Alert archive / Texas / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 9, NWS Austin/San Antonio, TX

January 25, 2012Edwards County, Real County, Texas

NWS Austin/San Antonio, TX issued this severe thunderstorm warning at Jan 25, 2012, 12:20 AM CST for Edwards County, Real County, Texas. It was in force for 40 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: Jan 25, 2012, 12:20 AM CST (06:20 UTC)
Expired: Jan 25, 2012, 1:00 AM CST
In force: 40 min
Issued by: NWS Austin/San Antonio, TX
Area: Storm-based polygon

Counties Edwards County, TX, Real County, TX

The radar

The Laughlin AFB radar (KDFX), 98 km from the middle of the area, began a volume at 06:21 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
Jan 24, 10:05 PM CST	Tornado Watch	SPC	5 hr

The nearest sounding before it

Del Rio, TX (KDRT), launched 00:00Z, 6.3 hours before the alert went out and 118 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 619 J/kg
Mixed-layer CIN: -174 J/kg
Mixed-layer LCL: 573 m above ground
0-6 km bulk shear: 52 kt
0-1 km storm-relative helicity: 253 m²/s²
0-3 km storm-relative helicity: 168 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.8

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

224 
WUUS54 KEWX 250620
SVREWX
TXC137-385-250700-
/O.NEW.KEWX.SV.W.0009.120125T0620Z-120125T0700Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
1220 AM CST WED JAN 25 2012

THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHEASTERN EDWARDS COUNTY...
  NORTHWESTERN REAL COUNTY...

* UNTIL 100 AM CST.

* AT 1216 AM CST...NWS METEOROLOGISTS HAVE DETECTED A SEVERE
  THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL.  THIS STORM
  WAS LOCATED NEAR DEVILS SINKHOLE STATE NATURAL AREA...OR 10 MILES
  EAST OF ROCKSPRINGS...AND MOVING NORTH AT 30 MPH.

* THE SEVERE THUNDERSTORM WILL CROSS TEXAS HWY 41 NEAR THE EDWARDS   
  REAL COUNTY LINE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WATCH IS IN EFFECT UNTIL 500 AM CST. SEVERE THUNDERSTORMS 
CAN PRODUCE TORNADOES.

&&

LAT...LON 3011 9985 2992 9995 2996 10016 3030 10019
      3029 9982
TIME...MOT...LOC 0618Z 192DEG 26KT 3004 10003

$$

1 follow-up statement

360 
WWUS54 KEWX 250634
SVSEWX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
1234 AM CST WED JAN 25 2012

TXC137-385-250700-
/O.CON.KEWX.SV.W.0009.000000T0000Z-120125T0700Z/
EDWARDS TX-REAL TX-
1234 AM CST WED JAN 25 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 100 AM CST
FOR NORTHWESTERN REAL AND NORTHEASTERN EDWARDS COUNTIES...

AT 1233 AM CST...NWS METEOROLOGISTS CONTINUED TO DETECT A SEVERE
THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL.  THIS STORM WAS
LOCATED NEAR DEVILS SINKHOLE STATE NATURAL AREA...OR 13 MILES
NORTHEAST OF ROCKSPRINGS...MOVING NORTH AT 30 MPH.

THE SEVERE THUNDERSTORM WILL OTHERWISE REMAIN OVER MAINLY RURAL AREAS
OF THE INDICATED COUNTY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WATCH REMAINS IN EFFECT UNTIL 500 AM CST WEDNESDAY MORNING
FOR SOUTH CENTRAL TEXAS.

&&

LAT...LON 3011 9985 2994 9996 2996 10015 2996 10016
      2997 10016 3030 10009 3029 9982
TIME...MOT...LOC 0633Z 192DEG 26KT 3015 10000

$$

The office that day

Everything else NWS Austin/San Antonio, TX issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jan 24, 10:38 PM CST	Severe Thunderstorm Warning	EWX	Val Verde	26 min
Jan 24, 10:40 PM CST	Severe Thunderstorm Warning	EWX	Val Verde	35 min
Jan 24, 10:52 PM CST	Severe Thunderstorm Warning	EWX	Edwards, Val Verde	38 min
Jan 24, 11:17 PM CST	Severe Thunderstorm Warning	EWX	Edwards	28 min
Jan 24, 11:29 PM CST	Tornado Warning	EWX	Edwards	16 min
Jan 24, 11:41 PM CST	Severe Thunderstorm Warning	EWX	Edwards	35 min
Jan 24, 11:44 PM CST	Severe Thunderstorm Warning	EWX	Edwards	32 min
Jan 25, 1:17 AM CST	Areal Flood Advisory	EWX	Bexar	103 min
Jan 25, 1:33 AM CST	Severe Thunderstorm Warning	EWX	Bexar, Comal, Guadalupe, Hays	42 min
Jan 25, 2:00 AM CST	Flash Flood Warning	EWX	Bexar	6 hr
Jan 25, 2:06 AM CST	Areal Flood Advisory	EWX	Caldwell, Comal, Guadalupe, Hays	114 min
Jan 25, 2:15 AM CST	Areal Flood Advisory	EWX	Hays, Travis	105 min
Jan 25, 2:47 AM CST	Flash Flood Warning	EWX	Travis	3 hr
Jan 25, 3:33 AM CST	Severe Thunderstorm Warning	EWX	Bastrop, Caldwell, Hays, Travis	42 min
Jan 25, 4:06 AM CST	Areal Flood Advisory	EWX	Bexar, Blanco, Comal, Hays, Kendall	114 min
Jan 25, 4:09 AM CST	Areal Flood Advisory	EWX	Bastrop, Caldwell	111 min
Jan 25, 4:26 AM CST	Flash Flood Warning	EWX	Bastrop	3 hr
Jan 25, 4:26 AM CST	Flash Flood Warning	EWX	Travis, Williamson	3 hr
Jan 25, 4:54 AM CST	Areal Flood Advisory	EWX	Comal, Guadalupe, Hays	2 hr
Jan 25, 5:18 AM CST	Flash Flood Warning	EWX	Bastrop, Caldwell, Hays, Travis	3 hr
Jan 25, 5:49 AM CST	Areal Flood Advisory	EWX	Guadalupe	101 min
Jan 25, 5:54 AM CST	Areal Flood Advisory	EWX	Bastrop, Caldwell	2 hr
Jan 25, 6:07 AM CST	Flash Flood Warning	EWX	Lee	3 hr
Jan 25, 6:23 AM CST	Severe Thunderstorm Warning	EWX	Lee	52 min
Jan 25, 6:26 AM CST	River Flood Warning	EWX	Travis	14 hr
Jan 25, 6:39 AM CST	River Flood Warning	EWX	Bexar	14 hr
Jan 25, 6:46 AM CST	Flash Flood Warning	EWX	Bastrop	3 hr
Jan 25, 6:56 AM CST	River Flood Warning	EWX	Bexar, Wilson	32 hr
Jan 25, 7:04 AM CST	Flash Flood Warning	EWX	Fayette	3 hr
Jan 25, 9:05 AM CST	River Flood Warning	EWX	Caldwell, Gonzales	34 hr
Jan 25, 9:05 AM CST	River Flood Warning	EWX	Gonzales	60 hr
Jan 25, 9:27 AM CST	Flash Flood Warning	EWX	Bastrop	2 hr
Jan 25, 5:49 PM CST	Areal Flood Advisory	EWX	Bastrop	101 min

Nearby

Severe Thunderstorm Warnings in Texas, 2012 Every 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.