Alert archive / Texas / Special Weather Statements in 2016

Special Weather Statement, NWS Austin/San Antonio, TX

June 28, 2016Williamson County, Texas

NWS Austin/San Antonio, TX issued this special weather statement at Jun 28, 2016, 4:21 PM CDT for Williamson County, Texas. It was in force for 39 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 28, 2016, 4:21 PM CDT (21:21 UTC)
Expired: Jun 28, 2016, 5:00 PM CDT
In force: 39 min
Issued by: NWS Austin/San Antonio, TX

County Williamson County, TX

The radar

The Ft Hood radar (KGRK), 22 km from the middle of the area, began a volume at 21:22 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

Fort Worth, TX (KFWD), launched 12:00Z, 9.4 hours before the alert went out and 248 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: 896 J/kg
Mixed-layer CIN: -103 J/kg
Mixed-layer LCL: 1386 m above ground
0-6 km bulk shear: 7 kt
0-1 km storm-relative helicity: 15 m²/s²
0-3 km storm-relative helicity: 37 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 28, 3:29 PM CDT	Special Weather Statement	EWX	Lee	46 min
Jun 28, 3:30 PM CDT	Special Weather Statement	EWX	Travis	45 min
Jun 28, 4:30 PM CDT	Areal Flood Advisory	EWX	Travis, Williamson	3 hr
Jun 28, 4:45 PM CDT	Special Weather Statement	EWX	Travis	45 min
Jun 28, 4:47 PM CDT	Special Weather Statement	EWX	Comal	43 min
Jun 28, 5:26 PM CDT	Special Weather Statement	EWX	Comal	49 min
Jun 28, 5:54 PM CDT	Areal Flood Advisory	EWX	Blanco, Comal, Hays, Kendall	3 hr

Nearby

Special Weather Statements in Texas, 2016 Every special weather statement in 2016

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.