warning	EWX	Bandera, Bexar, Blanco, Comal, Hays, Kendall and 1 more	55 min
Mar 23, 1:06 AM CDT	Tornado Warning	EWX	Comal, Guadalupe, Hays	24 min
Mar 23, 1:13 AM CDT	Severe Thunderstorm Warning	EWX	Bandera, Bexar, Comal, Guadalupe, Kendall, Medina and 1 more	62 min
Mar 23, 1:19 AM CDT	Special Weather Statement	EWX	Medina	41 min
Mar 23, 1:26 AM CDT	Severe Thunderstorm Warning	EWX	Bastrop, Caldwell, Comal, Gonzales, Guadalupe, Hays and 1 more	64 min
Mar 23, 1:48 AM CDT	Severe Thunderstorm Warning	EWX	Atascosa, Bexar, Frio, Medina	34 min
Mar 23, 1:58 AM CDT	Severe Thunderstorm Warning	EWX	Gonzales, Guadalupe	32 min
Mar 23, 2:13 AM CDT	Severe Thunderstorm Warning	EWX	Bexar, Gonzales, Guadalupe, Karnes, Wilson	26 min
Mar 23, 2:16 AM CDT	Severe Thunderstorm Warning	EWX	Bastrop, Caldwell, Fayette, Gonzales, Guadalupe, Lavaca and 1 more	59 min
Mar 23, 3:03 AM CDT	Severe Thunderstorm Warning	EWX	Fayette, Lavaca	33 min
Mar 23, 3:43 AM CDT	Special Weather Statement	EWX	DeWitt, Lavaca	47 min
Mar 23, 4:07 AM CDT	Severe Thunderstorm Warning	EWX	Lavaca	38 min

Nearby

Severe Thunderstorm Warnings in Texas, 2021 Every 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.