Alert archive / Texas / Severe Thunderstorm Warnings in 2011
Severe Thunderstorm Warning 2, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this severe thunderstorm warning at Mar 26, 2011, 3:51 PM CDT for Blanco County, Hays County, Travis County, Texas. It was in force for 39 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
- Mar 26, 2011, 3:51 PM CDT (20:51 UTC)
- Expired
- Mar 26, 2011, 4:30 PM CDT
- In force
- 39 min
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Storm-based polygon
Counties Blanco County, TX, Hays County, TX, Travis County, TX
The radar
The Austin/San Antonio radar (KEWX), 70 km from the middle of the area, began a volume at 20:52 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 |
|---|---|---|---|
| Mar 26, 4:05 PM CDT | HAIL 0.25 | Pedernales Falls State, TX | PEA SIZED HAIL FALLING FOR SEVERAL MINUTES. |
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, 8.9 hours before the alert went out and 271 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
- 1782 J/kg
- Mixed-layer CIN
- -227 J/kg
- Mixed-layer LCL
- 890 m above ground
- 0-6 km bulk shear
- 47 kt
- 0-1 km storm-relative helicity
- 163 m²/s²
- 0-3 km storm-relative helicity
- 185 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 2.8
The text
As transmitted, in the capitals the NWS used until 2016.
941 WUUS54 KEWX 262051 SVREWX TXC031-209-453-262130- /O.NEW.KEWX.SV.W.0002.110326T2051Z-110326T2130Z/ BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 351 PM CDT SAT MAR 26 2011 THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... EAST CENTRAL BLANCO COUNTY... NORTHWESTERN HAYS COUNTY... EXTREME WEST CENTRAL TRAVIS COUNTY... * UNTIL 430 PM CDT. * AT 348 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 NEAR PEDERNALES FALLS STATE PARK...OR 10 MILES SOUTH OF ROUND MOUNTAIN...AND MOVING EAST AT 15 MPH. * THE SEVERE THUNDERSTORM WILL OTHERWISE IMPACT MAINLY RURAL AREAS OF THE INDICATED COUNTIES. 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 3037 9816 3024 9812 3024 9839 3032 9840 TIME...MOT...LOC 2052Z 263DEG 15KT 3029 9830 $$
2 follow-up statements
840 WWUS54 KEWX 262116 SVSEWX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 416 PM CDT SAT MAR 26 2011 TXC031-209-453-262130- /O.CON.KEWX.SV.W.0002.000000T0000Z-110326T2130Z/ TRAVIS TX-BLANCO TX-HAYS TX- 416 PM CDT SAT MAR 26 2011 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 430 PM CDT FOR EXTREME NORTHWESTERN HAYS...EAST CENTRAL BLANCO AND EXTREME WEST CENTRAL TRAVIS COUNTIES... AT 412 PM CDT...NWS METEOROLOGISTS CONTINUED TO DETECT A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR PEDERNALES FALLS STATE PARK...OR 11 MILES NORTHWEST OF DRIPPING SPRINGS...MOVING EAST AT 15 MPH. THE SEVERE THUNDERSTORM WILL OTHERWISE REMAIN OVER MAINLY RURAL AREAS OF THE INDICATED COUNTIES. LAT...LON 3027 9813 3029 9829 3035 9826 3037 9816 TIME...MOT...LOC 2116Z 263DEG 15KT 3031 9819 $$
875 WWUS54 KEWX 262125 SVSEWX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 425 PM CDT SAT MAR 26 2011 TXC031-209-453-262134- /O.EXP.KEWX.SV.W.0002.000000T0000Z-110326T2130Z/ TRAVIS TX-BLANCO TX-HAYS TX- 425 PM CDT SAT MAR 26 2011 ...THE SEVERE THUNDERSTORM WARNING FOR EXTREME NORTHWESTERN HAYS... EAST CENTRAL BLANCO AND EXTREME WEST CENTRAL TRAVIS COUNTIES WILL EXPIRE AT 430 PM CDT... A STRONG THUNDERSTORM CONTINUES TO MOVE FROM EASTERN BLANCO AND NORTHERN HAYS COUNTY INTO WESTERN TRAVIS COUNTY. THIS STORM IS CURRENTLY BELOW SEVERE LEVELS...BUT COULD RE-STRENGTHEN AT ANY TIME. LAT...LON 3027 9813 3029 9829 3035 9826 3037 9816 TIME...MOT...LOC 2124Z 263DEG 15KT 3031 9815 $$
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.