Alert archive / Texas / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 103, NWS Austin/San Antonio, TX

May 4, 2021Bastrop County, Fayette County, Lee County, Texas

NWS Austin/San Antonio, TX issued this severe thunderstorm warning at May 4, 2021, 7:37 AM CDT for Bastrop County, Fayette County, Lee County, Texas. It was in force for 53 min. 2 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: May 4, 2021, 7:37 AM CDT (12:37 UTC)
Expired: May 4, 2021, 8:30 AM CDT
In force: 53 min
Issued by: NWS Austin/San Antonio, TX
Area: Storm-based polygon
Hail: 1.25 in
Wind: 50.0 mph

Counties Bastrop County, TX, Fayette County, TX, Lee County, TX

The radar

The Ft Hood radar (KGRK), 80 km from the middle of the area, began a volume at 12:37 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.

What was reported inside it

Time	Report	Where	Remark
May 4, 7:38 AM CDT	HAIL 0.5	8 Ene Dale, TX
May 4, 7:55 AM CDT	HAIL 1.25	1 E Smithville, TX	NEAR SMITHVILLE MIDDLE SCHOOL.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Corpus Christi, TX (KCRP), launched 12:00Z, 0.6 hours before the alert went out and 265 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: 2898 J/kg
Mixed-layer CIN: -186 J/kg
Mixed-layer LCL: 493 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: 116 m²/s²
0-3 km storm-relative helicity: 100 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 2.6

Open this sounding in Storm Lab

The text

As transmitted.

802 
WUUS54 KEWX 041237
SVREWX
TXC021-149-287-041330-
/O.NEW.KEWX.SV.W.0103.210504T1237Z-210504T1330Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Austin/San Antonio TX
737 AM CDT Tue May 4 2021

The National Weather Service in Austin San Antonio has issued a

* Severe Thunderstorm Warning for...
  Bastrop County in south central Texas...
  Southeastern Lee County in south central Texas...
  Northern Fayette County in south central Texas...

* Until 830 AM CDT.

* At 736 AM CDT, a severe thunderstorm was located near Rosanky, or
  near Bastrop, moving east at 30 mph.

  HAZARD...Half dollar size hail.

  SOURCE...Radar indicated.

  IMPACT...Damage to vehicles is expected.

* Locations impacted include...
  Bastrop, Giddings, La Grange, Smithville, Round Top, Fedor, Paige,
  Camp Swift, Circle D-KC Estates, Cedar Creek, Rosanky, Wyldwood,
  Upton, Carmine, Phelan, Bastrop State Park, Hills Prairie,
  Northrup, Rutersville and Rockne.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 2988 9672 2986 9741 3004 9761 3010 9760
      3040 9691 3023 9674 3020 9674 3016 9679
      3014 9676 3016 9668
TIME...MOT...LOC 1236Z 257DEG 26KT 3002 9732 

HAIL...1.25IN
WIND...<50MPH
 
$$

HAMPSHIRE

4 follow-up statements

027 
WWUS54 KEWX 041247
SVSEWX

Severe Weather Statement
National Weather Service Austin/San Antonio TX
747 AM CDT Tue May 4 2021

TXC021-149-287-041330-
/O.CON.KEWX.SV.W.0103.000000T0000Z-210504T1330Z/
Bastrop TX-Lee TX-Fayette TX-
747 AM CDT Tue May 4 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 830 AM CDT
FOR BASTROP...SOUTHEASTERN LEE AND NORTHERN FAYETTE COUNTIES...

At 747 AM CDT, a severe thunderstorm was located near Smithville,
moving east at 30 mph.

HAZARD...Quarter size hail.

SOURCE...Radar indicated.

IMPACT...Damage to vehicles is expected.

Locations impacted include...
Bastrop, Giddings, La Grange, Smithville, Round Top, Fedor, Paige,
Camp Swift, Circle D-KC Estates, Cedar Creek, Rosanky, Wyldwood,
Upton, Carmine, Phelan, Bastrop State Park, Hills Prairie, Northrup,
Rutersville and Rockne.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 2988 9672 2990 9743 3013 9752 3040 9691
      3023 9674 3020 9674 3016 9679 3014 9676
      3016 9668
TIME...MOT...LOC 1247Z 257DEG 26KT 3004 9722 

HAIL...1.00IN
WIND...<50MPH
 
$$

HAMPSHIRE

516 
WWUS54 KEWX 041254
SVSEWX

Severe Weather Statement
National Weather Service Austin/San Antonio TX
754 AM CDT Tue May 4 2021

TXC021-149-287-041330-
/O.CON.KEWX.SV.W.0103.000000T0000Z-210504T1330Z/
Bastrop TX-Lee TX-Fayette TX-
754 AM CDT Tue May 4 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 830 AM CDT
FOR EAST CENTRAL BASTROP...SOUTHEASTERN LEE AND NORTHEASTERN FAYETTE
COUNTIES...

At 754 AM CDT, a severe thunderstorm was located near Smithville,
moving east at 30 mph.

HAZARD...Quarter size hail.

SOURCE...Radar indicated.

IMPACT...Damage to vehicles is expected.

Locations impacted include...
Giddings, La Grange, Smithville, Round Top, Paige, Circle D-KC
Estates, Carmine, Bastrop State Park, Northrup, Rutersville,
Warrenton, Ledbetter, Waldeck, Loebau, Plum, Buescher State Park,
Hills, Lincoln, Nechanitz and Manheim.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 2988 9672 2994 9717 3013 9726 3040 9691
      3023 9674 3020 9674 3016 9679 3014 9676
      3016 9668
TIME...MOT...LOC 1254Z 257DEG 26KT 3005 9716 

HAIL...1.00IN
WIND...<50MPH
 
$$

HAMPSHIRE

389 
WWUS54 KEWX 041311
SVSEWX

Severe Weather Statement
National Weather Service Austin/San Antonio TX
811 AM CDT Tue May 4 2021

TXC021-041321-
/O.CAN.KEWX.SV.W.0103.000000T0000Z-210504T1330Z/
Bastrop TX-
811 AM CDT Tue May 4 2021

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

LAT...LON 2988 9672 2990 9688 2993 9705 3003 9705
      3005 9702 3012 9704 3021 9704 3036 9687
      3023 9674 3020 9674 3016 9679 3014 9677
      3016 9670 3015 9668
TIME...MOT...LOC 1311Z 262DEG 29KT 3005 9699 

$$

TXC149-287-041330-
/O.CON.KEWX.SV.W.0103.000000T0000Z-210504T1330Z/
Lee TX-Fayette TX-
811 AM CDT Tue May 4 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 830 AM CDT
FOR SOUTHEASTERN LEE AND NORTHEASTERN FAYETTE COUNTIES...

At 811 AM CDT, a severe thunderstorm was located 10 miles south of
Giddings, moving east at 35 mph.

HAZARD...Quarter size hail.

SOURCE...Radar indicated.

IMPACT...Damage to vehicles is expected.

Locations impacted include...
Giddings, La Grange, Round Top, Carmine, Serbin, Northrup,
Rutersville, Warrenton, Ledbetter, Waldeck, Loebau, Rabbs Prairie,
Plum, Warda, Walhalla, West Point, Winchester, Nechanitz, Lincoln and
Old Dime Box.

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.

&&

LAT...LON 2988 9672 2990 9688 2993 9705 3003 9705
      3005 9702 3012 9704 3021 9704 3036 9687
      3023 9674 3020 9674 3016 9679 3014 9677
      3016 9670 3015 9668
TIME...MOT...LOC 1311Z 262DEG 29KT 3005 9699 

HAIL...1.00IN
WIND...<50MPH
 
$$

BRADY

096 
WWUS54 KEWX 041326
SVSEWX

Severe Weather Statement
National Weather Service Austin/San Antonio TX
826 AM CDT Tue May 4 2021

TXC149-287-041336-
/O.EXP.KEWX.SV.W.0103.000000T0000Z-210504T1330Z/
Lee TX-Fayette TX-
826 AM CDT Tue May 4 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN LEE AND
NORTHEASTERN FAYETTE COUNTIES WILL EXPIRE AT 830 AM CDT...
                
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning will be allowed to expire.  However small
hail, gusty winds and heavy rain are still possible with this
thunderstorm.

LAT...LON 2988 9672 2990 9688 2993 9705 3003 9705
      3005 9702 3012 9704 3021 9704 3036 9687
      3023 9674 3020 9674 3016 9679 3014 9677
      3016 9670 3015 9668
TIME...MOT...LOC 1326Z 257DEG 26KT 3007 9687 

$$

BRADY

The office that day

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

Issued	Product	Office	Counties	Lasted
May 3, 7:10 PM CDT	Special Weather Statement	EWX	Kendall	50 min
May 3, 7:12 PM CDT	Severe Thunderstorm Warning	EWX	Bexar, Comal, Medina	63 min
May 3, 7:14 PM CDT	Severe Thunderstorm Warning	EWX	Bandera, Bexar, Blanco, Gillespie, Kendall, Kerr and 1 more	61 min
May 3, 7:30 PM CDT	Areal Flood Advisory	EWX	Bandera, Bexar, Comal, Kendall, Medina	3 hr
May 3, 7:49 PM CDT	Severe Thunderstorm Warning	EWX	Bexar, Comal, Guadalupe	56 min
May 3, 8:12 PM CDT	Severe Thunderstorm Warning	EWX	Blanco, Burnet, Gillespie, Kendall, Llano	48 min
May 3, 8:19 PM CDT	Areal Flood Advisory	EWX	Bexar, Guadalupe, Wilson	3 hr
May 3, 8:23 PM CDT	Severe Thunderstorm Warning	EWX	Bexar, Guadalupe, Wilson	22 min
May 3, 8:43 PM CDT	Severe Thunderstorm Warning	EWX	Bexar, Gonzales, Guadalupe, Wilson	62 min
May 3, 8:53 PM CDT	Special Weather Statement	EWX	Burnet	52 min
May 3, 8:58 PM CDT	Severe Thunderstorm Warning	EWX	Blanco, Burnet, Llano, Travis, Williamson	62 min
May 3, 9:16 PM CDT	Severe Thunderstorm Warning	EWX	Burnet, Llano, Travis, Williamson	41 min
May 3, 10:08 PM CDT	Severe Thunderstorm Warning	EWX	Burnet, Llano	30 min
May 4, 6:33 AM CDT	Special Weather Statement	EWX	Caldwell	42 min
May 4, 6:41 AM CDT	Severe Thunderstorm Warning	EWX	Bastrop, Caldwell, Hays, Travis	64 min
May 4, 7:25 AM CDT	Severe Thunderstorm Warning	EWX	Bastrop, Travis	50 min
May 4, 8:05 AM CDT	Severe Thunderstorm Warning	EWX	Bastrop, Lee, Travis, Williamson	13 min
May 4, 8:20 AM CDT	Special Weather Statement	EWX	Hays, Travis	40 min
May 4, 8:22 AM CDT	Special Weather Statement	EWX	Lee	38 min
May 4, 8:22 AM CDT	Special Weather Statement	EWX	Lee	38 min
May 4, 8:25 AM CDT	Special Weather Statement	EWX	Lee	35 min
May 4, 8:59 AM CDT	Special Weather Statement	EWX	Hays, Travis	46 min
May 4, 9:27 AM CDT	Special Weather Statement	EWX	Guadalupe	33 min
May 4, 9:48 AM CDT	Special Weather Statement	EWX	Bastrop	27 min
May 4, 9:58 AM CDT	Special Weather Statement	EWX	Caldwell	47 min
May 4, 10:04 AM CDT	Severe Thunderstorm Warning	EWX	Bastrop, Caldwell, Fayette	41 min
May 4, 10:38 AM CDT	Special Weather Statement	EWX	Bastrop	37 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.