Alert archive / Texas / Special Weather Statements in 2018

Special Weather Statement, NWS Austin/San Antonio, TX

July 7, 2018Travis County, Texas

NWS Austin/San Antonio, TX issued this special weather statement at Jul 7, 2018, 3:53 PM CDT for Travis County, Texas. It was in force for 22 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: Jul 7, 2018, 3:53 PM CDT (20:53 UTC)
Expired: Jul 7, 2018, 4:15 PM CDT
In force: 22 min
Issued by: NWS Austin/San Antonio, TX

County Travis County, TX

The radar

The Ft Hood radar (KGRK), 43 km from the middle of the area, began a volume at 20:55 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, 8.9 hours before the alert went out and 323 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: 309 J/kg
Mixed-layer CIN: -81 J/kg
Mixed-layer LCL: 1093 m above ground
0-6 km bulk shear: 20 kt
0-1 km storm-relative helicity: -29 m²/s²
0-3 km storm-relative helicity: 14 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.0

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 Jul 7, 2:47 PM CDT, 1 hour 6 minutes earlier.

Area forecast discussion, Jul 7, 2:47 PM CDT, 1 hour 6 minutes before

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Hazardous weather outlook, Jul 7, 3:18 AM CDT, 12 hours 35 minutes before

Hazardous Weather Outlook
National Weather Service Austin/San Antonio TX
318 AM CDT Sat Jul 7 2018

TXZ171>173-183>194-202>209-217>225-228-080830-
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-
318 AM CDT Sat Jul 7 2018

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

.DAY ONE...Today And Tonight.
Scattered showers and thunderstorms are expected today and
tonight across south central Texas. Severe thunderstorms are not
expected at this time. However, occasional lightning strikes,
gusty winds and brief heavy rain will be possible with the
thunderstorms.

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

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not anticipated.

In the hours before

Special weather statement, Jul 7, 1:21 PM CDT, 2 hours 32 minutes before

Special Weather Statement
National Weather Service Austin/San Antonio TX
121 PM CDT SAT JUL 7 2018

TXZ183-071900-
Val Verde TX-
121 PM CDT SAT JUL 7 2018

...SIGNIFICANT WEATHER ADVISORY FOR NORTH CENTRAL VAL VERDE COUNTY
UNTIL 200 PM CDT...

At 120 PM CDT, Doppler radar was tracking a strong thunderstorm over
Juno, moving southwest at 20 mph.

Wind gusts of 40 to 50 mph and small hail will be possible with this
storm.

Locations impacted include...
Juno and Bakers Crossing.

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 3025 10112 3008 10094 2987 10128 3011 10146
TIME...MOT...LOC 1820Z 062DEG 17KT 3014 10113

RUNYEN

Special weather statement, Jul 7, 2:01 PM CDT, 1 hour 52 minutes before

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Special weather statement, Jul 7, 2:24 PM CDT, 1 hour 29 minutes before

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Special weather statement, Jul 7, 3:53 PM 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
Jul 7, 1:21 PM CDT	Special Weather Statement	EWX	Val Verde	39 min
Jul 7, 2:01 PM CDT	Special Weather Statement	EWX	Lee	29 min
Jul 7, 2:24 PM CDT	Special Weather Statement	EWX	Burnet	36 min
Jul 7, 4:30 PM CDT	Special Weather Statement	EWX	Caldwell, Comal, Guadalupe	45 min
Jul 7, 4:36 PM CDT	Special Weather Statement	EWX	Kinney, Uvalde	24 min
Jul 7, 4:40 PM CDT	Special Weather Statement	EWX	Medina	50 min
Jul 7, 4:58 PM CDT	Special Weather Statement	EWX	Kinney	47 min
Jul 7, 5:12 PM CDT	Areal Flood Advisory	EWX	Caldwell, Hays	2 hr
Jul 7, 5:18 PM CDT	Special Weather Statement	EWX	Frio	42 min
Jul 7, 5:29 PM CDT	Special Weather Statement	EWX	Guadalupe	31 min
Jul 7, 5:43 PM CDT	Special Weather Statement	EWX	Kinney	47 min
Jul 7, 6:45 PM CDT	Severe Thunderstorm Warning	EWX	Medina	30 min

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.