Alert archive / Texas / Severe Thunderstorm Warnings in 2018

Severe Thunderstorm Warning 39, NWS Austin/San Antonio, TX

April 13, 2018Bastrop County, Fayette County, Lee County, Texas

NWS Austin/San Antonio, TX issued this severe thunderstorm warning at Apr 13, 2018, 10:55 PM CDT for Bastrop County, Fayette County, Lee County, Texas. It was in force for 50 min. 1 report 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 13, 2018, 10:55 PM CDT (03:55 UTC)
Expired
Apr 13, 2018, 11:45 PM CDT
In force
50 min
Issued by
NWS Austin/San Antonio, TX
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Bastrop County, TX, Fayette County, TX, Lee County, TX

The radar

The Ft Hood radar (KGRK), 74 km from the middle of the area, began a volume at 03:57 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
Apr 13, 11:03 PM CDTTSTM WND DMGBastrop State Park, TXCITY OF BASTROP OEM REPORTED A ROOF OFF A MOBILE HOME JUST EAST OF DOWNTOWN BASTROP. TIME ESTIMATE VIA RADAR.

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

The nearest sounding before it

Corpus Christi, TX (KCRP), launched 00:00Z, 3.9 hours before the alert went out and 283 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, Corpus Christi, TX at 00:00Z on 2018-04-14Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2973 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, Corpus Christi, TX at 00:00Z on 2018-04-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 140 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
2973 J/kg
Mixed-layer CIN
-191 J/kg
Mixed-layer LCL
1298 m above ground
0-6 km bulk shear
34 kt
0-1 km storm-relative helicity
140 m²/s²
0-3 km storm-relative helicity
146 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.8

Open this sounding in Storm Lab

The text

As transmitted.

780 
WUUS54 KEWX 140355
SVREWX
TXC021-149-287-140445-
/O.NEW.KEWX.SV.W.0039.180414T0355Z-180414T0445Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Austin/San Antonio TX
1055 PM CDT FRI APR 13 2018

The National Weather Service in Austin San Antonio has issued a

* Severe Thunderstorm Warning for...
  Eastern Bastrop County in south central Texas...
  Lee County in south central Texas...
  Central Fayette County in south central Texas...

* Until 1145 PM CDT

* At 1054 PM CDT, a severe thunderstorm was located near Fedor, or 10
  miles northwest of Giddings, moving southeast at 50 mph.

  HAZARD...60 mph wind gusts. 

  SOURCE...Radar indicated. 

  IMPACT...Expect damage to roofs, siding, and trees. 

* Locations impacted include...
  Elgin, Bastrop, Giddings, La Grange, Smithville, Lexington, Dime
  Box, Round Top, Fedor, Paige, Muldoon, Tanglewood, Camp Swift,
  Circle D-KC Estates, Lake Somerville State Park & Trailway,
  Carmine, Knobb Springs, Phelan, Bastrop State Park and Rutersville.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 2978 9707 3027 9746 3042 9726 3046 9713
      3056 9696 3054 9692 3046 9690 3039 9679
      3032 9674 3032 9669 3029 9665 3025 9669
      3024 9674 3020 9674 3016 9679 3014 9677
      3017 9669 3015 9665 3008 9663 2996 9657
TIME...MOT...LOC 0354Z 329DEG 44KT 3027 9709 

HAIL...<.75IN
WIND...60MPH
 
$$

BMW
1 follow-up statement
810 
WWUS54 KEWX 140426
SVSEWX

Severe Weather Statement
National Weather Service Austin/San Antonio TX
1126 PM CDT FRI APR 13 2018

TXC021-149-287-140445-
/O.CON.KEWX.SV.W.0039.000000T0000Z-180414T0445Z/
Bastrop TX-Lee TX-Fayette TX-
1126 PM CDT FRI APR 13 2018

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1145 PM CDT
FOR EASTERN BASTROP...LEE AND CENTRAL FAYETTE COUNTIES...

At 1126 PM CDT, severe thunderstorms were located along a line
extending from near Round Top to near Smithville, moving southeast at
30 mph.

HAZARD...60 mph wind gusts and penny size hail. 

SOURCE...Radar indicated. 

IMPACT...Expect damage to roofs, siding, and trees. 

Locations impacted include...
Bastrop, Giddings, La Grange, Smithville, Lexington, Dime Box, Round
Top, Fedor, Paige, Muldoon, Tanglewood, Camp Swift, Circle D-KC
Estates, Lake Somerville State Park & Trailway, Carmine, Knobb
Springs, Phelan, Bastrop State Park, Rutersville and Northrup.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3018 9739 3042 9726 3046 9713 3056 9696
      3054 9692 3046 9690 3039 9679 3032 9674
      3032 9669 3029 9665 3025 9669 3024 9674
      3020 9674 3016 9679 3014 9677 3017 9669
      3015 9665 3008 9663 2996 9657 2978 9707
TIME...MOT...LOC 0426Z 326DEG 28KT 3009 9667 2995 9714 

HAIL...0.75IN
WIND...60MPH
 
$$

MO

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 13, 7:14 PM CDTSpecial Weather StatementEWXBurnet46 min
Apr 13, 8:01 PM CDTSpecial Weather StatementEWXBurnet59 min
Apr 13, 8:17 PM CDTSevere Thunderstorm WarningEWXBurnet43 min
Apr 13, 8:37 PM CDTSpecial Weather StatementEWXGillespie, Llano38 min
Apr 13, 8:58 PM CDTSpecial Weather StatementEWXWilliamson47 min
Apr 13, 9:21 PM CDTSpecial Weather StatementEWXBurnet54 min
Apr 13, 9:34 PM CDTSevere Thunderstorm WarningEWXBlanco, Burnet, Llano, Travis, Williamson21 min
Apr 13, 9:39 PM CDTSpecial Weather StatementEWXWilliamson51 min
Apr 13, 10:05 PM CDTSpecial Weather StatementEWXWilliamson25 min
Apr 13, 10:21 PM CDTSpecial Weather StatementEWXMedina39 min
Apr 13, 10:24 PM CDTSpecial Weather StatementEWXWilliamson51 min
Apr 13, 10:39 PM CDTSpecial Weather StatementEWXBastrop, Lee, Travis51 min
Apr 13, 10:45 PM CDTSpecial Weather StatementEWXMedina45 min
Apr 13, 11:03 PM CDTSevere Thunderstorm WarningEWXMedina57 min
Apr 13, 11:07 PM CDTSpecial Weather StatementEWXBexar53 min
Apr 13, 11:38 PM CDTSpecial Weather StatementEWXGuadalupe52 min
Apr 13, 11:51 PM CDTSevere Thunderstorm WarningEWXBexar, Guadalupe, Wilson39 min
Apr 14, 12:04 AM CDTSevere Thunderstorm WarningEWXAtascosa, Bexar, Dimmit, Frio, Karnes, Wilson41 min
Apr 14, 12:07 AM CDTSpecial Weather StatementEWXFayette, Gonzales53 min
Apr 14, 12:49 AM CDTSpecial Weather StatementEWXAtascosa, DeWitt, Karnes, Lavaca, Wilson56 min
Apr 14, 3:40 AM CDTRed Flag WarningEWXAtascosa, Bandera, Bastrop, Bexar, Blanco, Burnet and 20 more15 hr

Nearby

Severe Thunderstorm Warnings in Texas, 2018Every severe thunderstorm warning in 2018

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.