Alert archive / Texas / Severe Thunderstorm Warnings in 2011
Severe Thunderstorm Warning 32, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this severe thunderstorm warning at May 11, 2011, 4:32 PM CDT for Blanco County, Burnet County, Llano County, Texas. It was in force for 43 min. 5 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 11, 2011, 4:32 PM CDT (21:32 UTC)
- Expired
- May 11, 2011, 5:15 PM CDT
- In force
- 43 min
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Storm-based polygon
Counties Blanco County, TX, Burnet County, TX, Llano County, TX
The radar
The Ft Hood radar (KGRK), 96 km from the middle of the area, began a volume at 21:33 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, 4:35 PM CDT | TSTM WND DMG | 1 Ne Kingsland, TX | LARGE TREE BRANCHES BLOWN DOWN... ROOF BLOWN OFF A BOAT DECK |
| May 11, 4:35 PM CDT | HAIL 0.25 | 1 Sw Kingsland, TX | |
| May 11, 4:40 PM CDT | HAIL 0.88 | 1 S Kingsland, TX | |
| May 11, 4:55 PM CDT | HAIL 0.25 | 6 Nnw Marble Falls, TX | |
| May 11, 5:00 PM CDT | HAIL 0.5 | 7 S Burnet, TX | PEA TO MARBLE SIZE HAIL |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
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 11, 3:46 PM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
The nearest sounding before it
Fort Worth, TX (KFWD), launched 12:00Z, 9.5 hours before the alert went out and 254 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
- 1949 J/kg
- Mixed-layer CIN
- -156 J/kg
- Mixed-layer LCL
- 622 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 244 m²/s²
- 0-3 km storm-relative helicity
- 274 m²/s²
- Significant tornado parameter
- 0.5
- Supercell composite
- 4.8
The text
As transmitted, in the capitals the NWS used until 2016.
681 WUUS54 KEWX 112132 SVREWX TXC031-053-299-112215- /O.NEW.KEWX.SV.W.0032.110511T2132Z-110511T2215Z/ BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 432 PM CDT WED MAY 11 2011 THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... EXTREME NORTHWESTERN BLANCO COUNTY... WESTERN BURNET COUNTY... SOUTHEASTERN LLANO COUNTY... * UNTIL 515 PM CDT. * AT 427 PM CDT...NWS METEOROLOGISTS HAVE DETECTED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL. THIS STORM WAS LOCATED 7 MILES SOUTH OF GAINESVILLE...OR 8 MILES SOUTHWEST OF KINGSLAND...AND MOVING NORTHEAST AT 25 MPH. * SOME LOCATIONS IN THE WARNING INCLUDE GRANITE SHOALS...INKS LAKE STATE PARK...BUCHANAN DAM...OATMEAL AND BURNET. PRECAUTIONARY/PREPAREDNESS ACTIONS... A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT WEDNESDAY EVENING FOR SOUTH CENTRAL TEXAS. && LAT...LON 3096 9830 3070 9808 3047 9855 3061 9868 TIME...MOT...LOC 2132Z 230DEG 21KT 3060 9853 $$
3 follow-up statements
834 WWUS54 KEWX 112154 SVSEWX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 454 PM CDT WED MAY 11 2011 TXC031-053-299-112215- /O.CON.KEWX.SV.W.0032.000000T0000Z-110511T2215Z/ BURNET TX-LLANO TX-BLANCO TX- 454 PM CDT WED MAY 11 2011 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 515 PM CDT FOR EXTREME NORTHWESTERN BLANCO...SOUTHEASTERN LLANO AND WESTERN BURNET COUNTIES... AT 448 PM CDT...NWS METEOROLOGISTS CONTINUED TO DETECT A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL. THIS STORM WAS LOCATED 6 MILES NORTHEAST OF GRANITE SHOALS...OR 6 MILES NORTHWEST OF MARBLE FALLS...MOVING NORTHEAST AT 25 MPH. DIME TO NICKLE SIZE HAIL WAS REPORTED AT KINGSLAND AROUND 440 PM CDT. SOME LOCATIONS IN THE WARNING AREA INCLUDE BURNET AND OATMEAL. PRECAUTIONARY/PREPAREDNESS ACTIONS... A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT WEDNESDAY EVENING FOR SOUTH CENTRAL TEXAS. && LAT...LON 3096 9830 3070 9808 3047 9855 3061 9868 TIME...MOT...LOC 2153Z 230DEG 21KT 3067 9830 $$
583 WWUS54 KEWX 112158 SVSEWX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 458 PM CDT WED MAY 11 2011 TXC031-112208- /O.CAN.KEWX.SV.W.0032.000000T0000Z-110511T2215Z/ BLANCO TX- 458 PM CDT WED MAY 11 2011 ...THE SEVERE THUNDERSTORM WARNING FOR EXTREME NORTHWESTERN BLANCO COUNTY IS CANCELLED... A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT WEDNESDAY EVENING FOR SOUTH CENTRAL TEXAS. LAT...LON 3074 9854 3096 9830 3070 9808 3055 9838 TIME...MOT...LOC 2158Z 230DEG 21KT 3068 9825 $$ TXC053-299-112215- /O.CON.KEWX.SV.W.0032.000000T0000Z-110511T2215Z/ BURNET TX-LLANO TX- 458 PM CDT WED MAY 11 2011 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 515 PM CDT FOR EAST CENTRAL LLANO AND WESTERN BURNET COUNTIES... AT 452 PM CDT...NWS METEOROLOGISTS CONTINUED TO DETECT A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL. THIS STORM WAS LOCATED 7 MILES SOUTHEAST OF INKS LAKE STATE PARK...OR NEAR MARBLE FALLS...MOVING NORTHEAST AT 25 MPH. THE SEVERE THUNDERSTORM WILL BE NEAR... BURNET BY 510 PM CDT... OATMEAL BY 515 PM CDT... PRECAUTIONARY/PREPAREDNESS ACTIONS... A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT WEDNESDAY EVENING FOR SOUTH CENTRAL TEXAS. && LAT...LON 3074 9854 3096 9830 3070 9808 3055 9838 TIME...MOT...LOC 2158Z 230DEG 21KT 3068 9825 $$
549 WWUS54 KEWX 112209 SVSEWX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 509 PM CDT WED MAY 11 2011 TXC299-112219- /O.CAN.KEWX.SV.W.0032.000000T0000Z-110511T2215Z/ LLANO TX- 509 PM CDT WED MAY 11 2011 ...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL LLANO COUNTY IS CANCELLED... A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT WEDNESDAY EVENING FOR SOUTH CENTRAL TEXAS. LAT...LON 3068 9838 3082 9820 3070 9808 3057 9834 TIME...MOT...LOC 2209Z 260DEG 26KT 3069 9815 $$ TXC053-112215- /O.CON.KEWX.SV.W.0032.000000T0000Z-110511T2215Z/ BURNET TX- 509 PM CDT WED MAY 11 2011 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 515 PM CDT FOR CENTRAL BURNET COUNTY... AT 501 PM CDT...NWS METEOROLOGISTS CONTINUED TO DETECT A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL. THIS STORM WAS LOCATED 6 MILES SOUTH OF BURNET...MOVING EAST AT 30 MPH. THE SEVERE THUNDERSTORM WILL BE NEAR... OATMEAL BY 515 PM CDT... PRECAUTIONARY/PREPAREDNESS ACTIONS... A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT WEDNESDAY EVENING FOR SOUTH CENTRAL TEXAS. && LAT...LON 3068 9838 3082 9820 3070 9808 3057 9834 TIME...MOT...LOC 2209Z 260DEG 26KT 3069 9815 $$
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, 2:57 PM CDT | Severe Thunderstorm Warning | EWX | Kinney, Maverick, Zavala | 48 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, 4:42 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.