Alert archive / Texas / Special Weather Statements in 2017

Special Weather Statement, NWS Austin/San Antonio, TX

June 4, 2017Atascosa County, Texas

NWS Austin/San Antonio, TX issued this special weather statement at Jun 4, 2017, 12:36 AM CDT for Atascosa County, Texas. It was in force for 39 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: Jun 4, 2017, 12:36 AM CDT (05:36 UTC)
Expired: Jun 4, 2017, 1:15 AM CDT
In force: 39 min
Issued by: NWS Austin/San Antonio, TX

County Atascosa County, TX

The radar

The Austin/San Antonio radar (KEWX), 110 km from the middle of the area, began a volume at 05:36 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 nearest sounding before it

Corpus Christi, TX (KCRP), launched 00:00Z, 5.6 hours before the alert went out and 158 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: 1809 J/kg
Mixed-layer CIN: -61 J/kg
Mixed-layer LCL: 1146 m above ground
0-6 km bulk shear: 25 kt
0-1 km storm-relative helicity: 0 m²/s²
0-3 km storm-relative helicity: 18 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.4

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement 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 special weather statement went out at Jun 4, 12:30 AM CDT, 6 minutes earlier.

Area forecast discussion, Jun 4, 12:30 AM CDT, 6 minutes before

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Hazardous weather outlook, Jun 3, 4:50 AM CDT, 19 hours 46 minutes before

Hazardous Weather Outlook
National Weather Service Austin/San Antonio TX
450 AM CDT Sat Jun 3 2017

TXZ171>173-183>194-202>209-217>225-228-041000-
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-
450 AM CDT Sat Jun 3 2017

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

.DAY ONE...Today And Tonight.

Chances of showers and thunderstorms continue today and tonight.
Locally heavy rain causing minor flooding is possible along with
isolated strong storms producing damaging wind gusts and large
hail.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

Chances of showers and thunderstorms continue Sunday through
Wednesday. Isolated strong storms with hail and gusty winds as
well as locally heavy rain causing minor flooding are possible.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not anticipated at this time.

In the hours before

Local storm report, Jun 3, 7:36 PM CDT, 5 hours before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
736 PM CDT SAT JUN 03 2017

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

0710 PM     HAIL             SAN MARCOS              29.88N  97.93W
06/03/2017  E0.25 INCH       HAYS               TX   PUBLIC

            NORTHEAST SAN MARCOS AREA

&&

EVENT NUMBER EWX1700094

SBS

Special weather statement, Jun 3, 7:36 PM CDT, 5 hours before

Special Weather Statement
National Weather Service Austin/San Antonio TX
736 PM CDT SAT JUN 3 2017

TXZ188>190-040115-
Blanco TX-Gillespie TX-Kendall TX-
736 PM CDT SAT JUN 3 2017

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN BLANCO...EASTERN
GILLESPIE AND NORTHWESTERN KENDALL COUNTIES UNTIL 815 PM CDT...

At 736 PM CDT, Doppler radar was tracking a strong thunderstorm over
Luckenbach, or 11 miles southeast of Fredericksburg, moving north at
10 mph.

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

Locations impacted include...
Fredericksburg, Stonewall, Blowout, Luckenbach, Cain City, Sandy,
Willow City, Rocky Hill, Bankersmith, Rocky Creek, Hye, Blumenthal,
Eckert, Crabapple, Lbj State Park, Albert and Grapetown.

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 3048 9887 3049 9841 3002 9857 3008 9890
TIME...MOT...LOC 0036Z 186DEG 8KT 3019 9871

MSL

Local storm report, Jun 3, 7:38 PM CDT, 4 hours 58 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
738 PM CDT SAT JUN 03 2017

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

0650 PM     HAIL             SAN MARCOS              29.88N  97.93W
06/03/2017  E0.25 INCH       HAYS               TX   NWS EMPLOYEE

&&

EVENT NUMBER EWX1700095

SBS

Special weather statement, Jun 3, 8:33 PM CDT, 4 hours 3 minutes before

Special Weather Statement
National Weather Service Austin/San Antonio TX
833 PM CDT SAT JUN 3 2017

TXZ171-172-188>192-040215-
Blanco TX-Gillespie TX-Llano TX-Hays TX-Kendall TX-Burnet TX-
Travis TX-
833 PM CDT SAT JUN 3 2017

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN HAYS...WEST CENTRAL
TRAVIS...BLANCO...EASTERN GILLESPIE...SOUTHEASTERN LLANO...
NORTHEASTERN KENDALL AND SOUTHWESTERN BURNET COUNTIES UNTIL 915 PM
CDT...

At 832 PM CDT, Doppler radar was tracking a strong thunderstorm over
Johnson City, or 10 miles south of Round Mountain, moving east at 30
mph.

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

Locations impacted include...
Austin, Kingsland, Marble Falls, Dripping Springs, Blanco, Round
Mountain, Buchanan Dam, Lakeway, Lago Vista, Granite Shoals, Bee
Cave, Horseshoe Bay, The Hills, Meadowlakes, Johnson City, Stonewall,
Highland Haven, Bear Creek, Inks Lake State Park and Kendalia.

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 these storms.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

&&

LAT...LON 3023 9782 3002 9828 3004 9830 2999 9835
      2987 9862 3047 9865 3081 9837
TIME...MOT...LOC 0132Z 255DEG 28KT 3029 9841

MSL

Local storm report, Jun 3, 9:24 PM CDT, 3 hours 12 minutes before

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Special weather statement, Jun 4, 12:36 AM CDT, 0 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 3, 7:02 PM CDT	Areal Flood Advisory	EWX	Gillespie	118 min
Jun 3, 7:21 PM CDT	Special Weather Statement	EWX	Hays	39 min
Jun 3, 7:36 PM CDT	Special Weather Statement	EWX	Blanco	39 min
Jun 3, 8:12 PM CDT	Areal Flood Advisory	EWX	Val Verde	2 hr
Jun 3, 8:33 PM CDT	Special Weather Statement	EWX	Blanco	42 min
Jun 4, 12:52 AM CDT	Severe Thunderstorm Warning	EWX	Karnes	38 min
Jun 4, 12:56 AM CDT	Areal Flood Advisory	EWX	Atascosa, Karnes, Wilson	3 hr
Jun 4, 1:30 AM CDT	Special Weather Statement	EWX	Karnes	30 min
Jun 4, 4:42 AM CDT	Special Weather Statement	EWX	Fayette	48 min
Jun 4, 7:54 AM CDT	Special Weather Statement	EWX	Comal	51 min
Jun 4, 8:40 AM CDT	Areal Flood Advisory	EWX	Comal, Hays	3 hr
Jun 4, 9:06 AM CDT	Areal Flood Advisory	EWX	Bandera	3 hr
Jun 4, 10:02 AM CDT	Special Weather Statement	EWX	Comal	43 min
Jun 4, 11:11 AM CDT	Areal Flood Advisory	EWX	Guadalupe	3 hr
Jun 4, 2:32 PM CDT	Areal Flood Advisory	EWX	Bandera, Medina	3 hr
Jun 4, 3:11 PM CDT	Special Weather Statement	EWX	Comal	49 min
Jun 4, 3:44 PM CDT	Special Weather Statement	EWX	Guadalupe	46 min
Jun 4, 3:54 PM CDT	Special Weather Statement	EWX	Williamson	51 min
Jun 4, 4:13 PM CDT	Special Weather Statement	EWX	Bastrop, Caldwell, Travis	47 min
Jun 4, 5:08 PM CDT	Special Weather Statement	EWX	Williamson	67 min
Jun 4, 5:19 PM CDT	Special Weather Statement	EWX	DeWitt	41 min
Jun 4, 5:29 PM CDT	Special Weather Statement	EWX	Gonzales	46 min
Jun 4, 5:33 PM CDT	Severe Thunderstorm Warning	EWX	DeWitt, Gonzales	42 min
Jun 4, 5:41 PM CDT	Severe Thunderstorm Warning	EWX	DeWitt, Fayette, Gonzales, Lavaca	79 min
Jun 4, 6:00 PM CDT	Areal Flood Advisory	EWX	Travis, Williamson	2 hr
Jun 4, 6:15 PM CDT	Special Weather Statement	EWX	Fayette	45 min
Jun 4, 6:25 PM CDT	Special Weather Statement	EWX	DeWitt	50 min
Jun 4, 6:35 PM CDT	Severe Thunderstorm Warning	EWX	Lavaca	39 min
Jun 4, 6:49 PM CDT	Special Weather Statement	EWX	Blanco	41 min

Nearby

Special Weather Statements in Texas, 2017 Every special weather statement in 2017

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.