Alert archive / Texas / Special Weather Statements in 2017

Special Weather Statement, NWS Austin/San Antonio, TX

June 26, 2017Williamson County, Texas

NWS Austin/San Antonio, TX issued this special weather statement at Jun 26, 2017, 9:14 PM CDT for Williamson County, Texas. It was in force for 46 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 26, 2017, 9:14 PM CDT (02:14 UTC)
Expired: Jun 26, 2017, 10:00 PM CDT
In force: 46 min
Issued by: NWS Austin/San Antonio, TX

County Williamson County, TX

The radar

The Ft Hood radar (KGRK), 30 km from the middle of the area, began a volume at 02:16 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 335 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: 866 J/kg
Mixed-layer CIN: -5 J/kg
Mixed-layer LCL: 1981 m above ground
0-6 km bulk shear: 21 kt
0-1 km storm-relative helicity: -5 m²/s²
0-3 km storm-relative helicity: 13 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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The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 26, 7:40 PM CDT	Areal Flood Advisory	EWX	Comal, Hays	65 min
Jun 26, 8:01 PM CDT	Areal Flood Advisory	EWX	Hays, Travis	59 min
Jun 26, 8:09 PM CDT	Areal Flood Advisory	EWX	Bandera, Medina, Uvalde	66 min
Jun 26, 8:22 PM CDT	Special Weather Statement	EWX	Travis	38 min
Jun 26, 9:16 PM CDT	Areal Flood Advisory	EWX	Gillespie	59 min
Jun 26, 9:19 PM CDT	Areal Flood Advisory	EWX	Bandera, Kerr, Real	56 min
Jun 26, 10:26 PM CDT	Special Weather Statement	EWX	Zavala	49 min
Jun 26, 10:30 PM CDT	Areal Flood Advisory	EWX	Bandera, Gillespie, Kendall, Kerr	60 min
Jun 26, 11:28 PM CDT	Areal Flood Advisory	EWX	Bandera, Gillespie, Kendall, Kerr	2 hr
Jun 27, 4:56 PM CDT	Special Weather Statement	EWX	Caldwell	34 min
Jun 27, 5:13 PM CDT	Special Weather Statement	EWX	Guadalupe	32 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.