Alert archive / Texas / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 76, NWS Austin/San Antonio, TX

May 10, 2012Edwards County, Val Verde County, Texas

NWS Austin/San Antonio, TX issued this severe thunderstorm warning at May 10, 2012, 7:19 AM CDT for Edwards County, Val Verde County, Texas. It was in force for 44 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 10, 2012, 7:19 AM CDT (12:19 UTC)
Expired: May 10, 2012, 8:03 AM CDT
In force: 44 min
Issued by: NWS Austin/San Antonio, TX
Area: Storm-based polygon

Counties Edwards County, TX, Val Verde County, TX

The radar

The Laughlin AFB radar (KDFX), 111 km from the middle of the area, began a volume at 12:21 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
May 10, 5:42 AM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Del Rio, TX (KDRT), launched 12:00Z, 0.3 hours before the alert went out and 98 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: 1149 J/kg
Mixed-layer CIN: -10 J/kg
Mixed-layer LCL: 663 m above ground
0-6 km bulk shear: 56 kt
0-1 km storm-relative helicity: 111 m²/s²
0-3 km storm-relative helicity: 185 m²/s²
Significant tornado parameter: 1.7
Supercell composite: 7.4

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

709 
WUUS54 KEWX 101219
SVREWX
TXC137-465-101315-
/O.NEW.KEWX.SV.W.0076.120510T1219Z-120510T1315Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
719 AM CDT THU MAY 10 2012

THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHWESTERN EDWARDS COUNTY...
  VAL VERDE COUNTY...

* UNTIL 815 AM CDT.

* AT 716 AM CDT...NWS METEOROLOGISTS HAVE DETECTED A SEVERE
  THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND DAMAGING
  WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED OVER VAL VERDE
  COUNTY...OR 9 MILES NORTH OF LOMA ALTA...AND MOVING NORTHEAST AT 30
  MPH.

* THE SEVERE THUNDERSTORM WILL CROSS RURAL STRETCHES OF HIGHWAY 277 
  AT BETWEEN 5 AND 20 MILES NORTH OF LOMA ALTA THROUGH 8 AM.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS CAN PRODUCE TORNADOES. A SEVERE THUNDERSTORM 
WATCH REMAINS IN EFFECT UNTIL 100 PM CDT THURSDAY AFTERNOON FOR 
SOUTH CENTRAL TEXAS.

&&

LAT...LON 3029 10055 3029 10042 3028 10042 2996 10077
      3009 10088 3030 10077 3030 10056
TIME...MOT...LOC 1218Z 216DEG 28KT 3006 10078

$$

2 follow-up statements

940 
WWUS54 KEWX 101236
SVSEWX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
736 AM CDT THU MAY 10 2012

TXC137-465-101315-
/O.CON.KEWX.SV.W.0076.000000T0000Z-120510T1315Z/
EDWARDS TX-VAL VERDE TX-
736 AM CDT THU MAY 10 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 815 AM CDT
FOR VAL VERDE AND NORTHWESTERN EDWARDS COUNTIES...

AT 731 AM CDT...NWS METEOROLOGISTS CONTINUED TO DETECT A SEVERE
THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND DAMAGING
WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED OVER NORTHERN VAL
VERDE COUNTY...OR 16 MILES NORTH OF LOMA ALTA...MOVING NORTHEAST AT
30 MPH.

THE SEVERE THUNDERSTORM WILL CROSS RURAL STRETCHES OF HIGHWAY 277   
AT BETWEEN 10 AND 20 MILES NORTH OF LOMA ALTA THROUGH 8 AM.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 100 PM CDT
THURSDAY AFTERNOON FOR SOUTH CENTRAL TEXAS.

&&

LAT...LON 3029 10055 3029 10042 3028 10042 3002 10073
      3015 10081 3030 10077 3030 10056
TIME...MOT...LOC 1236Z 216DEG 28KT 3017 10068

$$

160 
WWUS54 KEWX 101303
SVSEWX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
803 AM CDT THU MAY 10 2012

TXC137-465-101312-
/O.CAN.KEWX.SV.W.0076.000000T0000Z-120510T1315Z/
EDWARDS TX-VAL VERDE TX-
803 AM CDT THU MAY 10 2012

...THE SEVERE THUNDERSTORM WARNING FOR VAL VERDE AND NORTHWESTERN
EDWARDS COUNTIES IS CANCELLED...

THE SEVERE THUNDERSTORM THAT PROMPTED THE WARNING HAS MOVED INTO 
SUTTON COUNTY.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 100 PM CDT
THURSDAY AFTERNOON FOR SOUTH CENTRAL TEXAS.

LAT...LON 3029 10055 3029 10042 3028 10042 3002 10073
      3015 10081 3030 10077 3030 10056
TIME...MOT...LOC 1302Z 216DEG 28KT 3033 10054

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
May 10, 5:21 AM CDT	Severe Thunderstorm Warning	EWX	Val Verde	54 min
May 10, 6:12 AM CDT	Severe Thunderstorm Warning	EWX	Val Verde	63 min
May 10, 9:29 AM CDT	Severe Thunderstorm Warning	EWX	Dimmit, Frio, Zavala	61 min
May 10, 10:30 AM CDT	Severe Thunderstorm Warning	EWX	Frio	60 min
May 10, 10:33 AM CDT	Areal Flood Advisory	EWX	Frio	117 min
May 10, 11:17 AM CDT	Severe Thunderstorm Warning	EWX	Atascosa, Frio	58 min
May 10, 11:32 AM CDT	Severe Thunderstorm Warning	EWX	Atascosa, Wilson	58 min
May 10, 12:02 PM CDT	Flash Flood Warning	EWX	Val Verde	3 hr
May 10, 12:14 PM CDT	Severe Thunderstorm Warning	EWX	Atascosa, Frio	31 min
May 10, 12:20 PM CDT	Areal Flood Advisory	EWX	Atascosa, Frio	2 hr
May 10, 12:40 PM CDT	Areal Flood Advisory	EWX	Bandera, Edwards, Kerr, Kinney, Real, Uvalde	110 min
May 10, 1:04 PM CDT	Severe Thunderstorm Warning	EWX	Karnes, Wilson	56 min
May 10, 1:15 PM CDT	Tornado Warning	EWX	Gonzales, Karnes, Wilson	45 min
May 10, 1:42 PM CDT	Tornado Warning	EWX	Atascosa	33 min
May 10, 1:57 PM CDT	Tornado Warning	EWX	DeWitt, Gonzales, Karnes, Wilson	33 min
May 10, 2:19 PM CDT	Flash Flood Warning	EWX	Atascosa, DeWitt, Gonzales, Karnes, Wilson	3 hr
May 10, 2:24 PM CDT	Severe Thunderstorm Warning	EWX	Karnes	51 min
May 10, 2:42 PM CDT	Tornado Warning	EWX	Karnes	48 min
May 10, 2:49 PM CDT	Flash Flood Warning	EWX	Bandera, Edwards, Kerr, Real, Uvalde	3 hr
May 10, 3:05 PM CDT	Tornado Warning	EWX	Wilson	40 min
May 10, 3:31 PM CDT	Tornado Warning	EWX	Karnes	29 min
May 10, 3:40 PM CDT	River Flood Warning	EWX	Val Verde	31 hr
May 10, 3:45 PM CDT	Areal Flood Advisory	EWX	DeWitt, Fayette, Gonzales, Lavaca	105 min
May 10, 3:57 PM CDT	Tornado Warning	EWX	DeWitt, Karnes, Wilson	33 min
May 10, 4:39 PM CDT	Flash Flood Warning	EWX	Bandera, Gillespie, Kerr	81 min
May 10, 4:52 PM CDT	Severe Thunderstorm Warning	EWX	DeWitt, Gonzales, Karnes	29 min
May 10, 5:58 PM CDT	Flash Flood Warning	EWX	Bandera, Blanco, Burnet, Edwards, Gillespie, Kendall and 4 more	3 hr
May 10, 5:58 PM CDT	Severe Thunderstorm Warning	EWX	Dimmit, Maverick, Uvalde, Zavala	47 min
May 10, 6:11 PM CDT	Areal Flood Advisory	EWX	DeWitt, Fayette, Karnes, Lavaca	109 min
May 10, 6:41 PM CDT	Severe Thunderstorm Warning	EWX	Dimmit, Frio, Zavala	49 min

Nearby

Severe Thunderstorm Warnings in Texas, 2012 Every severe thunderstorm warning in 2012

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.