Alert archive / Texas / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 27, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this severe thunderstorm warning at Mar 19, 2012, 6:45 PM CDT for Frio County, Medina County, Texas. It was in force for 60 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Mar 19, 2012, 6:45 PM CDT (23:45 UTC)
- Expired
- Mar 19, 2012, 7:45 PM CDT
- In force
- 60 min
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Storm-based polygon
Counties Frio County, TX, Medina County, TX
The radar
The Austin/San Antonio radar (KEWX), 111 km from the middle of the area, began a volume at 23:49 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.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Mar 19, 2:39 PM CDT | Tornado Watch | SPC | 7 hr |
| Mar 19, 6:21 PM CDT | Tornado Watch | SPC | 7 hr |
The nearest sounding before it
Del Rio, TX (KDRT), launched 12:00Z, 11.8 hours before the alert went out and 179 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
- 2784 J/kg
- Mixed-layer CIN
- -36 J/kg
- Mixed-layer LCL
- 528 m above ground
- 0-6 km bulk shear
- 47 kt
- 0-1 km storm-relative helicity
- 284 m²/s²
- 0-3 km storm-relative helicity
- 337 m²/s²
- Significant tornado parameter
- 4.3
- Supercell composite
- 18.4
The text
As transmitted, in the capitals the NWS used until 2016.
624 WUUS54 KEWX 192345 SVREWX TXC163-325-200045- /O.NEW.KEWX.SV.W.0027.120319T2345Z-120320T0045Z/ BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 645 PM CDT MON MAR 19 2012 THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... NORTHEASTERN FRIO COUNTY... SOUTHEASTERN MEDINA COUNTY... * UNTIL 745 PM CDT. * AT 644 PM CDT...NWS METEOROLOGISTS HAVE DETECTED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL. THIS STORM WAS LOCATED 9 MILES SOUTH OF YANCEY...OR 11 MILES NORTHWEST OF PEARSALL...AND MOVING NORTHEAST AT 20 MPH. * SOME LOCATIONS IN THE WARNING INCLUDE MOORE...BIG FOOT...BIRY... DEVINE...PEARSON...NOONAN...NATALIA AND CASTROVILLE. PRECAUTIONARY/PREPAREDNESS ACTIONS... A TORNADO WATCH IS IN EFFECT. SEVERE THUNDERSTORMS CAN PRODUCE TORNADOES. A TORNADO WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT MONDAY EVENING FOR SOUTH CENTRAL TEXAS. A TORNADO WATCH ALSO REMAINS IN EFFECT UNTIL 100 AM CDT TUESDAY MORNING FOR SOUTH CENTRAL TEXAS. && LAT...LON 2944 9883 2899 9882 2896 9922 2909 9931 TIME...MOT...LOC 2345Z 231DEG 19KT 2904 9917 $$
1 follow-up statement
152 WWUS54 KEWX 200039 SVSEWX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 739 PM CDT MON MAR 19 2012 TXC163-200049- /O.CAN.KEWX.SV.W.0027.000000T0000Z-120320T0045Z/ FRIO TX- 739 PM CDT MON MAR 19 2012 ...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN FRIO COUNTY IS CANCELLED... THE THUNDERSTORM HAS MOVED OUT OF FRIO COUNTY. AS A RESULT...THE WARNING IS CANCELLED. A TORNADO WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT MONDAY EVENING FOR SOUTH CENTRAL TEXAS. A TORNADO WATCH ALSO REMAINS IN EFFECT UNTIL 100 AM CDT TUESDAY MORNING FOR SOUTH CENTRAL TEXAS. LAT...LON 2944 9883 2914 9883 2913 9904 2924 9910 TIME...MOT...LOC 0039Z 231DEG 19KT 2922 9892 $$ TXC325-200045- /O.CON.KEWX.SV.W.0027.000000T0000Z-120320T0045Z/ MEDINA TX- 739 PM CDT MON MAR 19 2012 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 745 PM CDT FOR EAST CENTRAL MEDINA COUNTY... AT 737 PM CDT...NWS METEOROLOGISTS CONTINUED TO DETECT A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL. THIS STORM WAS LOCATED NEAR NOONAN...OR NEAR DEVINE...MOVING NORTHEAST AT 20 MPH. SOME LOCATIONS IN THE WARNING AREA INCLUDE NATALIA...PEARSON AND CASTROVILLE. PRECAUTIONARY/PREPAREDNESS ACTIONS... A TORNADO WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT MONDAY EVENING FOR SOUTH CENTRAL TEXAS. A TORNADO WATCH ALSO REMAINS IN EFFECT UNTIL 100 AM CDT TUESDAY MORNING FOR SOUTH CENTRAL TEXAS. && LAT...LON 2944 9883 2914 9883 2913 9904 2924 9910 TIME...MOT...LOC 0039Z 231DEG 19KT 2922 9892 $$
The office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 19, 2:30 PM CDT | Severe Thunderstorm Warning | EWX | Val Verde | 45 min |
| Mar 19, 3:06 PM CDT | Tornado Warning | EWX | Edwards, Val Verde | 39 min |
| Mar 19, 4:52 PM CDT | Severe Thunderstorm Warning | EWX | Edwards | 53 min |
| Mar 19, 5:18 PM CDT | Tornado Warning | EWX | Edwards | 42 min |
| Mar 19, 5:29 PM CDT | Severe Thunderstorm Warning | EWX | Medina, Uvalde | 49 min |
| Mar 19, 5:50 PM CDT | Severe Thunderstorm Warning | EWX | Frio, Medina, Zavala | 55 min |
| Mar 19, 5:53 PM CDT | Severe Thunderstorm Warning | EWX | Dimmit | 32 min |
| Mar 19, 6:03 PM CDT | Tornado Warning | EWX | Llano | 27 min |
| Mar 19, 6:07 PM CDT | Tornado Warning | EWX | Frio, Medina | 38 min |
| Mar 19, 6:10 PM CDT | Severe Thunderstorm Warning | EWX | Bandera, Kerr, Medina, Uvalde | 50 min |
| Mar 19, 6:23 PM CDT | Severe Thunderstorm Warning | EWX | Frio, Medina, Uvalde, Zavala | 67 min |
| Mar 19, 6:33 PM CDT | Severe Thunderstorm Warning | EWX | Bandera, Kerr, Real | 57 min |
| Mar 19, 6:54 PM CDT | Severe Thunderstorm Warning | EWX | Gillespie, Kerr | 55 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.