Alert archive / Texas / Severe Thunderstorm Warnings in 2015

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

April 19, 2015Fayette County, Texas

NWS Austin/San Antonio, TX issued this severe thunderstorm warning at Apr 19, 2015, 4:18 PM CDT for Fayette County, Texas. It was in force for 27 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: Apr 19, 2015, 4:18 PM CDT (21:18 UTC)
Expired: Apr 19, 2015, 4:45 PM CDT
In force: 27 min
Issued by: NWS Austin/San Antonio, TX
Area: Storm-based polygon
Hail: 1.75 in
Wind: 60.0 mph

County Fayette County, TX

The radar

The Austin/San Antonio radar (KEWX), 97 km from the middle of the area, began a volume at 21:19 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.

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 19, 2:31 PM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Corpus Christi, TX (KCRP), launched 12:00Z, 9.3 hours before the alert went out and 242 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: 1640 J/kg
Mixed-layer CIN: -115 J/kg
Mixed-layer LCL: 867 m above ground
0-6 km bulk shear: 51 kt
0-1 km storm-relative helicity: 95 m²/s²
0-3 km storm-relative helicity: 83 m²/s²
Significant tornado parameter: 0.3
Supercell composite: 3.1

Open this sounding in Storm Lab

The text

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

025 
WUUS54 KEWX 192118
SVREWX
TXC149-192145-
/O.NEW.KEWX.SV.W.0039.150419T2118Z-150419T2145Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
418 PM CDT SUN APR 19 2015

THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  WEST CENTRAL FAYETTE COUNTY IN SOUTH CENTRAL TEXAS...

* UNTIL 445 PM CDT

* AT 417 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR
  SMITHVILLE...MOVING EAST AT 30 MPH.

  HAZARD...GOLF BALL SIZE HAIL AND 60 MPH WIND GUSTS. 

  SOURCE...TRAINED SPOTTER. AT 4 PM GOLFBALL-SIZE HAIL WAS
           REPORTED 3 MILES SOUTHWEST OF UPTON. 

  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...
  PLUM...WEST POINT AND KIRTLEY. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS STORM IS PRODUCING LARGE HAIL. SEEK SHELTER NOW INSIDE A STURDY
STRUCTURE AND STAY AWAY FROM WINDOWS.

&&

LAT...LON 2981 9703 2988 9722 3001 9707 2996 9690
TIME...MOT...LOC 2117Z 282DEG 28KT 2996 9720 

HAIL...1.75IN
WIND...60MPH
 
$$

JWZ

1 follow-up statement

202 
WWUS54 KEWX 192137
SVSEWX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
437 PM CDT SUN APR 19 2015

TXC149-192145-
/O.CON.KEWX.SV.W.0039.000000T0000Z-150419T2145Z/
FAYETTE TX-
437 PM CDT SUN APR 19 2015

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 445 PM CDT
FOR WEST CENTRAL FAYETTE COUNTY...

AT 436 PM CDT...TRAINED SPOTTERS CONTINUE TO REPORT A SEVERE 
THUNDERSTORM WITH HAIL UP TO GOLFBALL-SIZE...LOCATED 8 MILES NORTH 
OF MULDOON...OR 9 MILES SOUTHEAST OF SMITHVILLE...MOVING EAST AT 30 
MPH.

HAZARD...GOLF BALL SIZE HAIL. 

SOURCE...TRAINED SPOTTERS.

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

LOCATIONS IMPACTED INCLUDE...
PLUM...WEST POINT AND KIRTLEY. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

THIS STORM IS PRODUCING LARGE HAIL. SEEK SHELTER NOW INSIDE A STURDY
STRUCTURE AND STAY AWAY FROM WINDOWS.

&&

LAT...LON 2984 9701 2990 9719 3001 9707 2996 9690
TIME...MOT...LOC 2136Z 282DEG 28KT 2993 9703 

HAIL...1.75IN
WIND...<50MPH
 
$$

JWZ

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 18, 7:01 PM CDT	Severe Thunderstorm Warning	EWX	Llano	29 min
Apr 18, 7:09 PM CDT	Special Weather Statement	EWX	Kendall	51 min
Apr 18, 7:32 PM CDT	Special Weather Statement	EWX	Burnet	43 min
Apr 18, 7:35 PM CDT	Special Weather Statement	EWX	Gillespie	40 min
Apr 18, 8:18 PM CDT	Severe Thunderstorm Warning	EWX	Blanco, Hays	27 min
Apr 18, 8:25 PM CDT	Special Weather Statement	EWX	Gillespie	50 min
Apr 18, 8:44 PM CDT	Severe Thunderstorm Warning	EWX	Blanco, Burnet, Hays, Travis	31 min
Apr 18, 9:13 PM CDT	Severe Thunderstorm Warning	EWX	Travis	32 min
Apr 18, 9:20 PM CDT	Special Weather Statement	EWX	Gillespie	40 min
Apr 18, 9:35 PM CDT	Areal Flood Advisory	EWX	Gillespie, Kendall, Kerr	3 hr
Apr 18, 9:44 PM CDT	Special Weather Statement	EWX	Bastrop, Caldwell, Lee	46 min
Apr 18, 11:25 PM CDT	Special Weather Statement	EWX	Kendall	35 min
Apr 19, 9:59 AM CDT	River Flood Warning	EWX	DeWitt	36 hr
Apr 19, 2:50 PM CDT	Special Weather Statement	EWX	Lee	25 min
Apr 19, 2:55 PM CDT	Severe Thunderstorm Warning	EWX	Lee	35 min
Apr 19, 3:24 PM CDT	Special Weather Statement	EWX	Caldwell	51 min
Apr 19, 3:39 PM CDT	Special Weather Statement	EWX	Bastrop	36 min
Apr 19, 3:53 PM CDT	Severe Thunderstorm Warning	EWX	Bastrop	37 min
Apr 19, 4:31 PM CDT	Special Weather Statement	EWX	Lee	14 min
Apr 19, 4:43 PM CDT	Severe Thunderstorm Warning	EWX	Fayette	32 min
Apr 19, 4:49 PM CDT	Special Weather Statement	EWX	Lee	41 min
Apr 19, 5:13 PM CDT	Severe Thunderstorm Warning	EWX	Fayette	47 min
Apr 19, 5:50 PM CDT	Severe Thunderstorm Warning	EWX	Fayette	40 min
Apr 19, 6:49 PM CDT	Special Weather Statement	EWX	Fayette	41 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.