Alert archive / Texas / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 112, NWS Austin/San Antonio, TX

May 13, 2015Val Verde County, Texas

NWS Austin/San Antonio, TX issued this severe thunderstorm warning at May 13, 2015, 4:35 PM CDT for Val Verde 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: May 13, 2015, 4:35 PM CDT (21:35 UTC)
Expired: May 13, 2015, 5:15 PM CDT
In force: 40 min
Issued by: NWS Austin/San Antonio, TX
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Val Verde County, TX

The radar

The Laughlin AFB radar (KDFX), 159 km from the middle of the area, began a volume at 21:34 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.

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

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 13, 3:09 PM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Del Rio, TX (KDLF), launched 12:00Z, 9.6 hours before the alert went out and 114 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: 428 J/kg
Mixed-layer CIN: -10 J/kg
Mixed-layer LCL: 532 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: 255 m²/s²
0-3 km storm-relative helicity: 299 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 3.1

Open this sounding in Storm Lab

The text

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

381 
WUUS54 KEWX 132135
SVREWX
TXC465-132215-
/O.NEW.KEWX.SV.W.0112.150513T2135Z-150513T2215Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
435 PM CDT WED MAY 13 2015

THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHWESTERN VAL VERDE COUNTY IN SOUTH CENTRAL TEXAS...

* UNTIL 515 PM CDT

* AT 434 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED 10 MILES EAST OF
  TERRELL COUNTY GAS PLANT...OR 27 MILES SOUTH OF SHEFFIELD...MOVING
  EAST AT 45 MPH.

  HAZARD...60 MPH WIND GUSTS AND QUARTER SIZE HAIL. 

  SOURCE...RADAR INDICATED. 

  IMPACT...HAIL DAMAGE TO VEHICLES IS EXPECTED. EXPECT WIND DAMAGE 
           TO ROOFS...SIDING AND TREES. 

* LOCATIONS IMPACTED INCLUDE...
  PANDALE AND HACKBERRY CROSSING. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

PREPARE IMMEDIATELY FOR LARGE HAIL AND DEADLY CLOUD TO GROUND
LIGHTNING. SEEK SHELTER INSIDE A WELL-BUILT STRUCTURE. STAY AWAY FROM
WINDOWS.

PREPARE IMMEDIATELY FOR LARGE HAIL AND DAMAGING WINDS. PEOPLE OUTSIDE
SHOULD MOVE TO A SHELTER...INSIDE A STRONG BUILDING AND AWAY FROM
WINDOWS.

&&

LAT...LON 3028 10176 3029 10103 3000 10127 3022 10176
TIME...MOT...LOC 2134Z 282DEG 38KT 3031 10168 

HAIL...1.00IN
WIND...60MPH
 
$$

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Austin/San Antonio, TX wrote its last area forecast discussion before this severe thunderstorm warning went out at May 13, 4:34 PM CDT, 1 minute earlier.

Area forecast discussion, May 13, 4:34 PM CDT, 1 minute before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
434 PM CDT WED MAY 13 2015

.SHORT TERM (TONIGHT THROUGH THURSDAY NIGHT)...
CONVECTIVE TRENDS ALONG AND EAST OF HIGHWAY 281 CONTINUE TO
DECREASE OVER THE LAST COUPLE HOURS AS IR SATELLITE SHOWS WARMING
CLOUD TOPS AND LIGHTNING DATA SHOWS A DECREASE IN THE NUMBER OF
STRIKES. BASED ON CURRENT TRENDS AND THE TEXAS TECH WRF MODEL...
THIS AREA SHOULD CONTINUE TO SEE A GENERAL DECREASE IN CONVECTION
THROUGH THE EVENING. FARTHER WEST ACROSS THE SOUTHERN EDWARDS
PLATEAU AND RIO GRANDE PLAINS...BREAKS IN THE CLOUD COVER HAVE
ALLOWED DAYTIME HEATING TO DESTABILIZE THE LOWER LEVELS. RADAR AND
SATELLITE TRENDS SHOW AN INCREASE IN CONVECTION AND GIVEN MODEST
MID-LEVEL LAPSE RATES AND MLCAPES ON THE INCREASE...A FEW SEVERE
THUNDERSTORMS ARE POSSIBLE THIS EVENING. SEVERE THUNDERSTORM WATCH
NUMBER #170 IS IN EFFECT UNTIL 10 PM FOR THE SOUTHERN EDWARDS
PLATEAU AND RIO GRANDE PLAINS. WITH REGARDS TO THE FLASH FLOODING
CONCERNS...WILL LET THE FLASH FLOOD WATCH CONTINUE UNTIL 7 PM.
AREAS WITH SATURATED SOILS WILL BE MOST SUSCEPTIBLE FOR FLASH
FLOODING.

FOR THURSDAY...SOUTHWEST FLOW ALOFT REMAINS INTACT WITH SHORT
RANGE MODELS ADVERTISING SOME VERY SUBTLE MID-LEVEL SHORTWAVES
MOVING THROUGH DURING THE AFTERNOON AND EVENING. FOR THE LATE
AFTERNOON...PRECIPITATION CHANCES WILL BE FAVORED ALONG AND EAST
OF I-35. DURING THE EVENING...THE MODELS SUGGEST PRECIPITATION
CHANCES WILL BE FAVORED ALONG THE RIO GRANDE AS A STRONGER MID-
LEVEL SHORTWAVE TROUGH MOVES IN FROM THE WEST.

&&

.LONG TERM (FRIDAY THROUGH WEDNESDAY)...
A LONG WAVE TROUGH WILL REMAIN INTACT ACROSS THE WESTERN U.S.
THROUGH THE REMAINDER OF THE WORK WEEK INTO THE UPCOMING WEEKEND.
THE TROUGH WILL BEGIN TO TAKE ON MORE OF A NEGATIVE TILT AS IT
TRANSLATES EAST INTO THE SOUTHERN U.S. PLAINS THROUGH THE UPCOMING
WEEKEND. FOR NOW...IT APPEARS THE BEST CHANCE FOR PRECIPITATION
WILL BE SATURDAY NIGHT INTO SUNDAY AS THE MAIN TROUGH AXIS LIFTS
INTO THE SOUTHERN U.S. PLAINS. RAIN CHANCES CONTINUE INTO TUESDAY
OF NEXT WEEK WITH A LONG WAVE TROUGH TO OUR WEST AND AN
INCREASINGLY ACTIVE SUBTROPICAL JET. GIVEN THE ACTIVE
PATTERN...WE/LL CONTINUE AT LEAST 20-40% CHANCES FOR PRECIPITATION
INTO EARLY NEXT WEEK. RAIN CHANCES MAY NEED TO BE INCREASED IF A
COLD FRONT MANAGES TO GET INTO THE REGION EARLY NEXT WEEK.

&&

.PRELIMINARY POINT TEMPS/POPS...
AUSTIN CAMP MABRY              69  83  71  82  70 /  50  30  20  40  20
AUSTIN BERGSTROM INTL AIRPORT  68  83  71  82  71 /  50  40  20  50  20
NEW BRAUNFELS MUNI AIRPORT     68  84  70  81  70 /  40  30  20  40  20
BURNET MUNI AIRPORT            66  82  69  80  69 /  40  30  30  40  20
DEL RIO INTL AIRPORT           69  85  68  86  70 /  20  20  50  30  30
GEORGETOWN MUNI AIRPORT        67  82  70  80  69 /  50  30  20  40  20
HONDO MUNI AIRPORT             68  85  69  84  70 /  30  20  40  40  20
SAN MARCOS MUNI AIRPORT        68  83  70  82  70 /  40  40  20  50  20
LA GRANGE - FAYETTE REGIONAL   71  84  72  82  72 /  50  40  20  50  20
SAN ANTONIO INTL AIRPORT       69  84  70  82  71 /  40  30  30  40  20
STINSON MUNI AIRPORT           70  85  71  83  71 /  40  30  30  40  20

&&

.EWX WATCHES/WARNINGS/ADVISORIES...
FLASH FLOOD WATCH UNTIL 7 PM CDT THIS EVENING FOR THE FOLLOWING
COUNTIES: ATASCOSA...BANDERA...BASTROP...BEXAR...BLANCO...BURNET...
CALDWELL...COMAL...DE WITT...DIMMIT...EDWARDS...FAYETTE...FRIO...
GILLESPIE...GONZALES...GUADALUPE...HAYS...KARNES...KENDALL...KERR...
KINNEY...LAVACA...LEE...LLANO...MAVERICK...MEDINA...REAL...TRAVIS...
UVALDE...VAL VERDE...WILLIAMSON...WILSON...ZAVALA.

&&

MESOSCALE/AVIATION...01
SYNOPTIC/GRIDS...24
PUBLIC SERVICE/DATA COLLECTION...30

Hazardous weather outlook, May 13, 4:44 AM CDT, 11 hours 51 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
444 AM CDT WED MAY 13 2015

TXZ171>173-183>194-202>209-217>225-228-141000-
LLANO-BURNET-WILLIAMSON-VAL VERDE-EDWARDS-REAL-KERR-BANDERA-
GILLESPIE-KENDALL-BLANCO-HAYS-TRAVIS-BASTROP-LEE-KINNEY-UVALDE-
MEDINA-BEXAR-COMAL-GUADALUPE-CALDWELL-FAYETTE-MAVERICK-ZAVALA-
FRIO-ATASCOSA-WILSON-KARNES-GONZALES-DE WITT-LAVACA-DIMMIT-
444 AM CDT WED MAY 13 2015

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTH CENTRAL TEXAS.

.DAY ONE...TODAY AND TONIGHT.

A FLASH FLOOD WATCH IS IN EFFECT FOR ALL OF SOUTH CENTRAL TEXAS
THROUGH EARLY THIS EVENING. WIDESPREAD RAINFALL AMOUNTS OF 1 TO 3
INCHES ARE EXPECTED WITH ISOLATED AMOUNTS OF 5 INCHES POSSIBLE.
THESE AMOUNTS...ESPECIALLY OVER ALREADY MOIST AND NEARLY SATURATED
GROUND FROM RECENT RAINFALL...WILL LIKELY RESULT IN FLASH
FLOODING. LOW WATER CROSSINGS...CREEKS AND STREAMS...AND AREAS
WITH POOR DRAINAGE MAY BE IMPACTED.

THERE IS A MARGINAL TO SLIGHT RISK FOR STRONG TO SEVERE STORMS
CAPABLE OF PRODUCING LARGE HAIL AND DAMAGING WINDS. THE GREATEST
THREAT AREA IS ALONG AND WEST OF FREDERICKSBURG TO NEW BRAUNFELS
TO KARNES CITY LINE.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY.

RESIDENTS AND DECISION MAKERS SHOULD MONITOR THE FORECAST CLOSELY
AS THE FORECAST WEATHER PATTERN IS FAVORABLE TO PRODUCE CHANCES
OF THUNDERSTORMS FOR THE NEXT SEVERAL DAYS. A POTENTIAL FOR
LOCALLY HEAVY RAINS AND STRONG STORMS WILL CONTINUE.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED THROUGH EARLY THIS EVENING.

In the hours before

Local storm report, May 13, 1:33 PM CDT, 3 hours 2 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
133 PM CDT WED MAY 13 2015

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1100 AM     TSTM WND DMG     6 ENE BUCHANAN DAM      30.84N  98.35W
05/13/2015                   BURNET             TX   PUBLIC

            WIND GUSTS BLEW DOWN SOME SMALL TREES...SIZE UNKNOWN

&&

EVENT NUMBER EWX1500361

SBS

Local storm report, May 13, 1:46 PM CDT, 2 hours 49 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
146 PM CDT WED MAY 13 2015

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1245 PM     FLASH FLOOD      ELGIN                   30.35N  97.37W
05/13/2015                   BASTROP            TX   EMERGENCY MNGR

            1333 BLOCK OF OLD SAYER ROAD IS FLOODED...ALSO FM812
            NEAR THE COUNTY LINE ON THE SOUTHWEST PART OF THE COUNTY
            HAS SECTIONS FLOODED WITH WATER OVER THE ROADWAY

&&

EVENT NUMBER EWX1500362

SBS

Local storm report, May 13, 1:50 PM CDT, 2 hours 45 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
150 PM CDT WED MAY 13 2015

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0122 PM     FLOOD            SAN ANTONIO             29.43N  98.49W
05/13/2015                   BEXAR              TX   DEPT OF HIGHWAYS

            STREET CLOSURES AT HAUSMAN ROAD S...LESLIE ROAD AND
            LOOKOUT ROAD DUE TO HEAVY RAINS

&&

EVENT NUMBER EWX1500363

SBS

Local storm report, May 13, 2:46 PM CDT, 1 hour 49 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
246 PM CDT WED MAY 13 2015

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0235 PM     FLASH FLOOD      ELGIN                   30.35N  97.37W
05/13/2015                   BASTROP            TX   LAW ENFORCEMENT

            ROAD CLOSURES NEAR ELGIN DUE TO HIGH WATER...INCLUDING
            2100 UPPER ELGIN RIVER ROAD...LAZY RIVER ROAD...AND
            RACCOON ROAD. SEVERAL OTHER ROADS HAVE WATER OVER THEM
            BUT ARE PASSABLE

&&

EVENT NUMBER EWX1500364

SBS

Local storm report, May 13, 2:51 PM CDT, 1 hour 44 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
251 PM CDT WED MAY 13 2015

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0235 PM     FLASH FLOOD      ELGIN                   30.35N  97.37W
05/13/2015                   BASTROP            TX   LAW ENFORCEMENT

            SEVERAL ROADS CLOSED DUE TO HIGH WATER NEAR ELGIN AND
            AROUND BASTROP COUNTY INCLUDING WOODY LANE AT
            FM1704...YOUNG PRAIRIE AT FM1704...THE 370 BLOCK NEAR
            THE NORTH COUNTY LINE

&&

EVENT NUMBER EWX1500365

SBS

Local storm report, May 13, 3:08 PM CDT, 1 hour 27 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
308 PM CDT WED MAY 13 2015

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0300 PM     FLASH FLOOD      DIME BOX                30.35N  96.82W
05/13/2015                   LEE                TX   LAW ENFORCEMENT

            FM141 CLOSE TO DIME BOX CLOSED DUE TO HIGH WATER...ALSO
            FM1624 CLOSE TO LEXINGTON CLOSED DUE TO WATER OVER THE
            ROADWAY...AND SEVERAL OTHER COUNTY ROADS ARE CLOSED

&&

EVENT NUMBER EWX1500366

SBS

The office that day

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

Issued	Product	Office	Counties	Lasted
May 13, 5:40 AM CDT	Areal Flood Advisory	EWX	Edwards, Kinney, Val Verde	3 hr
May 13, 5:55 AM CDT	Flash Flood Warning	EWX	Val Verde	3 hr
May 13, 7:05 AM CDT	Areal Flood Advisory	EWX	Maverick	3 hr
May 13, 7:35 AM CDT	Areal Flood Advisory	EWX	Edwards, Kinney, Real, Uvalde	3 hr
May 13, 7:39 AM CDT	Special Weather Statement	EWX	Dimmit, Maverick, Zavala	66 min
May 13, 7:42 AM CDT	Special Weather Statement	EWX	Real	63 min
May 13, 7:48 AM CDT	Special Weather Statement	EWX	Uvalde	57 min
May 13, 8:33 AM CDT	Special Weather Statement	EWX	Bandera, Kerr	57 min
May 13, 8:40 AM CDT	Special Weather Statement	EWX	Frio, Medina, Zavala	65 min
May 13, 8:48 AM CDT	Special Weather Statement	EWX	Bandera	27 min
May 13, 9:02 AM CDT	Areal Flood Advisory	EWX	Kinney, Val Verde	118 min
May 13, 9:22 AM CDT	Special Weather Statement	EWX	Bandera, Blanco, Gillespie, Kendall	53 min
May 13, 9:37 AM CDT	Special Weather Statement	EWX	Atascosa, Bexar, Frio	53 min
May 13, 9:46 AM CDT	Areal Flood Advisory	EWX	Bandera, Kerr, Medina, Uvalde	3 hr
May 13, 9:53 AM CDT	Severe Thunderstorm Warning	EWX	Atascosa, Bexar, Frio, Medina	52 min
May 13, 10:13 AM CDT	Special Weather Statement	EWX	Blanco, Burnet, Hays	62 min
May 13, 10:25 AM CDT	Special Weather Statement	EWX	Bexar, Comal, Guadalupe, Karnes, Wilson	65 min
May 13, 10:32 AM CDT	Tornado Warning	EWX	Blanco, Hays	28 min
May 13, 11:06 AM CDT	Special Weather Statement	EWX	Comal, Hays, Travis, Williamson	39 min
May 13, 11:42 AM CDT	Areal Flood Advisory	EWX	Atascosa, Karnes, Wilson	3 hr
May 13, 11:46 AM CDT	Special Weather Statement	EWX	Bastrop, Caldwell, Travis, Williamson	59 min
May 13, 12:21 PM CDT	Flash Flood Warning	EWX	Bastrop, Lee	6 hr
May 13, 12:30 PM CDT	Areal Flood Advisory	EWX	Blanco, Burnet, Caldwell, Comal, Guadalupe, Hays and 2 more	3 hr
May 13, 12:48 PM CDT	Special Weather Statement	EWX	Gonzales	42 min
May 13, 1:16 PM CDT	Flash Flood Warning	EWX	Atascosa, Karnes, Wilson	4 hr
May 13, 2:01 PM CDT	Areal Flood Advisory	EWX	Bandera, Bexar, Comal, Guadalupe, Kendall, Medina and 1 more	3 hr
May 13, 4:11 PM CDT	Areal Flood Advisory	EWX	DeWitt, Gonzales, Karnes, Lavaca, Wilson	2 hr
May 13, 5:10 PM CDT	Severe Thunderstorm Warning	EWX	Val Verde	50 min
May 13, 5:46 PM CDT	Tornado Warning	EWX	Val Verde	29 min
May 13, 5:57 PM CDT	Severe Thunderstorm Warning	EWX	Val Verde	48 min
May 13, 6:16 PM CDT	Severe Thunderstorm Warning	EWX	Val Verde	44 min

Nearby

Severe Thunderstorm Warnings in Texas, 2015 Every severe thunderstorm warning in 2015

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.