Alert archive / Texas / Special Weather Statements in 2017

Special Weather Statement, NWS Austin/San Antonio, TX

May 23, 2017Atascosa County, Texas

NWS Austin/San Antonio, TX issued this special weather statement at May 23, 2017, 6:35 PM CDT for Atascosa County, Texas. It was in force for 40 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 23, 2017, 6:35 PM CDT (23:35 UTC)
Expired: May 23, 2017, 7:15 PM CDT
In force: 40 min
Issued by: NWS Austin/San Antonio, TX

County Atascosa County, TX

The radar

The Austin/San Antonio radar (KEWX), 114 km from the middle of the area, began a volume at 23:37 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 12:00Z, 11.6 hours before the alert went out and 148 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: 749 J/kg
Mixed-layer CIN: -292 J/kg
Mixed-layer LCL: 743 m above ground
0-6 km bulk shear: 55 kt
0-1 km storm-relative helicity: 67 m²/s²
0-3 km storm-relative helicity: 116 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.7

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 23, 6:34 PM CDT, 1 minute earlier.

Area forecast discussion, May 23, 6:34 PM CDT, 1 minute before

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Hazardous weather outlook, May 23, 5:25 AM CDT, 13 hours 10 minutes before

Hazardous Weather Outlook
National Weather Service Austin/San Antonio TX
525 AM CDT Tue May 23 2017

TXZ171>173-183>194-202>209-217>225-228-241030-
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-
525 AM CDT Tue May 23 2017

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

.DAY ONE...Today And Tonight.

A final round of scattered showers and thunderstorms is expected
mainly this afternoon across most of South Central Texas except
for the Edwards Plateau. A few of these storms could be strong to
severe, with large hail and damaging straight-line winds the main
threats.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotters are encouraged to relay severe weather reports to the
National Weather Service.

In the hours before

Local storm report, May 23, 6:02 PM CDT, 33 minutes before

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Local storm report, May 23, 6:07 PM CDT, 28 minutes before

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Local storm report, May 23, 6:14 PM CDT, 21 minutes before

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Local storm report, May 23, 6:15 PM CDT, 20 minutes before

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Local storm report, May 23, 6:27 PM CDT, 8 minutes before

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Special weather statement, May 23, 6:35 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
May 23, 4:12 PM CDT	Special Weather Statement	EWX	Burnet	33 min
May 23, 4:16 PM CDT	Special Weather Statement	EWX	Uvalde	29 min
May 23, 4:28 PM CDT	Special Weather Statement	EWX	Bexar	32 min
May 23, 4:31 PM CDT	Severe Thunderstorm Warning	EWX	Uvalde, Zavala	44 min
May 23, 4:46 PM CDT	Severe Thunderstorm Warning	EWX	Bexar, Wilson	44 min
May 23, 5:03 PM CDT	Special Weather Statement	EWX	Travis	42 min
May 23, 5:13 PM CDT	Severe Thunderstorm Warning	EWX	Frio, Zavala	47 min
May 23, 5:19 PM CDT	Severe Thunderstorm Warning	EWX	Bastrop, Lee, Travis, Williamson	41 min
May 23, 5:23 PM CDT	Special Weather Statement	EWX	Medina	52 min
May 23, 5:25 PM CDT	Special Weather Statement	EWX	Travis	50 min
May 23, 5:27 PM CDT	Severe Thunderstorm Warning	EWX	Atascosa, Bexar	33 min
May 23, 5:32 PM CDT	Special Weather Statement	EWX	Wilson	28 min
May 23, 5:52 PM CDT	Severe Thunderstorm Warning	EWX	Bastrop, Fayette, Lee	53 min
May 23, 5:54 PM CDT	Severe Thunderstorm Warning	EWX	Frio	36 min
May 23, 5:56 PM CDT	Special Weather Statement	EWX	Bastrop, Fayette, Travis	49 min
May 23, 5:57 PM CDT	Special Weather Statement	EWX	Hays	48 min
May 23, 5:58 PM CDT	Severe Thunderstorm Warning	EWX	Atascosa, Bexar, Wilson	35 min
May 23, 6:11 PM CDT	Severe Thunderstorm Warning	EWX	Bastrop, Caldwell, Hays, Travis	49 min
May 23, 6:42 PM CDT	Severe Thunderstorm Warning	EWX	Atascosa	17 min
May 23, 6:56 PM CDT	Special Weather Statement	EWX	Fayette	49 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.