Alert archive / Texas / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 33, NWS Austin/San Antonio, TX

March 18, 20164 counties in Texas

NWS Austin/San Antonio, TX issued this severe thunderstorm warning at Mar 18, 2016, 6:42 PM CDT for 4 counties in Texas. It was in force for 48 min. 2 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: Mar 18, 2016, 6:42 PM CDT (23:42 UTC)
Expired: Mar 18, 2016, 7:30 PM CDT
In force: 48 min
Issued by: NWS Austin/San Antonio, TX
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Blanco County, TX, Burnet County, TX, Llano County, TX, Travis County, TX

The radar

The Ft Hood radar (KGRK), 83 km from the middle of the area, began a volume at 23:42 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
Mar 18, 6:57 PM CDT	HAIL 1	4 Nw Marble Falls, TX
Mar 18, 7:10 PM CDT	HAIL 0.5	3 S Horseshoe Bay, 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
Mar 18, 4:09 PM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Fort Worth, TX (KFWD), launched 12:00Z, 11.7 hours before the alert went out and 270 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: 232 J/kg
Mixed-layer CIN: -340 J/kg
Mixed-layer LCL: 670 m above ground
0-6 km bulk shear: 43 kt
0-1 km storm-relative helicity: 219 m²/s²
0-3 km storm-relative helicity: 252 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.5

Open this sounding in Storm Lab

The text

As transmitted.

516 
WUUS54 KEWX 182342
SVREWX
TXC031-053-299-453-190030-
/O.NEW.KEWX.SV.W.0033.160318T2342Z-160319T0030Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
642 PM CDT FRI MAR 18 2016

THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHWESTERN BURNET COUNTY IN SOUTH CENTRAL TEXAS...
  NORTHWESTERN TRAVIS COUNTY IN SOUTH CENTRAL TEXAS...
  NORTHEASTERN BLANCO COUNTY IN SOUTH CENTRAL TEXAS...
  SOUTHEASTERN LLANO COUNTY IN SOUTH CENTRAL TEXAS...

* UNTIL 730 PM CDT

* AT 641 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED OVER MEADOWLAKES...
  OR OVER MARBLE FALLS...MOVING EAST AT 30 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...
  KINGSLAND...MARBLE FALLS...ROUND MOUNTAIN...LEANDER...LAKEWAY...LAGO
  VISTA...GRANITE SHOALS...HORSESHOE BAY...MEADOWLAKES...HIGHLAND HAVEN...
  SPICEWOOD...HUDSON BEND...SMITHWICK...INKS LAKE STATE PARK...JONESTOWN...
  BRIARCLIFF...COTTONWOOD SHORES AND SUNRISE BEACH VILLAGE.

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 3047 9846 3073 9843 3069 9821 3054 9787
      3035 9794
TIME...MOT...LOC 2341Z 283DEG 26KT 3055 9830 

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

LJH

1 follow-up statement

672 
WWUS54 KEWX 190013
SVSEWX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
713 PM CDT FRI MAR 18 2016

TXC031-299-190022-
/O.CAN.KEWX.SV.W.0033.000000T0000Z-160319T0030Z/
BLANCO TX-LLANO TX-
713 PM CDT FRI MAR 18 2016

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN BLANCO AND
SOUTHEASTERN LLANO COUNTIES IS CANCELLED...
    
THE SEVERE THUNDERSTORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF
THE WARNED AREA. THEREFORE THE WARNING HAS BEEN CANCELLED.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT FOR
SOUTH CENTRAL TEXAS.

LAT...LON 3058 9806 3052 9788 3035 9794 3041 9813
      3043 9813 3043 9814 3048 9834 3067 9829
TIME...MOT...LOC 0012Z 297DEG 22KT 3051 9820 

$$

TXC053-453-190030-
/O.CON.KEWX.SV.W.0033.000000T0000Z-160319T0030Z/
BURNET TX-TRAVIS TX-
713 PM CDT FRI MAR 18 2016

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 730 PM CDT
FOR SOUTHWESTERN BURNET AND NORTHWESTERN TRAVIS COUNTIES...

AT 712 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED OVER
SPICEWOOD...OR NEAR MARBLE FALLS...MOVING SOUTHEAST AT 25 MPH.
QUARTER SIZE HAIL WAS OBSERVED IN MARBLE FALLS WITH THIS STORM.

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

SOURCE...TRAINED WEATHER SPOTTERS. 

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

LOCATIONS IMPACTED INCLUDE...
MARBLE FALLS...LAKEWAY...LAGO VISTA...HORSESHOE BAY...MEADOWLAKES...
SPICEWOOD...HUDSON BEND...SMITHWICK...JONESTOWN...BRIARCLIFF AND
COTTONWOOD SHORES.

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 3058 9806 3052 9788 3035 9794 3041 9813
      3043 9813 3043 9814 3048 9834 3067 9829
TIME...MOT...LOC 0012Z 297DEG 22KT 3051 9820 

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

LJH

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 18, 4:13 PM CDT	Special Weather Statement	EWX	Kerr	47 min
Mar 18, 4:20 PM CDT	Special Weather Statement	EWX	Real	40 min
Mar 18, 4:38 PM CDT	Severe Thunderstorm Warning	EWX	Gillespie, Kendall, Kerr	37 min
Mar 18, 4:42 PM CDT	Severe Thunderstorm Warning	EWX	Burnet	48 min
Mar 18, 4:59 PM CDT	Areal Flood Advisory	EWX	Gillespie, Kerr, Real	2 hr
Mar 18, 5:11 PM CDT	Severe Thunderstorm Warning	EWX	Bandera, Gillespie, Kendall, Kerr	64 min
Mar 18, 5:17 PM CDT	Special Weather Statement	EWX	Real	43 min
Mar 18, 5:17 PM CDT	Severe Thunderstorm Warning	EWX	Blanco, Burnet, Llano, Travis	58 min
Mar 18, 5:50 PM CDT	Severe Thunderstorm Warning	EWX	Val Verde	85 min
Mar 18, 6:09 PM CDT	Severe Thunderstorm Warning	EWX	Blanco, Gillespie, Hays, Kendall	66 min
Mar 18, 6:13 PM CDT	Severe Thunderstorm Warning	EWX	Bandera, Edwards, Kerr, Real	62 min
Mar 18, 6:19 PM CDT	Flash Flood Warning	EWX	Edwards, Real	3 hr
Mar 18, 6:42 PM CDT	Special Weather Statement	EWX	Kendall	33 min
Mar 18, 6:49 PM CDT	Severe Thunderstorm Warning	EWX	Caldwell, Comal, Guadalupe, Hays	56 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.