Alert archive / Texas / Severe Thunderstorm Warnings in 2011
Severe Thunderstorm Warning 29, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this severe thunderstorm warning at May 11, 2011, 2:57 PM CDT for Kinney County, Maverick County, Zavala County, Texas. It was in force for 48 min. 1 report 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 11, 2011, 2:57 PM CDT (19:57 UTC)
- Expired
- May 11, 2011, 3:45 PM CDT
- In force
- 48 min
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Storm-based polygon
Counties Kinney County, TX, Maverick County, TX, Zavala County, TX
The radar
The Laughlin AFB radar (KDFX), 44 km from the middle of the area, began a volume at 20:00 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 11, 3:12 PM CDT | HAIL 1.75 | Quemado, TX |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Del Rio, TX (KDRT), launched 12:00Z, 8.0 hours before the alert went out and 58 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
- 2847 J/kg
- Mixed-layer CIN
- 0 J/kg
- Mixed-layer LCL
- 565 m above ground
- 0-6 km bulk shear
- 45 kt
- 0-1 km storm-relative helicity
- 160 m²/s²
- 0-3 km storm-relative helicity
- 254 m²/s²
- Significant tornado parameter
- 3.3
- Supercell composite
- 15.6
The text
As transmitted, in the capitals the NWS used until 2016.
539
WUUS54 KEWX 111957
SVREWX
TXC271-323-507-112045-
/O.NEW.KEWX.SV.W.0029.110511T1957Z-110511T2045Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
257 PM CDT WED MAY 11 2011
THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
SOUTHERN KINNEY COUNTY...
MAVERICK COUNTY...
SOUTHWESTERN ZAVALA COUNTY...
* UNTIL 345 PM CDT.
* AT 251 PM 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 6 MILES NORTH OF
QUEMADO...AND MOVING SOUTHEAST AT 25 MPH.
* SOME LOCATIONS IN THE WARNING INCLUDE SPOFFORD...NORMANDY...
DARLING...PALOMA...EAGLE PASS AND ROSITA NORTH. THIS STORM WILL
MOVE SOUTH AND SOUTHEAST ALONG HIGHWAY 277.
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 2879 10056 2881 10055 2882 10058 2898 10067
2906 10067 2911 10071 2912 10071 2917 10053
2920 10015 2871 10002 2863 10046
TIME...MOT...LOC 1954Z 303DEG 24KT 2902 10064
$$2 follow-up statements
259
WWUS54 KEWX 112023
SVSEWX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
323 PM CDT WED MAY 11 2011
TXC271-507-112033-
/O.CAN.KEWX.SV.W.0029.000000T0000Z-110511T2045Z/
KINNEY TX-ZAVALA TX-
323 PM CDT WED MAY 11 2011
...THE SEVERE THUNDERSTORM WARNING FOR WEST CENTRAL ZAVALA AND
SOUTHERN KINNEY COUNTIES IS CANCELLED...
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 600 PM CDT
WEDNESDAY EVENING FOR SOUTH CENTRAL TEXAS.
LAT...LON 2876 10051 2880 10052 2884 10056 2898 10064
2901 10061 2905 10057 2907 10055 2907 10043
2907 10034 2875 10014 2867 10045
TIME...MOT...LOC 2023Z 309DEG 10KT 2898 10056
$$
TXC323-112045-
/O.CON.KEWX.SV.W.0029.000000T0000Z-110511T2045Z/
MAVERICK TX-
323 PM CDT WED MAY 11 2011
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 345 PM CDT
FOR MAVERICK COUNTY...
AT 322 PM 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 NEAR
QUEMADO...MOVING SOUTHEAST AT 15 MPH. THIS STORM HAS PRODUCED GOLF
BALL SIZE HAIL IN QUEMADO. THIS STORM WILL CONTINUE TO AFFECT THE
FAR NORTHWESTERN AREAS OF MAVERICK COUNTY. DRIVERS ALONG HIGHWAY
277 AND 131 NORTHWEST OF EAGLE PASS SHOULD EXPECT HAIL.
SOME LOCATIONS IN THE WARNING AREA INCLUDE SECO MINES...ELM
CREEK...LAUGHLIN AFB AUX FIELD...DARLING AND PALOMA.
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 2876 10051 2880 10052 2884 10056 2898 10064
2901 10061 2905 10057 2907 10055 2907 10043
2907 10034 2875 10014 2867 10045
TIME...MOT...LOC 2023Z 309DEG 10KT 2898 10056
$$042
WWUS54 KEWX 112043
SVSEWX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
343 PM CDT WED MAY 11 2011
TXC323-112051-
/O.EXP.KEWX.SV.W.0029.000000T0000Z-110511T2045Z/
MAVERICK TX-
343 PM CDT WED MAY 11 2011
...THE SEVERE THUNDERSTORM WARNING FOR MAVERICK COUNTY WILL EXPIRE AT
345 PM CDT...
THE SEVERE THUNDERSTORM ALONG THE RIO GRANDE JUST NORTHEAST OF EAGLE
PASS HAS WEAKENED BELOW SEVERE LIMITS.
LAT...LON 2876 10051 2880 10052 2884 10056 2898 10064
2901 10061 2905 10057 2907 10055 2907 10043
2907 10034 2875 10014 2867 10045
TIME...MOT...LOC 2041Z 309DEG 10KT 2895 10052
$$The office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 11, 2:03 PM CDT | Severe Thunderstorm Warning | EWX | Gillespie, Llano | 27 min |
| May 11, 2:41 PM CDT | Severe Thunderstorm Warning | EWX | Llano | 49 min |
| May 11, 3:28 PM CDT | Severe Thunderstorm Warning | EWX | Gillespie, Llano | 47 min |
| May 11, 3:57 PM CDT | Severe Thunderstorm Warning | EWX | Burnet, Gillespie, Llano | 48 min |
| May 11, 4:32 PM CDT | Severe Thunderstorm Warning | EWX | Blanco, Burnet, Llano | 43 min |
| May 11, 4:42 PM CDT | Severe Thunderstorm Warning | EWX | Burnet | 48 min |
| May 11, 5:12 PM CDT | Severe Thunderstorm Warning | EWX | Burnet, Travis, Williamson | 48 min |
| May 11, 5:29 PM CDT | Severe Thunderstorm Warning | EWX | Burnet, Travis, Williamson | 46 min |
| May 11, 6:28 PM CDT | Severe Thunderstorm Warning | EWX | Llano | 47 min |
Nearby
Severe Thunderstorm Warnings in Texas, 2011Every severe thunderstorm warning in 2011
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.