Alert archive / Texas / Special Weather Statements in 2017

Special Weather Statement, NWS Austin/San Antonio, TX

April 11, 2017Dimmit County, Texas

NWS Austin/San Antonio, TX issued this special weather statement at Apr 11, 2017, 5:01 PM CDT for Dimmit County, Texas. It was in force for 44 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 11, 2017, 5:01 PM CDT (22:01 UTC)
Expired: Apr 11, 2017, 5:45 PM CDT
In force: 44 min
Issued by: NWS Austin/San Antonio, TX

County Dimmit County, TX

The radar

The Laughlin AFB radar (KDFX), 131 km from the middle of the area, began a volume at 22:00 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

Del Rio, TX (KDLF), launched 12:00Z, 10.0 hours before the alert went out and 176 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: 2566 J/kg
Mixed-layer CIN: -4 J/kg
Mixed-layer LCL: 517 m above ground
0-6 km bulk shear: 41 kt
0-1 km storm-relative helicity: 90 m²/s²
0-3 km storm-relative helicity: 103 m²/s²
Significant tornado parameter: 1.6
Supercell composite: 7.1

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 Apr 11, 2:28 PM CDT, 2 hours 33 minutes earlier.

Area forecast discussion, Apr 11, 2:28 PM CDT, 2 hours 33 minutes before

Area Forecast Discussion
National Weather Service Austin/San Antonio TX
228 PM CDT Tue Apr 11 2017

.SHORT TERM (Tonight through Wednesday Night)...
Upper air analysis this morning showed a trough extending from the
central plains through Texas to northern Mexico and a ridge to the
west. At the surface, a cold front was stretched from Georgetown to
Pandale. The cold front will stall and dissipate across our CWA and
slight chances for showers and thunderstorms will continue
overnight and Wednesday. Rain chances will retreat to the west
Wednesday night.

&&

.LONG TERM (Thursday through Tuesday)...
A combination of moist low level flow and a series of upper level
disturbances will keep slight chances for thunderstorms in the
forecast each day through Friday. A more intense upper level trough
will swing through the central plains Saturday bringing a better
chance for showers and thunderstorms over the weekend. Another upper
level trough will bring a chance for thunderstorms Monday.

&&

.PRELIMINARY POINT TEMPS/POPS...
Austin Camp Mabry              63  80  64  79  63 /  20  20  10  20  10
Austin Bergstrom Intl Airport  62  80  62  79  62 /  20  20  10  20  10
New Braunfels Muni Airport     63  79  64  79  63 /  20  20  10  20  10
Burnet Muni Airport            62  77  62  76  61 /  20  20  10  20  10
Del Rio Intl Airport           66  80  65  79  65 /  30  30  20  20  10
Georgetown Muni Airport        62  79  63  77  62 /  20  20  10  20  10
Hondo Muni Airport             64  80  64  80  63 /  20  20  10  20  10
San Marcos Muni Airport        63  79  63  79  63 /  20  20  10  20  10
La Grange - Fayette Regional   64  80  63  80  62 /  20  20  10  20  -
San Antonio Intl Airport       64  79  65  79  64 /  20  20  10  20  10
Stinson Muni Airport           65  79  65  79  64 /  20  20  10  20  10

&&

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

Mesoscale/Aviation...Runyen
Synoptic/Grids...05
Public Service/Data Collection...YB

Hazardous weather outlook, Apr 11, 1:55 AM CDT, 15 hours 6 minutes before

Hazardous Weather Outlook...UPDATED
National Weather Service Austin/San Antonio TX
155 AM CDT Tue Apr 11 2017

TXZ171>173-183>194-202>209-217>225-228-120700-
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-
155 AM CDT Tue Apr 11 2017

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

.DAY ONE...Rest of tonight.

A Flash Flood Watch is in effect for most of South Central Texas
through 7 am. Rain totals of 1 to 3 inches with isolated amounts
to 5 inches are possible through Tuesday morning...mainly for
areas along and east of the Edwards escarpment, including the
Interstate 35 corridor. This could lead to flash flooding for
these areas.

In addition...hail up to one inch in diameter and gusty winds up
to 60 mph are possible. A Severe Thunderstorm Watch is also in
effect through 7 am Tuesday, but these threats are secondary to
the main flash flooding threat.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

No hazardous weather is expected for the extended period.

.SPOTTER INFORMATION STATEMENT...

Please submit any flooding or severe weather reports to the
National Weather Service.

In the hours before

Local storm report, Apr 11, 4:06 PM CDT, 55 minutes before

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Special weather statement, Apr 11, 4:07 PM CDT, 54 minutes before

Special Weather Statement
National Weather Service Austin/San Antonio TX
407 PM CDT TUE APR 11 2017

TXZ217-228-112145-
Maverick TX-Dimmit TX-
407 PM CDT TUE APR 11 2017

...SIGNIFICANT WEATHER ADVISORY FOR EAST CENTRAL MAVERICK AND WEST
CENTRAL DIMMIT COUNTIES UNTIL 445 PM CDT...

At 406 PM CDT, Doppler radar was tracking a strong thunderstorm 8
miles northeast of El Indio, moving southeast at 10 mph.

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

Locations impacted include...
Farias Lake.

LAT...LON 2859 10027 2865 10021 2856 10002 2841 10015
TIME...MOT...LOC 2106Z 301DEG 9KT 2858 10020

PLATT

Special weather statement, Apr 11, 4:17 PM CDT, 44 minutes before

Special Weather Statement
National Weather Service Austin/San Antonio TX
417 PM CDT TUE APR 11 2017

TXZ228-112200-
Dimmit TX-
417 PM CDT TUE APR 11 2017

...SIGNIFICANT WEATHER ADVISORY FOR EASTERN DIMMIT COUNTY UNTIL 500
PM CDT...

At 415 PM CDT, Doppler radar was tracking a strong thunderstorm 8
miles east of Big Wells, moving southeast at 10 mph.

Nickel size hail will be possible with this storm.

Locations impacted include...
Las Vegas and Farm to Market Road 468.

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.

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 2856 9952 2860 9946 2858 9940 2847 9940
TIME...MOT...LOC 2115Z 301DEG 8KT 2854 9943

PLATT

Special weather statement, Apr 11, 4:34 PM CDT, 27 minutes before

Special Weather Statement
National Weather Service Austin/San Antonio TX
434 PM CDT TUE APR 11 2017

TXZ220-112215-
Atascosa TX-
434 PM CDT TUE APR 11 2017

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHERN ATASCOSA COUNTY UNTIL
515 PM CDT...

At 434 PM CDT, Doppler radar was tracking a strong thunderstorm near
Christine, moving southeast at 15 mph.

Nickel size hail will be possible with this storm.

Locations impacted include...
Jourdanton, Charlotte, Christine, Coughran and McCoy.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 2864 9869 2886 9876 2898 9829 2881 9813
TIME...MOT...LOC 2134Z 306DEG 14KT 2877 9861

PLATT

Special weather statement, Apr 11, 4:56 PM CDT, 5 minutes before

Special Weather Statement
National Weather Service Austin/San Antonio TX
456 PM CDT TUE APR 11 2017

TXZ217-228-112245-
Maverick TX-Dimmit TX-
456 PM CDT TUE APR 11 2017

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN MAVERICK AND
SOUTHWESTERN DIMMIT COUNTIES UNTIL 545 PM CDT...

At 455 PM CDT, Doppler radar was tracking a strong thunderstorm 10
miles east of El Indio, moving southeast at 10 mph.

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

This storm will remain over mainly rural areas of southeastern
Maverick and southwestern Dimmit Counties.

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.

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 2848 10022 2855 10007 2829 9991 2823 10017
TIME...MOT...LOC 2155Z 330DEG 10KT 2848 10014

PLATT

Special weather statement, Apr 11, 5:01 PM CDT, 0 minutes before

Special Weather Statement
National Weather Service Austin/San Antonio TX
501 PM CDT TUE APR 11 2017

TXZ228-112245-
Dimmit TX-
501 PM CDT TUE APR 11 2017

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN DIMMIT COUNTY UNTIL
545 PM CDT...

At 459 PM CDT, Doppler radar was tracking a strong thunderstorm near
Catarina, or 17 miles south of Big Wells, moving southeast at 10 mph.

Nickel size hail and wind gusts up to 50 mph will be possible with
this storm.

Locations impacted include...
Catarina, Light and Farm to Market Road 133.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 2835 9962 2843 9948 2833 9939 2832 9940
      2821 9940 2820 9957
TIME...MOT...LOC 2159Z 335DEG 9KT 2832 9954

PLATT

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 10, 8:26 PM CDT	Special Weather Statement	EWX	Llano	49 min
Apr 10, 8:50 PM CDT	Severe Thunderstorm Warning	EWX	Llano	55 min
Apr 10, 9:32 PM CDT	Areal Flood Advisory	EWX	Llano	4 hr
Apr 10, 9:35 PM CDT	Severe Thunderstorm Warning	EWX	Val Verde	70 min
Apr 10, 9:43 PM CDT	Severe Thunderstorm Warning	EWX	Llano	62 min
Apr 10, 10:41 PM CDT	Severe Thunderstorm Warning	EWX	Val Verde	64 min
Apr 10, 10:45 PM CDT	Severe Thunderstorm Warning	EWX	Llano	45 min
Apr 10, 10:50 PM CDT	Flash Flood Warning	EWX	Llano	3 hr
Apr 10, 11:28 PM CDT	Special Weather Statement	EWX	Llano	62 min
Apr 10, 11:46 PM CDT	Severe Thunderstorm Warning	EWX	Val Verde	29 min
Apr 11, 12:13 AM CDT	Severe Thunderstorm Warning	EWX	Val Verde	47 min
Apr 11, 12:29 AM CDT	Special Weather Statement	EWX	Gillespie	76 min
Apr 11, 12:58 AM CDT	Special Weather Statement	EWX	Val Verde	62 min
Apr 11, 2:30 AM CDT	Special Weather Statement	EWX	Kendall	45 min
Apr 11, 3:15 AM CDT	Special Weather Statement	EWX	Kendall	45 min
Apr 11, 3:53 AM CDT	Areal Flood Advisory	EWX	Kendall, Kerr	3 hr
Apr 11, 3:58 AM CDT	Special Weather Statement	EWX	Kendall	47 min
Apr 11, 4:14 AM CDT	Severe Thunderstorm Warning	EWX	Kendall	46 min
Apr 11, 4:24 AM CDT	Flash Flood Warning	EWX	Kendall	3 hr
Apr 11, 4:57 AM CDT	Special Weather Statement	EWX	Kendall	48 min
Apr 11, 5:19 AM CDT	Areal Flood Advisory	EWX	Kendall	116 min
Apr 11, 8:19 AM CDT	Special Weather Statement	EWX	Burnet	26 min
Apr 11, 9:31 AM CDT	Special Weather Statement	EWX	Williamson	44 min
Apr 11, 9:43 AM CDT	Special Weather Statement	EWX	Hays	47 min
Apr 11, 10:08 AM CDT	Severe Thunderstorm Warning	EWX	Blanco, Burnet, Hays, Travis, Williamson	52 min
Apr 11, 10:18 AM CDT	Areal Flood Advisory	EWX	Blanco, Hays, Travis	3 hr
Apr 11, 10:31 AM CDT	Special Weather Statement	EWX	Williamson	44 min
Apr 11, 10:51 AM CDT	Areal Flood Advisory	EWX	Williamson	3 hr
Apr 11, 10:55 AM CDT	Severe Thunderstorm Warning	EWX	Hays	35 min
Apr 11, 11:01 AM CDT	Special Weather Statement	EWX	Blanco	29 min
Apr 11, 11:15 AM CDT	Special Weather Statement	EWX	Caldwell	30 min
Apr 11, 11:19 AM CDT	Special Weather Statement	EWX	Lee	26 min
Apr 11, 11:30 AM CDT	Areal Flood Advisory	EWX	Blanco, Comal, Hays	4 hr
Apr 11, 11:31 AM CDT	Special Weather Statement	EWX	Hays	29 min
Apr 11, 11:40 AM CDT	Severe Thunderstorm Warning	EWX	Blanco, Comal, Hays, Kendall	50 min
Apr 11, 11:56 AM CDT	Special Weather Statement	EWX	Caldwell	49 min
Apr 11, 11:57 AM CDT	Flash Flood Warning	EWX	Caldwell, Hays	3 hr
Apr 11, 12:19 PM CDT	Special Weather Statement	EWX	Travis	41 min
Apr 11, 12:21 PM CDT	Severe Thunderstorm Warning	EWX	Caldwell, Guadalupe, Hays	54 min
Apr 11, 12:34 PM CDT	Severe Thunderstorm Warning	EWX	Comal	41 min
Apr 11, 12:45 PM CDT	Areal Flood Advisory	EWX	Bastrop, Fayette, Lee	4 hr
Apr 11, 12:52 PM CDT	Tornado Warning	EWX	Guadalupe	23 min
Apr 11, 12:56 PM CDT	Special Weather Statement	EWX	Bastrop	49 min
Apr 11, 1:05 PM CDT	Areal Flood Advisory	EWX	Caldwell, Comal, Guadalupe	4 hr
Apr 11, 1:06 PM CDT	Severe Thunderstorm Warning	EWX	Comal, Guadalupe	39 min
Apr 11, 1:15 PM CDT	Tornado Warning	EWX	Guadalupe	30 min
Apr 11, 1:20 PM CDT	Special Weather Statement	EWX	Llano	40 min
Apr 11, 1:24 PM CDT	Flash Flood Warning	EWX	Comal, Guadalupe, Hays	4 hr
Apr 11, 1:44 PM CDT	Severe Thunderstorm Warning	EWX	Guadalupe, Wilson	32 min
Apr 11, 1:57 PM CDT	River Flood Warning	EWX	Blanco	17 hr
Apr 11, 1:57 PM CDT	River Flood Warning	EWX	Hays	23 hr
Apr 11, 1:57 PM CDT	River Flood Warning	EWX	Hays	20 hr
Apr 11, 1:58 PM CDT	Special Weather Statement	EWX	Bexar	47 min
Apr 11, 2:04 PM CDT	Special Weather Statement	EWX	Guadalupe	41 min
Apr 11, 2:07 PM CDT	Areal Flood Advisory	EWX	Bexar	4 hr
Apr 11, 2:21 PM CDT	Areal Flood Advisory	EWX	Blanco, Burnet, Travis, Williamson	3 hr
Apr 11, 2:27 PM CDT	Severe Thunderstorm Warning	EWX	Gonzales, Guadalupe	36 min
Apr 11, 2:36 PM CDT	Areal Flood Advisory	EWX	Guadalupe	3 hr
Apr 11, 2:36 PM CDT	River Flood Warning	EWX	Guadalupe	18 hr
Apr 11, 2:45 PM CDT	Special Weather Statement	EWX	Bexar	45 min
Apr 11, 2:57 PM CDT	Areal Flood Advisory	EWX	Bandera, Medina	3 hr
Apr 11, 3:19 PM CDT	Special Weather Statement	EWX	Frio	41 min
Apr 11, 3:27 PM CDT	Special Weather Statement	EWX	Medina	48 min
Apr 11, 3:32 PM CDT	Special Weather Statement	EWX	Bexar	43 min
Apr 11, 3:35 PM CDT	Special Weather Statement	EWX	Karnes	40 min
Apr 11, 3:48 PM CDT	Severe Thunderstorm Warning	EWX	Frio, Zavala	42 min
Apr 11, 4:00 PM CDT	Areal Flood Advisory	EWX	DeWitt, Gonzales, Karnes, Wilson	3 hr
Apr 11, 4:05 PM CDT	Special Weather Statement	EWX	Uvalde	40 min
Apr 11, 4:07 PM CDT	Special Weather Statement	EWX	Maverick	38 min
Apr 11, 4:17 PM CDT	Special Weather Statement	EWX	Dimmit	43 min
Apr 11, 4:25 PM CDT	Severe Thunderstorm Warning	EWX	Dimmit	50 min
Apr 11, 4:34 PM CDT	Special Weather Statement	EWX	Atascosa	41 min
Apr 11, 4:56 PM CDT	Special Weather Statement	EWX	Dimmit	49 min
Apr 11, 5:06 PM CDT	Severe Thunderstorm Warning	EWX	Dimmit	39 min
Apr 11, 5:14 PM CDT	Areal Flood Advisory	EWX	Uvalde	3 hr
Apr 11, 5:37 PM CDT	Special Weather Statement	EWX	Zavala	53 min
Apr 11, 5:41 PM CDT	Special Weather Statement	EWX	Maverick	49 min
Apr 11, 5:45 PM CDT	River Flood Warning	EWX	Caldwell, Gonzales	33 hr

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.