Alert archive / Texas / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 59, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this severe thunderstorm warning at May 4, 2012, 1:31 AM CDT for Maverick County, Zavala 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 4, 2012, 1:31 AM CDT (06:31 UTC)
- Expired
- May 4, 2012, 2:15 AM CDT
- In force
- 44 min
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Storm-based polygon
Counties Maverick County, TX, Zavala County, TX
The radar
The Laughlin AFB radar (KDFX), 51 km from the middle of the area, began a volume at 06:32 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 nearest sounding before it
Del Rio, TX (KDRT), launched 00:00Z, 6.5 hours before the alert went out and 85 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.
- Mixed-layer CAPE
- 3364 J/kg
- Mixed-layer CIN
- -58 J/kg
- Mixed-layer LCL
- 1573 m above ground
- 0-6 km bulk shear
- 29 kt
- 0-1 km storm-relative helicity
- 20 m²/s²
- 0-3 km storm-relative helicity
- 27 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 1.5
The text
As transmitted, in the capitals the NWS used until 2016.
514
WUUS54 KEWX 040631
SVREWX
TXC323-507-040715-
/O.NEW.KEWX.SV.W.0059.120504T0631Z-120504T0715Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
131 AM CDT FRI MAY 4 2012
THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
MAVERICK COUNTY...
EXTREME WEST CENTRAL ZAVALA COUNTY...
* UNTIL 215 AM CDT.
* AT 122 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 MAVERICK
COUNTY...OR 14 MILES NORTH OF EL INDIO...AND MOVING NORTHEAST AT 30
MPH.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE
IMMEDIATELY FOR DAMAGING WINDS...DESTRUCTIVE HAIL...AND DEADLY CLOUD
TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...
PREFERABLY INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS.
&&
LAT...LON 2890 10027 2895 10008 2869 10009 2866 10031
2879 10039
TIME...MOT...LOC 0630Z 208DEG 26KT 2876 10023
$$2 follow-up statements
037 WWUS54 KEWX 040657 SVSEWX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 157 AM CDT FRI MAY 4 2012 TXC323-507-040715- /O.CON.KEWX.SV.W.0059.000000T0000Z-120504T0715Z/ MAVERICK TX-ZAVALA TX- 157 AM CDT FRI MAY 4 2012 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 215 AM CDT FOR EXTREME WEST CENTRAL ZAVALA AND MAVERICK COUNTIES... AT 148 AM CDT...NWS METEOROLOGISTS CONTINUED TO DETECT A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED OVER MAVERICK COUNTY...OR 17 MILES WEST OF LA PRYOR...MOVING NORTHEAST AT 30 MPH. LAT...LON 2885 10028 2890 10027 2895 10008 2881 10009 TIME...MOT...LOC 0657Z 208DEG 26KT 2895 10009 $$
921 WWUS54 KEWX 040711 SVSEWX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 211 AM CDT FRI MAY 4 2012 TXC323-507-040720- /O.EXP.KEWX.SV.W.0059.000000T0000Z-120504T0715Z/ MAVERICK TX-ZAVALA TX- 211 AM CDT FRI MAY 4 2012 ...THE SEVERE THUNDERSTORM WARNING FOR EXTREME WEST CENTRAL ZAVALA AND MAVERICK COUNTIES WILL EXPIRE AT 215 AM CDT... THE STORM HAS WEAKENED AND MOVED NORTHEAST INTO NORTHWEST ZAVALA COUNTY. SMALL HAIL AND GUSTY WINDS ARE STILL POSSIBLE WITH THIS STORM. LAT...LON 2885 10028 2890 10027 2895 10008 2881 10009 TIME...MOT...LOC 0710Z 208DEG 26KT 2903 10004 $$
The office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 4, 12:46 AM CDT | Severe Thunderstorm Warning | EWX | Maverick | 29 min |
| May 4, 12:48 AM CDT | High Wind Warning | EWX | Kinney, Maverick, Val Verde | 2 hr |
Nearby
Severe Thunderstorm Warnings in Texas, 2012Every 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.