Alert archive / Texas / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 29, 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, 5:17 PM CDT for 4 counties in Texas. It was in force for 58 min. 5 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, 5:17 PM CDT (22:17 UTC)
Expired
Mar 18, 2016, 6:15 PM CDT
In force
58 min
Issued by
NWS Austin/San Antonio, TX
Area
Storm-based polygon
Hail
1.5 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), 72 km from the middle of the area, began a volume at 22:19 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

TimeReportWhereRemark
Mar 18, 5:37 PM CDTTSTM WND GST 604 Nw Marble Falls, TXHAD DIME SIZE HAIL AND STRAIGHT LINE WIND GUSTS
Mar 18, 5:37 PM CDTHAIL 13 Nw Marble Falls, TX
Mar 18, 5:48 PM CDTHAIL 15 Ne Granite Shoals, TX
Mar 18, 6:06 PM CDTHAIL 1.51 Sse Round Mountain, TXPING PONG SIZED HAIL MIXED WITH COPIOUS AMOUNTS OF PEA TO NICKEL.
Mar 18, 6:12 PM CDTHAIL 12 S Round Mountain, 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.

IssuedProductOfficeLasted
Mar 18, 4:09 PM CDTSevere Thunderstorm WatchSPC7 hr

The nearest sounding before it

Fort Worth, TX (KFWD), launched 12:00Z, 10.3 hours before the alert went out and 266 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-pSkew-T log-p diagram, Fort Worth, TX at 12:00Z on 2016-03-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 232 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Fort Worth, TX at 12:00Z on 2016-03-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 219 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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.

016 
WUUS54 KEWX 182217
SVREWX
TXC031-053-299-453-182315-
/O.NEW.KEWX.SV.W.0029.160318T2217Z-160318T2315Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
517 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 615 PM CDT

* AT 516 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR BURNET...
  MOVING SOUTHEAST AT 25 MPH.

  HAZARD...PING PONG BALL SIZE HAIL AND 60 MPH WIND GUSTS. 

  SOURCE...RADAR INDICATED. 

  IMPACT...PEOPLE AND ANIMALS OUTDOORS WILL BE INJURED. EXPECT HAIL 
           DAMAGE TO ROOFS...SIDING...WINDOWS...AND VEHICLES. EXPECT 
           WIND DAMAGE TO ROOFS...SIDING...AND TREES. 

* LOCATIONS IMPACTED INCLUDE...
  AUSTIN...CEDAR PARK...KINGSLAND...MARBLE FALLS...BURNET...ROUND
  MOUNTAIN...BUCHANAN DAM...LAKEWAY...LAGO VISTA...GRANITE SHOALS...
  HORSESHOE BAY...THE HILLS...MEADOWLAKES...JOHNSON CITY...HIGHLAND
  HAVEN...SPICEWOOD...PEDERNALES FALLS STATE PARK...OATMEAL...CYPRESS
  MILL AND INKS LAKE STATE PARK.

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 3067 9802 3062 9805 3061 9803 3063 9801
      3061 9799 3062 9798 3042 9780 3031 9810
      3036 9817 3027 9821 3017 9847 3078 9844
      3088 9820
TIME...MOT...LOC 2216Z 335DEG 22KT 3068 9826 

HAIL...1.50IN
WIND...60MPH
 
$$

LJH
1 follow-up statement
187 
WWUS54 KEWX 182300
SVSEWX

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

TXC031-053-299-453-182315-
/O.CON.KEWX.SV.W.0029.000000T0000Z-160318T2315Z/
BURNET TX-TRAVIS TX-BLANCO TX-LLANO TX-
600 PM CDT FRI MAR 18 2016

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 615 PM CDT
FOR SOUTHWESTERN BURNET...NORTHWESTERN TRAVIS...NORTHEASTERN BLANCO
AND SOUTHEASTERN LLANO COUNTIES...

AT 559 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR CYPRESS
MILL... OR NEAR ROUND MOUNTAIN...MOVING SOUTH AT 30 MPH. THIS STORM
HAS A HISTORY OF PRODUCING QUARTER SIZE HAIL AND 60 MPH WIND GUSTS.

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...
AUSTIN...CEDAR PARK...MARBLE FALLS...ROUND MOUNTAIN...LAKEWAY...LAGO
VISTA...GRANITE SHOALS...HORSESHOE BAY...THE HILLS...MEADOWLAKES...JOHNSON
CITY...SPICEWOOD...HUDSON BEND...SMITHWICK...PEDERNALES FALLS STATE PARK...
CYPRESS MILL...MANSFIELD DAM...JONESTOWN...BRIARCLIFF AND COTTONWOOD
SHORES.

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.

&&

LAT...LON 3067 9802 3062 9805 3061 9803 3063 9801
      3061 9799 3062 9798 3042 9780 3031 9810
      3036 9817 3027 9821 3017 9847 3059 9844
      3061 9806
TIME...MOT...LOC 2259Z 344DEG 26KT 3041 9830 

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

LJH

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 18, 4:13 PM CDTSpecial Weather StatementEWXKerr47 min
Mar 18, 4:20 PM CDTSpecial Weather StatementEWXReal40 min
Mar 18, 4:38 PM CDTSevere Thunderstorm WarningEWXGillespie, Kendall, Kerr37 min
Mar 18, 4:42 PM CDTSevere Thunderstorm WarningEWXBurnet48 min
Mar 18, 4:59 PM CDTAreal Flood AdvisoryEWXGillespie, Kerr, Real2 hr
Mar 18, 5:11 PM CDTSevere Thunderstorm WarningEWXBandera, Gillespie, Kendall, Kerr64 min
Mar 18, 5:17 PM CDTSpecial Weather StatementEWXReal43 min
Mar 18, 5:50 PM CDTSevere Thunderstorm WarningEWXVal Verde85 min
Mar 18, 6:09 PM CDTSevere Thunderstorm WarningEWXBlanco, Gillespie, Hays, Kendall66 min
Mar 18, 6:13 PM CDTSevere Thunderstorm WarningEWXBandera, Edwards, Kerr, Real62 min
Mar 18, 6:19 PM CDTFlash Flood WarningEWXEdwards, Real3 hr
Mar 18, 6:42 PM CDTSpecial Weather StatementEWXKendall33 min
Mar 18, 6:42 PM CDTSevere Thunderstorm WarningEWXBlanco, Burnet, Llano, Travis48 min
Mar 18, 6:49 PM CDTSevere Thunderstorm WarningEWXCaldwell, Comal, Guadalupe, Hays56 min

Nearby

Severe Thunderstorm Warnings in Texas, 2016Every 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.