Alert archive / Texas / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 154, NWS Austin/San Antonio, TX

June 6, 20194 counties in Texas

NWS Austin/San Antonio, TX issued this severe thunderstorm warning at Jun 6, 2019, 3:25 PM CDT for 4 counties in Texas. It was in force for 65 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: Jun 6, 2019, 3:25 PM CDT (20:25 UTC)
Expired: Jun 6, 2019, 4:30 PM CDT
In force: 65 min
Issued by: NWS Austin/San Antonio, TX
Area: Storm-based polygon
Hail: 1.0 in
Wind: 70.0 mph

Counties Bastrop County, TX, Lee County, TX, Travis County, TX, Williamson County, TX

The radar

The Ft Hood radar (KGRK), 31 km from the middle of the area, began a volume at 20:25 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
Jun 6, 3:31 PM CDT	HAIL 1	4 Ssw Pflugerville, TX	PARMER AT DESSAU.
Jun 6, 3:37 PM CDT	HAIL 0.7	2 N Manor, TX

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

Did it verify

Verified. The Iowa Environmental Mesonet's Cow matched one storm report to this severe thunderstorm warning; the first came 6 minutes after it went out.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The watch it was issued in

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

Issued	Product	Office	Lasted
Jun 6, 2:29 PM CDT	Severe Thunderstorm Watch	SPC	8 hr

The nearest sounding before it

Fort Worth, TX (KFWD), launched 12:00Z, 8.4 hours before the alert went out and 265 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: 31 J/kg
Mixed-layer CIN: -339 J/kg
Mixed-layer LCL: 1450 m above ground
0-6 km bulk shear: 25 kt
0-1 km storm-relative helicity: 1 m²/s²
0-3 km storm-relative helicity: 23 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

649 
WUUS54 KEWX 062025
SVREWX
TXC021-287-453-491-062130-
/O.NEW.KEWX.SV.W.0154.190606T2025Z-190606T2130Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Austin/San Antonio TX
325 PM CDT Thu Jun 6 2019

The National Weather Service in Austin San Antonio has issued a

* Severe Thunderstorm Warning for...
  Southeastern Williamson County in south central Texas...
  Northeastern Travis County in south central Texas...
  North central Bastrop County in south central Texas...
  Northwestern Lee County in south central Texas...

* Until 430 PM CDT.

* At 325 PM CDT, a severe thunderstorm was located near Manor, or
  near Pflugerville, moving east at 30 mph.

  HAZARD...70 mph wind gusts and quarter size hail.

  SOURCE...Radar indicated.

  IMPACT...Hail damage to vehicles is expected. Expect considerable 
           tree damage. Wind damage is also likely to mobile homes, 
           roofs, and outbuildings.

* Locations impacted include...
  Austin, Pflugerville, Taylor, Elgin, Windemere, Hutto, Manor,
  Thrall, Coupland, Knobb Springs, Rices Crossing, Blue, Beyarsville,
  Wells Branch, Noack, Sandoval and Butler.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 3049 9716 3047 9716 3046 9715 3035 9709
      3025 9769 3043 9775 3066 9725
TIME...MOT...LOC 2025Z 252DEG 27KT 3037 9762 

HAIL...1.00IN
WIND...70MPH
 
$$

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Austin/San Antonio, TX wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 6, 2:39 PM CDT, 46 minutes earlier.

Area forecast discussion, Jun 6, 2:39 PM CDT, 46 minutes before

Area Forecast Discussion
National Weather Service Austin/San Antonio TX
239 PM CDT Thu Jun 6 2019

.SHORT TERM (Tonight through Friday Night)...
Convection has develop across the Hill Country this afternoon as
convective inhibition eroded and convective temperatures where
reached. The convection has developed in a weak low level convergent
zone. This activity is expected to move east into portions of the
I-35 corridor between San Antonio and Austin through the remainder of
the afternoon and early evening, then east of the I-35 corridor mid
evening.

Forecast soundings indicate steep mid level lapse rates of around
7 degC/km yielding SBCAPE and MLCAPE values in excess of 3000 J/kg.
Inverted V sounding also evident, indicating DCAPE values of around
1300 J/kg. Deep layer shear values, of nearly 40kts will be present.
So initially supercellular mode will continue across the Hill
Country and into the I-35 corridor. Over time cold-pool development
may lead to development of a broken complex east of I-35 and I-37,
with the severe wind threat becoming the main issue this evening.
A Severe Thunderstorm Watch has been issued for portions of the Hill
Country and along and east of I-35 through 10 PM.

In terms of flash flooding potential, the overall quick speed of the
system should mitigate widespread concerns. Nevertheless, isolated
heavier downpours could lead to very localized flash flooding
concerns.

Convection should move east and south of the area overnight. Warm
and dry conditions are forecast for Friday.

&&

.LONG TERM (Saturday through Thursday)...
A ridge will build over South Central Texas over the weekend leading
to very warm temperatures. Temperatures in the mid and upper 90s are
forecast over the Hill Country and Central Texas, upper 90s to 102
around the San Antonio metro and southeast, and 100 to 107 along the
Rio Grande. With recent rainfall, near surface moisture will keep
heat index values elevated, into Heat Advisory criteria for several
locations. A Heat Advisory will likely be needed for a portion of the
area.

A trough moving through the Central Plains Sunday night into Monday
will weaken the ridge from the north. This will allow a cold front
to enter the region, bringing a chance of showers and thunderstorms
and cooler temperatures.

&&

.PRELIMINARY POINT TEMPS/POPS...
Austin Camp Mabry              72  93  72  96  75 /  20   0   0   0   0
Austin Bergstrom Intl Airport  71  94  71  95  73 /  20  -    0   0   0
New Braunfels Muni Airport     71  96  71  97  74 /  20   0   0   0   0
Burnet Muni Airport            68  91  69  95  74 /  10   0   0   0   0
Del Rio Intl Airport           72 100  75 102  78 /   0   0   0   0   0
Georgetown Muni Airport        69  92  69  95  73 /  20  -    0   0   0
Hondo Muni Airport             70 101  73 101  75 /   0   0   0   0   0
San Marcos Muni Airport        70  96  71  97  73 /  20  -    0   0   0
La Grange - Fayette Regional   74  95  72  96  74 /  20  10   0   0   0
San Antonio Intl Airport       74  98  74  98  77 /  20   0   0   0   0
Stinson Muni Airport           75  98  75 100  77 /  20   0   0   0   0

&&

.EWX WATCHES/WARNINGS/ADVISORIES...
None.

&&

Aviation...17
Short-Term/Long-Term...Runyen
Public Service/Data Collection...33

Hazardous weather outlook, Jun 6, 2:42 PM CDT, 43 minutes before

Hazardous Weather Outlook...UPDATED
National Weather Service Austin/San Antonio TX
242 PM CDT Thu Jun 6 2019

TXZ171>173-183>194-202>209-217>225-228-071945-
Llano-Burnet-Williamson-Val Verde-Edwards-Real-Kerr-Bandera-
Gillespie-Kendall-Blanco-Hays-Travis-Bastrop-Lee-Kinney-Uvalde-
Medina-Bexar-Comal-Guadalupe-Caldwell-Fayette-Maverick-Zavala-
Frio-Atascosa-Wilson-Karnes-Gonzales-De Witt-Lavaca-Dimmit-
242 PM CDT Thu Jun 6 2019

This Hazardous Weather Outlook is for South-Central Texas..

.DAY ONE...This Afternoon And Tonight.

There is currently a slight to enhanced risk for scattered severe
storms this afternoon through the early evening across the Hill
Country and along and east of the I-35 corridor. Quarter to
golfball sized hail and damaging winds gusts in excess of 60 mph
will be the main threats with any severe storms. A Severe
Thunderstorm Watch has been issued through 10 PM this evening.
Also, isolated pockets of heavy rainfall leading to localized
flash flooding will be possible from the stronger storms.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

Hot and humid conditions are expected over the area Friday
through Sunday. Heat indices are forecast to reach 105 to 110
degrees across many areas Saturday and Sunday, with slightly lower
values expected over the Hill Country. A heat advisory may be
needed.

.SPOTTER INFORMATION STATEMENT...

Spotter reports may be needed this afternoon.

In the hours before

Special weather statement, Jun 6, 2:38 PM CDT, 47 minutes before

Special Weather Statement
National Weather Service Austin/San Antonio TX
238 PM CDT Thu Jun 6 2019

TXZ190>192-062030-
Blanco TX-Hays TX-Travis TX-
238 PM CDT Thu Jun 6 2019

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN HAYS...WEST CENTRAL
TRAVIS AND NORTHEASTERN BLANCO COUNTIES UNTIL 330 PM CDT...

At 238 PM CDT, Doppler radar was tracking a strong thunderstorm near
Johnson City, or 11 miles south of Round Mountain, moving east at 25
mph.

Penny size hail and winds in excess of 40 mph will be possible with
this storm.

Locations impacted include...
Dripping Springs, Round Mountain, Johnson City, Henly, Pedernales
Falls State Park and Cypress Mill.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is also occurring with this storm, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

&&

LAT...LON 3047 9808 3018 9806 3021 9841 3040 9844
      3045 9820 3043 9813 3047 9810
TIME...MOT...LOC 1938Z 265DEG 22KT 3027 9835

Special weather statement, Jun 6, 3:05 PM CDT, 20 minutes before

Special Weather Statement
National Weather Service Austin/San Antonio TX
305 PM CDT Thu Jun 6 2019

TXZ172-173-190-192-062045-
Blanco TX-Williamson TX-Burnet TX-Travis TX-
305 PM CDT Thu Jun 6 2019

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN WILLIAMSON...
NORTHWESTERN TRAVIS...NORTHEASTERN BLANCO AND SOUTH CENTRAL BURNET
COUNTIES UNTIL 345 PM CDT...

At 305 PM CDT, Doppler radar was tracking a strong thunderstorm near
Spicewood, or 8 miles east of Round Mountain, moving east at 30 mph.

Nickel size hail and winds in excess of 40 mph will be possible with
this storm.

Locations impacted include...
Austin, Round Rock, Cedar Park, Georgetown, Pflugerville, Anderson
Mill, Serenada, Windemere, Leander, Lakeway, Lago Vista, Hudson Bend,
Liberty Hill, Spicewood, Georgetown Dam, Smithwick, Mansfield Dam,
Jonestown, Briarcliff and Point Venture.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is also occurring with this storm, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

&&

LAT...LON 3035 9822 3055 9826 3072 9766 3042 9764
TIME...MOT...LOC 2005Z 261DEG 28KT 3045 9820

Local storm report, Jun 6, 3:07 PM CDT, 18 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
307 PM CDT THU JUN 6 2019

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0306 PM     HAIL             SUNSET VALLEY           30.23N 97.80W
06/06/2019  E0.75 INCH       TRAVIS             TX   TRAINED SPOTTER

&&

CVP

Local storm report, Jun 6, 3:10 PM CDT, 15 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
310 PM CDT THU JUN 6 2019

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0306 PM     HAIL             3 NW MCKINNEY FALLS STA 30.21N 97.75W
06/06/2019  E0.70 INCH       TRAVIS             TX   PUBLIC

            DIME SIZED HAIL AT SH71 AND IH35.

&&

CVP

Local storm report, Jun 6, 3:14 PM CDT, 11 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
314 PM CDT THU JUN 6 2019

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0312 PM     HAIL             3 E SUNSET VALLEY       30.23N 97.75W
06/06/2019  E0.75 INCH       TRAVIS             TX   EMERGENCY MNGR

            PENNY SIZED HAIL AT ST. EDWARDS UNIVERSITY.

&&

CVP

Local storm report, Jun 6, 3:22 PM CDT, 3 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
322 PM CDT THU JUN 6 2019

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0318 PM     HAIL             5 NNE AUSTIN            30.34N 97.70W
06/06/2019  E0.70 INCH       TRAVIS             TX   PUBLIC

            IH-35 AT 183.

&&

CVP

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 6, 1:03 AM CDT	Special Weather Statement	EWX	Llano	42 min
Jun 6, 1:04 AM CDT	Special Weather Statement	EWX	Gillespie	41 min
Jun 6, 1:09 AM CDT	Special Weather Statement	EWX	Burnet, Llano	51 min
Jun 6, 1:20 AM CDT	Severe Thunderstorm Warning	EWX	Burnet, Williamson	40 min
Jun 6, 1:40 AM CDT	Special Weather Statement	EWX	Dimmit	35 min
Jun 6, 1:57 AM CDT	Special Weather Statement	EWX	Comal, Hays, Kendall, Travis	48 min
Jun 6, 2:14 AM CDT	Special Weather Statement	EWX	Bandera	46 min
Jun 6, 12:57 PM CDT	Special Weather Statement	EWX	Kendall	48 min
Jun 6, 1:35 PM CDT	Special Weather Statement	EWX	Kendall	40 min
Jun 6, 1:42 PM CDT	Special Weather Statement	EWX	Kendall	48 min
Jun 6, 1:45 PM CDT	Severe Thunderstorm Warning	EWX	Blanco, Gillespie, Kendall	60 min
Jun 6, 2:13 PM CDT	Special Weather Statement	EWX	Kendall	47 min
Jun 6, 2:29 PM CDT	Special Weather Statement	EWX	Travis	46 min
Jun 6, 2:38 PM CDT	Special Weather Statement	EWX	Blanco	52 min
Jun 6, 2:49 PM CDT	Severe Thunderstorm Warning	EWX	Bastrop, Travis	56 min
Jun 6, 3:05 PM CDT	Special Weather Statement	EWX	Williamson	40 min
Jun 6, 3:29 PM CDT	Areal Flood Advisory	EWX	Travis	3 hr
Jun 6, 3:38 PM CDT	Severe Thunderstorm Warning	EWX	Bastrop, Travis	67 min
Jun 6, 3:45 PM CDT	Special Weather Statement	EWX	Comal	45 min
Jun 6, 3:50 PM CDT	Special Weather Statement	EWX	Williamson	40 min
Jun 6, 3:51 PM CDT	Severe Thunderstorm Warning	EWX	Bexar, Comal, Guadalupe	54 min
Jun 6, 4:11 PM CDT	Severe Thunderstorm Warning	EWX	Bastrop, Fayette, Lee	64 min
Jun 6, 4:21 PM CDT	Special Weather Statement	EWX	Guadalupe	39 min
Jun 6, 4:32 PM CDT	Special Weather Statement	EWX	Travis	43 min
Jun 6, 4:42 PM CDT	Special Weather Statement	EWX	Fayette	48 min
Jun 6, 4:45 PM CDT	Special Weather Statement	EWX	Comal	45 min
Jun 6, 4:49 PM CDT	Severe Thunderstorm Warning	EWX	Bastrop, Travis	15 min
Jun 6, 4:59 PM CDT	Special Weather Statement	EWX	Guadalupe	46 min
Jun 6, 4:59 PM CDT	Severe Thunderstorm Warning	EWX	Fayette	61 min
Jun 6, 5:05 PM CDT	Severe Thunderstorm Warning	EWX	Fayette	55 min
Jun 6, 5:11 PM CDT	Severe Thunderstorm Warning	EWX	Fayette	19 min
Jun 6, 5:23 PM CDT	Severe Thunderstorm Warning	EWX	Lavaca	52 min
Jun 6, 5:25 PM CDT	Areal Flood Advisory	EWX	Bexar, Comal, Guadalupe	2 hr
Jun 6, 5:30 PM CDT	Special Weather Statement	EWX	DeWitt, Lavaca	45 min
Jun 6, 5:42 PM CDT	Severe Thunderstorm Warning	EWX	DeWitt, Gonzales, Lavaca	63 min
Jun 6, 5:42 PM CDT	Severe Thunderstorm Warning	EWX	Gonzales, Guadalupe, Karnes, Wilson	63 min
Jun 6, 5:47 PM CDT	Severe Thunderstorm Warning	EWX	Bexar, Wilson	35 min
Jun 6, 6:07 PM CDT	Special Weather Statement	EWX	Guadalupe	38 min
Jun 6, 6:22 PM CDT	Severe Thunderstorm Warning	EWX	DeWitt, Lavaca	53 min
Jun 6, 6:33 PM CDT	Special Weather Statement	EWX	DeWitt	42 min
Jun 6, 6:48 PM CDT	Special Weather Statement	EWX	Bexar	42 min
Jun 6, 6:49 PM CDT	Severe Thunderstorm Warning	EWX	DeWitt, Lavaca	26 min
Jun 6, 6:58 PM CDT	Special Weather Statement	EWX	DeWitt	47 min

Nearby

Severe Thunderstorm Warnings in Texas, 2019 Every severe thunderstorm warning in 2019

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.