Alert archive / Texas / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 101, NWS Austin/San Antonio, TX

April 30, 20164 counties in Texas

NWS Austin/San Antonio, TX issued this severe thunderstorm warning at Apr 30, 2016, 2:59 AM CDT for 4 counties in Texas. It was in force for 61 min. 11 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: Apr 30, 2016, 2:59 AM CDT (07:59 UTC)
Expired: Apr 30, 2016, 4:00 AM CDT
In force: 61 min
Issued by: NWS Austin/San Antonio, TX
Area: Storm-based polygon
Hail: 2.75 in
Wind: 60.0 mph

Counties Blanco County, TX, Comal County, TX, Hays County, TX, Kendall County, TX

The radar

The Austin/San Antonio radar (KEWX), 44 km from the middle of the area, began a volume at 08:02 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
Apr 30, 3:00 AM CDT	HAIL 1.75	Boerne, TX
Apr 30, 3:10 AM CDT	HAIL 1.75	5 N Bergheim, TX
Apr 30, 3:25 AM CDT	TSTM WND GST 60	Spring Branch, TX
Apr 30, 3:30 AM CDT	HAIL 1.75	Spring Branch, TX	GOLF BALL SIZED HAIL IN SPRING BRANCH. TIME ESTIMATED FROM RADAR.
Apr 30, 3:31 AM CDT	HAIL 2	8 Nw Canyon Lake Dam, TX
Apr 30, 3:35 AM CDT	HAIL 1.75	10 Nw Canyon Lake Dam, TX
Apr 30, 3:40 AM CDT	HAIL 2.75	Spring Branch, TX
Apr 30, 3:50 AM CDT	HAIL 0.75	1 Ssw Woodcreek, TX
Apr 30, 3:53 AM CDT	HAIL 0.88	Wimberley, TX
Apr 30, 3:55 AM CDT	TSTM WND DMG	7 Nw Wimberley, TX	THE PUBLIC REPORTED 8-10 INCH DIAMETER TREES SNAPPED ABOUT 4 TO 5 FEET ABOVE GROUND.
Apr 30, 3:56 AM CDT	HAIL 1.75	2 Sw Wimberley, TX

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Apr 29, 8:20 PM CDT	Severe Thunderstorm Watch	SPC	9 hr

The nearest sounding before it

Del Rio, TX (KDLF), launched 00:00Z, 8.0 hours before the alert went out and 234 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: 1523 J/kg
Mixed-layer CIN: -48 J/kg
Mixed-layer LCL: 1775 m above ground
0-6 km bulk shear: 57 kt
0-1 km storm-relative helicity: -68 m²/s²
0-3 km storm-relative helicity: -49 m²/s²
Significant tornado parameter: -0.3
Supercell composite: -8.5

Open this sounding in Storm Lab

The text

As transmitted.

047 
WUUS54 KEWX 300759
SVREWX
TXC031-091-209-259-300900-
/O.NEW.KEWX.SV.W.0101.160430T0759Z-160430T0900Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
259 AM CDT SAT APR 30 2016

THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  COMAL COUNTY IN SOUTH CENTRAL TEXAS...
  SOUTHWESTERN BLANCO COUNTY IN SOUTH CENTRAL TEXAS...
  CENTRAL KENDALL COUNTY IN SOUTH CENTRAL TEXAS...
  SOUTHWESTERN HAYS COUNTY IN SOUTH CENTRAL TEXAS...

* UNTIL 400 AM CDT

* AT 257 AM CDT...A SEVERE THUNDERSTORM WAS LOCATED OVER KREUTZBERG...
  OR NEAR BOERNE...MOVING EAST AT 40 MPH.

  THIS IS A VERY DANGEROUS STORM. 

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

  SOURCE...RADAR INDICATED. 

  IMPACT...PEOPLE AND ANIMALS OUTDOORS WILL BE SEVERELY INJURED. 
           EXPECT SHATTERED WINDOWS...EXTENSIVE DAMAGE TO ROOFS...
           SIDING...AND VEHICLES. 

* LOCATIONS IMPACTED INCLUDE...
  NEW BRAUNFELS...BOERNE...WIMBERLEY...CANYON LAKE DAM...FAIR OAKS RANCH...
  CANYON LAKE...BULVERDE...WOODCREEK...WARING...WALNUT GROVE...GUADALUPE
  RIVER STATE PARK...SPRING BRANCH...WELFARE...SISTERDALE...BERGHEIM...
  TWIN SISTERS...FISCHER...KENDALIA...NELSON CITY AND KREUTZBERG.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

LARGE HAIL AND DAMAGING WINDS AND CONTINUOUS CLOUD TO GROUND
LIGHTNING IS OCCURRING WITH THIS STORM. MOVE INDOORS IMMEDIATELY.
LIGHTNING IS ONE OF NATURES LEADING KILLERS. REMEMBER...IF YOU CAN
HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE STRUCK BY LIGHTNING.

TORRENTIAL RAINFALL IS OCCURRING WITH THIS STORM...AND MAY LEAD TO
FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED ROADWAYS.

&&

LAT...LON 2972 9805 2973 9839 2975 9841 2974 9842
      2974 9853 2976 9855 2974 9858 2975 9860
      2974 9865 2975 9865 2975 9879 2996 9882
      3015 9809
TIME...MOT...LOC 0757Z 259DEG 33KT 2988 9869 

HAIL...2.75IN
WIND...60MPH
 
$$

CP

2 follow-up statements

150 
WWUS54 KEWX 300821
SVSEWX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
321 AM CDT SAT APR 30 2016

TXC031-091-209-259-300900-
/O.CON.KEWX.SV.W.0101.000000T0000Z-160430T0900Z/
COMAL TX-BLANCO TX-KENDALL TX-HAYS TX-
321 AM CDT SAT APR 30 2016

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 400 AM CDT
FOR COMAL...SOUTH CENTRAL BLANCO...SOUTHEASTERN KENDALL AND
SOUTHWESTERN HAYS COUNTIES...

AT 321 AM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR SPRING BRANCH...
OR 12 MILES SOUTH OF BLANCO...MOVING EAST AT 40 MPH.

THIS IS A VERY DANGEROUS STORM.

HAZARD...BASEBALL SIZE HAIL AND 70 MPH WIND GUSTS. 

SOURCE...RADAR INDICATED. 

IMPACT...PEOPLE AND ANIMALS OUTDOORS WILL BE SEVERELY INJURED. 
         EXPECT SHATTERED WINDOWS...EXTENSIVE DAMAGE TO ROOFS...
         SIDING...AND VEHICLES. 

LOCATIONS IMPACTED INCLUDE...
NEW BRAUNFELS...WIMBERLEY...CANYON LAKE DAM...FAIR OAKS RANCH...CANYON
LAKE...BULVERDE...WOODCREEK...BERGHEIM...TWIN SISTERS...FISCHER...KENDALIA...
GUADALUPE RIVER STATE PARK...SPRING BRANCH...ANHALT...GRUENE...SPECHT
STORE...SATTLER AND STARTZVILLE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

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

LARGE HAIL AND DAMAGING WINDS AND CONTINUOUS CLOUD TO GROUND
LIGHTNING IS OCCURRING WITH THIS STORM. MOVE INDOORS IMMEDIATELY.
LIGHTNING IS ONE OF NATURES LEADING KILLERS. REMEMBER...IF YOU CAN
HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE STRUCK BY LIGHTNING.

TORRENTIAL RAINFALL IS OCCURRING WITH THIS STORM...AND MAY LEAD TO
FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED ROADWAYS.

&&

LAT...LON 2972 9805 2973 9839 2975 9841 2974 9842
      2974 9853 2976 9855 2974 9858 2975 9860
      2974 9865 2975 9865 2976 9866 2999 9869
      3015 9809
TIME...MOT...LOC 0821Z 259DEG 33KT 2992 9844 

HAIL...2.75IN
WIND...70MPH
 
$$

RUNYEN

175 
WWUS54 KEWX 300842
SVSEWX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
342 AM CDT SAT APR 30 2016

TXC031-091-209-259-300900-
/O.CON.KEWX.SV.W.0101.000000T0000Z-160430T0900Z/
COMAL TX-BLANCO TX-KENDALL TX-HAYS TX-
342 AM CDT SAT APR 30 2016

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 400 AM CDT
FOR CENTRAL COMAL...SOUTH CENTRAL BLANCO...EAST CENTRAL KENDALL AND
SOUTHWESTERN HAYS COUNTIES...

AT 341 AM CDT...A SEVERE THUNDERSTORM WAS LOCATED OVER FISCHER...OR 7
MILES NORTHWEST OF CANYON LAKE DAM...MOVING EAST AT 30 MPH.

HAZARD...TENNIS BALL SIZE HAIL AND 70 MPH WIND GUSTS. 

SOURCE...RADAR INDICATED. 

IMPACT...PEOPLE AND ANIMALS OUTDOORS WILL BE INJURED. EXPECT HAIL 
         DAMAGE TO ROOFS...SIDING...WINDOWS...AND VEHICLES. EXPECT 
         CONSIDERABLE TREE DAMAGE. WIND DAMAGE IS ALSO LIKELY TO 
         MOBILE HOMES...ROOFS...AND OUTBUILDINGS. 

LOCATIONS IMPACTED INCLUDE...
WIMBERLEY...CANYON LAKE DAM...CANYON LAKE...BULVERDE...WOODCREEK...SPRING
BRANCH...TWIN SISTERS...FISCHER...SATTLER...ANHALT AND STARTZVILLE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

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

LARGE HAIL AND DAMAGING WINDS AND CONTINUOUS CLOUD TO GROUND
LIGHTNING IS OCCURRING WITH THIS STORM. MOVE INDOORS IMMEDIATELY.
LIGHTNING IS ONE OF NATURES LEADING KILLERS. REMEMBER...IF YOU CAN
HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE STRUCK BY LIGHTNING.

TORRENTIAL RAINFALL IS OCCURRING WITH THIS STORM...AND MAY LEAD TO
FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED ROADWAYS.

&&

LAT...LON 2976 9806 2977 9850 3004 9852 3015 9809
TIME...MOT...LOC 0841Z 253DEG 26KT 2996 9827 

HAIL...2.50IN
WIND...70MPH
 
$$

RUNYEN

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 29, 7:08 PM CDT	Special Weather Statement	EWX	Burnet	37 min
Apr 29, 7:15 PM CDT	Severe Thunderstorm Warning	EWX	Burnet	45 min
Apr 29, 7:34 PM CDT	Special Weather Statement	EWX	Bexar	41 min
Apr 29, 7:50 PM CDT	Severe Thunderstorm Warning	EWX	Bexar, Medina	55 min
Apr 29, 8:11 PM CDT	Severe Thunderstorm Warning	EWX	Bexar	49 min
Apr 29, 8:41 PM CDT	Areal Flood Advisory	EWX	Bexar	3 hr
Apr 29, 8:48 PM CDT	Severe Thunderstorm Warning	EWX	Bexar, Comal, Guadalupe	57 min
Apr 29, 9:21 PM CDT	Special Weather Statement	EWX	Burnet	39 min
Apr 29, 9:41 PM CDT	Severe Thunderstorm Warning	EWX	Burnet	33 min
Apr 29, 9:46 PM CDT	Special Weather Statement	EWX	Guadalupe	59 min
Apr 29, 9:47 PM CDT	Special Weather Statement	EWX	Llano	28 min
Apr 29, 10:13 PM CDT	Special Weather Statement	EWX	Burnet	47 min
Apr 29, 10:39 PM CDT	Special Weather Statement	EWX	Guadalupe	36 min
Apr 29, 10:47 PM CDT	Special Weather Statement	EWX	Burnet	43 min
Apr 30, 12:45 AM CDT	Special Weather Statement	EWX	Val Verde	30 min
Apr 30, 1:24 AM CDT	Special Weather Statement	EWX	Kinney, Uvalde	36 min
Apr 30, 1:52 AM CDT	Special Weather Statement	EWX	Bandera	38 min
Apr 30, 2:16 AM CDT	Special Weather Statement	EWX	Uvalde	44 min
Apr 30, 2:27 AM CDT	Severe Thunderstorm Warning	EWX	Bandera, Kendall, Kerr, Kinney, Medina, Uvalde	48 min
Apr 30, 3:03 AM CDT	Severe Thunderstorm Warning	EWX	Bandera, Medina, Uvalde	36 min
Apr 30, 3:06 AM CDT	Severe Thunderstorm Warning	EWX	Kinney, Uvalde	54 min
Apr 30, 3:52 AM CDT	Severe Thunderstorm Warning	EWX	Caldwell, Comal, Hays, Travis	38 min
Apr 30, 4:00 AM CDT	Special Weather Statement	EWX	Medina	30 min
Apr 30, 4:21 AM CDT	Special Weather Statement	EWX	Caldwell, Guadalupe	39 min
Apr 30, 4:27 AM CDT	Severe Thunderstorm Warning	EWX	Bastrop, Caldwell, Hays, Travis	48 min
Apr 30, 4:33 AM CDT	Areal Flood Advisory	EWX	Hays, Travis	117 min
Apr 30, 4:35 AM CDT	Special Weather Statement	EWX	Travis	40 min
Apr 30, 4:37 AM CDT	Special Weather Statement	EWX	Medina	23 min
Apr 30, 4:57 AM CDT	Severe Thunderstorm Warning	EWX	Bastrop, Fayette, Lee, Travis	48 min
Apr 30, 5:00 AM CDT	Severe Thunderstorm Warning	EWX	Atascosa, Bexar, Medina	19 min
Apr 30, 5:07 AM CDT	Special Weather Statement	EWX	Gonzales	38 min
Apr 30, 5:23 AM CDT	Areal Flood Advisory	EWX	Bastrop	2 hr
Apr 30, 5:36 AM CDT	Severe Thunderstorm Warning	EWX	Bastrop, Fayette, Lee	39 min
Apr 30, 5:51 AM CDT	Special Weather Statement	EWX	Fayette	39 min
Apr 30, 6:16 AM CDT	Special Weather Statement	EWX	Fayette	29 min
Apr 30, 6:18 AM CDT	Areal Flood Advisory	EWX	Lee	117 min

Nearby

Severe Thunderstorm Warnings in Texas, 2016 Every severe thunderstorm warning in 2016

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.