Alert archive / Texas / Severe Thunderstorm Warnings in 2011
Severe Thunderstorm Warning 91, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this severe thunderstorm warning at May 25, 2011, 1:44 AM CDT for Burnet County, Williamson County, Texas. It was in force for 46 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 25, 2011, 1:44 AM CDT (06:44 UTC)
- Expired
- May 25, 2011, 2:30 AM CDT
- In force
- 46 min
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Storm-based polygon
Counties Burnet County, TX, Williamson County, TX
The radar
The Ft Hood radar (KGRK), 63 km from the middle of the area, began a volume at 06:45 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 25, 2:11 AM CDT | HAIL 1 | 9 Nne Bertram, TX |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Fort Worth, TX (KFWD), launched 00:00Z, 6.7 hours before the alert went out and 231 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
- 2867 J/kg
- Mixed-layer CIN
- -16 J/kg
- Mixed-layer LCL
- 1457 m above ground
- 0-6 km bulk shear
- 69 kt
- 0-1 km storm-relative helicity
- 357 m²/s²
- 0-3 km storm-relative helicity
- 602 m²/s²
- Significant tornado parameter
- 6.2
- Supercell composite
- 44.3
The text
As transmitted, in the capitals the NWS used until 2016.
320 WUUS54 KEWX 250644 SVREWX TXC053-491-250730- /O.NEW.KEWX.SV.W.0091.110525T0644Z-110525T0730Z/ BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 144 AM CDT WED MAY 25 2011 THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... CENTRAL BURNET COUNTY... NORTHWESTERN WILLIAMSON COUNTY... * UNTIL 230 AM CDT. * AT 137 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 6 MILES NORTHWEST OF BURNET...AND MOVING EAST AT 30 MPH. * SOME LOCATIONS IN THE WARNING INCLUDE LAKE VICTOR...SHADY GROVE... BERTRAM...JOPPA...WATSON...MAHOMET...BRIGGS AND ANDICE. 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. A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 400 AM CDT WEDNESDAY MORNING FOR SOUTH CENTRAL TEXAS. && LAT...LON 3095 9786 3070 9773 3073 9834 3091 9834 TIME...MOT...LOC 0644Z 269DEG 27KT 3082 9825 $$
2 follow-up statements
195 WWUS54 KEWX 250707 SVSEWX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 207 AM CDT WED MAY 25 2011 TXC053-491-250730- /O.CON.KEWX.SV.W.0091.000000T0000Z-110525T0730Z/ BURNET TX-WILLIAMSON TX- 207 AM CDT WED MAY 25 2011 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 230 AM CDT FOR NORTHWESTERN WILLIAMSON AND CENTRAL BURNET COUNTIES... AT 158 AM CDT...NWS METEOROLOGISTS CONTINUED TO DETECT A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR SHADY GROVE AND NORTH OF HIGHWAY 29...OR 7 MILES NORTHWEST OF BERTRAM...MOVING EAST AT 30 MPH. SOME LOCATIONS IN THE WARNING AREA INCLUDE JOPPA...WATSON... MAHOMET...BRIGGS AND ANDICE. PRECAUTIONARY/PREPAREDNESS ACTIONS... A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 400 AM CDT WEDNESDAY MORNING FOR SOUTH CENTRAL TEXAS. && LAT...LON 3073 9822 3092 9821 3095 9786 3070 9773 TIME...MOT...LOC 0706Z 270DEG 24KT 3083 9806 $$
772 WWUS54 KEWX 250717 SVSEWX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 217 AM CDT WED MAY 25 2011 TXC053-491-250730- /O.CON.KEWX.SV.W.0091.000000T0000Z-110525T0730Z/ BURNET TX-WILLIAMSON TX- 217 AM CDT WED MAY 25 2011 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 230 AM CDT FOR NORTHWESTERN WILLIAMSON AND EAST CENTRAL BURNET COUNTIES... AT 211 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 NEAR JOPPA...OR 6 MILES NORTH OF BERTRAM...MOVING EAST AT 25 MPH. SOME LOCATIONS IN THE WARNING AREA INCLUDE MAHOMET...BRIGGS AND ANDICE. PRECAUTIONARY/PREPAREDNESS ACTIONS... A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 400 AM CDT WEDNESDAY MORNING FOR SOUTH CENTRAL TEXAS. && LAT...LON 3073 9811 3092 9810 3095 9786 3070 9773 TIME...MOT...LOC 0717Z 272DEG 22KT 3083 9798 $$
The office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 25, 12:29 AM CDT | Severe Thunderstorm Warning | EWX | Burnet, Llano | 46 min |
| May 25, 12:55 AM CDT | Severe Thunderstorm Warning | EWX | Burnet, Williamson | 25 min |
| May 25, 2:31 AM CDT | Severe Thunderstorm Warning | EWX | Burnet, Williamson | 44 min |
| May 25, 5:02 AM CDT | Severe Thunderstorm Warning | EWX | Travis | 28 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.