Alert archive / Texas / Special Weather Statements in 2018

Special Weather Statement, NWS Austin/San Antonio, TX

May 3, 2018Zavala County, Texas

NWS Austin/San Antonio, TX issued this special weather statement at May 3, 2018, 9:11 PM CDT for Zavala County, Texas. It was in force for 64 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: May 3, 2018, 9:11 PM CDT (02:11 UTC)
Expired: May 3, 2018, 10:15 PM CDT
In force: 64 min
Issued by: NWS Austin/San Antonio, TX

County Zavala County, TX

The radar

The Laughlin AFB radar (KDFX), 101 km from the middle of the area, began a volume at 02:11 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 00:00Z, 2.2 hours before the alert went out and 152 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: 376 J/kg
Mixed-layer CIN: -39 J/kg
Mixed-layer LCL: 2594 m above ground
0-6 km bulk shear: 47 kt
0-1 km storm-relative helicity: 43 m²/s²
0-3 km storm-relative helicity: 2 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.6

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 May 3, 6:19 PM CDT, 2 hours 52 minutes earlier.

Area forecast discussion, May 3, 6:19 PM CDT, 2 hours 52 minutes before

Area Forecast Discussion
National Weather Service Austin/San Antonio TX
619 PM CDT Thu May 3 2018

.AVIATION...
VFR conditions at all area airports will continue through the
evening. There are isolated thunderstorms in Mexico west southwest of
DRT and one or two of these could move across the airport between
about 01Z and 03Z and lower visibility to MVFR. All terminals will
drop to MVFR/IFR ceilings overnight. There will be low chances for
showers and thunderstorms overnight, but probability is too low to
include in the TAFs. Friday showers and thunderstorms are likely
starting around 16Z and continuing through the day. Continuous
rainfall is not likely, but timing is too uncertain to break out dry
times. Either way ceilings will be MVFR, but visibility will vary
between VFR and MVFR depending on whether it's raining.

&&

.PREV DISCUSSION... /ISSUED 315 PM CDT Thu May 3 2018/

SHORT TERM (Tonight through Friday Night)...
A stout cap remains in place across South Central Texas this
afternoon. Even with clearing in the west, we expect the cap to hold
and there only be isolated light showers this evening. An upper level
jet streak and the approach of the longwave trough axis should force
new convection to develop on the Mexican plateau and propagate
northeastward into the Rio Grande Plains around 03-06Z. Some of the
storm structures appear to be supercellular or at least higher end
pulse storms, so we're maintaining the mention of severe storms west
of U.S. 83 late tonight. The cold pools from the isolated storms
should congeal, and given the maximum diurnal influence of the LLJ,
support a non-severe MCS moving across the eastern half of the area
Friday morning. The outflow boundary from the MCS and the arrival of
the cold front will provide the foci for continuing showers and
thunderstorms through Friday afternoon and night. While the
thermodynamic profile is not favorable for torrential rain, training
of storms and the consistent forcing for a 18-24 hour period should
lead to many places receiving 1-2 inches of rain, with isolated spots
receiving up to 4 inches, especially in the eastern Hill Country.

LONG TERM (Saturday through Thursday)...
The cold front will push south on Saturday, allowing high pressure
to start drying out the area from northwest to southeast. Midlevel
zonal flow will maintain dry and mild conditions all of next week,
with no rain expected through Mother's Day.

&&

.PRELIMINARY POINT TEMPS/POPS...
Austin Camp Mabry              70  75  60  82  59 /  50  90  70  -    0
Austin Bergstrom Intl Airport  70  75  59  81  57 /  40  90  70  10   0
New Braunfels Muni Airport     71  76  60  81  58 /  40  90  70  20   0
Burnet Muni Airport            68  72  56  80  56 /  70  90  50  -    0
Del Rio Intl Airport           71  81  62  87  61 /  70  80  40  -    0
Georgetown Muni Airport        69  73  57  81  56 /  60  90  70  -    0
Hondo Muni Airport             72  75  60  83  57 /  70  90  60  20   0
San Marcos Muni Airport        70  76  60  82  58 /  40  90  70  20   0
La Grange - Fayette Regional   72  80  62  81  58 /  20  70  70  20  -
San Antonio Intl Airport       71  76  61  81  60 /  50  90  70  20   0
Stinson Muni Airport           72  77  63  81  60 /  50  90  70  20   0

&&

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

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

Hazardous weather outlook, May 3, 2:46 PM CDT, 6 hours 25 minutes before

Hazardous Weather Outlook
National Weather Service Austin/San Antonio TX
246 PM CDT Thu May 3 2018

TXZ171>173-183>194-202>209-217>225-228-042000-
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-
246 PM CDT Thu May 3 2018

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

.DAY ONE...This Afternoon And Tonight.

Isolated strong to severe storms are possible after midnight
across the Rio Grande plains. The main threats will be large hail
and damaging winds.

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

Thunderstorms with heavy rains are possible Friday into Friday
night mainly along and west of the I-35 corridor. Isolated strong
storms are also possible.

.SPOTTER INFORMATION STATEMENT...

Spotters are urged to report severe weather and flooding today
through Friday night.

In the hours before

Special weather statement, May 3, 7:32 PM CDT, 1 hour 39 minutes before

Special Weather Statement
National Weather Service Austin/San Antonio TX
732 PM CDT THU MAY 3 2018

TXZ228-040130-
Dimmit TX-
732 PM CDT THU MAY 3 2018

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

At 732 PM CDT, Doppler radar was tracking a strong thunderstorm near
Las Tiendas, or 15 miles west of Encinal, moving north at 15 mph.

Nickel size hail and wind gusts of 50 to 55 mph will be possible with
this storm.

Locations impacted include...
Catarina, Light and Chaparral Wildlife Management Area.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 2839 9967 2833 9939 2821 9940 2820 9949
      2820 9969
TIME...MOT...LOC 0032Z 193DEG 11KT 2797 9960

YB

Special weather statement, May 3, 8:28 PM CDT, 43 minutes before

Special Weather Statement
National Weather Service Austin/San Antonio TX
828 PM CDT THU MAY 3 2018

TXZ183-040230-
Val Verde TX-
828 PM CDT THU MAY 3 2018

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN VAL VERDE COUNTY
UNTIL 930 PM CDT...

At 827 PM CDT, Doppler radar was tracking a strong thunderstorm 17
miles south of Del Rio, moving north at 10 mph.

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

Locations impacted include...
Del Rio, Lake View, Amistad Village, Amistad Recreation Area -
Governors Landing, Amistad Recreation Area - Diablo East, Amistad
Recreation Area - Black Brush Point, Laughlin AFB, Amistad Recreation
Area - Long Point, Val Verde Park, Cienegas Terrace, Amistad
Recreation Area - Rock Quarry Campground, Amistad Recreation Area -
San Pedro Canyon, Amistad Recreation Area - 277 South Boat Ramp and
Amistad Recreation Area - 277 North Campground.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 2948 10070 2943 10070 2933 10073 2932 10075
      2929 10074 2925 10076 2924 10076 2928 10087
      2931 10089 2933 10094 2935 10095 2937 10101
      2943 10105 2952 10105
TIME...MOT...LOC 0127Z 184DEG 9KT 2911 10094

YB

Special weather statement, May 3, 8:30 PM CDT, 41 minutes before

Special Weather Statement
National Weather Service Austin/San Antonio TX
830 PM CDT THU MAY 3 2018

TXZ228-040230-
Dimmit TX-
830 PM CDT THU MAY 3 2018

...SIGNIFICANT WEATHER ADVISORY FOR EASTERN DIMMIT COUNTY UNTIL 930
PM CDT...

At 830 PM CDT, Doppler radar was tracking a strong thunderstorm over
Catarina, or 14 miles south of Big Wells, moving north at 15 mph.

Nickel size hail and wind gusts of 50 to 55 mph will be possible with
this storm.

Locations impacted include...
Big Wells, Brundage, Chaparral Wildlife Management Area, Catarina,
Light and Las Vegas.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 2864 9970 2864 9946 2863 9939 2821 9940
      2820 9976
TIME...MOT...LOC 0130Z 191DEG 12KT 2837 9961

YB

Special weather statement, May 3, 9:11 PM CDT, 0 minutes before

Special Weather Statement
National Weather Service Austin/San Antonio TX
911 PM CDT THU MAY 3 2018

TXZ218-219-228-040315-
Frio TX-Dimmit TX-Zavala TX-
911 PM CDT THU MAY 3 2018

...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN DIMMIT...
SOUTHEASTERN ZAVALA AND SOUTHWESTERN FRIO COUNTIES UNTIL 1015 PM
CDT...

At 911 PM CDT, Doppler radar was tracking a strong thunderstorm over
Big Wells, moving north at 20 mph.

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

Locations impacted include...
Big Wells, Loma Vista, Las Vegas, and Brundage.

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 2852 9966 2890 9971 2890 9935 2864 9938
      2864 9939 2852 9940
TIME...MOT...LOC 0211Z 181DEG 16KT 2860 9956

The office that day

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

Issued	Product	Office	Counties	Lasted
May 3, 7:32 PM CDT	Special Weather Statement	EWX	Dimmit	58 min
May 3, 8:28 PM CDT	Special Weather Statement	EWX	Kinney	62 min
May 3, 8:30 PM CDT	Special Weather Statement	EWX	Dimmit	60 min
May 3, 8:43 PM CDT	Severe Thunderstorm Warning	EWX	Kinney, Val Verde	41 min
May 3, 9:42 PM CDT	Special Weather Statement	EWX	Dimmit	63 min
May 3, 10:14 PM CDT	Severe Thunderstorm Warning	EWX	Dimmit	61 min
May 3, 10:40 PM CDT	Special Weather Statement	EWX	Kinney	50 min
May 3, 10:52 PM CDT	Severe Thunderstorm Warning	EWX	Kinney, Maverick	34 min
May 3, 10:56 PM CDT	Special Weather Statement	EWX	Maverick	49 min
May 3, 11:18 PM CDT	Severe Thunderstorm Warning	EWX	Kinney, Uvalde	57 min
May 3, 11:19 PM CDT	Special Weather Statement	EWX	Real	56 min
May 3, 11:51 PM CDT	Areal Flood Advisory	EWX	Kinney, Uvalde	3 hr
May 4, 12:16 AM CDT	Special Weather Statement	EWX	Uvalde	44 min
May 4, 12:39 AM CDT	Special Weather Statement	EWX	Real	66 min
May 4, 12:48 AM CDT	Areal Flood Advisory	EWX	Bandera, Real, Uvalde	3 hr
May 4, 1:58 AM CDT	Areal Flood Advisory	EWX	Bandera, Kerr	3 hr
May 4, 2:19 AM CDT	Special Weather Statement	EWX	Val Verde	56 min
May 4, 2:37 AM CDT	Severe Thunderstorm Warning	EWX	Val Verde	53 min
May 4, 3:10 AM CDT	Areal Flood Advisory	EWX	Val Verde	3 hr
May 4, 3:23 AM CDT	Severe Thunderstorm Warning	EWX	Edwards, Val Verde	67 min
May 4, 4:29 AM CDT	Severe Thunderstorm Warning	EWX	Edwards	61 min
May 4, 5:17 AM CDT	Areal Flood Advisory	EWX	Edwards, Val Verde	3 hr
May 4, 5:25 AM CDT	Severe Thunderstorm Warning	EWX	Edwards, Kerr	50 min
May 4, 5:39 AM CDT	Special Weather Statement	EWX	Edwards	51 min
May 4, 6:00 AM CDT	Severe Thunderstorm Warning	EWX	Edwards, Real	45 min
May 4, 6:09 AM CDT	Areal Flood Advisory	EWX	Edwards	2 hr
May 4, 6:40 AM CDT	Severe Thunderstorm Warning	EWX	Bandera, Edwards, Kerr, Real, Uvalde	65 min
May 4, 7:07 AM CDT	Areal Flood Advisory	EWX	Real	3 hr
May 4, 7:10 AM CDT	Special Weather Statement	EWX	Gillespie	50 min
May 4, 7:46 AM CDT	Severe Thunderstorm Warning	EWX	Bandera, Bexar, Kendall, Kerr, Medina, Uvalde	59 min
May 4, 8:00 AM CDT	Special Weather Statement	EWX	Blanco	45 min
May 4, 8:21 AM CDT	Areal Flood Advisory	EWX	Bandera, Gillespie, Kerr, Llano, Real, Uvalde	3 hr
May 4, 8:44 AM CDT	Special Weather Statement	EWX	Bexar	46 min
May 4, 8:45 AM CDT	Severe Thunderstorm Warning	EWX	Blanco, Hays, Travis	60 min
May 4, 8:57 AM CDT	Areal Flood Advisory	EWX	Blanco, Burnet, Kendall	3 hr
May 4, 8:57 AM CDT	Areal Flood Advisory	EWX	Medina	3 hr
May 4, 9:19 AM CDT	Special Weather Statement	EWX	Comal	41 min
May 4, 9:29 AM CDT	Severe Thunderstorm Warning	EWX	Bexar, Comal, Guadalupe	35 min
May 4, 9:31 AM CDT	Areal Flood Advisory	EWX	Bexar, Comal, Hays, Travis	3 hr
May 4, 9:47 AM CDT	Special Weather Statement	EWX	Travis	43 min
May 4, 10:29 AM CDT	Flash Flood Warning	EWX	Hays, Travis	3 hr
May 4, 11:44 AM CDT	Areal Flood Advisory	EWX	Bastrop, Lee, Williamson	3 hr
May 4, 11:50 AM CDT	Special Weather Statement	EWX	Williamson	25 min
May 4, 11:55 AM CDT	Areal Flood Advisory	EWX	Williamson	3 hr
May 4, 12:07 PM CDT	Areal Flood Advisory	EWX	Medina	3 hr
May 4, 1:32 PM CDT	Areal Flood Advisory	EWX	Hays, Travis	3 hr

Nearby

Special Weather Statements in Texas, 2018 Every special weather statement 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.