Alert archive / Texas / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 13, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this severe thunderstorm warning at Feb 3, 2012, 10:15 PM CST for Bexar County, Texas. It was in force for 30 min. 3 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
- Feb 3, 2012, 10:15 PM CST (04:15 UTC)
- Expired
- Feb 3, 2012, 10:45 PM CST
- In force
- 30 min
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Storm-based polygon
County Bexar County, TX
The radar
The Austin/San Antonio radar (KEWX), 48 km from the middle of the area, began a volume at 04:18 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 |
|---|---|---|---|
| Feb 3, 10:30 PM CST | HAIL 1 | 1 W Balcones Heights, TX | QUARTER SIZE NEAR BABCOCK AND 410. |
| Feb 3, 10:45 PM CST | HAIL 1 | Castle Hills, TX | QUARTER SIZE HAIL AND 1 INCH OF RAINFALL IN 30 MINUTES. |
| Feb 3, 10:55 PM CST | HAIL 1 | Castle Hills, TX |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Corpus Christi, TX (KCRP), launched 00:00Z, 4.3 hours before the alert went out and 227 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
- 2376 J/kg
- Mixed-layer CIN
- -24 J/kg
- Mixed-layer LCL
- 706 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- 99 m²/s²
- 0-3 km storm-relative helicity
- 145 m²/s²
- Significant tornado parameter
- 1.2
- Supercell composite
- 6.5
The text
As transmitted, in the capitals the NWS used until 2016.
450 WUUS54 KEWX 040415 SVREWX TXC029-040445- /O.NEW.KEWX.SV.W.0013.120204T0415Z-120204T0445Z/ BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 1015 PM CST FRI FEB 3 2012 THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... CENTRAL BEXAR COUNTY... * UNTIL 1045 PM CST. * AT 1012 PM CST...NWS METEOROLOGISTS HAVE DETECTED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL. THIS STORM WAS LOCATED NEAR LEON VALLEY...OR 7 MILES WEST OF SAN ANTONIO...AND MOVING EAST AT 20 MPH. * SOME LOCATIONS IN THE WARNING INCLUDE OLMOS PARK...ALAMO HEIGHTS... HILL COUNTRY VILLA...TERRELL HILLS...HOLLYWOOD PARK...WINDCREST... LIVE OAK AND KIRBY. 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 2964 9836 2943 9828 2935 9865 2952 9871 TIME...MOT...LOC 0415Z 252DEG 17KT 2945 9860 $$
1 follow-up statement
979 WWUS54 KEWX 040426 SVSEWX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 1026 PM CST FRI FEB 3 2012 TXC029-040445- /O.CON.KEWX.SV.W.0013.000000T0000Z-120204T0445Z/ BEXAR TX- 1026 PM CST FRI FEB 3 2012 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1045 PM CST FOR CENTRAL BEXAR COUNTY... AT 1018 PM CST...NWS METEOROLOGISTS CONTINUED TO DETECT A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR BALCONES HEIGHTS...OR NEAR SAN ANTONIO...MOVING EAST AT 20 MPH. SOME LOCATIONS IN THE WARNING AREA INCLUDE CASTLE HILLS...OLMOS PARK...ALAMO HEIGHTS...HILL COUNTRY VILLA...SAN ANTONIO INT AP... TERRELL HILLS...HOLLYWOOD PARK...MARTINEZ...WINDCREST...LIVE OAK AND KIRBY. PRECAUTIONARY/PREPAREDNESS ACTIONS... THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE IMMEDIATELY FOR DAMAGING WINDS...DESTRUCTIVE HAIL...AND DEADLY CLOUD TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER... PREFERABLY INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS. && LAT...LON 2964 9836 2943 9828 2937 9860 2953 9866 TIME...MOT...LOC 0426Z 252DEG 17KT 2947 9854 $$
The office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 3, 9:18 PM CST | Areal Flood Advisory | EWX | Bexar | 2 hr |
| Feb 3, 9:45 PM CST | Areal Flood Advisory | EWX | Williamson | 105 min |
| Feb 3, 10:02 PM CST | Flash Flood Warning | EWX | Bexar | 118 min |
| Feb 3, 10:36 PM CST | Flash Flood Warning | EWX | Williamson | 114 min |
| Feb 3, 10:38 PM CST | Severe Thunderstorm Warning | EWX | Bexar | 37 min |
| Feb 3, 10:51 PM CST | Flash Flood Warning | EWX | Bexar | 3 hr |
| Feb 3, 11:15 PM CST | Severe Thunderstorm Warning | EWX | Bexar, Guadalupe | 60 min |
| Feb 4, 12:15 AM CST | Severe Thunderstorm Warning | EWX | Bexar, Guadalupe, Wilson | 45 min |
| Feb 4, 12:57 AM CST | Areal Flood Advisory | EWX | Burnet | 2 hr |
| Feb 4, 1:07 AM CST | Areal Flood Advisory | EWX | Hays, Travis | 113 min |
| Feb 4, 1:25 AM CST | Flash Flood Warning | EWX | Travis, Williamson | 3 hr |
| Feb 4, 1:54 AM CST | Areal Flood Advisory | EWX | Bexar, Guadalupe, Wilson | 2 hr |
| Feb 4, 2:32 AM CST | Areal Flood Advisory | EWX | Bandera, Medina | 118 min |
| Feb 4, 2:42 AM CST | Flash Flood Warning | EWX | Hays, Travis | 3 hr |
| Feb 4, 3:11 AM CST | Areal Flood Advisory | EWX | Bandera, Bexar, Medina | 109 min |
| Feb 4, 3:27 AM CST | Areal Flood Advisory | EWX | Bastrop, Caldwell, Hays, Lee, Travis | 2 hr |
| Feb 4, 4:06 AM CST | Areal Flood Advisory | EWX | Bexar, Comal, Guadalupe | 114 min |
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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.